Wed, 11 Mar 2009 14:16:13 -0700
6812587: Use auxv to determine SPARC hardware features on Solaris
Summary: A similar function to getisax(2) should be used to determine all possible instruction set extensions.
Reviewed-by: never, kvn
duke@435 | 1 | /* |
twisti@1076 | 2 | * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // do not include precompiled header file |
duke@435 | 26 | # include "incls/_os_solaris.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | // put OS-includes here |
duke@435 | 29 | # include <dlfcn.h> |
duke@435 | 30 | # include <errno.h> |
duke@435 | 31 | # include <link.h> |
duke@435 | 32 | # include <poll.h> |
duke@435 | 33 | # include <pthread.h> |
duke@435 | 34 | # include <pwd.h> |
duke@435 | 35 | # include <schedctl.h> |
duke@435 | 36 | # include <setjmp.h> |
duke@435 | 37 | # include <signal.h> |
duke@435 | 38 | # include <stdio.h> |
duke@435 | 39 | # include <alloca.h> |
duke@435 | 40 | # include <sys/filio.h> |
duke@435 | 41 | # include <sys/ipc.h> |
duke@435 | 42 | # include <sys/lwp.h> |
duke@435 | 43 | # include <sys/machelf.h> // for elf Sym structure used by dladdr1 |
duke@435 | 44 | # include <sys/mman.h> |
duke@435 | 45 | # include <sys/processor.h> |
duke@435 | 46 | # include <sys/procset.h> |
duke@435 | 47 | # include <sys/pset.h> |
duke@435 | 48 | # include <sys/resource.h> |
duke@435 | 49 | # include <sys/shm.h> |
duke@435 | 50 | # include <sys/socket.h> |
duke@435 | 51 | # include <sys/stat.h> |
duke@435 | 52 | # include <sys/systeminfo.h> |
duke@435 | 53 | # include <sys/time.h> |
duke@435 | 54 | # include <sys/times.h> |
duke@435 | 55 | # include <sys/types.h> |
duke@435 | 56 | # include <sys/wait.h> |
duke@435 | 57 | # include <sys/utsname.h> |
duke@435 | 58 | # include <thread.h> |
duke@435 | 59 | # include <unistd.h> |
duke@435 | 60 | # include <sys/priocntl.h> |
duke@435 | 61 | # include <sys/rtpriocntl.h> |
duke@435 | 62 | # include <sys/tspriocntl.h> |
duke@435 | 63 | # include <sys/iapriocntl.h> |
duke@435 | 64 | # include <sys/loadavg.h> |
duke@435 | 65 | # include <string.h> |
duke@435 | 66 | |
duke@435 | 67 | # define _STRUCTURED_PROC 1 // this gets us the new structured proc interfaces of 5.6 & later |
duke@435 | 68 | # include <sys/procfs.h> // see comment in <sys/procfs.h> |
duke@435 | 69 | |
duke@435 | 70 | #define MAX_PATH (2 * K) |
duke@435 | 71 | |
duke@435 | 72 | // for timer info max values which include all bits |
duke@435 | 73 | #define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF) |
duke@435 | 74 | |
duke@435 | 75 | #ifdef _GNU_SOURCE |
duke@435 | 76 | // See bug #6514594 |
duke@435 | 77 | extern "C" int madvise(caddr_t, size_t, int); |
duke@435 | 78 | extern "C" int memcntl(caddr_t addr, size_t len, int cmd, caddr_t arg, |
duke@435 | 79 | int attr, int mask); |
duke@435 | 80 | #endif //_GNU_SOURCE |
duke@435 | 81 | |
duke@435 | 82 | /* |
duke@435 | 83 | MPSS Changes Start. |
duke@435 | 84 | The JVM binary needs to be built and run on pre-Solaris 9 |
duke@435 | 85 | systems, but the constants needed by MPSS are only in Solaris 9 |
duke@435 | 86 | header files. They are textually replicated here to allow |
duke@435 | 87 | building on earlier systems. Once building on Solaris 8 is |
duke@435 | 88 | no longer a requirement, these #defines can be replaced by ordinary |
duke@435 | 89 | system .h inclusion. |
duke@435 | 90 | |
duke@435 | 91 | In earlier versions of the JDK and Solaris, we used ISM for large pages. |
duke@435 | 92 | But ISM requires shared memory to achieve this and thus has many caveats. |
duke@435 | 93 | MPSS is a fully transparent and is a cleaner way to get large pages. |
duke@435 | 94 | Although we still require keeping ISM for backward compatiblitiy as well as |
duke@435 | 95 | giving the opportunity to use large pages on older systems it is |
duke@435 | 96 | recommended that MPSS be used for Solaris 9 and above. |
duke@435 | 97 | |
duke@435 | 98 | */ |
duke@435 | 99 | |
duke@435 | 100 | #ifndef MC_HAT_ADVISE |
duke@435 | 101 | |
duke@435 | 102 | struct memcntl_mha { |
duke@435 | 103 | uint_t mha_cmd; /* command(s) */ |
duke@435 | 104 | uint_t mha_flags; |
duke@435 | 105 | size_t mha_pagesize; |
duke@435 | 106 | }; |
duke@435 | 107 | #define MC_HAT_ADVISE 7 /* advise hat map size */ |
duke@435 | 108 | #define MHA_MAPSIZE_VA 0x1 /* set preferred page size */ |
duke@435 | 109 | #define MAP_ALIGN 0x200 /* addr specifies alignment */ |
duke@435 | 110 | |
duke@435 | 111 | #endif |
duke@435 | 112 | // MPSS Changes End. |
duke@435 | 113 | |
duke@435 | 114 | |
duke@435 | 115 | // Here are some liblgrp types from sys/lgrp_user.h to be able to |
duke@435 | 116 | // compile on older systems without this header file. |
duke@435 | 117 | |
duke@435 | 118 | #ifndef MADV_ACCESS_LWP |
duke@435 | 119 | # define MADV_ACCESS_LWP 7 /* next LWP to access heavily */ |
duke@435 | 120 | #endif |
duke@435 | 121 | #ifndef MADV_ACCESS_MANY |
duke@435 | 122 | # define MADV_ACCESS_MANY 8 /* many processes to access heavily */ |
duke@435 | 123 | #endif |
duke@435 | 124 | |
iveresov@579 | 125 | #ifndef LGRP_RSRC_CPU |
iveresov@579 | 126 | # define LGRP_RSRC_CPU 0 /* CPU resources */ |
iveresov@579 | 127 | #endif |
iveresov@579 | 128 | #ifndef LGRP_RSRC_MEM |
iveresov@579 | 129 | # define LGRP_RSRC_MEM 1 /* memory resources */ |
iveresov@579 | 130 | #endif |
iveresov@579 | 131 | |
duke@435 | 132 | // Some more macros from sys/mman.h that are not present in Solaris 8. |
duke@435 | 133 | |
duke@435 | 134 | #ifndef MAX_MEMINFO_CNT |
duke@435 | 135 | /* |
duke@435 | 136 | * info_req request type definitions for meminfo |
duke@435 | 137 | * request types starting with MEMINFO_V are used for Virtual addresses |
duke@435 | 138 | * and should not be mixed with MEMINFO_PLGRP which is targeted for Physical |
duke@435 | 139 | * addresses |
duke@435 | 140 | */ |
duke@435 | 141 | # define MEMINFO_SHIFT 16 |
duke@435 | 142 | # define MEMINFO_MASK (0xFF << MEMINFO_SHIFT) |
duke@435 | 143 | # define MEMINFO_VPHYSICAL (0x01 << MEMINFO_SHIFT) /* get physical addr */ |
duke@435 | 144 | # define MEMINFO_VLGRP (0x02 << MEMINFO_SHIFT) /* get lgroup */ |
duke@435 | 145 | # define MEMINFO_VPAGESIZE (0x03 << MEMINFO_SHIFT) /* size of phys page */ |
duke@435 | 146 | # define MEMINFO_VREPLCNT (0x04 << MEMINFO_SHIFT) /* no. of replica */ |
duke@435 | 147 | # define MEMINFO_VREPL (0x05 << MEMINFO_SHIFT) /* physical replica */ |
duke@435 | 148 | # define MEMINFO_VREPL_LGRP (0x06 << MEMINFO_SHIFT) /* lgrp of replica */ |
duke@435 | 149 | # define MEMINFO_PLGRP (0x07 << MEMINFO_SHIFT) /* lgroup for paddr */ |
duke@435 | 150 | |
duke@435 | 151 | /* maximum number of addresses meminfo() can process at a time */ |
duke@435 | 152 | # define MAX_MEMINFO_CNT 256 |
duke@435 | 153 | |
duke@435 | 154 | /* maximum number of request types */ |
duke@435 | 155 | # define MAX_MEMINFO_REQ 31 |
duke@435 | 156 | #endif |
duke@435 | 157 | |
duke@435 | 158 | // see thr_setprio(3T) for the basis of these numbers |
duke@435 | 159 | #define MinimumPriority 0 |
duke@435 | 160 | #define NormalPriority 64 |
duke@435 | 161 | #define MaximumPriority 127 |
duke@435 | 162 | |
duke@435 | 163 | // Values for ThreadPriorityPolicy == 1 |
duke@435 | 164 | int prio_policy1[MaxPriority+1] = { -99999, 0, 16, 32, 48, 64, |
duke@435 | 165 | 80, 96, 112, 124, 127 }; |
duke@435 | 166 | |
duke@435 | 167 | // System parameters used internally |
duke@435 | 168 | static clock_t clock_tics_per_sec = 100; |
duke@435 | 169 | |
duke@435 | 170 | // For diagnostics to print a message once. see run_periodic_checks |
duke@435 | 171 | static bool check_addr0_done = false; |
duke@435 | 172 | static sigset_t check_signal_done; |
duke@435 | 173 | static bool check_signals = true; |
duke@435 | 174 | |
duke@435 | 175 | address os::Solaris::handler_start; // start pc of thr_sighndlrinfo |
duke@435 | 176 | address os::Solaris::handler_end; // end pc of thr_sighndlrinfo |
duke@435 | 177 | |
duke@435 | 178 | address os::Solaris::_main_stack_base = NULL; // 4352906 workaround |
duke@435 | 179 | |
duke@435 | 180 | |
duke@435 | 181 | // "default" initializers for missing libc APIs |
duke@435 | 182 | extern "C" { |
duke@435 | 183 | static int lwp_mutex_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } |
duke@435 | 184 | static int lwp_mutex_destroy(mutex_t *mx) { return 0; } |
duke@435 | 185 | |
duke@435 | 186 | static int lwp_cond_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } |
duke@435 | 187 | static int lwp_cond_destroy(cond_t *cv) { return 0; } |
duke@435 | 188 | } |
duke@435 | 189 | |
duke@435 | 190 | // "default" initializers for pthread-based synchronization |
duke@435 | 191 | extern "C" { |
duke@435 | 192 | static int pthread_mutex_default_init(mutex_t *mx, int scope, void *arg) { memset(mx, 0, sizeof(mutex_t)); return 0; } |
duke@435 | 193 | static int pthread_cond_default_init(cond_t *cv, int scope, void *arg){ memset(cv, 0, sizeof(cond_t)); return 0; } |
duke@435 | 194 | } |
duke@435 | 195 | |
duke@435 | 196 | // Thread Local Storage |
duke@435 | 197 | // This is common to all Solaris platforms so it is defined here, |
duke@435 | 198 | // in this common file. |
duke@435 | 199 | // The declarations are in the os_cpu threadLS*.hpp files. |
duke@435 | 200 | // |
duke@435 | 201 | // Static member initialization for TLS |
duke@435 | 202 | Thread* ThreadLocalStorage::_get_thread_cache[ThreadLocalStorage::_pd_cache_size] = {NULL}; |
duke@435 | 203 | |
duke@435 | 204 | #ifndef PRODUCT |
duke@435 | 205 | #define _PCT(n,d) ((100.0*(double)(n))/(double)(d)) |
duke@435 | 206 | |
duke@435 | 207 | int ThreadLocalStorage::_tcacheHit = 0; |
duke@435 | 208 | int ThreadLocalStorage::_tcacheMiss = 0; |
duke@435 | 209 | |
duke@435 | 210 | void ThreadLocalStorage::print_statistics() { |
duke@435 | 211 | int total = _tcacheMiss+_tcacheHit; |
duke@435 | 212 | tty->print_cr("Thread cache hits %d misses %d total %d percent %f\n", |
duke@435 | 213 | _tcacheHit, _tcacheMiss, total, _PCT(_tcacheHit, total)); |
duke@435 | 214 | } |
duke@435 | 215 | #undef _PCT |
duke@435 | 216 | #endif // PRODUCT |
duke@435 | 217 | |
duke@435 | 218 | Thread* ThreadLocalStorage::get_thread_via_cache_slowly(uintptr_t raw_id, |
duke@435 | 219 | int index) { |
duke@435 | 220 | Thread *thread = get_thread_slow(); |
duke@435 | 221 | if (thread != NULL) { |
duke@435 | 222 | address sp = os::current_stack_pointer(); |
duke@435 | 223 | guarantee(thread->_stack_base == NULL || |
duke@435 | 224 | (sp <= thread->_stack_base && |
duke@435 | 225 | sp >= thread->_stack_base - thread->_stack_size) || |
duke@435 | 226 | is_error_reported(), |
duke@435 | 227 | "sp must be inside of selected thread stack"); |
duke@435 | 228 | |
duke@435 | 229 | thread->_self_raw_id = raw_id; // mark for quick retrieval |
duke@435 | 230 | _get_thread_cache[ index ] = thread; |
duke@435 | 231 | } |
duke@435 | 232 | return thread; |
duke@435 | 233 | } |
duke@435 | 234 | |
duke@435 | 235 | |
duke@435 | 236 | static const double all_zero[ sizeof(Thread) / sizeof(double) + 1 ] = {0}; |
duke@435 | 237 | #define NO_CACHED_THREAD ((Thread*)all_zero) |
duke@435 | 238 | |
duke@435 | 239 | void ThreadLocalStorage::pd_set_thread(Thread* thread) { |
duke@435 | 240 | |
duke@435 | 241 | // Store the new value before updating the cache to prevent a race |
duke@435 | 242 | // between get_thread_via_cache_slowly() and this store operation. |
duke@435 | 243 | os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread); |
duke@435 | 244 | |
duke@435 | 245 | // Update thread cache with new thread if setting on thread create, |
duke@435 | 246 | // or NO_CACHED_THREAD (zeroed) thread if resetting thread on exit. |
duke@435 | 247 | uintptr_t raw = pd_raw_thread_id(); |
duke@435 | 248 | int ix = pd_cache_index(raw); |
duke@435 | 249 | _get_thread_cache[ix] = thread == NULL ? NO_CACHED_THREAD : thread; |
duke@435 | 250 | } |
duke@435 | 251 | |
duke@435 | 252 | void ThreadLocalStorage::pd_init() { |
duke@435 | 253 | for (int i = 0; i < _pd_cache_size; i++) { |
duke@435 | 254 | _get_thread_cache[i] = NO_CACHED_THREAD; |
duke@435 | 255 | } |
duke@435 | 256 | } |
duke@435 | 257 | |
duke@435 | 258 | // Invalidate all the caches (happens to be the same as pd_init). |
duke@435 | 259 | void ThreadLocalStorage::pd_invalidate_all() { pd_init(); } |
duke@435 | 260 | |
duke@435 | 261 | #undef NO_CACHED_THREAD |
duke@435 | 262 | |
duke@435 | 263 | // END Thread Local Storage |
duke@435 | 264 | |
duke@435 | 265 | static inline size_t adjust_stack_size(address base, size_t size) { |
duke@435 | 266 | if ((ssize_t)size < 0) { |
duke@435 | 267 | // 4759953: Compensate for ridiculous stack size. |
duke@435 | 268 | size = max_intx; |
duke@435 | 269 | } |
duke@435 | 270 | if (size > (size_t)base) { |
duke@435 | 271 | // 4812466: Make sure size doesn't allow the stack to wrap the address space. |
duke@435 | 272 | size = (size_t)base; |
duke@435 | 273 | } |
duke@435 | 274 | return size; |
duke@435 | 275 | } |
duke@435 | 276 | |
duke@435 | 277 | static inline stack_t get_stack_info() { |
duke@435 | 278 | stack_t st; |
duke@435 | 279 | int retval = thr_stksegment(&st); |
duke@435 | 280 | st.ss_size = adjust_stack_size((address)st.ss_sp, st.ss_size); |
duke@435 | 281 | assert(retval == 0, "incorrect return value from thr_stksegment"); |
duke@435 | 282 | assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); |
duke@435 | 283 | assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); |
duke@435 | 284 | return st; |
duke@435 | 285 | } |
duke@435 | 286 | |
duke@435 | 287 | address os::current_stack_base() { |
duke@435 | 288 | int r = thr_main() ; |
duke@435 | 289 | guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; |
duke@435 | 290 | bool is_primordial_thread = r; |
duke@435 | 291 | |
duke@435 | 292 | // Workaround 4352906, avoid calls to thr_stksegment by |
duke@435 | 293 | // thr_main after the first one (it looks like we trash |
duke@435 | 294 | // some data, causing the value for ss_sp to be incorrect). |
duke@435 | 295 | if (!is_primordial_thread || os::Solaris::_main_stack_base == NULL) { |
duke@435 | 296 | stack_t st = get_stack_info(); |
duke@435 | 297 | if (is_primordial_thread) { |
duke@435 | 298 | // cache initial value of stack base |
duke@435 | 299 | os::Solaris::_main_stack_base = (address)st.ss_sp; |
duke@435 | 300 | } |
duke@435 | 301 | return (address)st.ss_sp; |
duke@435 | 302 | } else { |
duke@435 | 303 | guarantee(os::Solaris::_main_stack_base != NULL, "Attempt to use null cached stack base"); |
duke@435 | 304 | return os::Solaris::_main_stack_base; |
duke@435 | 305 | } |
duke@435 | 306 | } |
duke@435 | 307 | |
duke@435 | 308 | size_t os::current_stack_size() { |
duke@435 | 309 | size_t size; |
duke@435 | 310 | |
duke@435 | 311 | int r = thr_main() ; |
duke@435 | 312 | guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; |
duke@435 | 313 | if(!r) { |
duke@435 | 314 | size = get_stack_info().ss_size; |
duke@435 | 315 | } else { |
duke@435 | 316 | struct rlimit limits; |
duke@435 | 317 | getrlimit(RLIMIT_STACK, &limits); |
duke@435 | 318 | size = adjust_stack_size(os::Solaris::_main_stack_base, (size_t)limits.rlim_cur); |
duke@435 | 319 | } |
duke@435 | 320 | // base may not be page aligned |
duke@435 | 321 | address base = current_stack_base(); |
duke@435 | 322 | address bottom = (address)align_size_up((intptr_t)(base - size), os::vm_page_size());; |
duke@435 | 323 | return (size_t)(base - bottom); |
duke@435 | 324 | } |
duke@435 | 325 | |
ysr@983 | 326 | struct tm* os::localtime_pd(const time_t* clock, struct tm* res) { |
ysr@983 | 327 | return localtime_r(clock, res); |
ysr@983 | 328 | } |
ysr@983 | 329 | |
duke@435 | 330 | // interruptible infrastructure |
duke@435 | 331 | |
duke@435 | 332 | // setup_interruptible saves the thread state before going into an |
duke@435 | 333 | // interruptible system call. |
duke@435 | 334 | // The saved state is used to restore the thread to |
duke@435 | 335 | // its former state whether or not an interrupt is received. |
duke@435 | 336 | // Used by classloader os::read |
duke@435 | 337 | // hpi calls skip this layer and stay in _thread_in_native |
duke@435 | 338 | |
duke@435 | 339 | void os::Solaris::setup_interruptible(JavaThread* thread) { |
duke@435 | 340 | |
duke@435 | 341 | JavaThreadState thread_state = thread->thread_state(); |
duke@435 | 342 | |
duke@435 | 343 | assert(thread_state != _thread_blocked, "Coming from the wrong thread"); |
duke@435 | 344 | assert(thread_state != _thread_in_native, "Native threads skip setup_interruptible"); |
duke@435 | 345 | OSThread* osthread = thread->osthread(); |
duke@435 | 346 | osthread->set_saved_interrupt_thread_state(thread_state); |
duke@435 | 347 | thread->frame_anchor()->make_walkable(thread); |
duke@435 | 348 | ThreadStateTransition::transition(thread, thread_state, _thread_blocked); |
duke@435 | 349 | } |
duke@435 | 350 | |
duke@435 | 351 | // Version of setup_interruptible() for threads that are already in |
duke@435 | 352 | // _thread_blocked. Used by os_sleep(). |
duke@435 | 353 | void os::Solaris::setup_interruptible_already_blocked(JavaThread* thread) { |
duke@435 | 354 | thread->frame_anchor()->make_walkable(thread); |
duke@435 | 355 | } |
duke@435 | 356 | |
duke@435 | 357 | JavaThread* os::Solaris::setup_interruptible() { |
duke@435 | 358 | JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); |
duke@435 | 359 | setup_interruptible(thread); |
duke@435 | 360 | return thread; |
duke@435 | 361 | } |
duke@435 | 362 | |
duke@435 | 363 | void os::Solaris::try_enable_extended_io() { |
duke@435 | 364 | typedef int (*enable_extended_FILE_stdio_t)(int, int); |
duke@435 | 365 | |
duke@435 | 366 | if (!UseExtendedFileIO) { |
duke@435 | 367 | return; |
duke@435 | 368 | } |
duke@435 | 369 | |
duke@435 | 370 | enable_extended_FILE_stdio_t enabler = |
duke@435 | 371 | (enable_extended_FILE_stdio_t) dlsym(RTLD_DEFAULT, |
duke@435 | 372 | "enable_extended_FILE_stdio"); |
duke@435 | 373 | if (enabler) { |
duke@435 | 374 | enabler(-1, -1); |
duke@435 | 375 | } |
duke@435 | 376 | } |
duke@435 | 377 | |
duke@435 | 378 | |
duke@435 | 379 | #ifdef ASSERT |
duke@435 | 380 | |
duke@435 | 381 | JavaThread* os::Solaris::setup_interruptible_native() { |
duke@435 | 382 | JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); |
duke@435 | 383 | JavaThreadState thread_state = thread->thread_state(); |
duke@435 | 384 | assert(thread_state == _thread_in_native, "Assumed thread_in_native"); |
duke@435 | 385 | return thread; |
duke@435 | 386 | } |
duke@435 | 387 | |
duke@435 | 388 | void os::Solaris::cleanup_interruptible_native(JavaThread* thread) { |
duke@435 | 389 | JavaThreadState thread_state = thread->thread_state(); |
duke@435 | 390 | assert(thread_state == _thread_in_native, "Assumed thread_in_native"); |
duke@435 | 391 | } |
duke@435 | 392 | #endif |
duke@435 | 393 | |
duke@435 | 394 | // cleanup_interruptible reverses the effects of setup_interruptible |
duke@435 | 395 | // setup_interruptible_already_blocked() does not need any cleanup. |
duke@435 | 396 | |
duke@435 | 397 | void os::Solaris::cleanup_interruptible(JavaThread* thread) { |
duke@435 | 398 | OSThread* osthread = thread->osthread(); |
duke@435 | 399 | |
duke@435 | 400 | ThreadStateTransition::transition(thread, _thread_blocked, osthread->saved_interrupt_thread_state()); |
duke@435 | 401 | } |
duke@435 | 402 | |
duke@435 | 403 | // I/O interruption related counters called in _INTERRUPTIBLE |
duke@435 | 404 | |
duke@435 | 405 | void os::Solaris::bump_interrupted_before_count() { |
duke@435 | 406 | RuntimeService::record_interrupted_before_count(); |
duke@435 | 407 | } |
duke@435 | 408 | |
duke@435 | 409 | void os::Solaris::bump_interrupted_during_count() { |
duke@435 | 410 | RuntimeService::record_interrupted_during_count(); |
duke@435 | 411 | } |
duke@435 | 412 | |
duke@435 | 413 | static int _processors_online = 0; |
duke@435 | 414 | |
duke@435 | 415 | jint os::Solaris::_os_thread_limit = 0; |
duke@435 | 416 | volatile jint os::Solaris::_os_thread_count = 0; |
duke@435 | 417 | |
duke@435 | 418 | julong os::available_memory() { |
duke@435 | 419 | return Solaris::available_memory(); |
duke@435 | 420 | } |
duke@435 | 421 | |
duke@435 | 422 | julong os::Solaris::available_memory() { |
duke@435 | 423 | return (julong)sysconf(_SC_AVPHYS_PAGES) * os::vm_page_size(); |
duke@435 | 424 | } |
duke@435 | 425 | |
duke@435 | 426 | julong os::Solaris::_physical_memory = 0; |
duke@435 | 427 | |
duke@435 | 428 | julong os::physical_memory() { |
duke@435 | 429 | return Solaris::physical_memory(); |
duke@435 | 430 | } |
duke@435 | 431 | |
duke@435 | 432 | julong os::allocatable_physical_memory(julong size) { |
duke@435 | 433 | #ifdef _LP64 |
duke@435 | 434 | return size; |
duke@435 | 435 | #else |
duke@435 | 436 | julong result = MIN2(size, (julong)3835*M); |
duke@435 | 437 | if (!is_allocatable(result)) { |
duke@435 | 438 | // Memory allocations will be aligned but the alignment |
duke@435 | 439 | // is not known at this point. Alignments will |
duke@435 | 440 | // be at most to LargePageSizeInBytes. Protect |
duke@435 | 441 | // allocations from alignments up to illegal |
duke@435 | 442 | // values. If at this point 2G is illegal. |
duke@435 | 443 | julong reasonable_size = (julong)2*G - 2 * LargePageSizeInBytes; |
duke@435 | 444 | result = MIN2(size, reasonable_size); |
duke@435 | 445 | } |
duke@435 | 446 | return result; |
duke@435 | 447 | #endif |
duke@435 | 448 | } |
duke@435 | 449 | |
duke@435 | 450 | static hrtime_t first_hrtime = 0; |
duke@435 | 451 | static const hrtime_t hrtime_hz = 1000*1000*1000; |
duke@435 | 452 | const int LOCK_BUSY = 1; |
duke@435 | 453 | const int LOCK_FREE = 0; |
duke@435 | 454 | const int LOCK_INVALID = -1; |
duke@435 | 455 | static volatile hrtime_t max_hrtime = 0; |
duke@435 | 456 | static volatile int max_hrtime_lock = LOCK_FREE; // Update counter with LSB as lock-in-progress |
duke@435 | 457 | |
duke@435 | 458 | |
duke@435 | 459 | void os::Solaris::initialize_system_info() { |
duke@435 | 460 | _processor_count = sysconf(_SC_NPROCESSORS_CONF); |
duke@435 | 461 | _processors_online = sysconf (_SC_NPROCESSORS_ONLN); |
duke@435 | 462 | _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE); |
duke@435 | 463 | } |
duke@435 | 464 | |
duke@435 | 465 | int os::active_processor_count() { |
duke@435 | 466 | int online_cpus = sysconf(_SC_NPROCESSORS_ONLN); |
duke@435 | 467 | pid_t pid = getpid(); |
duke@435 | 468 | psetid_t pset = PS_NONE; |
xlu@822 | 469 | // Are we running in a processor set or is there any processor set around? |
duke@435 | 470 | if (pset_bind(PS_QUERY, P_PID, pid, &pset) == 0) { |
xlu@822 | 471 | uint_t pset_cpus; |
xlu@822 | 472 | // Query the number of cpus available to us. |
xlu@822 | 473 | if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) { |
xlu@822 | 474 | assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check"); |
xlu@822 | 475 | _processors_online = pset_cpus; |
xlu@822 | 476 | return pset_cpus; |
duke@435 | 477 | } |
duke@435 | 478 | } |
duke@435 | 479 | // Otherwise return number of online cpus |
duke@435 | 480 | return online_cpus; |
duke@435 | 481 | } |
duke@435 | 482 | |
duke@435 | 483 | static bool find_processors_in_pset(psetid_t pset, |
duke@435 | 484 | processorid_t** id_array, |
duke@435 | 485 | uint_t* id_length) { |
duke@435 | 486 | bool result = false; |
duke@435 | 487 | // Find the number of processors in the processor set. |
duke@435 | 488 | if (pset_info(pset, NULL, id_length, NULL) == 0) { |
duke@435 | 489 | // Make up an array to hold their ids. |
duke@435 | 490 | *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length); |
duke@435 | 491 | // Fill in the array with their processor ids. |
duke@435 | 492 | if (pset_info(pset, NULL, id_length, *id_array) == 0) { |
duke@435 | 493 | result = true; |
duke@435 | 494 | } |
duke@435 | 495 | } |
duke@435 | 496 | return result; |
duke@435 | 497 | } |
duke@435 | 498 | |
duke@435 | 499 | // Callers of find_processors_online() must tolerate imprecise results -- |
duke@435 | 500 | // the system configuration can change asynchronously because of DR |
duke@435 | 501 | // or explicit psradm operations. |
duke@435 | 502 | // |
duke@435 | 503 | // We also need to take care that the loop (below) terminates as the |
duke@435 | 504 | // number of processors online can change between the _SC_NPROCESSORS_ONLN |
duke@435 | 505 | // request and the loop that builds the list of processor ids. Unfortunately |
duke@435 | 506 | // there's no reliable way to determine the maximum valid processor id, |
duke@435 | 507 | // so we use a manifest constant, MAX_PROCESSOR_ID, instead. See p_online |
duke@435 | 508 | // man pages, which claim the processor id set is "sparse, but |
duke@435 | 509 | // not too sparse". MAX_PROCESSOR_ID is used to ensure that we eventually |
duke@435 | 510 | // exit the loop. |
duke@435 | 511 | // |
duke@435 | 512 | // In the future we'll be able to use sysconf(_SC_CPUID_MAX), but that's |
duke@435 | 513 | // not available on S8.0. |
duke@435 | 514 | |
duke@435 | 515 | static bool find_processors_online(processorid_t** id_array, |
duke@435 | 516 | uint* id_length) { |
duke@435 | 517 | const processorid_t MAX_PROCESSOR_ID = 100000 ; |
duke@435 | 518 | // Find the number of processors online. |
duke@435 | 519 | *id_length = sysconf(_SC_NPROCESSORS_ONLN); |
duke@435 | 520 | // Make up an array to hold their ids. |
duke@435 | 521 | *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length); |
duke@435 | 522 | // Processors need not be numbered consecutively. |
duke@435 | 523 | long found = 0; |
duke@435 | 524 | processorid_t next = 0; |
duke@435 | 525 | while (found < *id_length && next < MAX_PROCESSOR_ID) { |
duke@435 | 526 | processor_info_t info; |
duke@435 | 527 | if (processor_info(next, &info) == 0) { |
duke@435 | 528 | // NB, PI_NOINTR processors are effectively online ... |
duke@435 | 529 | if (info.pi_state == P_ONLINE || info.pi_state == P_NOINTR) { |
duke@435 | 530 | (*id_array)[found] = next; |
duke@435 | 531 | found += 1; |
duke@435 | 532 | } |
duke@435 | 533 | } |
duke@435 | 534 | next += 1; |
duke@435 | 535 | } |
duke@435 | 536 | if (found < *id_length) { |
duke@435 | 537 | // The loop above didn't identify the expected number of processors. |
duke@435 | 538 | // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN) |
duke@435 | 539 | // and re-running the loop, above, but there's no guarantee of progress |
duke@435 | 540 | // if the system configuration is in flux. Instead, we just return what |
duke@435 | 541 | // we've got. Note that in the worst case find_processors_online() could |
duke@435 | 542 | // return an empty set. (As a fall-back in the case of the empty set we |
duke@435 | 543 | // could just return the ID of the current processor). |
duke@435 | 544 | *id_length = found ; |
duke@435 | 545 | } |
duke@435 | 546 | |
duke@435 | 547 | return true; |
duke@435 | 548 | } |
duke@435 | 549 | |
duke@435 | 550 | static bool assign_distribution(processorid_t* id_array, |
duke@435 | 551 | uint id_length, |
duke@435 | 552 | uint* distribution, |
duke@435 | 553 | uint distribution_length) { |
duke@435 | 554 | // We assume we can assign processorid_t's to uint's. |
duke@435 | 555 | assert(sizeof(processorid_t) == sizeof(uint), |
duke@435 | 556 | "can't convert processorid_t to uint"); |
duke@435 | 557 | // Quick check to see if we won't succeed. |
duke@435 | 558 | if (id_length < distribution_length) { |
duke@435 | 559 | return false; |
duke@435 | 560 | } |
duke@435 | 561 | // Assign processor ids to the distribution. |
duke@435 | 562 | // Try to shuffle processors to distribute work across boards, |
duke@435 | 563 | // assuming 4 processors per board. |
duke@435 | 564 | const uint processors_per_board = ProcessDistributionStride; |
duke@435 | 565 | // Find the maximum processor id. |
duke@435 | 566 | processorid_t max_id = 0; |
duke@435 | 567 | for (uint m = 0; m < id_length; m += 1) { |
duke@435 | 568 | max_id = MAX2(max_id, id_array[m]); |
duke@435 | 569 | } |
duke@435 | 570 | // The next id, to limit loops. |
duke@435 | 571 | const processorid_t limit_id = max_id + 1; |
duke@435 | 572 | // Make up markers for available processors. |
duke@435 | 573 | bool* available_id = NEW_C_HEAP_ARRAY(bool, limit_id); |
duke@435 | 574 | for (uint c = 0; c < limit_id; c += 1) { |
duke@435 | 575 | available_id[c] = false; |
duke@435 | 576 | } |
duke@435 | 577 | for (uint a = 0; a < id_length; a += 1) { |
duke@435 | 578 | available_id[id_array[a]] = true; |
duke@435 | 579 | } |
duke@435 | 580 | // Step by "boards", then by "slot", copying to "assigned". |
duke@435 | 581 | // NEEDS_CLEANUP: The assignment of processors should be stateful, |
duke@435 | 582 | // remembering which processors have been assigned by |
duke@435 | 583 | // previous calls, etc., so as to distribute several |
duke@435 | 584 | // independent calls of this method. What we'd like is |
duke@435 | 585 | // It would be nice to have an API that let us ask |
duke@435 | 586 | // how many processes are bound to a processor, |
duke@435 | 587 | // but we don't have that, either. |
duke@435 | 588 | // In the short term, "board" is static so that |
duke@435 | 589 | // subsequent distributions don't all start at board 0. |
duke@435 | 590 | static uint board = 0; |
duke@435 | 591 | uint assigned = 0; |
duke@435 | 592 | // Until we've found enough processors .... |
duke@435 | 593 | while (assigned < distribution_length) { |
duke@435 | 594 | // ... find the next available processor in the board. |
duke@435 | 595 | for (uint slot = 0; slot < processors_per_board; slot += 1) { |
duke@435 | 596 | uint try_id = board * processors_per_board + slot; |
duke@435 | 597 | if ((try_id < limit_id) && (available_id[try_id] == true)) { |
duke@435 | 598 | distribution[assigned] = try_id; |
duke@435 | 599 | available_id[try_id] = false; |
duke@435 | 600 | assigned += 1; |
duke@435 | 601 | break; |
duke@435 | 602 | } |
duke@435 | 603 | } |
duke@435 | 604 | board += 1; |
duke@435 | 605 | if (board * processors_per_board + 0 >= limit_id) { |
duke@435 | 606 | board = 0; |
duke@435 | 607 | } |
duke@435 | 608 | } |
duke@435 | 609 | if (available_id != NULL) { |
duke@435 | 610 | FREE_C_HEAP_ARRAY(bool, available_id); |
duke@435 | 611 | } |
duke@435 | 612 | return true; |
duke@435 | 613 | } |
duke@435 | 614 | |
duke@435 | 615 | bool os::distribute_processes(uint length, uint* distribution) { |
duke@435 | 616 | bool result = false; |
duke@435 | 617 | // Find the processor id's of all the available CPUs. |
duke@435 | 618 | processorid_t* id_array = NULL; |
duke@435 | 619 | uint id_length = 0; |
duke@435 | 620 | // There are some races between querying information and using it, |
duke@435 | 621 | // since processor sets can change dynamically. |
duke@435 | 622 | psetid_t pset = PS_NONE; |
duke@435 | 623 | // Are we running in a processor set? |
duke@435 | 624 | if ((pset_bind(PS_QUERY, P_PID, P_MYID, &pset) == 0) && pset != PS_NONE) { |
duke@435 | 625 | result = find_processors_in_pset(pset, &id_array, &id_length); |
duke@435 | 626 | } else { |
duke@435 | 627 | result = find_processors_online(&id_array, &id_length); |
duke@435 | 628 | } |
duke@435 | 629 | if (result == true) { |
duke@435 | 630 | if (id_length >= length) { |
duke@435 | 631 | result = assign_distribution(id_array, id_length, distribution, length); |
duke@435 | 632 | } else { |
duke@435 | 633 | result = false; |
duke@435 | 634 | } |
duke@435 | 635 | } |
duke@435 | 636 | if (id_array != NULL) { |
duke@435 | 637 | FREE_C_HEAP_ARRAY(processorid_t, id_array); |
duke@435 | 638 | } |
duke@435 | 639 | return result; |
duke@435 | 640 | } |
duke@435 | 641 | |
duke@435 | 642 | bool os::bind_to_processor(uint processor_id) { |
duke@435 | 643 | // We assume that a processorid_t can be stored in a uint. |
duke@435 | 644 | assert(sizeof(uint) == sizeof(processorid_t), |
duke@435 | 645 | "can't convert uint to processorid_t"); |
duke@435 | 646 | int bind_result = |
duke@435 | 647 | processor_bind(P_LWPID, // bind LWP. |
duke@435 | 648 | P_MYID, // bind current LWP. |
duke@435 | 649 | (processorid_t) processor_id, // id. |
duke@435 | 650 | NULL); // don't return old binding. |
duke@435 | 651 | return (bind_result == 0); |
duke@435 | 652 | } |
duke@435 | 653 | |
duke@435 | 654 | bool os::getenv(const char* name, char* buffer, int len) { |
duke@435 | 655 | char* val = ::getenv( name ); |
duke@435 | 656 | if ( val == NULL |
duke@435 | 657 | || strlen(val) + 1 > len ) { |
duke@435 | 658 | if (len > 0) buffer[0] = 0; // return a null string |
duke@435 | 659 | return false; |
duke@435 | 660 | } |
duke@435 | 661 | strcpy( buffer, val ); |
duke@435 | 662 | return true; |
duke@435 | 663 | } |
duke@435 | 664 | |
duke@435 | 665 | |
duke@435 | 666 | // Return true if user is running as root. |
duke@435 | 667 | |
duke@435 | 668 | bool os::have_special_privileges() { |
duke@435 | 669 | static bool init = false; |
duke@435 | 670 | static bool privileges = false; |
duke@435 | 671 | if (!init) { |
duke@435 | 672 | privileges = (getuid() != geteuid()) || (getgid() != getegid()); |
duke@435 | 673 | init = true; |
duke@435 | 674 | } |
duke@435 | 675 | return privileges; |
duke@435 | 676 | } |
duke@435 | 677 | |
duke@435 | 678 | |
duke@435 | 679 | static char* get_property(char* name, char* buffer, int buffer_size) { |
duke@435 | 680 | if (os::getenv(name, buffer, buffer_size)) { |
duke@435 | 681 | return buffer; |
duke@435 | 682 | } |
duke@435 | 683 | static char empty[] = ""; |
duke@435 | 684 | return empty; |
duke@435 | 685 | } |
duke@435 | 686 | |
duke@435 | 687 | |
duke@435 | 688 | void os::init_system_properties_values() { |
duke@435 | 689 | char arch[12]; |
duke@435 | 690 | sysinfo(SI_ARCHITECTURE, arch, sizeof(arch)); |
duke@435 | 691 | |
duke@435 | 692 | // The next steps are taken in the product version: |
duke@435 | 693 | // |
duke@435 | 694 | // Obtain the JAVA_HOME value from the location of libjvm[_g].so. |
duke@435 | 695 | // This library should be located at: |
duke@435 | 696 | // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm[_g].so. |
duke@435 | 697 | // |
duke@435 | 698 | // If "/jre/lib/" appears at the right place in the path, then we |
duke@435 | 699 | // assume libjvm[_g].so is installed in a JDK and we use this path. |
duke@435 | 700 | // |
duke@435 | 701 | // Otherwise exit with message: "Could not create the Java virtual machine." |
duke@435 | 702 | // |
duke@435 | 703 | // The following extra steps are taken in the debugging version: |
duke@435 | 704 | // |
duke@435 | 705 | // If "/jre/lib/" does NOT appear at the right place in the path |
duke@435 | 706 | // instead of exit check for $JAVA_HOME environment variable. |
duke@435 | 707 | // |
duke@435 | 708 | // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>, |
duke@435 | 709 | // then we append a fake suffix "hotspot/libjvm[_g].so" to this path so |
duke@435 | 710 | // it looks like libjvm[_g].so is installed there |
duke@435 | 711 | // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm[_g].so. |
duke@435 | 712 | // |
duke@435 | 713 | // Otherwise exit. |
duke@435 | 714 | // |
duke@435 | 715 | // Important note: if the location of libjvm.so changes this |
duke@435 | 716 | // code needs to be changed accordingly. |
duke@435 | 717 | |
duke@435 | 718 | // The next few definitions allow the code to be verbatim: |
duke@435 | 719 | #define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n)) |
duke@435 | 720 | #define free(p) FREE_C_HEAP_ARRAY(char, p) |
duke@435 | 721 | #define getenv(n) ::getenv(n) |
duke@435 | 722 | |
duke@435 | 723 | #define EXTENSIONS_DIR "/lib/ext" |
duke@435 | 724 | #define ENDORSED_DIR "/lib/endorsed" |
duke@435 | 725 | #define COMMON_DIR "/usr/jdk/packages" |
duke@435 | 726 | |
duke@435 | 727 | { |
duke@435 | 728 | /* sysclasspath, java_home, dll_dir */ |
duke@435 | 729 | { |
duke@435 | 730 | char *home_path; |
duke@435 | 731 | char *dll_path; |
duke@435 | 732 | char *pslash; |
duke@435 | 733 | char buf[MAXPATHLEN]; |
duke@435 | 734 | os::jvm_path(buf, sizeof(buf)); |
duke@435 | 735 | |
duke@435 | 736 | // Found the full path to libjvm.so. |
duke@435 | 737 | // Now cut the path to <java_home>/jre if we can. |
duke@435 | 738 | *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */ |
duke@435 | 739 | pslash = strrchr(buf, '/'); |
duke@435 | 740 | if (pslash != NULL) |
duke@435 | 741 | *pslash = '\0'; /* get rid of /{client|server|hotspot} */ |
duke@435 | 742 | dll_path = malloc(strlen(buf) + 1); |
duke@435 | 743 | if (dll_path == NULL) |
duke@435 | 744 | return; |
duke@435 | 745 | strcpy(dll_path, buf); |
duke@435 | 746 | Arguments::set_dll_dir(dll_path); |
duke@435 | 747 | |
duke@435 | 748 | if (pslash != NULL) { |
duke@435 | 749 | pslash = strrchr(buf, '/'); |
duke@435 | 750 | if (pslash != NULL) { |
duke@435 | 751 | *pslash = '\0'; /* get rid of /<arch> */ |
duke@435 | 752 | pslash = strrchr(buf, '/'); |
duke@435 | 753 | if (pslash != NULL) |
duke@435 | 754 | *pslash = '\0'; /* get rid of /lib */ |
duke@435 | 755 | } |
duke@435 | 756 | } |
duke@435 | 757 | |
duke@435 | 758 | home_path = malloc(strlen(buf) + 1); |
duke@435 | 759 | if (home_path == NULL) |
duke@435 | 760 | return; |
duke@435 | 761 | strcpy(home_path, buf); |
duke@435 | 762 | Arguments::set_java_home(home_path); |
duke@435 | 763 | |
duke@435 | 764 | if (!set_boot_path('/', ':')) |
duke@435 | 765 | return; |
duke@435 | 766 | } |
duke@435 | 767 | |
duke@435 | 768 | /* |
duke@435 | 769 | * Where to look for native libraries |
duke@435 | 770 | */ |
duke@435 | 771 | { |
duke@435 | 772 | // Use dlinfo() to determine the correct java.library.path. |
duke@435 | 773 | // |
duke@435 | 774 | // If we're launched by the Java launcher, and the user |
duke@435 | 775 | // does not set java.library.path explicitly on the commandline, |
duke@435 | 776 | // the Java launcher sets LD_LIBRARY_PATH for us and unsets |
duke@435 | 777 | // LD_LIBRARY_PATH_32 and LD_LIBRARY_PATH_64. In this case |
duke@435 | 778 | // dlinfo returns LD_LIBRARY_PATH + crle settings (including |
duke@435 | 779 | // /usr/lib), which is exactly what we want. |
duke@435 | 780 | // |
duke@435 | 781 | // If the user does set java.library.path, it completely |
duke@435 | 782 | // overwrites this setting, and always has. |
duke@435 | 783 | // |
duke@435 | 784 | // If we're not launched by the Java launcher, we may |
duke@435 | 785 | // get here with any/all of the LD_LIBRARY_PATH[_32|64] |
duke@435 | 786 | // settings. Again, dlinfo does exactly what we want. |
duke@435 | 787 | |
duke@435 | 788 | Dl_serinfo _info, *info = &_info; |
duke@435 | 789 | Dl_serpath *path; |
duke@435 | 790 | char* library_path; |
duke@435 | 791 | char *common_path; |
duke@435 | 792 | int i; |
duke@435 | 793 | |
duke@435 | 794 | // determine search path count and required buffer size |
duke@435 | 795 | if (dlinfo(RTLD_SELF, RTLD_DI_SERINFOSIZE, (void *)info) == -1) { |
duke@435 | 796 | vm_exit_during_initialization("dlinfo SERINFOSIZE request", dlerror()); |
duke@435 | 797 | } |
duke@435 | 798 | |
duke@435 | 799 | // allocate new buffer and initialize |
duke@435 | 800 | info = (Dl_serinfo*)malloc(_info.dls_size); |
duke@435 | 801 | if (info == NULL) { |
duke@435 | 802 | vm_exit_out_of_memory(_info.dls_size, |
duke@435 | 803 | "init_system_properties_values info"); |
duke@435 | 804 | } |
duke@435 | 805 | info->dls_size = _info.dls_size; |
duke@435 | 806 | info->dls_cnt = _info.dls_cnt; |
duke@435 | 807 | |
duke@435 | 808 | // obtain search path information |
duke@435 | 809 | if (dlinfo(RTLD_SELF, RTLD_DI_SERINFO, (void *)info) == -1) { |
duke@435 | 810 | free(info); |
duke@435 | 811 | vm_exit_during_initialization("dlinfo SERINFO request", dlerror()); |
duke@435 | 812 | } |
duke@435 | 813 | |
duke@435 | 814 | path = &info->dls_serpath[0]; |
duke@435 | 815 | |
duke@435 | 816 | // Note: Due to a legacy implementation, most of the library path |
duke@435 | 817 | // is set in the launcher. This was to accomodate linking restrictions |
duke@435 | 818 | // on legacy Solaris implementations (which are no longer supported). |
duke@435 | 819 | // Eventually, all the library path setting will be done here. |
duke@435 | 820 | // |
duke@435 | 821 | // However, to prevent the proliferation of improperly built native |
duke@435 | 822 | // libraries, the new path component /usr/jdk/packages is added here. |
duke@435 | 823 | |
duke@435 | 824 | // Determine the actual CPU architecture. |
duke@435 | 825 | char cpu_arch[12]; |
duke@435 | 826 | sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); |
duke@435 | 827 | #ifdef _LP64 |
duke@435 | 828 | // If we are a 64-bit vm, perform the following translations: |
duke@435 | 829 | // sparc -> sparcv9 |
duke@435 | 830 | // i386 -> amd64 |
duke@435 | 831 | if (strcmp(cpu_arch, "sparc") == 0) |
duke@435 | 832 | strcat(cpu_arch, "v9"); |
duke@435 | 833 | else if (strcmp(cpu_arch, "i386") == 0) |
duke@435 | 834 | strcpy(cpu_arch, "amd64"); |
duke@435 | 835 | #endif |
duke@435 | 836 | |
duke@435 | 837 | // Construct the invariant part of ld_library_path. Note that the |
duke@435 | 838 | // space for the colon and the trailing null are provided by the |
duke@435 | 839 | // nulls included by the sizeof operator. |
duke@435 | 840 | size_t bufsize = sizeof(COMMON_DIR) + sizeof("/lib/") + strlen(cpu_arch); |
duke@435 | 841 | common_path = malloc(bufsize); |
duke@435 | 842 | if (common_path == NULL) { |
duke@435 | 843 | free(info); |
duke@435 | 844 | vm_exit_out_of_memory(bufsize, |
duke@435 | 845 | "init_system_properties_values common_path"); |
duke@435 | 846 | } |
duke@435 | 847 | sprintf(common_path, COMMON_DIR "/lib/%s", cpu_arch); |
duke@435 | 848 | |
duke@435 | 849 | // struct size is more than sufficient for the path components obtained |
duke@435 | 850 | // through the dlinfo() call, so only add additional space for the path |
duke@435 | 851 | // components explicitly added here. |
duke@435 | 852 | bufsize = info->dls_size + strlen(common_path); |
duke@435 | 853 | library_path = malloc(bufsize); |
duke@435 | 854 | if (library_path == NULL) { |
duke@435 | 855 | free(info); |
duke@435 | 856 | free(common_path); |
duke@435 | 857 | vm_exit_out_of_memory(bufsize, |
duke@435 | 858 | "init_system_properties_values library_path"); |
duke@435 | 859 | } |
duke@435 | 860 | library_path[0] = '\0'; |
duke@435 | 861 | |
duke@435 | 862 | // Construct the desired Java library path from the linker's library |
duke@435 | 863 | // search path. |
duke@435 | 864 | // |
duke@435 | 865 | // For compatibility, it is optimal that we insert the additional path |
duke@435 | 866 | // components specific to the Java VM after those components specified |
duke@435 | 867 | // in LD_LIBRARY_PATH (if any) but before those added by the ld.so |
duke@435 | 868 | // infrastructure. |
duke@435 | 869 | if (info->dls_cnt == 0) { // Not sure this can happen, but allow for it |
duke@435 | 870 | strcpy(library_path, common_path); |
duke@435 | 871 | } else { |
duke@435 | 872 | int inserted = 0; |
duke@435 | 873 | for (i = 0; i < info->dls_cnt; i++, path++) { |
duke@435 | 874 | uint_t flags = path->dls_flags & LA_SER_MASK; |
duke@435 | 875 | if (((flags & LA_SER_LIBPATH) == 0) && !inserted) { |
duke@435 | 876 | strcat(library_path, common_path); |
duke@435 | 877 | strcat(library_path, os::path_separator()); |
duke@435 | 878 | inserted = 1; |
duke@435 | 879 | } |
duke@435 | 880 | strcat(library_path, path->dls_name); |
duke@435 | 881 | strcat(library_path, os::path_separator()); |
duke@435 | 882 | } |
duke@435 | 883 | // eliminate trailing path separator |
duke@435 | 884 | library_path[strlen(library_path)-1] = '\0'; |
duke@435 | 885 | } |
duke@435 | 886 | |
duke@435 | 887 | // happens before argument parsing - can't use a trace flag |
duke@435 | 888 | // tty->print_raw("init_system_properties_values: native lib path: "); |
duke@435 | 889 | // tty->print_raw_cr(library_path); |
duke@435 | 890 | |
duke@435 | 891 | // callee copies into its own buffer |
duke@435 | 892 | Arguments::set_library_path(library_path); |
duke@435 | 893 | |
duke@435 | 894 | free(common_path); |
duke@435 | 895 | free(library_path); |
duke@435 | 896 | free(info); |
duke@435 | 897 | } |
duke@435 | 898 | |
duke@435 | 899 | /* |
duke@435 | 900 | * Extensions directories. |
duke@435 | 901 | * |
duke@435 | 902 | * Note that the space for the colon and the trailing null are provided |
duke@435 | 903 | * by the nulls included by the sizeof operator (so actually one byte more |
duke@435 | 904 | * than necessary is allocated). |
duke@435 | 905 | */ |
duke@435 | 906 | { |
duke@435 | 907 | char *buf = (char *) malloc(strlen(Arguments::get_java_home()) + |
duke@435 | 908 | sizeof(EXTENSIONS_DIR) + sizeof(COMMON_DIR) + |
duke@435 | 909 | sizeof(EXTENSIONS_DIR)); |
duke@435 | 910 | sprintf(buf, "%s" EXTENSIONS_DIR ":" COMMON_DIR EXTENSIONS_DIR, |
duke@435 | 911 | Arguments::get_java_home()); |
duke@435 | 912 | Arguments::set_ext_dirs(buf); |
duke@435 | 913 | } |
duke@435 | 914 | |
duke@435 | 915 | /* Endorsed standards default directory. */ |
duke@435 | 916 | { |
duke@435 | 917 | char * buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR)); |
duke@435 | 918 | sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home()); |
duke@435 | 919 | Arguments::set_endorsed_dirs(buf); |
duke@435 | 920 | } |
duke@435 | 921 | } |
duke@435 | 922 | |
duke@435 | 923 | #undef malloc |
duke@435 | 924 | #undef free |
duke@435 | 925 | #undef getenv |
duke@435 | 926 | #undef EXTENSIONS_DIR |
duke@435 | 927 | #undef ENDORSED_DIR |
duke@435 | 928 | #undef COMMON_DIR |
duke@435 | 929 | |
duke@435 | 930 | } |
duke@435 | 931 | |
duke@435 | 932 | void os::breakpoint() { |
duke@435 | 933 | BREAKPOINT; |
duke@435 | 934 | } |
duke@435 | 935 | |
duke@435 | 936 | bool os::obsolete_option(const JavaVMOption *option) |
duke@435 | 937 | { |
duke@435 | 938 | if (!strncmp(option->optionString, "-Xt", 3)) { |
duke@435 | 939 | return true; |
duke@435 | 940 | } else if (!strncmp(option->optionString, "-Xtm", 4)) { |
duke@435 | 941 | return true; |
duke@435 | 942 | } else if (!strncmp(option->optionString, "-Xverifyheap", 12)) { |
duke@435 | 943 | return true; |
duke@435 | 944 | } else if (!strncmp(option->optionString, "-Xmaxjitcodesize", 16)) { |
duke@435 | 945 | return true; |
duke@435 | 946 | } |
duke@435 | 947 | return false; |
duke@435 | 948 | } |
duke@435 | 949 | |
duke@435 | 950 | bool os::Solaris::valid_stack_address(Thread* thread, address sp) { |
duke@435 | 951 | address stackStart = (address)thread->stack_base(); |
duke@435 | 952 | address stackEnd = (address)(stackStart - (address)thread->stack_size()); |
duke@435 | 953 | if (sp < stackStart && sp >= stackEnd ) return true; |
duke@435 | 954 | return false; |
duke@435 | 955 | } |
duke@435 | 956 | |
duke@435 | 957 | extern "C" void breakpoint() { |
duke@435 | 958 | // use debugger to set breakpoint here |
duke@435 | 959 | } |
duke@435 | 960 | |
duke@435 | 961 | // Returns an estimate of the current stack pointer. Result must be guaranteed to |
duke@435 | 962 | // point into the calling threads stack, and be no lower than the current stack |
duke@435 | 963 | // pointer. |
duke@435 | 964 | address os::current_stack_pointer() { |
duke@435 | 965 | volatile int dummy; |
duke@435 | 966 | address sp = (address)&dummy + 8; // %%%% need to confirm if this is right |
duke@435 | 967 | return sp; |
duke@435 | 968 | } |
duke@435 | 969 | |
duke@435 | 970 | static thread_t main_thread; |
duke@435 | 971 | |
duke@435 | 972 | // Thread start routine for all new Java threads |
duke@435 | 973 | extern "C" void* java_start(void* thread_addr) { |
duke@435 | 974 | // Try to randomize the cache line index of hot stack frames. |
duke@435 | 975 | // This helps when threads of the same stack traces evict each other's |
duke@435 | 976 | // cache lines. The threads can be either from the same JVM instance, or |
duke@435 | 977 | // from different JVM instances. The benefit is especially true for |
duke@435 | 978 | // processors with hyperthreading technology. |
duke@435 | 979 | static int counter = 0; |
duke@435 | 980 | int pid = os::current_process_id(); |
duke@435 | 981 | alloca(((pid ^ counter++) & 7) * 128); |
duke@435 | 982 | |
duke@435 | 983 | int prio; |
duke@435 | 984 | Thread* thread = (Thread*)thread_addr; |
duke@435 | 985 | OSThread* osthr = thread->osthread(); |
duke@435 | 986 | |
duke@435 | 987 | osthr->set_lwp_id( _lwp_self() ); // Store lwp in case we are bound |
duke@435 | 988 | thread->_schedctl = (void *) schedctl_init () ; |
duke@435 | 989 | |
duke@435 | 990 | if (UseNUMA) { |
duke@435 | 991 | int lgrp_id = os::numa_get_group_id(); |
duke@435 | 992 | if (lgrp_id != -1) { |
duke@435 | 993 | thread->set_lgrp_id(lgrp_id); |
duke@435 | 994 | } |
duke@435 | 995 | } |
duke@435 | 996 | |
duke@435 | 997 | // If the creator called set priority before we started, |
duke@435 | 998 | // we need to call set priority now that we have an lwp. |
duke@435 | 999 | // Get the priority from libthread and set the priority |
duke@435 | 1000 | // for the new Solaris lwp. |
duke@435 | 1001 | if ( osthr->thread_id() != -1 ) { |
duke@435 | 1002 | if ( UseThreadPriorities ) { |
duke@435 | 1003 | thr_getprio(osthr->thread_id(), &prio); |
duke@435 | 1004 | if (ThreadPriorityVerbose) { |
duke@435 | 1005 | tty->print_cr("Starting Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT ", setting priority: %d\n", |
duke@435 | 1006 | osthr->thread_id(), osthr->lwp_id(), prio ); |
duke@435 | 1007 | } |
duke@435 | 1008 | os::set_native_priority(thread, prio); |
duke@435 | 1009 | } |
duke@435 | 1010 | } else if (ThreadPriorityVerbose) { |
duke@435 | 1011 | warning("Can't set priority in _start routine, thread id hasn't been set\n"); |
duke@435 | 1012 | } |
duke@435 | 1013 | |
duke@435 | 1014 | assert(osthr->get_state() == RUNNABLE, "invalid os thread state"); |
duke@435 | 1015 | |
duke@435 | 1016 | // initialize signal mask for this thread |
duke@435 | 1017 | os::Solaris::hotspot_sigmask(thread); |
duke@435 | 1018 | |
duke@435 | 1019 | thread->run(); |
duke@435 | 1020 | |
duke@435 | 1021 | // One less thread is executing |
duke@435 | 1022 | // When the VMThread gets here, the main thread may have already exited |
duke@435 | 1023 | // which frees the CodeHeap containing the Atomic::dec code |
duke@435 | 1024 | if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) { |
duke@435 | 1025 | Atomic::dec(&os::Solaris::_os_thread_count); |
duke@435 | 1026 | } |
duke@435 | 1027 | |
duke@435 | 1028 | if (UseDetachedThreads) { |
duke@435 | 1029 | thr_exit(NULL); |
duke@435 | 1030 | ShouldNotReachHere(); |
duke@435 | 1031 | } |
duke@435 | 1032 | return NULL; |
duke@435 | 1033 | } |
duke@435 | 1034 | |
duke@435 | 1035 | static OSThread* create_os_thread(Thread* thread, thread_t thread_id) { |
duke@435 | 1036 | // Allocate the OSThread object |
duke@435 | 1037 | OSThread* osthread = new OSThread(NULL, NULL); |
duke@435 | 1038 | if (osthread == NULL) return NULL; |
duke@435 | 1039 | |
duke@435 | 1040 | // Store info on the Solaris thread into the OSThread |
duke@435 | 1041 | osthread->set_thread_id(thread_id); |
duke@435 | 1042 | osthread->set_lwp_id(_lwp_self()); |
duke@435 | 1043 | thread->_schedctl = (void *) schedctl_init () ; |
duke@435 | 1044 | |
duke@435 | 1045 | if (UseNUMA) { |
duke@435 | 1046 | int lgrp_id = os::numa_get_group_id(); |
duke@435 | 1047 | if (lgrp_id != -1) { |
duke@435 | 1048 | thread->set_lgrp_id(lgrp_id); |
duke@435 | 1049 | } |
duke@435 | 1050 | } |
duke@435 | 1051 | |
duke@435 | 1052 | if ( ThreadPriorityVerbose ) { |
duke@435 | 1053 | tty->print_cr("In create_os_thread, Thread " INTPTR_FORMAT ", LWP is " INTPTR_FORMAT "\n", |
duke@435 | 1054 | osthread->thread_id(), osthread->lwp_id() ); |
duke@435 | 1055 | } |
duke@435 | 1056 | |
duke@435 | 1057 | // Initial thread state is INITIALIZED, not SUSPENDED |
duke@435 | 1058 | osthread->set_state(INITIALIZED); |
duke@435 | 1059 | |
duke@435 | 1060 | return osthread; |
duke@435 | 1061 | } |
duke@435 | 1062 | |
duke@435 | 1063 | void os::Solaris::hotspot_sigmask(Thread* thread) { |
duke@435 | 1064 | |
duke@435 | 1065 | //Save caller's signal mask |
duke@435 | 1066 | sigset_t sigmask; |
duke@435 | 1067 | thr_sigsetmask(SIG_SETMASK, NULL, &sigmask); |
duke@435 | 1068 | OSThread *osthread = thread->osthread(); |
duke@435 | 1069 | osthread->set_caller_sigmask(sigmask); |
duke@435 | 1070 | |
duke@435 | 1071 | thr_sigsetmask(SIG_UNBLOCK, os::Solaris::unblocked_signals(), NULL); |
duke@435 | 1072 | if (!ReduceSignalUsage) { |
duke@435 | 1073 | if (thread->is_VM_thread()) { |
duke@435 | 1074 | // Only the VM thread handles BREAK_SIGNAL ... |
duke@435 | 1075 | thr_sigsetmask(SIG_UNBLOCK, vm_signals(), NULL); |
duke@435 | 1076 | } else { |
duke@435 | 1077 | // ... all other threads block BREAK_SIGNAL |
duke@435 | 1078 | assert(!sigismember(vm_signals(), SIGINT), "SIGINT should not be blocked"); |
duke@435 | 1079 | thr_sigsetmask(SIG_BLOCK, vm_signals(), NULL); |
duke@435 | 1080 | } |
duke@435 | 1081 | } |
duke@435 | 1082 | } |
duke@435 | 1083 | |
duke@435 | 1084 | bool os::create_attached_thread(JavaThread* thread) { |
duke@435 | 1085 | #ifdef ASSERT |
duke@435 | 1086 | thread->verify_not_published(); |
duke@435 | 1087 | #endif |
duke@435 | 1088 | OSThread* osthread = create_os_thread(thread, thr_self()); |
duke@435 | 1089 | if (osthread == NULL) { |
duke@435 | 1090 | return false; |
duke@435 | 1091 | } |
duke@435 | 1092 | |
duke@435 | 1093 | // Initial thread state is RUNNABLE |
duke@435 | 1094 | osthread->set_state(RUNNABLE); |
duke@435 | 1095 | thread->set_osthread(osthread); |
duke@435 | 1096 | |
duke@435 | 1097 | // initialize signal mask for this thread |
duke@435 | 1098 | // and save the caller's signal mask |
duke@435 | 1099 | os::Solaris::hotspot_sigmask(thread); |
duke@435 | 1100 | |
duke@435 | 1101 | return true; |
duke@435 | 1102 | } |
duke@435 | 1103 | |
duke@435 | 1104 | bool os::create_main_thread(JavaThread* thread) { |
duke@435 | 1105 | #ifdef ASSERT |
duke@435 | 1106 | thread->verify_not_published(); |
duke@435 | 1107 | #endif |
duke@435 | 1108 | if (_starting_thread == NULL) { |
duke@435 | 1109 | _starting_thread = create_os_thread(thread, main_thread); |
duke@435 | 1110 | if (_starting_thread == NULL) { |
duke@435 | 1111 | return false; |
duke@435 | 1112 | } |
duke@435 | 1113 | } |
duke@435 | 1114 | |
duke@435 | 1115 | // The primodial thread is runnable from the start |
duke@435 | 1116 | _starting_thread->set_state(RUNNABLE); |
duke@435 | 1117 | |
duke@435 | 1118 | thread->set_osthread(_starting_thread); |
duke@435 | 1119 | |
duke@435 | 1120 | // initialize signal mask for this thread |
duke@435 | 1121 | // and save the caller's signal mask |
duke@435 | 1122 | os::Solaris::hotspot_sigmask(thread); |
duke@435 | 1123 | |
duke@435 | 1124 | return true; |
duke@435 | 1125 | } |
duke@435 | 1126 | |
duke@435 | 1127 | // _T2_libthread is true if we believe we are running with the newer |
duke@435 | 1128 | // SunSoft lwp/libthread.so (2.8 patch, 2.9 default) |
duke@435 | 1129 | bool os::Solaris::_T2_libthread = false; |
duke@435 | 1130 | |
duke@435 | 1131 | bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) { |
duke@435 | 1132 | // Allocate the OSThread object |
duke@435 | 1133 | OSThread* osthread = new OSThread(NULL, NULL); |
duke@435 | 1134 | if (osthread == NULL) { |
duke@435 | 1135 | return false; |
duke@435 | 1136 | } |
duke@435 | 1137 | |
duke@435 | 1138 | if ( ThreadPriorityVerbose ) { |
duke@435 | 1139 | char *thrtyp; |
duke@435 | 1140 | switch ( thr_type ) { |
duke@435 | 1141 | case vm_thread: |
duke@435 | 1142 | thrtyp = (char *)"vm"; |
duke@435 | 1143 | break; |
duke@435 | 1144 | case cgc_thread: |
duke@435 | 1145 | thrtyp = (char *)"cgc"; |
duke@435 | 1146 | break; |
duke@435 | 1147 | case pgc_thread: |
duke@435 | 1148 | thrtyp = (char *)"pgc"; |
duke@435 | 1149 | break; |
duke@435 | 1150 | case java_thread: |
duke@435 | 1151 | thrtyp = (char *)"java"; |
duke@435 | 1152 | break; |
duke@435 | 1153 | case compiler_thread: |
duke@435 | 1154 | thrtyp = (char *)"compiler"; |
duke@435 | 1155 | break; |
duke@435 | 1156 | case watcher_thread: |
duke@435 | 1157 | thrtyp = (char *)"watcher"; |
duke@435 | 1158 | break; |
duke@435 | 1159 | default: |
duke@435 | 1160 | thrtyp = (char *)"unknown"; |
duke@435 | 1161 | break; |
duke@435 | 1162 | } |
duke@435 | 1163 | tty->print_cr("In create_thread, creating a %s thread\n", thrtyp); |
duke@435 | 1164 | } |
duke@435 | 1165 | |
duke@435 | 1166 | // Calculate stack size if it's not specified by caller. |
duke@435 | 1167 | if (stack_size == 0) { |
duke@435 | 1168 | // The default stack size 1M (2M for LP64). |
duke@435 | 1169 | stack_size = (BytesPerWord >> 2) * K * K; |
duke@435 | 1170 | |
duke@435 | 1171 | switch (thr_type) { |
duke@435 | 1172 | case os::java_thread: |
duke@435 | 1173 | // Java threads use ThreadStackSize which default value can be changed with the flag -Xss |
duke@435 | 1174 | if (JavaThread::stack_size_at_create() > 0) stack_size = JavaThread::stack_size_at_create(); |
duke@435 | 1175 | break; |
duke@435 | 1176 | case os::compiler_thread: |
duke@435 | 1177 | if (CompilerThreadStackSize > 0) { |
duke@435 | 1178 | stack_size = (size_t)(CompilerThreadStackSize * K); |
duke@435 | 1179 | break; |
duke@435 | 1180 | } // else fall through: |
duke@435 | 1181 | // use VMThreadStackSize if CompilerThreadStackSize is not defined |
duke@435 | 1182 | case os::vm_thread: |
duke@435 | 1183 | case os::pgc_thread: |
duke@435 | 1184 | case os::cgc_thread: |
duke@435 | 1185 | case os::watcher_thread: |
duke@435 | 1186 | if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K); |
duke@435 | 1187 | break; |
duke@435 | 1188 | } |
duke@435 | 1189 | } |
duke@435 | 1190 | stack_size = MAX2(stack_size, os::Solaris::min_stack_allowed); |
duke@435 | 1191 | |
duke@435 | 1192 | // Initial state is ALLOCATED but not INITIALIZED |
duke@435 | 1193 | osthread->set_state(ALLOCATED); |
duke@435 | 1194 | |
duke@435 | 1195 | if (os::Solaris::_os_thread_count > os::Solaris::_os_thread_limit) { |
duke@435 | 1196 | // We got lots of threads. Check if we still have some address space left. |
duke@435 | 1197 | // Need to be at least 5Mb of unreserved address space. We do check by |
duke@435 | 1198 | // trying to reserve some. |
duke@435 | 1199 | const size_t VirtualMemoryBangSize = 20*K*K; |
duke@435 | 1200 | char* mem = os::reserve_memory(VirtualMemoryBangSize); |
duke@435 | 1201 | if (mem == NULL) { |
duke@435 | 1202 | delete osthread; |
duke@435 | 1203 | return false; |
duke@435 | 1204 | } else { |
duke@435 | 1205 | // Release the memory again |
duke@435 | 1206 | os::release_memory(mem, VirtualMemoryBangSize); |
duke@435 | 1207 | } |
duke@435 | 1208 | } |
duke@435 | 1209 | |
duke@435 | 1210 | // Setup osthread because the child thread may need it. |
duke@435 | 1211 | thread->set_osthread(osthread); |
duke@435 | 1212 | |
duke@435 | 1213 | // Create the Solaris thread |
duke@435 | 1214 | // explicit THR_BOUND for T2_libthread case in case |
duke@435 | 1215 | // that assumption is not accurate, but our alternate signal stack |
duke@435 | 1216 | // handling is based on it which must have bound threads |
duke@435 | 1217 | thread_t tid = 0; |
duke@435 | 1218 | long flags = (UseDetachedThreads ? THR_DETACHED : 0) | THR_SUSPENDED |
duke@435 | 1219 | | ((UseBoundThreads || os::Solaris::T2_libthread() || |
duke@435 | 1220 | (thr_type == vm_thread) || |
duke@435 | 1221 | (thr_type == cgc_thread) || |
duke@435 | 1222 | (thr_type == pgc_thread) || |
duke@435 | 1223 | (thr_type == compiler_thread && BackgroundCompilation)) ? |
duke@435 | 1224 | THR_BOUND : 0); |
duke@435 | 1225 | int status; |
duke@435 | 1226 | |
duke@435 | 1227 | // 4376845 -- libthread/kernel don't provide enough LWPs to utilize all CPUs. |
duke@435 | 1228 | // |
duke@435 | 1229 | // On multiprocessors systems, libthread sometimes under-provisions our |
duke@435 | 1230 | // process with LWPs. On a 30-way systems, for instance, we could have |
duke@435 | 1231 | // 50 user-level threads in ready state and only 2 or 3 LWPs assigned |
duke@435 | 1232 | // to our process. This can result in under utilization of PEs. |
duke@435 | 1233 | // I suspect the problem is related to libthread's LWP |
duke@435 | 1234 | // pool management and to the kernel's SIGBLOCKING "last LWP parked" |
duke@435 | 1235 | // upcall policy. |
duke@435 | 1236 | // |
duke@435 | 1237 | // The following code is palliative -- it attempts to ensure that our |
duke@435 | 1238 | // process has sufficient LWPs to take advantage of multiple PEs. |
duke@435 | 1239 | // Proper long-term cures include using user-level threads bound to LWPs |
duke@435 | 1240 | // (THR_BOUND) or using LWP-based synchronization. Note that there is a |
duke@435 | 1241 | // slight timing window with respect to sampling _os_thread_count, but |
duke@435 | 1242 | // the race is benign. Also, we should periodically recompute |
duke@435 | 1243 | // _processors_online as the min of SC_NPROCESSORS_ONLN and the |
duke@435 | 1244 | // the number of PEs in our partition. You might be tempted to use |
duke@435 | 1245 | // THR_NEW_LWP here, but I'd recommend against it as that could |
duke@435 | 1246 | // result in undesirable growth of the libthread's LWP pool. |
duke@435 | 1247 | // The fix below isn't sufficient; for instance, it doesn't take into count |
duke@435 | 1248 | // LWPs parked on IO. It does, however, help certain CPU-bound benchmarks. |
duke@435 | 1249 | // |
duke@435 | 1250 | // Some pathologies this scheme doesn't handle: |
duke@435 | 1251 | // * Threads can block, releasing the LWPs. The LWPs can age out. |
duke@435 | 1252 | // When a large number of threads become ready again there aren't |
duke@435 | 1253 | // enough LWPs available to service them. This can occur when the |
duke@435 | 1254 | // number of ready threads oscillates. |
duke@435 | 1255 | // * LWPs/Threads park on IO, thus taking the LWP out of circulation. |
duke@435 | 1256 | // |
duke@435 | 1257 | // Finally, we should call thr_setconcurrency() periodically to refresh |
duke@435 | 1258 | // the LWP pool and thwart the LWP age-out mechanism. |
duke@435 | 1259 | // The "+3" term provides a little slop -- we want to slightly overprovision. |
duke@435 | 1260 | |
duke@435 | 1261 | if (AdjustConcurrency && os::Solaris::_os_thread_count < (_processors_online+3)) { |
duke@435 | 1262 | if (!(flags & THR_BOUND)) { |
duke@435 | 1263 | thr_setconcurrency (os::Solaris::_os_thread_count); // avoid starvation |
duke@435 | 1264 | } |
duke@435 | 1265 | } |
duke@435 | 1266 | // Although this doesn't hurt, we should warn of undefined behavior |
duke@435 | 1267 | // when using unbound T1 threads with schedctl(). This should never |
duke@435 | 1268 | // happen, as the compiler and VM threads are always created bound |
duke@435 | 1269 | DEBUG_ONLY( |
duke@435 | 1270 | if ((VMThreadHintNoPreempt || CompilerThreadHintNoPreempt) && |
duke@435 | 1271 | (!os::Solaris::T2_libthread() && (!(flags & THR_BOUND))) && |
duke@435 | 1272 | ((thr_type == vm_thread) || (thr_type == cgc_thread) || |
duke@435 | 1273 | (thr_type == pgc_thread) || (thr_type == compiler_thread && BackgroundCompilation))) { |
duke@435 | 1274 | warning("schedctl behavior undefined when Compiler/VM/GC Threads are Unbound"); |
duke@435 | 1275 | } |
duke@435 | 1276 | ); |
duke@435 | 1277 | |
duke@435 | 1278 | |
duke@435 | 1279 | // Mark that we don't have an lwp or thread id yet. |
duke@435 | 1280 | // In case we attempt to set the priority before the thread starts. |
duke@435 | 1281 | osthread->set_lwp_id(-1); |
duke@435 | 1282 | osthread->set_thread_id(-1); |
duke@435 | 1283 | |
duke@435 | 1284 | status = thr_create(NULL, stack_size, java_start, thread, flags, &tid); |
duke@435 | 1285 | if (status != 0) { |
duke@435 | 1286 | if (PrintMiscellaneous && (Verbose || WizardMode)) { |
duke@435 | 1287 | perror("os::create_thread"); |
duke@435 | 1288 | } |
duke@435 | 1289 | thread->set_osthread(NULL); |
duke@435 | 1290 | // Need to clean up stuff we've allocated so far |
duke@435 | 1291 | delete osthread; |
duke@435 | 1292 | return false; |
duke@435 | 1293 | } |
duke@435 | 1294 | |
duke@435 | 1295 | Atomic::inc(&os::Solaris::_os_thread_count); |
duke@435 | 1296 | |
duke@435 | 1297 | // Store info on the Solaris thread into the OSThread |
duke@435 | 1298 | osthread->set_thread_id(tid); |
duke@435 | 1299 | |
duke@435 | 1300 | // Remember that we created this thread so we can set priority on it |
duke@435 | 1301 | osthread->set_vm_created(); |
duke@435 | 1302 | |
duke@435 | 1303 | // Set the default thread priority otherwise use NormalPriority |
duke@435 | 1304 | |
duke@435 | 1305 | if ( UseThreadPriorities ) { |
duke@435 | 1306 | thr_setprio(tid, (DefaultThreadPriority == -1) ? |
duke@435 | 1307 | java_to_os_priority[NormPriority] : |
duke@435 | 1308 | DefaultThreadPriority); |
duke@435 | 1309 | } |
duke@435 | 1310 | |
duke@435 | 1311 | // Initial thread state is INITIALIZED, not SUSPENDED |
duke@435 | 1312 | osthread->set_state(INITIALIZED); |
duke@435 | 1313 | |
duke@435 | 1314 | // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain |
duke@435 | 1315 | return true; |
duke@435 | 1316 | } |
duke@435 | 1317 | |
duke@435 | 1318 | /* defined for >= Solaris 10. This allows builds on earlier versions |
duke@435 | 1319 | * of Solaris to take advantage of the newly reserved Solaris JVM signals |
duke@435 | 1320 | * With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2 |
duke@435 | 1321 | * and -XX:+UseAltSigs does nothing since these should have no conflict |
duke@435 | 1322 | */ |
duke@435 | 1323 | #if !defined(SIGJVM1) |
duke@435 | 1324 | #define SIGJVM1 39 |
duke@435 | 1325 | #define SIGJVM2 40 |
duke@435 | 1326 | #endif |
duke@435 | 1327 | |
duke@435 | 1328 | debug_only(static bool signal_sets_initialized = false); |
duke@435 | 1329 | static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs; |
duke@435 | 1330 | int os::Solaris::_SIGinterrupt = INTERRUPT_SIGNAL; |
duke@435 | 1331 | int os::Solaris::_SIGasync = ASYNC_SIGNAL; |
duke@435 | 1332 | |
duke@435 | 1333 | bool os::Solaris::is_sig_ignored(int sig) { |
duke@435 | 1334 | struct sigaction oact; |
duke@435 | 1335 | sigaction(sig, (struct sigaction*)NULL, &oact); |
duke@435 | 1336 | void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction) |
duke@435 | 1337 | : CAST_FROM_FN_PTR(void*, oact.sa_handler); |
duke@435 | 1338 | if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN)) |
duke@435 | 1339 | return true; |
duke@435 | 1340 | else |
duke@435 | 1341 | return false; |
duke@435 | 1342 | } |
duke@435 | 1343 | |
duke@435 | 1344 | // Note: SIGRTMIN is a macro that calls sysconf() so it will |
duke@435 | 1345 | // dynamically detect SIGRTMIN value for the system at runtime, not buildtime |
duke@435 | 1346 | static bool isJVM1available() { |
duke@435 | 1347 | return SIGJVM1 < SIGRTMIN; |
duke@435 | 1348 | } |
duke@435 | 1349 | |
duke@435 | 1350 | void os::Solaris::signal_sets_init() { |
duke@435 | 1351 | // Should also have an assertion stating we are still single-threaded. |
duke@435 | 1352 | assert(!signal_sets_initialized, "Already initialized"); |
duke@435 | 1353 | // Fill in signals that are necessarily unblocked for all threads in |
duke@435 | 1354 | // the VM. Currently, we unblock the following signals: |
duke@435 | 1355 | // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden |
duke@435 | 1356 | // by -Xrs (=ReduceSignalUsage)); |
duke@435 | 1357 | // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all |
duke@435 | 1358 | // other threads. The "ReduceSignalUsage" boolean tells us not to alter |
duke@435 | 1359 | // the dispositions or masks wrt these signals. |
duke@435 | 1360 | // Programs embedding the VM that want to use the above signals for their |
duke@435 | 1361 | // own purposes must, at this time, use the "-Xrs" option to prevent |
duke@435 | 1362 | // interference with shutdown hooks and BREAK_SIGNAL thread dumping. |
duke@435 | 1363 | // (See bug 4345157, and other related bugs). |
duke@435 | 1364 | // In reality, though, unblocking these signals is really a nop, since |
duke@435 | 1365 | // these signals are not blocked by default. |
duke@435 | 1366 | sigemptyset(&unblocked_sigs); |
duke@435 | 1367 | sigemptyset(&allowdebug_blocked_sigs); |
duke@435 | 1368 | sigaddset(&unblocked_sigs, SIGILL); |
duke@435 | 1369 | sigaddset(&unblocked_sigs, SIGSEGV); |
duke@435 | 1370 | sigaddset(&unblocked_sigs, SIGBUS); |
duke@435 | 1371 | sigaddset(&unblocked_sigs, SIGFPE); |
duke@435 | 1372 | |
duke@435 | 1373 | if (isJVM1available) { |
duke@435 | 1374 | os::Solaris::set_SIGinterrupt(SIGJVM1); |
duke@435 | 1375 | os::Solaris::set_SIGasync(SIGJVM2); |
duke@435 | 1376 | } else if (UseAltSigs) { |
duke@435 | 1377 | os::Solaris::set_SIGinterrupt(ALT_INTERRUPT_SIGNAL); |
duke@435 | 1378 | os::Solaris::set_SIGasync(ALT_ASYNC_SIGNAL); |
duke@435 | 1379 | } else { |
duke@435 | 1380 | os::Solaris::set_SIGinterrupt(INTERRUPT_SIGNAL); |
duke@435 | 1381 | os::Solaris::set_SIGasync(ASYNC_SIGNAL); |
duke@435 | 1382 | } |
duke@435 | 1383 | |
duke@435 | 1384 | sigaddset(&unblocked_sigs, os::Solaris::SIGinterrupt()); |
duke@435 | 1385 | sigaddset(&unblocked_sigs, os::Solaris::SIGasync()); |
duke@435 | 1386 | |
duke@435 | 1387 | if (!ReduceSignalUsage) { |
duke@435 | 1388 | if (!os::Solaris::is_sig_ignored(SHUTDOWN1_SIGNAL)) { |
duke@435 | 1389 | sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL); |
duke@435 | 1390 | sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL); |
duke@435 | 1391 | } |
duke@435 | 1392 | if (!os::Solaris::is_sig_ignored(SHUTDOWN2_SIGNAL)) { |
duke@435 | 1393 | sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL); |
duke@435 | 1394 | sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL); |
duke@435 | 1395 | } |
duke@435 | 1396 | if (!os::Solaris::is_sig_ignored(SHUTDOWN3_SIGNAL)) { |
duke@435 | 1397 | sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL); |
duke@435 | 1398 | sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL); |
duke@435 | 1399 | } |
duke@435 | 1400 | } |
duke@435 | 1401 | // Fill in signals that are blocked by all but the VM thread. |
duke@435 | 1402 | sigemptyset(&vm_sigs); |
duke@435 | 1403 | if (!ReduceSignalUsage) |
duke@435 | 1404 | sigaddset(&vm_sigs, BREAK_SIGNAL); |
duke@435 | 1405 | debug_only(signal_sets_initialized = true); |
duke@435 | 1406 | |
duke@435 | 1407 | // For diagnostics only used in run_periodic_checks |
duke@435 | 1408 | sigemptyset(&check_signal_done); |
duke@435 | 1409 | } |
duke@435 | 1410 | |
duke@435 | 1411 | // These are signals that are unblocked while a thread is running Java. |
duke@435 | 1412 | // (For some reason, they get blocked by default.) |
duke@435 | 1413 | sigset_t* os::Solaris::unblocked_signals() { |
duke@435 | 1414 | assert(signal_sets_initialized, "Not initialized"); |
duke@435 | 1415 | return &unblocked_sigs; |
duke@435 | 1416 | } |
duke@435 | 1417 | |
duke@435 | 1418 | // These are the signals that are blocked while a (non-VM) thread is |
duke@435 | 1419 | // running Java. Only the VM thread handles these signals. |
duke@435 | 1420 | sigset_t* os::Solaris::vm_signals() { |
duke@435 | 1421 | assert(signal_sets_initialized, "Not initialized"); |
duke@435 | 1422 | return &vm_sigs; |
duke@435 | 1423 | } |
duke@435 | 1424 | |
duke@435 | 1425 | // These are signals that are blocked during cond_wait to allow debugger in |
duke@435 | 1426 | sigset_t* os::Solaris::allowdebug_blocked_signals() { |
duke@435 | 1427 | assert(signal_sets_initialized, "Not initialized"); |
duke@435 | 1428 | return &allowdebug_blocked_sigs; |
duke@435 | 1429 | } |
duke@435 | 1430 | |
duke@435 | 1431 | // First crack at OS-specific initialization, from inside the new thread. |
duke@435 | 1432 | void os::initialize_thread() { |
duke@435 | 1433 | int r = thr_main() ; |
duke@435 | 1434 | guarantee (r == 0 || r == 1, "CR6501650 or CR6493689") ; |
duke@435 | 1435 | if (r) { |
duke@435 | 1436 | JavaThread* jt = (JavaThread *)Thread::current(); |
duke@435 | 1437 | assert(jt != NULL,"Sanity check"); |
duke@435 | 1438 | size_t stack_size; |
duke@435 | 1439 | address base = jt->stack_base(); |
duke@435 | 1440 | if (Arguments::created_by_java_launcher()) { |
duke@435 | 1441 | // Use 2MB to allow for Solaris 7 64 bit mode. |
duke@435 | 1442 | stack_size = JavaThread::stack_size_at_create() == 0 |
duke@435 | 1443 | ? 2048*K : JavaThread::stack_size_at_create(); |
duke@435 | 1444 | |
duke@435 | 1445 | // There are rare cases when we may have already used more than |
duke@435 | 1446 | // the basic stack size allotment before this method is invoked. |
duke@435 | 1447 | // Attempt to allow for a normally sized java_stack. |
duke@435 | 1448 | size_t current_stack_offset = (size_t)(base - (address)&stack_size); |
duke@435 | 1449 | stack_size += ReservedSpace::page_align_size_down(current_stack_offset); |
duke@435 | 1450 | } else { |
duke@435 | 1451 | // 6269555: If we were not created by a Java launcher, i.e. if we are |
duke@435 | 1452 | // running embedded in a native application, treat the primordial thread |
duke@435 | 1453 | // as much like a native attached thread as possible. This means using |
duke@435 | 1454 | // the current stack size from thr_stksegment(), unless it is too large |
duke@435 | 1455 | // to reliably setup guard pages. A reasonable max size is 8MB. |
duke@435 | 1456 | size_t current_size = current_stack_size(); |
duke@435 | 1457 | // This should never happen, but just in case.... |
duke@435 | 1458 | if (current_size == 0) current_size = 2 * K * K; |
duke@435 | 1459 | stack_size = current_size > (8 * K * K) ? (8 * K * K) : current_size; |
duke@435 | 1460 | } |
duke@435 | 1461 | address bottom = (address)align_size_up((intptr_t)(base - stack_size), os::vm_page_size());; |
duke@435 | 1462 | stack_size = (size_t)(base - bottom); |
duke@435 | 1463 | |
duke@435 | 1464 | assert(stack_size > 0, "Stack size calculation problem"); |
duke@435 | 1465 | |
duke@435 | 1466 | if (stack_size > jt->stack_size()) { |
duke@435 | 1467 | NOT_PRODUCT( |
duke@435 | 1468 | struct rlimit limits; |
duke@435 | 1469 | getrlimit(RLIMIT_STACK, &limits); |
duke@435 | 1470 | size_t size = adjust_stack_size(base, (size_t)limits.rlim_cur); |
duke@435 | 1471 | assert(size >= jt->stack_size(), "Stack size problem in main thread"); |
duke@435 | 1472 | ) |
duke@435 | 1473 | tty->print_cr( |
duke@435 | 1474 | "Stack size of %d Kb exceeds current limit of %d Kb.\n" |
duke@435 | 1475 | "(Stack sizes are rounded up to a multiple of the system page size.)\n" |
duke@435 | 1476 | "See limit(1) to increase the stack size limit.", |
duke@435 | 1477 | stack_size / K, jt->stack_size() / K); |
duke@435 | 1478 | vm_exit(1); |
duke@435 | 1479 | } |
duke@435 | 1480 | assert(jt->stack_size() >= stack_size, |
duke@435 | 1481 | "Attempt to map more stack than was allocated"); |
duke@435 | 1482 | jt->set_stack_size(stack_size); |
duke@435 | 1483 | } |
duke@435 | 1484 | |
duke@435 | 1485 | // 5/22/01: Right now alternate signal stacks do not handle |
duke@435 | 1486 | // throwing stack overflow exceptions, see bug 4463178 |
duke@435 | 1487 | // Until a fix is found for this, T2 will NOT imply alternate signal |
duke@435 | 1488 | // stacks. |
duke@435 | 1489 | // If using T2 libthread threads, install an alternate signal stack. |
duke@435 | 1490 | // Because alternate stacks associate with LWPs on Solaris, |
duke@435 | 1491 | // see sigaltstack(2), if using UNBOUND threads, or if UseBoundThreads |
duke@435 | 1492 | // we prefer to explicitly stack bang. |
duke@435 | 1493 | // If not using T2 libthread, but using UseBoundThreads any threads |
duke@435 | 1494 | // (primordial thread, jni_attachCurrentThread) we do not create, |
duke@435 | 1495 | // probably are not bound, therefore they can not have an alternate |
duke@435 | 1496 | // signal stack. Since our stack banging code is generated and |
duke@435 | 1497 | // is shared across threads, all threads must be bound to allow |
duke@435 | 1498 | // using alternate signal stacks. The alternative is to interpose |
duke@435 | 1499 | // on _lwp_create to associate an alt sig stack with each LWP, |
duke@435 | 1500 | // and this could be a problem when the JVM is embedded. |
duke@435 | 1501 | // We would prefer to use alternate signal stacks with T2 |
duke@435 | 1502 | // Since there is currently no accurate way to detect T2 |
duke@435 | 1503 | // we do not. Assuming T2 when running T1 causes sig 11s or assertions |
duke@435 | 1504 | // on installing alternate signal stacks |
duke@435 | 1505 | |
duke@435 | 1506 | |
duke@435 | 1507 | // 05/09/03: removed alternate signal stack support for Solaris |
duke@435 | 1508 | // The alternate signal stack mechanism is no longer needed to |
duke@435 | 1509 | // handle stack overflow. This is now handled by allocating |
duke@435 | 1510 | // guard pages (red zone) and stackbanging. |
duke@435 | 1511 | // Initially the alternate signal stack mechanism was removed because |
duke@435 | 1512 | // it did not work with T1 llibthread. Alternate |
duke@435 | 1513 | // signal stacks MUST have all threads bound to lwps. Applications |
duke@435 | 1514 | // can create their own threads and attach them without their being |
duke@435 | 1515 | // bound under T1. This is frequently the case for the primordial thread. |
duke@435 | 1516 | // If we were ever to reenable this mechanism we would need to |
duke@435 | 1517 | // use the dynamic check for T2 libthread. |
duke@435 | 1518 | |
duke@435 | 1519 | os::Solaris::init_thread_fpu_state(); |
duke@435 | 1520 | } |
duke@435 | 1521 | |
duke@435 | 1522 | |
duke@435 | 1523 | |
duke@435 | 1524 | // Free Solaris resources related to the OSThread |
duke@435 | 1525 | void os::free_thread(OSThread* osthread) { |
duke@435 | 1526 | assert(osthread != NULL, "os::free_thread but osthread not set"); |
duke@435 | 1527 | |
duke@435 | 1528 | |
duke@435 | 1529 | // We are told to free resources of the argument thread, |
duke@435 | 1530 | // but we can only really operate on the current thread. |
duke@435 | 1531 | // The main thread must take the VMThread down synchronously |
duke@435 | 1532 | // before the main thread exits and frees up CodeHeap |
duke@435 | 1533 | guarantee((Thread::current()->osthread() == osthread |
duke@435 | 1534 | || (osthread == VMThread::vm_thread()->osthread())), "os::free_thread but not current thread"); |
duke@435 | 1535 | if (Thread::current()->osthread() == osthread) { |
duke@435 | 1536 | // Restore caller's signal mask |
duke@435 | 1537 | sigset_t sigmask = osthread->caller_sigmask(); |
duke@435 | 1538 | thr_sigsetmask(SIG_SETMASK, &sigmask, NULL); |
duke@435 | 1539 | } |
duke@435 | 1540 | delete osthread; |
duke@435 | 1541 | } |
duke@435 | 1542 | |
duke@435 | 1543 | void os::pd_start_thread(Thread* thread) { |
duke@435 | 1544 | int status = thr_continue(thread->osthread()->thread_id()); |
duke@435 | 1545 | assert_status(status == 0, status, "thr_continue failed"); |
duke@435 | 1546 | } |
duke@435 | 1547 | |
duke@435 | 1548 | |
duke@435 | 1549 | intx os::current_thread_id() { |
duke@435 | 1550 | return (intx)thr_self(); |
duke@435 | 1551 | } |
duke@435 | 1552 | |
duke@435 | 1553 | static pid_t _initial_pid = 0; |
duke@435 | 1554 | |
duke@435 | 1555 | int os::current_process_id() { |
duke@435 | 1556 | return (int)(_initial_pid ? _initial_pid : getpid()); |
duke@435 | 1557 | } |
duke@435 | 1558 | |
duke@435 | 1559 | int os::allocate_thread_local_storage() { |
duke@435 | 1560 | // %%% in Win32 this allocates a memory segment pointed to by a |
duke@435 | 1561 | // register. Dan Stein can implement a similar feature in |
duke@435 | 1562 | // Solaris. Alternatively, the VM can do the same thing |
duke@435 | 1563 | // explicitly: malloc some storage and keep the pointer in a |
duke@435 | 1564 | // register (which is part of the thread's context) (or keep it |
duke@435 | 1565 | // in TLS). |
duke@435 | 1566 | // %%% In current versions of Solaris, thr_self and TSD can |
duke@435 | 1567 | // be accessed via short sequences of displaced indirections. |
duke@435 | 1568 | // The value of thr_self is available as %g7(36). |
duke@435 | 1569 | // The value of thr_getspecific(k) is stored in %g7(12)(4)(k*4-4), |
duke@435 | 1570 | // assuming that the current thread already has a value bound to k. |
duke@435 | 1571 | // It may be worth experimenting with such access patterns, |
duke@435 | 1572 | // and later having the parameters formally exported from a Solaris |
duke@435 | 1573 | // interface. I think, however, that it will be faster to |
duke@435 | 1574 | // maintain the invariant that %g2 always contains the |
duke@435 | 1575 | // JavaThread in Java code, and have stubs simply |
duke@435 | 1576 | // treat %g2 as a caller-save register, preserving it in a %lN. |
duke@435 | 1577 | thread_key_t tk; |
duke@435 | 1578 | if (thr_keycreate( &tk, NULL ) ) |
duke@435 | 1579 | fatal1("os::allocate_thread_local_storage: thr_keycreate failed (%s)", strerror(errno)); |
duke@435 | 1580 | return int(tk); |
duke@435 | 1581 | } |
duke@435 | 1582 | |
duke@435 | 1583 | void os::free_thread_local_storage(int index) { |
duke@435 | 1584 | // %%% don't think we need anything here |
duke@435 | 1585 | // if ( pthread_key_delete((pthread_key_t) tk) ) |
duke@435 | 1586 | // fatal("os::free_thread_local_storage: pthread_key_delete failed"); |
duke@435 | 1587 | } |
duke@435 | 1588 | |
duke@435 | 1589 | #define SMALLINT 32 // libthread allocate for tsd_common is a version specific |
duke@435 | 1590 | // small number - point is NO swap space available |
duke@435 | 1591 | void os::thread_local_storage_at_put(int index, void* value) { |
duke@435 | 1592 | // %%% this is used only in threadLocalStorage.cpp |
duke@435 | 1593 | if (thr_setspecific((thread_key_t)index, value)) { |
duke@435 | 1594 | if (errno == ENOMEM) { |
duke@435 | 1595 | vm_exit_out_of_memory(SMALLINT, "thr_setspecific: out of swap space"); |
duke@435 | 1596 | } else { |
duke@435 | 1597 | fatal1("os::thread_local_storage_at_put: thr_setspecific failed (%s)", strerror(errno)); |
duke@435 | 1598 | } |
duke@435 | 1599 | } else { |
duke@435 | 1600 | ThreadLocalStorage::set_thread_in_slot ((Thread *) value) ; |
duke@435 | 1601 | } |
duke@435 | 1602 | } |
duke@435 | 1603 | |
duke@435 | 1604 | // This function could be called before TLS is initialized, for example, when |
duke@435 | 1605 | // VM receives an async signal or when VM causes a fatal error during |
duke@435 | 1606 | // initialization. Return NULL if thr_getspecific() fails. |
duke@435 | 1607 | void* os::thread_local_storage_at(int index) { |
duke@435 | 1608 | // %%% this is used only in threadLocalStorage.cpp |
duke@435 | 1609 | void* r = NULL; |
duke@435 | 1610 | return thr_getspecific((thread_key_t)index, &r) != 0 ? NULL : r; |
duke@435 | 1611 | } |
duke@435 | 1612 | |
duke@435 | 1613 | |
duke@435 | 1614 | const int NANOSECS_PER_MILLISECS = 1000000; |
duke@435 | 1615 | // gethrtime can move backwards if read from one cpu and then a different cpu |
duke@435 | 1616 | // getTimeNanos is guaranteed to not move backward on Solaris |
duke@435 | 1617 | // local spinloop created as faster for a CAS on an int than |
duke@435 | 1618 | // a CAS on a 64bit jlong. Also Atomic::cmpxchg for jlong is not |
duke@435 | 1619 | // supported on sparc v8 or pre supports_cx8 intel boxes. |
duke@435 | 1620 | // oldgetTimeNanos for systems which do not support CAS on 64bit jlong |
duke@435 | 1621 | // i.e. sparc v8 and pre supports_cx8 (i486) intel boxes |
duke@435 | 1622 | inline hrtime_t oldgetTimeNanos() { |
duke@435 | 1623 | int gotlock = LOCK_INVALID; |
duke@435 | 1624 | hrtime_t newtime = gethrtime(); |
duke@435 | 1625 | |
duke@435 | 1626 | for (;;) { |
duke@435 | 1627 | // grab lock for max_hrtime |
duke@435 | 1628 | int curlock = max_hrtime_lock; |
duke@435 | 1629 | if (curlock & LOCK_BUSY) continue; |
duke@435 | 1630 | if (gotlock = Atomic::cmpxchg(LOCK_BUSY, &max_hrtime_lock, LOCK_FREE) != LOCK_FREE) continue; |
duke@435 | 1631 | if (newtime > max_hrtime) { |
duke@435 | 1632 | max_hrtime = newtime; |
duke@435 | 1633 | } else { |
duke@435 | 1634 | newtime = max_hrtime; |
duke@435 | 1635 | } |
duke@435 | 1636 | // release lock |
duke@435 | 1637 | max_hrtime_lock = LOCK_FREE; |
duke@435 | 1638 | return newtime; |
duke@435 | 1639 | } |
duke@435 | 1640 | } |
duke@435 | 1641 | // gethrtime can move backwards if read from one cpu and then a different cpu |
duke@435 | 1642 | // getTimeNanos is guaranteed to not move backward on Solaris |
duke@435 | 1643 | inline hrtime_t getTimeNanos() { |
duke@435 | 1644 | if (VM_Version::supports_cx8()) { |
xlu@934 | 1645 | const hrtime_t now = gethrtime(); |
xlu@934 | 1646 | const hrtime_t prev = max_hrtime; |
xlu@934 | 1647 | if (now <= prev) return prev; // same or retrograde time; |
xlu@934 | 1648 | const hrtime_t obsv = Atomic::cmpxchg(now, (volatile jlong*)&max_hrtime, prev); |
xlu@934 | 1649 | assert(obsv >= prev, "invariant"); // Monotonicity |
xlu@934 | 1650 | // If the CAS succeeded then we're done and return "now". |
xlu@934 | 1651 | // If the CAS failed and the observed value "obs" is >= now then |
xlu@934 | 1652 | // we should return "obs". If the CAS failed and now > obs > prv then |
xlu@934 | 1653 | // some other thread raced this thread and installed a new value, in which case |
xlu@934 | 1654 | // we could either (a) retry the entire operation, (b) retry trying to install now |
xlu@934 | 1655 | // or (c) just return obs. We use (c). No loop is required although in some cases |
xlu@934 | 1656 | // we might discard a higher "now" value in deference to a slightly lower but freshly |
xlu@934 | 1657 | // installed obs value. That's entirely benign -- it admits no new orderings compared |
xlu@934 | 1658 | // to (a) or (b) -- and greatly reduces coherence traffic. |
xlu@934 | 1659 | // We might also condition (c) on the magnitude of the delta between obs and now. |
xlu@934 | 1660 | // Avoiding excessive CAS operations to hot RW locations is critical. |
xlu@934 | 1661 | // See http://blogs.sun.com/dave/entry/cas_and_cache_trivia_invalidate |
xlu@934 | 1662 | return (prev == obsv) ? now : obsv ; |
duke@435 | 1663 | } else { |
duke@435 | 1664 | return oldgetTimeNanos(); |
duke@435 | 1665 | } |
duke@435 | 1666 | } |
duke@435 | 1667 | |
duke@435 | 1668 | // Time since start-up in seconds to a fine granularity. |
duke@435 | 1669 | // Used by VMSelfDestructTimer and the MemProfiler. |
duke@435 | 1670 | double os::elapsedTime() { |
duke@435 | 1671 | return (double)(getTimeNanos() - first_hrtime) / (double)hrtime_hz; |
duke@435 | 1672 | } |
duke@435 | 1673 | |
duke@435 | 1674 | jlong os::elapsed_counter() { |
duke@435 | 1675 | return (jlong)(getTimeNanos() - first_hrtime); |
duke@435 | 1676 | } |
duke@435 | 1677 | |
duke@435 | 1678 | jlong os::elapsed_frequency() { |
duke@435 | 1679 | return hrtime_hz; |
duke@435 | 1680 | } |
duke@435 | 1681 | |
duke@435 | 1682 | // Return the real, user, and system times in seconds from an |
duke@435 | 1683 | // arbitrary fixed point in the past. |
duke@435 | 1684 | bool os::getTimesSecs(double* process_real_time, |
duke@435 | 1685 | double* process_user_time, |
duke@435 | 1686 | double* process_system_time) { |
duke@435 | 1687 | struct tms ticks; |
duke@435 | 1688 | clock_t real_ticks = times(&ticks); |
duke@435 | 1689 | |
duke@435 | 1690 | if (real_ticks == (clock_t) (-1)) { |
duke@435 | 1691 | return false; |
duke@435 | 1692 | } else { |
duke@435 | 1693 | double ticks_per_second = (double) clock_tics_per_sec; |
duke@435 | 1694 | *process_user_time = ((double) ticks.tms_utime) / ticks_per_second; |
duke@435 | 1695 | *process_system_time = ((double) ticks.tms_stime) / ticks_per_second; |
duke@435 | 1696 | // For consistency return the real time from getTimeNanos() |
duke@435 | 1697 | // converted to seconds. |
duke@435 | 1698 | *process_real_time = ((double) getTimeNanos()) / ((double) NANOUNITS); |
duke@435 | 1699 | |
duke@435 | 1700 | return true; |
duke@435 | 1701 | } |
duke@435 | 1702 | } |
duke@435 | 1703 | |
ysr@777 | 1704 | bool os::supports_vtime() { return true; } |
ysr@777 | 1705 | |
ysr@777 | 1706 | bool os::enable_vtime() { |
ysr@777 | 1707 | int fd = open("/proc/self/ctl", O_WRONLY); |
ysr@777 | 1708 | if (fd == -1) |
ysr@777 | 1709 | return false; |
ysr@777 | 1710 | |
ysr@777 | 1711 | long cmd[] = { PCSET, PR_MSACCT }; |
ysr@777 | 1712 | int res = write(fd, cmd, sizeof(long) * 2); |
ysr@777 | 1713 | close(fd); |
ysr@777 | 1714 | if (res != sizeof(long) * 2) |
ysr@777 | 1715 | return false; |
ysr@777 | 1716 | |
ysr@777 | 1717 | return true; |
ysr@777 | 1718 | } |
ysr@777 | 1719 | |
ysr@777 | 1720 | bool os::vtime_enabled() { |
ysr@777 | 1721 | int fd = open("/proc/self/status", O_RDONLY); |
ysr@777 | 1722 | if (fd == -1) |
ysr@777 | 1723 | return false; |
ysr@777 | 1724 | |
ysr@777 | 1725 | pstatus_t status; |
ysr@777 | 1726 | int res = read(fd, (void*) &status, sizeof(pstatus_t)); |
ysr@777 | 1727 | close(fd); |
ysr@777 | 1728 | if (res != sizeof(pstatus_t)) |
ysr@777 | 1729 | return false; |
ysr@777 | 1730 | |
ysr@777 | 1731 | return status.pr_flags & PR_MSACCT; |
ysr@777 | 1732 | } |
ysr@777 | 1733 | |
ysr@777 | 1734 | double os::elapsedVTime() { |
ysr@777 | 1735 | return (double)gethrvtime() / (double)hrtime_hz; |
ysr@777 | 1736 | } |
ysr@777 | 1737 | |
duke@435 | 1738 | // Used internally for comparisons only |
duke@435 | 1739 | // getTimeMillis guaranteed to not move backwards on Solaris |
duke@435 | 1740 | jlong getTimeMillis() { |
duke@435 | 1741 | jlong nanotime = getTimeNanos(); |
duke@435 | 1742 | return (jlong)(nanotime / NANOSECS_PER_MILLISECS); |
duke@435 | 1743 | } |
duke@435 | 1744 | |
sbohne@496 | 1745 | // Must return millis since Jan 1 1970 for JVM_CurrentTimeMillis |
sbohne@496 | 1746 | jlong os::javaTimeMillis() { |
duke@435 | 1747 | timeval t; |
duke@435 | 1748 | if (gettimeofday( &t, NULL) == -1) |
sbohne@496 | 1749 | fatal1("os::javaTimeMillis: gettimeofday (%s)", strerror(errno)); |
duke@435 | 1750 | return jlong(t.tv_sec) * 1000 + jlong(t.tv_usec) / 1000; |
duke@435 | 1751 | } |
duke@435 | 1752 | |
duke@435 | 1753 | jlong os::javaTimeNanos() { |
duke@435 | 1754 | return (jlong)getTimeNanos(); |
duke@435 | 1755 | } |
duke@435 | 1756 | |
duke@435 | 1757 | void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) { |
duke@435 | 1758 | info_ptr->max_value = ALL_64_BITS; // gethrtime() uses all 64 bits |
duke@435 | 1759 | info_ptr->may_skip_backward = false; // not subject to resetting or drifting |
duke@435 | 1760 | info_ptr->may_skip_forward = false; // not subject to resetting or drifting |
duke@435 | 1761 | info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time |
duke@435 | 1762 | } |
duke@435 | 1763 | |
duke@435 | 1764 | char * os::local_time_string(char *buf, size_t buflen) { |
duke@435 | 1765 | struct tm t; |
duke@435 | 1766 | time_t long_time; |
duke@435 | 1767 | time(&long_time); |
duke@435 | 1768 | localtime_r(&long_time, &t); |
duke@435 | 1769 | jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d", |
duke@435 | 1770 | t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, |
duke@435 | 1771 | t.tm_hour, t.tm_min, t.tm_sec); |
duke@435 | 1772 | return buf; |
duke@435 | 1773 | } |
duke@435 | 1774 | |
duke@435 | 1775 | // Note: os::shutdown() might be called very early during initialization, or |
duke@435 | 1776 | // called from signal handler. Before adding something to os::shutdown(), make |
duke@435 | 1777 | // sure it is async-safe and can handle partially initialized VM. |
duke@435 | 1778 | void os::shutdown() { |
duke@435 | 1779 | |
duke@435 | 1780 | // allow PerfMemory to attempt cleanup of any persistent resources |
duke@435 | 1781 | perfMemory_exit(); |
duke@435 | 1782 | |
duke@435 | 1783 | // needs to remove object in file system |
duke@435 | 1784 | AttachListener::abort(); |
duke@435 | 1785 | |
duke@435 | 1786 | // flush buffered output, finish log files |
duke@435 | 1787 | ostream_abort(); |
duke@435 | 1788 | |
duke@435 | 1789 | // Check for abort hook |
duke@435 | 1790 | abort_hook_t abort_hook = Arguments::abort_hook(); |
duke@435 | 1791 | if (abort_hook != NULL) { |
duke@435 | 1792 | abort_hook(); |
duke@435 | 1793 | } |
duke@435 | 1794 | } |
duke@435 | 1795 | |
duke@435 | 1796 | // Note: os::abort() might be called very early during initialization, or |
duke@435 | 1797 | // called from signal handler. Before adding something to os::abort(), make |
duke@435 | 1798 | // sure it is async-safe and can handle partially initialized VM. |
duke@435 | 1799 | void os::abort(bool dump_core) { |
duke@435 | 1800 | os::shutdown(); |
duke@435 | 1801 | if (dump_core) { |
duke@435 | 1802 | #ifndef PRODUCT |
duke@435 | 1803 | fdStream out(defaultStream::output_fd()); |
duke@435 | 1804 | out.print_raw("Current thread is "); |
duke@435 | 1805 | char buf[16]; |
duke@435 | 1806 | jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id()); |
duke@435 | 1807 | out.print_raw_cr(buf); |
duke@435 | 1808 | out.print_raw_cr("Dumping core ..."); |
duke@435 | 1809 | #endif |
duke@435 | 1810 | ::abort(); // dump core (for debugging) |
duke@435 | 1811 | } |
duke@435 | 1812 | |
duke@435 | 1813 | ::exit(1); |
duke@435 | 1814 | } |
duke@435 | 1815 | |
duke@435 | 1816 | // Die immediately, no exit hook, no abort hook, no cleanup. |
duke@435 | 1817 | void os::die() { |
duke@435 | 1818 | _exit(-1); |
duke@435 | 1819 | } |
duke@435 | 1820 | |
duke@435 | 1821 | // unused |
duke@435 | 1822 | void os::set_error_file(const char *logfile) {} |
duke@435 | 1823 | |
duke@435 | 1824 | // DLL functions |
duke@435 | 1825 | |
duke@435 | 1826 | const char* os::dll_file_extension() { return ".so"; } |
duke@435 | 1827 | |
duke@435 | 1828 | const char* os::get_temp_directory() { return "/tmp/"; } |
duke@435 | 1829 | |
kamg@677 | 1830 | void os::dll_build_name( |
kamg@677 | 1831 | char* buffer, size_t buflen, const char* pname, const char* fname) { |
kamg@677 | 1832 | // copied from libhpi |
kamg@677 | 1833 | const size_t pnamelen = pname ? strlen(pname) : 0; |
kamg@677 | 1834 | |
kamg@677 | 1835 | /* Quietly truncate on buffer overflow. Should be an error. */ |
kamg@677 | 1836 | if (pnamelen + strlen(fname) + 10 > (size_t) buflen) { |
kamg@677 | 1837 | *buffer = '\0'; |
kamg@677 | 1838 | return; |
kamg@677 | 1839 | } |
kamg@677 | 1840 | |
kamg@677 | 1841 | if (pnamelen == 0) { |
kamg@677 | 1842 | sprintf(buffer, "lib%s.so", fname); |
kamg@677 | 1843 | } else { |
kamg@677 | 1844 | sprintf(buffer, "%s/lib%s.so", pname, fname); |
kamg@677 | 1845 | } |
kamg@677 | 1846 | } |
kamg@677 | 1847 | |
duke@435 | 1848 | const char* os::get_current_directory(char *buf, int buflen) { |
duke@435 | 1849 | return getcwd(buf, buflen); |
duke@435 | 1850 | } |
duke@435 | 1851 | |
duke@435 | 1852 | // check if addr is inside libjvm[_g].so |
duke@435 | 1853 | bool os::address_is_in_vm(address addr) { |
duke@435 | 1854 | static address libjvm_base_addr; |
duke@435 | 1855 | Dl_info dlinfo; |
duke@435 | 1856 | |
duke@435 | 1857 | if (libjvm_base_addr == NULL) { |
duke@435 | 1858 | dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo); |
duke@435 | 1859 | libjvm_base_addr = (address)dlinfo.dli_fbase; |
duke@435 | 1860 | assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm"); |
duke@435 | 1861 | } |
duke@435 | 1862 | |
duke@435 | 1863 | if (dladdr((void *)addr, &dlinfo)) { |
duke@435 | 1864 | if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true; |
duke@435 | 1865 | } |
duke@435 | 1866 | |
duke@435 | 1867 | return false; |
duke@435 | 1868 | } |
duke@435 | 1869 | |
duke@435 | 1870 | typedef int (*dladdr1_func_type) (void *, Dl_info *, void **, int); |
duke@435 | 1871 | static dladdr1_func_type dladdr1_func = NULL; |
duke@435 | 1872 | |
duke@435 | 1873 | bool os::dll_address_to_function_name(address addr, char *buf, |
duke@435 | 1874 | int buflen, int * offset) { |
duke@435 | 1875 | Dl_info dlinfo; |
duke@435 | 1876 | |
duke@435 | 1877 | // dladdr1_func was initialized in os::init() |
duke@435 | 1878 | if (dladdr1_func){ |
duke@435 | 1879 | // yes, we have dladdr1 |
duke@435 | 1880 | |
duke@435 | 1881 | // Support for dladdr1 is checked at runtime; it may be |
duke@435 | 1882 | // available even if the vm is built on a machine that does |
duke@435 | 1883 | // not have dladdr1 support. Make sure there is a value for |
duke@435 | 1884 | // RTLD_DL_SYMENT. |
duke@435 | 1885 | #ifndef RTLD_DL_SYMENT |
duke@435 | 1886 | #define RTLD_DL_SYMENT 1 |
duke@435 | 1887 | #endif |
duke@435 | 1888 | Sym * info; |
duke@435 | 1889 | if (dladdr1_func((void *)addr, &dlinfo, (void **)&info, |
duke@435 | 1890 | RTLD_DL_SYMENT)) { |
duke@435 | 1891 | if (buf) jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname); |
duke@435 | 1892 | if (offset) *offset = addr - (address)dlinfo.dli_saddr; |
duke@435 | 1893 | |
duke@435 | 1894 | // check if the returned symbol really covers addr |
duke@435 | 1895 | return ((char *)dlinfo.dli_saddr + info->st_size > (char *)addr); |
duke@435 | 1896 | } else { |
duke@435 | 1897 | if (buf) buf[0] = '\0'; |
duke@435 | 1898 | if (offset) *offset = -1; |
duke@435 | 1899 | return false; |
duke@435 | 1900 | } |
duke@435 | 1901 | } else { |
duke@435 | 1902 | // no, only dladdr is available |
duke@435 | 1903 | if(dladdr((void *)addr, &dlinfo)) { |
duke@435 | 1904 | if (buf) jio_snprintf(buf, buflen, dlinfo.dli_sname); |
duke@435 | 1905 | if (offset) *offset = addr - (address)dlinfo.dli_saddr; |
duke@435 | 1906 | return true; |
duke@435 | 1907 | } else { |
duke@435 | 1908 | if (buf) buf[0] = '\0'; |
duke@435 | 1909 | if (offset) *offset = -1; |
duke@435 | 1910 | return false; |
duke@435 | 1911 | } |
duke@435 | 1912 | } |
duke@435 | 1913 | } |
duke@435 | 1914 | |
duke@435 | 1915 | bool os::dll_address_to_library_name(address addr, char* buf, |
duke@435 | 1916 | int buflen, int* offset) { |
duke@435 | 1917 | Dl_info dlinfo; |
duke@435 | 1918 | |
duke@435 | 1919 | if (dladdr((void*)addr, &dlinfo)){ |
duke@435 | 1920 | if (buf) jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname); |
duke@435 | 1921 | if (offset) *offset = addr - (address)dlinfo.dli_fbase; |
duke@435 | 1922 | return true; |
duke@435 | 1923 | } else { |
duke@435 | 1924 | if (buf) buf[0] = '\0'; |
duke@435 | 1925 | if (offset) *offset = -1; |
duke@435 | 1926 | return false; |
duke@435 | 1927 | } |
duke@435 | 1928 | } |
duke@435 | 1929 | |
duke@435 | 1930 | // Prints the names and full paths of all opened dynamic libraries |
duke@435 | 1931 | // for current process |
duke@435 | 1932 | void os::print_dll_info(outputStream * st) { |
duke@435 | 1933 | Dl_info dli; |
duke@435 | 1934 | void *handle; |
duke@435 | 1935 | Link_map *map; |
duke@435 | 1936 | Link_map *p; |
duke@435 | 1937 | |
duke@435 | 1938 | st->print_cr("Dynamic libraries:"); st->flush(); |
duke@435 | 1939 | |
duke@435 | 1940 | if (!dladdr(CAST_FROM_FN_PTR(void *, os::print_dll_info), &dli)) { |
duke@435 | 1941 | st->print_cr("Error: Cannot print dynamic libraries."); |
duke@435 | 1942 | return; |
duke@435 | 1943 | } |
duke@435 | 1944 | handle = dlopen(dli.dli_fname, RTLD_LAZY); |
duke@435 | 1945 | if (handle == NULL) { |
duke@435 | 1946 | st->print_cr("Error: Cannot print dynamic libraries."); |
duke@435 | 1947 | return; |
duke@435 | 1948 | } |
duke@435 | 1949 | dlinfo(handle, RTLD_DI_LINKMAP, &map); |
duke@435 | 1950 | if (map == NULL) { |
duke@435 | 1951 | st->print_cr("Error: Cannot print dynamic libraries."); |
duke@435 | 1952 | return; |
duke@435 | 1953 | } |
duke@435 | 1954 | |
duke@435 | 1955 | while (map->l_prev != NULL) |
duke@435 | 1956 | map = map->l_prev; |
duke@435 | 1957 | |
duke@435 | 1958 | while (map != NULL) { |
duke@435 | 1959 | st->print_cr(PTR_FORMAT " \t%s", map->l_addr, map->l_name); |
duke@435 | 1960 | map = map->l_next; |
duke@435 | 1961 | } |
duke@435 | 1962 | |
duke@435 | 1963 | dlclose(handle); |
duke@435 | 1964 | } |
duke@435 | 1965 | |
duke@435 | 1966 | // Loads .dll/.so and |
duke@435 | 1967 | // in case of error it checks if .dll/.so was built for the |
duke@435 | 1968 | // same architecture as Hotspot is running on |
duke@435 | 1969 | |
duke@435 | 1970 | void * os::dll_load(const char *filename, char *ebuf, int ebuflen) |
duke@435 | 1971 | { |
duke@435 | 1972 | void * result= ::dlopen(filename, RTLD_LAZY); |
duke@435 | 1973 | if (result != NULL) { |
duke@435 | 1974 | // Successful loading |
duke@435 | 1975 | return result; |
duke@435 | 1976 | } |
duke@435 | 1977 | |
duke@435 | 1978 | Elf32_Ehdr elf_head; |
duke@435 | 1979 | |
duke@435 | 1980 | // Read system error message into ebuf |
duke@435 | 1981 | // It may or may not be overwritten below |
duke@435 | 1982 | ::strncpy(ebuf, ::dlerror(), ebuflen-1); |
duke@435 | 1983 | ebuf[ebuflen-1]='\0'; |
duke@435 | 1984 | int diag_msg_max_length=ebuflen-strlen(ebuf); |
duke@435 | 1985 | char* diag_msg_buf=ebuf+strlen(ebuf); |
duke@435 | 1986 | |
duke@435 | 1987 | if (diag_msg_max_length==0) { |
duke@435 | 1988 | // No more space in ebuf for additional diagnostics message |
duke@435 | 1989 | return NULL; |
duke@435 | 1990 | } |
duke@435 | 1991 | |
duke@435 | 1992 | |
duke@435 | 1993 | int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK); |
duke@435 | 1994 | |
duke@435 | 1995 | if (file_descriptor < 0) { |
duke@435 | 1996 | // Can't open library, report dlerror() message |
duke@435 | 1997 | return NULL; |
duke@435 | 1998 | } |
duke@435 | 1999 | |
duke@435 | 2000 | bool failed_to_read_elf_head= |
duke@435 | 2001 | (sizeof(elf_head)!= |
duke@435 | 2002 | (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ; |
duke@435 | 2003 | |
duke@435 | 2004 | ::close(file_descriptor); |
duke@435 | 2005 | if (failed_to_read_elf_head) { |
duke@435 | 2006 | // file i/o error - report dlerror() msg |
duke@435 | 2007 | return NULL; |
duke@435 | 2008 | } |
duke@435 | 2009 | |
duke@435 | 2010 | typedef struct { |
duke@435 | 2011 | Elf32_Half code; // Actual value as defined in elf.h |
duke@435 | 2012 | Elf32_Half compat_class; // Compatibility of archs at VM's sense |
duke@435 | 2013 | char elf_class; // 32 or 64 bit |
duke@435 | 2014 | char endianess; // MSB or LSB |
duke@435 | 2015 | char* name; // String representation |
duke@435 | 2016 | } arch_t; |
duke@435 | 2017 | |
duke@435 | 2018 | static const arch_t arch_array[]={ |
duke@435 | 2019 | {EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, |
duke@435 | 2020 | {EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"}, |
duke@435 | 2021 | {EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"}, |
duke@435 | 2022 | {EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"}, |
duke@435 | 2023 | {EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, |
duke@435 | 2024 | {EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"}, |
duke@435 | 2025 | {EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"}, |
duke@435 | 2026 | {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"}, |
duke@435 | 2027 | {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"} |
duke@435 | 2028 | }; |
duke@435 | 2029 | |
duke@435 | 2030 | #if (defined IA32) |
duke@435 | 2031 | static Elf32_Half running_arch_code=EM_386; |
duke@435 | 2032 | #elif (defined AMD64) |
duke@435 | 2033 | static Elf32_Half running_arch_code=EM_X86_64; |
duke@435 | 2034 | #elif (defined IA64) |
duke@435 | 2035 | static Elf32_Half running_arch_code=EM_IA_64; |
duke@435 | 2036 | #elif (defined __sparc) && (defined _LP64) |
duke@435 | 2037 | static Elf32_Half running_arch_code=EM_SPARCV9; |
duke@435 | 2038 | #elif (defined __sparc) && (!defined _LP64) |
duke@435 | 2039 | static Elf32_Half running_arch_code=EM_SPARC; |
duke@435 | 2040 | #elif (defined __powerpc64__) |
duke@435 | 2041 | static Elf32_Half running_arch_code=EM_PPC64; |
duke@435 | 2042 | #elif (defined __powerpc__) |
duke@435 | 2043 | static Elf32_Half running_arch_code=EM_PPC; |
duke@435 | 2044 | #else |
duke@435 | 2045 | #error Method os::dll_load requires that one of following is defined:\ |
duke@435 | 2046 | IA32, AMD64, IA64, __sparc, __powerpc__ |
duke@435 | 2047 | #endif |
duke@435 | 2048 | |
duke@435 | 2049 | // Identify compatability class for VM's architecture and library's architecture |
duke@435 | 2050 | // Obtain string descriptions for architectures |
duke@435 | 2051 | |
duke@435 | 2052 | arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL}; |
duke@435 | 2053 | int running_arch_index=-1; |
duke@435 | 2054 | |
duke@435 | 2055 | for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) { |
duke@435 | 2056 | if (running_arch_code == arch_array[i].code) { |
duke@435 | 2057 | running_arch_index = i; |
duke@435 | 2058 | } |
duke@435 | 2059 | if (lib_arch.code == arch_array[i].code) { |
duke@435 | 2060 | lib_arch.compat_class = arch_array[i].compat_class; |
duke@435 | 2061 | lib_arch.name = arch_array[i].name; |
duke@435 | 2062 | } |
duke@435 | 2063 | } |
duke@435 | 2064 | |
duke@435 | 2065 | assert(running_arch_index != -1, |
duke@435 | 2066 | "Didn't find running architecture code (running_arch_code) in arch_array"); |
duke@435 | 2067 | if (running_arch_index == -1) { |
duke@435 | 2068 | // Even though running architecture detection failed |
duke@435 | 2069 | // we may still continue with reporting dlerror() message |
duke@435 | 2070 | return NULL; |
duke@435 | 2071 | } |
duke@435 | 2072 | |
duke@435 | 2073 | if (lib_arch.endianess != arch_array[running_arch_index].endianess) { |
duke@435 | 2074 | ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)"); |
duke@435 | 2075 | return NULL; |
duke@435 | 2076 | } |
duke@435 | 2077 | |
duke@435 | 2078 | if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) { |
duke@435 | 2079 | ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)"); |
duke@435 | 2080 | return NULL; |
duke@435 | 2081 | } |
duke@435 | 2082 | |
duke@435 | 2083 | if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) { |
duke@435 | 2084 | if ( lib_arch.name!=NULL ) { |
duke@435 | 2085 | ::snprintf(diag_msg_buf, diag_msg_max_length-1, |
duke@435 | 2086 | " (Possible cause: can't load %s-bit .so on a %s-bit platform)", |
duke@435 | 2087 | lib_arch.name, arch_array[running_arch_index].name); |
duke@435 | 2088 | } else { |
duke@435 | 2089 | ::snprintf(diag_msg_buf, diag_msg_max_length-1, |
duke@435 | 2090 | " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)", |
duke@435 | 2091 | lib_arch.code, |
duke@435 | 2092 | arch_array[running_arch_index].name); |
duke@435 | 2093 | } |
duke@435 | 2094 | } |
duke@435 | 2095 | |
duke@435 | 2096 | return NULL; |
duke@435 | 2097 | } |
duke@435 | 2098 | |
kamg@677 | 2099 | void* os::dll_lookup(void* handle, const char* name) { |
kamg@677 | 2100 | return dlsym(handle, name); |
kamg@677 | 2101 | } |
duke@435 | 2102 | |
duke@435 | 2103 | |
duke@435 | 2104 | bool _print_ascii_file(const char* filename, outputStream* st) { |
duke@435 | 2105 | int fd = open(filename, O_RDONLY); |
duke@435 | 2106 | if (fd == -1) { |
duke@435 | 2107 | return false; |
duke@435 | 2108 | } |
duke@435 | 2109 | |
duke@435 | 2110 | char buf[32]; |
duke@435 | 2111 | int bytes; |
duke@435 | 2112 | while ((bytes = read(fd, buf, sizeof(buf))) > 0) { |
duke@435 | 2113 | st->print_raw(buf, bytes); |
duke@435 | 2114 | } |
duke@435 | 2115 | |
duke@435 | 2116 | close(fd); |
duke@435 | 2117 | |
duke@435 | 2118 | return true; |
duke@435 | 2119 | } |
duke@435 | 2120 | |
duke@435 | 2121 | void os::print_os_info(outputStream* st) { |
duke@435 | 2122 | st->print("OS:"); |
duke@435 | 2123 | |
duke@435 | 2124 | if (!_print_ascii_file("/etc/release", st)) { |
duke@435 | 2125 | st->print("Solaris"); |
duke@435 | 2126 | } |
duke@435 | 2127 | st->cr(); |
duke@435 | 2128 | |
duke@435 | 2129 | // kernel |
duke@435 | 2130 | st->print("uname:"); |
duke@435 | 2131 | struct utsname name; |
duke@435 | 2132 | uname(&name); |
duke@435 | 2133 | st->print(name.sysname); st->print(" "); |
duke@435 | 2134 | st->print(name.release); st->print(" "); |
duke@435 | 2135 | st->print(name.version); st->print(" "); |
duke@435 | 2136 | st->print(name.machine); |
duke@435 | 2137 | |
duke@435 | 2138 | // libthread |
duke@435 | 2139 | if (os::Solaris::T2_libthread()) st->print(" (T2 libthread)"); |
duke@435 | 2140 | else st->print(" (T1 libthread)"); |
duke@435 | 2141 | st->cr(); |
duke@435 | 2142 | |
duke@435 | 2143 | // rlimit |
duke@435 | 2144 | st->print("rlimit:"); |
duke@435 | 2145 | struct rlimit rlim; |
duke@435 | 2146 | |
duke@435 | 2147 | st->print(" STACK "); |
duke@435 | 2148 | getrlimit(RLIMIT_STACK, &rlim); |
duke@435 | 2149 | if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); |
duke@435 | 2150 | else st->print("%uk", rlim.rlim_cur >> 10); |
duke@435 | 2151 | |
duke@435 | 2152 | st->print(", CORE "); |
duke@435 | 2153 | getrlimit(RLIMIT_CORE, &rlim); |
duke@435 | 2154 | if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); |
duke@435 | 2155 | else st->print("%uk", rlim.rlim_cur >> 10); |
duke@435 | 2156 | |
duke@435 | 2157 | st->print(", NOFILE "); |
duke@435 | 2158 | getrlimit(RLIMIT_NOFILE, &rlim); |
duke@435 | 2159 | if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); |
duke@435 | 2160 | else st->print("%d", rlim.rlim_cur); |
duke@435 | 2161 | |
duke@435 | 2162 | st->print(", AS "); |
duke@435 | 2163 | getrlimit(RLIMIT_AS, &rlim); |
duke@435 | 2164 | if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity"); |
duke@435 | 2165 | else st->print("%uk", rlim.rlim_cur >> 10); |
duke@435 | 2166 | st->cr(); |
duke@435 | 2167 | |
duke@435 | 2168 | // load average |
duke@435 | 2169 | st->print("load average:"); |
duke@435 | 2170 | double loadavg[3]; |
duke@435 | 2171 | os::loadavg(loadavg, 3); |
duke@435 | 2172 | st->print("%0.02f %0.02f %0.02f", loadavg[0], loadavg[1], loadavg[2]); |
duke@435 | 2173 | st->cr(); |
duke@435 | 2174 | } |
duke@435 | 2175 | |
duke@435 | 2176 | |
duke@435 | 2177 | static bool check_addr0(outputStream* st) { |
duke@435 | 2178 | jboolean status = false; |
duke@435 | 2179 | int fd = open("/proc/self/map",O_RDONLY); |
duke@435 | 2180 | if (fd >= 0) { |
duke@435 | 2181 | prmap_t p; |
duke@435 | 2182 | while(read(fd, &p, sizeof(p)) > 0) { |
duke@435 | 2183 | if (p.pr_vaddr == 0x0) { |
duke@435 | 2184 | st->print("Warning: Address: 0x%x, Size: %dK, ",p.pr_vaddr, p.pr_size/1024, p.pr_mapname); |
duke@435 | 2185 | st->print("Mapped file: %s, ", p.pr_mapname[0] == '\0' ? "None" : p.pr_mapname); |
duke@435 | 2186 | st->print("Access:"); |
duke@435 | 2187 | st->print("%s",(p.pr_mflags & MA_READ) ? "r" : "-"); |
duke@435 | 2188 | st->print("%s",(p.pr_mflags & MA_WRITE) ? "w" : "-"); |
duke@435 | 2189 | st->print("%s",(p.pr_mflags & MA_EXEC) ? "x" : "-"); |
duke@435 | 2190 | st->cr(); |
duke@435 | 2191 | status = true; |
duke@435 | 2192 | } |
duke@435 | 2193 | close(fd); |
duke@435 | 2194 | } |
duke@435 | 2195 | } |
duke@435 | 2196 | return status; |
duke@435 | 2197 | } |
duke@435 | 2198 | |
duke@435 | 2199 | void os::print_memory_info(outputStream* st) { |
duke@435 | 2200 | st->print("Memory:"); |
duke@435 | 2201 | st->print(" %dk page", os::vm_page_size()>>10); |
duke@435 | 2202 | st->print(", physical " UINT64_FORMAT "k", os::physical_memory()>>10); |
duke@435 | 2203 | st->print("(" UINT64_FORMAT "k free)", os::available_memory() >> 10); |
duke@435 | 2204 | st->cr(); |
duke@435 | 2205 | (void) check_addr0(st); |
duke@435 | 2206 | } |
duke@435 | 2207 | |
duke@435 | 2208 | // Taken from /usr/include/sys/machsig.h Supposed to be architecture specific |
duke@435 | 2209 | // but they're the same for all the solaris architectures that we support. |
duke@435 | 2210 | const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR", |
duke@435 | 2211 | "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG", |
duke@435 | 2212 | "ILL_COPROC", "ILL_BADSTK" }; |
duke@435 | 2213 | |
duke@435 | 2214 | const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV", |
duke@435 | 2215 | "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES", |
duke@435 | 2216 | "FPE_FLTINV", "FPE_FLTSUB" }; |
duke@435 | 2217 | |
duke@435 | 2218 | const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" }; |
duke@435 | 2219 | |
duke@435 | 2220 | const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" }; |
duke@435 | 2221 | |
duke@435 | 2222 | void os::print_siginfo(outputStream* st, void* siginfo) { |
duke@435 | 2223 | st->print("siginfo:"); |
duke@435 | 2224 | |
duke@435 | 2225 | const int buflen = 100; |
duke@435 | 2226 | char buf[buflen]; |
duke@435 | 2227 | siginfo_t *si = (siginfo_t*)siginfo; |
duke@435 | 2228 | st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen)); |
duke@435 | 2229 | char *err = strerror(si->si_errno); |
duke@435 | 2230 | if (si->si_errno != 0 && err != NULL) { |
duke@435 | 2231 | st->print("si_errno=%s", err); |
duke@435 | 2232 | } else { |
duke@435 | 2233 | st->print("si_errno=%d", si->si_errno); |
duke@435 | 2234 | } |
duke@435 | 2235 | const int c = si->si_code; |
duke@435 | 2236 | assert(c > 0, "unexpected si_code"); |
duke@435 | 2237 | switch (si->si_signo) { |
duke@435 | 2238 | case SIGILL: |
duke@435 | 2239 | st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]); |
duke@435 | 2240 | st->print(", si_addr=" PTR_FORMAT, si->si_addr); |
duke@435 | 2241 | break; |
duke@435 | 2242 | case SIGFPE: |
duke@435 | 2243 | st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]); |
duke@435 | 2244 | st->print(", si_addr=" PTR_FORMAT, si->si_addr); |
duke@435 | 2245 | break; |
duke@435 | 2246 | case SIGSEGV: |
duke@435 | 2247 | st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]); |
duke@435 | 2248 | st->print(", si_addr=" PTR_FORMAT, si->si_addr); |
duke@435 | 2249 | break; |
duke@435 | 2250 | case SIGBUS: |
duke@435 | 2251 | st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]); |
duke@435 | 2252 | st->print(", si_addr=" PTR_FORMAT, si->si_addr); |
duke@435 | 2253 | break; |
duke@435 | 2254 | default: |
duke@435 | 2255 | st->print(", si_code=%d", si->si_code); |
duke@435 | 2256 | // no si_addr |
duke@435 | 2257 | } |
duke@435 | 2258 | |
duke@435 | 2259 | if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) && |
duke@435 | 2260 | UseSharedSpaces) { |
duke@435 | 2261 | FileMapInfo* mapinfo = FileMapInfo::current_info(); |
duke@435 | 2262 | if (mapinfo->is_in_shared_space(si->si_addr)) { |
duke@435 | 2263 | st->print("\n\nError accessing class data sharing archive." \ |
duke@435 | 2264 | " Mapped file inaccessible during execution, " \ |
duke@435 | 2265 | " possible disk/network problem."); |
duke@435 | 2266 | } |
duke@435 | 2267 | } |
duke@435 | 2268 | st->cr(); |
duke@435 | 2269 | } |
duke@435 | 2270 | |
duke@435 | 2271 | // Moved from whole group, because we need them here for diagnostic |
duke@435 | 2272 | // prints. |
duke@435 | 2273 | #define OLDMAXSIGNUM 32 |
duke@435 | 2274 | static int Maxsignum = 0; |
duke@435 | 2275 | static int *ourSigFlags = NULL; |
duke@435 | 2276 | |
duke@435 | 2277 | extern "C" void sigINTRHandler(int, siginfo_t*, void*); |
duke@435 | 2278 | |
duke@435 | 2279 | int os::Solaris::get_our_sigflags(int sig) { |
duke@435 | 2280 | assert(ourSigFlags!=NULL, "signal data structure not initialized"); |
duke@435 | 2281 | assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); |
duke@435 | 2282 | return ourSigFlags[sig]; |
duke@435 | 2283 | } |
duke@435 | 2284 | |
duke@435 | 2285 | void os::Solaris::set_our_sigflags(int sig, int flags) { |
duke@435 | 2286 | assert(ourSigFlags!=NULL, "signal data structure not initialized"); |
duke@435 | 2287 | assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range"); |
duke@435 | 2288 | ourSigFlags[sig] = flags; |
duke@435 | 2289 | } |
duke@435 | 2290 | |
duke@435 | 2291 | |
duke@435 | 2292 | static const char* get_signal_handler_name(address handler, |
duke@435 | 2293 | char* buf, int buflen) { |
duke@435 | 2294 | int offset; |
duke@435 | 2295 | bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset); |
duke@435 | 2296 | if (found) { |
duke@435 | 2297 | // skip directory names |
duke@435 | 2298 | const char *p1, *p2; |
duke@435 | 2299 | p1 = buf; |
duke@435 | 2300 | size_t len = strlen(os::file_separator()); |
duke@435 | 2301 | while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len; |
duke@435 | 2302 | jio_snprintf(buf, buflen, "%s+0x%x", p1, offset); |
duke@435 | 2303 | } else { |
duke@435 | 2304 | jio_snprintf(buf, buflen, PTR_FORMAT, handler); |
duke@435 | 2305 | } |
duke@435 | 2306 | return buf; |
duke@435 | 2307 | } |
duke@435 | 2308 | |
duke@435 | 2309 | static void print_signal_handler(outputStream* st, int sig, |
duke@435 | 2310 | char* buf, size_t buflen) { |
duke@435 | 2311 | struct sigaction sa; |
duke@435 | 2312 | |
duke@435 | 2313 | sigaction(sig, NULL, &sa); |
duke@435 | 2314 | |
duke@435 | 2315 | st->print("%s: ", os::exception_name(sig, buf, buflen)); |
duke@435 | 2316 | |
duke@435 | 2317 | address handler = (sa.sa_flags & SA_SIGINFO) |
duke@435 | 2318 | ? CAST_FROM_FN_PTR(address, sa.sa_sigaction) |
duke@435 | 2319 | : CAST_FROM_FN_PTR(address, sa.sa_handler); |
duke@435 | 2320 | |
duke@435 | 2321 | if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) { |
duke@435 | 2322 | st->print("SIG_DFL"); |
duke@435 | 2323 | } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) { |
duke@435 | 2324 | st->print("SIG_IGN"); |
duke@435 | 2325 | } else { |
duke@435 | 2326 | st->print("[%s]", get_signal_handler_name(handler, buf, buflen)); |
duke@435 | 2327 | } |
duke@435 | 2328 | |
duke@435 | 2329 | st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask); |
duke@435 | 2330 | |
duke@435 | 2331 | address rh = VMError::get_resetted_sighandler(sig); |
duke@435 | 2332 | // May be, handler was resetted by VMError? |
duke@435 | 2333 | if(rh != NULL) { |
duke@435 | 2334 | handler = rh; |
duke@435 | 2335 | sa.sa_flags = VMError::get_resetted_sigflags(sig); |
duke@435 | 2336 | } |
duke@435 | 2337 | |
duke@435 | 2338 | st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags); |
duke@435 | 2339 | |
duke@435 | 2340 | // Check: is it our handler? |
duke@435 | 2341 | if(handler == CAST_FROM_FN_PTR(address, signalHandler) || |
duke@435 | 2342 | handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) { |
duke@435 | 2343 | // It is our signal handler |
duke@435 | 2344 | // check for flags |
duke@435 | 2345 | if(sa.sa_flags != os::Solaris::get_our_sigflags(sig)) { |
duke@435 | 2346 | st->print( |
duke@435 | 2347 | ", flags was changed from " PTR32_FORMAT ", consider using jsig library", |
duke@435 | 2348 | os::Solaris::get_our_sigflags(sig)); |
duke@435 | 2349 | } |
duke@435 | 2350 | } |
duke@435 | 2351 | st->cr(); |
duke@435 | 2352 | } |
duke@435 | 2353 | |
duke@435 | 2354 | void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) { |
duke@435 | 2355 | st->print_cr("Signal Handlers:"); |
duke@435 | 2356 | print_signal_handler(st, SIGSEGV, buf, buflen); |
duke@435 | 2357 | print_signal_handler(st, SIGBUS , buf, buflen); |
duke@435 | 2358 | print_signal_handler(st, SIGFPE , buf, buflen); |
duke@435 | 2359 | print_signal_handler(st, SIGPIPE, buf, buflen); |
duke@435 | 2360 | print_signal_handler(st, SIGXFSZ, buf, buflen); |
duke@435 | 2361 | print_signal_handler(st, SIGILL , buf, buflen); |
duke@435 | 2362 | print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen); |
duke@435 | 2363 | print_signal_handler(st, ASYNC_SIGNAL, buf, buflen); |
duke@435 | 2364 | print_signal_handler(st, BREAK_SIGNAL, buf, buflen); |
duke@435 | 2365 | print_signal_handler(st, SHUTDOWN1_SIGNAL , buf, buflen); |
duke@435 | 2366 | print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen); |
duke@435 | 2367 | print_signal_handler(st, SHUTDOWN3_SIGNAL, buf, buflen); |
duke@435 | 2368 | print_signal_handler(st, os::Solaris::SIGinterrupt(), buf, buflen); |
duke@435 | 2369 | print_signal_handler(st, os::Solaris::SIGasync(), buf, buflen); |
duke@435 | 2370 | } |
duke@435 | 2371 | |
duke@435 | 2372 | static char saved_jvm_path[MAXPATHLEN] = { 0 }; |
duke@435 | 2373 | |
duke@435 | 2374 | // Find the full path to the current module, libjvm.so or libjvm_g.so |
duke@435 | 2375 | void os::jvm_path(char *buf, jint buflen) { |
duke@435 | 2376 | // Error checking. |
duke@435 | 2377 | if (buflen < MAXPATHLEN) { |
duke@435 | 2378 | assert(false, "must use a large-enough buffer"); |
duke@435 | 2379 | buf[0] = '\0'; |
duke@435 | 2380 | return; |
duke@435 | 2381 | } |
duke@435 | 2382 | // Lazy resolve the path to current module. |
duke@435 | 2383 | if (saved_jvm_path[0] != 0) { |
duke@435 | 2384 | strcpy(buf, saved_jvm_path); |
duke@435 | 2385 | return; |
duke@435 | 2386 | } |
duke@435 | 2387 | |
duke@435 | 2388 | Dl_info dlinfo; |
duke@435 | 2389 | int ret = dladdr(CAST_FROM_FN_PTR(void *, os::jvm_path), &dlinfo); |
duke@435 | 2390 | assert(ret != 0, "cannot locate libjvm"); |
duke@435 | 2391 | realpath((char *)dlinfo.dli_fname, buf); |
duke@435 | 2392 | |
duke@435 | 2393 | if (strcmp(Arguments::sun_java_launcher(), "gamma") == 0) { |
duke@435 | 2394 | // Support for the gamma launcher. Typical value for buf is |
duke@435 | 2395 | // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". If "/jre/lib/" appears at |
duke@435 | 2396 | // the right place in the string, then assume we are installed in a JDK and |
duke@435 | 2397 | // we're done. Otherwise, check for a JAVA_HOME environment variable and fix |
duke@435 | 2398 | // up the path so it looks like libjvm.so is installed there (append a |
duke@435 | 2399 | // fake suffix hotspot/libjvm.so). |
duke@435 | 2400 | const char *p = buf + strlen(buf) - 1; |
duke@435 | 2401 | for (int count = 0; p > buf && count < 5; ++count) { |
duke@435 | 2402 | for (--p; p > buf && *p != '/'; --p) |
duke@435 | 2403 | /* empty */ ; |
duke@435 | 2404 | } |
duke@435 | 2405 | |
duke@435 | 2406 | if (strncmp(p, "/jre/lib/", 9) != 0) { |
duke@435 | 2407 | // Look for JAVA_HOME in the environment. |
duke@435 | 2408 | char* java_home_var = ::getenv("JAVA_HOME"); |
duke@435 | 2409 | if (java_home_var != NULL && java_home_var[0] != 0) { |
duke@435 | 2410 | char cpu_arch[12]; |
duke@435 | 2411 | sysinfo(SI_ARCHITECTURE, cpu_arch, sizeof(cpu_arch)); |
duke@435 | 2412 | #ifdef _LP64 |
duke@435 | 2413 | // If we are on sparc running a 64-bit vm, look in jre/lib/sparcv9. |
duke@435 | 2414 | if (strcmp(cpu_arch, "sparc") == 0) { |
duke@435 | 2415 | strcat(cpu_arch, "v9"); |
duke@435 | 2416 | } else if (strcmp(cpu_arch, "i386") == 0) { |
duke@435 | 2417 | strcpy(cpu_arch, "amd64"); |
duke@435 | 2418 | } |
duke@435 | 2419 | #endif |
duke@435 | 2420 | // Check the current module name "libjvm.so" or "libjvm_g.so". |
duke@435 | 2421 | p = strrchr(buf, '/'); |
duke@435 | 2422 | assert(strstr(p, "/libjvm") == p, "invalid library name"); |
duke@435 | 2423 | p = strstr(p, "_g") ? "_g" : ""; |
duke@435 | 2424 | |
duke@435 | 2425 | realpath(java_home_var, buf); |
duke@435 | 2426 | sprintf(buf + strlen(buf), "/jre/lib/%s", cpu_arch); |
duke@435 | 2427 | if (0 == access(buf, F_OK)) { |
duke@435 | 2428 | // Use current module name "libjvm[_g].so" instead of |
duke@435 | 2429 | // "libjvm"debug_only("_g")".so" since for fastdebug version |
duke@435 | 2430 | // we should have "libjvm.so" but debug_only("_g") adds "_g"! |
duke@435 | 2431 | // It is used when we are choosing the HPI library's name |
duke@435 | 2432 | // "libhpi[_g].so" in hpi::initialize_get_interface(). |
duke@435 | 2433 | sprintf(buf + strlen(buf), "/hotspot/libjvm%s.so", p); |
duke@435 | 2434 | } else { |
duke@435 | 2435 | // Go back to path of .so |
duke@435 | 2436 | realpath((char *)dlinfo.dli_fname, buf); |
duke@435 | 2437 | } |
duke@435 | 2438 | } |
duke@435 | 2439 | } |
duke@435 | 2440 | } |
duke@435 | 2441 | |
duke@435 | 2442 | strcpy(saved_jvm_path, buf); |
duke@435 | 2443 | } |
duke@435 | 2444 | |
duke@435 | 2445 | |
duke@435 | 2446 | void os::print_jni_name_prefix_on(outputStream* st, int args_size) { |
duke@435 | 2447 | // no prefix required, not even "_" |
duke@435 | 2448 | } |
duke@435 | 2449 | |
duke@435 | 2450 | |
duke@435 | 2451 | void os::print_jni_name_suffix_on(outputStream* st, int args_size) { |
duke@435 | 2452 | // no suffix required |
duke@435 | 2453 | } |
duke@435 | 2454 | |
duke@435 | 2455 | |
duke@435 | 2456 | // sun.misc.Signal |
duke@435 | 2457 | |
duke@435 | 2458 | extern "C" { |
duke@435 | 2459 | static void UserHandler(int sig, void *siginfo, void *context) { |
duke@435 | 2460 | // Ctrl-C is pressed during error reporting, likely because the error |
duke@435 | 2461 | // handler fails to abort. Let VM die immediately. |
duke@435 | 2462 | if (sig == SIGINT && is_error_reported()) { |
duke@435 | 2463 | os::die(); |
duke@435 | 2464 | } |
duke@435 | 2465 | |
duke@435 | 2466 | os::signal_notify(sig); |
duke@435 | 2467 | // We do not need to reinstate the signal handler each time... |
duke@435 | 2468 | } |
duke@435 | 2469 | } |
duke@435 | 2470 | |
duke@435 | 2471 | void* os::user_handler() { |
duke@435 | 2472 | return CAST_FROM_FN_PTR(void*, UserHandler); |
duke@435 | 2473 | } |
duke@435 | 2474 | |
duke@435 | 2475 | extern "C" { |
duke@435 | 2476 | typedef void (*sa_handler_t)(int); |
duke@435 | 2477 | typedef void (*sa_sigaction_t)(int, siginfo_t *, void *); |
duke@435 | 2478 | } |
duke@435 | 2479 | |
duke@435 | 2480 | void* os::signal(int signal_number, void* handler) { |
duke@435 | 2481 | struct sigaction sigAct, oldSigAct; |
duke@435 | 2482 | sigfillset(&(sigAct.sa_mask)); |
duke@435 | 2483 | sigAct.sa_flags = SA_RESTART & ~SA_RESETHAND; |
duke@435 | 2484 | sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler); |
duke@435 | 2485 | |
duke@435 | 2486 | if (sigaction(signal_number, &sigAct, &oldSigAct)) |
duke@435 | 2487 | // -1 means registration failed |
duke@435 | 2488 | return (void *)-1; |
duke@435 | 2489 | |
duke@435 | 2490 | return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler); |
duke@435 | 2491 | } |
duke@435 | 2492 | |
duke@435 | 2493 | void os::signal_raise(int signal_number) { |
duke@435 | 2494 | raise(signal_number); |
duke@435 | 2495 | } |
duke@435 | 2496 | |
duke@435 | 2497 | /* |
duke@435 | 2498 | * The following code is moved from os.cpp for making this |
duke@435 | 2499 | * code platform specific, which it is by its very nature. |
duke@435 | 2500 | */ |
duke@435 | 2501 | |
duke@435 | 2502 | // a counter for each possible signal value |
duke@435 | 2503 | static int Sigexit = 0; |
duke@435 | 2504 | static int Maxlibjsigsigs; |
duke@435 | 2505 | static jint *pending_signals = NULL; |
duke@435 | 2506 | static int *preinstalled_sigs = NULL; |
duke@435 | 2507 | static struct sigaction *chainedsigactions = NULL; |
duke@435 | 2508 | static sema_t sig_sem; |
duke@435 | 2509 | typedef int (*version_getting_t)(); |
duke@435 | 2510 | version_getting_t os::Solaris::get_libjsig_version = NULL; |
duke@435 | 2511 | static int libjsigversion = NULL; |
duke@435 | 2512 | |
duke@435 | 2513 | int os::sigexitnum_pd() { |
duke@435 | 2514 | assert(Sigexit > 0, "signal memory not yet initialized"); |
duke@435 | 2515 | return Sigexit; |
duke@435 | 2516 | } |
duke@435 | 2517 | |
duke@435 | 2518 | void os::Solaris::init_signal_mem() { |
duke@435 | 2519 | // Initialize signal structures |
duke@435 | 2520 | Maxsignum = SIGRTMAX; |
duke@435 | 2521 | Sigexit = Maxsignum+1; |
duke@435 | 2522 | assert(Maxsignum >0, "Unable to obtain max signal number"); |
duke@435 | 2523 | |
duke@435 | 2524 | Maxlibjsigsigs = Maxsignum; |
duke@435 | 2525 | |
duke@435 | 2526 | // pending_signals has one int per signal |
duke@435 | 2527 | // The additional signal is for SIGEXIT - exit signal to signal_thread |
duke@435 | 2528 | pending_signals = (jint *)os::malloc(sizeof(jint) * (Sigexit+1)); |
duke@435 | 2529 | memset(pending_signals, 0, (sizeof(jint) * (Sigexit+1))); |
duke@435 | 2530 | |
duke@435 | 2531 | if (UseSignalChaining) { |
duke@435 | 2532 | chainedsigactions = (struct sigaction *)malloc(sizeof(struct sigaction) |
duke@435 | 2533 | * (Maxsignum + 1)); |
duke@435 | 2534 | memset(chainedsigactions, 0, (sizeof(struct sigaction) * (Maxsignum + 1))); |
duke@435 | 2535 | preinstalled_sigs = (int *)os::malloc(sizeof(int) * (Maxsignum + 1)); |
duke@435 | 2536 | memset(preinstalled_sigs, 0, (sizeof(int) * (Maxsignum + 1))); |
duke@435 | 2537 | } |
duke@435 | 2538 | ourSigFlags = (int*)malloc(sizeof(int) * (Maxsignum + 1 )); |
duke@435 | 2539 | memset(ourSigFlags, 0, sizeof(int) * (Maxsignum + 1)); |
duke@435 | 2540 | } |
duke@435 | 2541 | |
duke@435 | 2542 | void os::signal_init_pd() { |
duke@435 | 2543 | int ret; |
duke@435 | 2544 | |
duke@435 | 2545 | ret = ::sema_init(&sig_sem, 0, NULL, NULL); |
duke@435 | 2546 | assert(ret == 0, "sema_init() failed"); |
duke@435 | 2547 | } |
duke@435 | 2548 | |
duke@435 | 2549 | void os::signal_notify(int signal_number) { |
duke@435 | 2550 | int ret; |
duke@435 | 2551 | |
duke@435 | 2552 | Atomic::inc(&pending_signals[signal_number]); |
duke@435 | 2553 | ret = ::sema_post(&sig_sem); |
duke@435 | 2554 | assert(ret == 0, "sema_post() failed"); |
duke@435 | 2555 | } |
duke@435 | 2556 | |
duke@435 | 2557 | static int check_pending_signals(bool wait_for_signal) { |
duke@435 | 2558 | int ret; |
duke@435 | 2559 | while (true) { |
duke@435 | 2560 | for (int i = 0; i < Sigexit + 1; i++) { |
duke@435 | 2561 | jint n = pending_signals[i]; |
duke@435 | 2562 | if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) { |
duke@435 | 2563 | return i; |
duke@435 | 2564 | } |
duke@435 | 2565 | } |
duke@435 | 2566 | if (!wait_for_signal) { |
duke@435 | 2567 | return -1; |
duke@435 | 2568 | } |
duke@435 | 2569 | JavaThread *thread = JavaThread::current(); |
duke@435 | 2570 | ThreadBlockInVM tbivm(thread); |
duke@435 | 2571 | |
duke@435 | 2572 | bool threadIsSuspended; |
duke@435 | 2573 | do { |
duke@435 | 2574 | thread->set_suspend_equivalent(); |
duke@435 | 2575 | // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() |
duke@435 | 2576 | while((ret = ::sema_wait(&sig_sem)) == EINTR) |
duke@435 | 2577 | ; |
duke@435 | 2578 | assert(ret == 0, "sema_wait() failed"); |
duke@435 | 2579 | |
duke@435 | 2580 | // were we externally suspended while we were waiting? |
duke@435 | 2581 | threadIsSuspended = thread->handle_special_suspend_equivalent_condition(); |
duke@435 | 2582 | if (threadIsSuspended) { |
duke@435 | 2583 | // |
duke@435 | 2584 | // The semaphore has been incremented, but while we were waiting |
duke@435 | 2585 | // another thread suspended us. We don't want to continue running |
duke@435 | 2586 | // while suspended because that would surprise the thread that |
duke@435 | 2587 | // suspended us. |
duke@435 | 2588 | // |
duke@435 | 2589 | ret = ::sema_post(&sig_sem); |
duke@435 | 2590 | assert(ret == 0, "sema_post() failed"); |
duke@435 | 2591 | |
duke@435 | 2592 | thread->java_suspend_self(); |
duke@435 | 2593 | } |
duke@435 | 2594 | } while (threadIsSuspended); |
duke@435 | 2595 | } |
duke@435 | 2596 | } |
duke@435 | 2597 | |
duke@435 | 2598 | int os::signal_lookup() { |
duke@435 | 2599 | return check_pending_signals(false); |
duke@435 | 2600 | } |
duke@435 | 2601 | |
duke@435 | 2602 | int os::signal_wait() { |
duke@435 | 2603 | return check_pending_signals(true); |
duke@435 | 2604 | } |
duke@435 | 2605 | |
duke@435 | 2606 | //////////////////////////////////////////////////////////////////////////////// |
duke@435 | 2607 | // Virtual Memory |
duke@435 | 2608 | |
duke@435 | 2609 | static int page_size = -1; |
duke@435 | 2610 | |
duke@435 | 2611 | // The mmap MAP_ALIGN flag is supported on Solaris 9 and later. init_2() will |
duke@435 | 2612 | // clear this var if support is not available. |
duke@435 | 2613 | static bool has_map_align = true; |
duke@435 | 2614 | |
duke@435 | 2615 | int os::vm_page_size() { |
duke@435 | 2616 | assert(page_size != -1, "must call os::init"); |
duke@435 | 2617 | return page_size; |
duke@435 | 2618 | } |
duke@435 | 2619 | |
duke@435 | 2620 | // Solaris allocates memory by pages. |
duke@435 | 2621 | int os::vm_allocation_granularity() { |
duke@435 | 2622 | assert(page_size != -1, "must call os::init"); |
duke@435 | 2623 | return page_size; |
duke@435 | 2624 | } |
duke@435 | 2625 | |
duke@435 | 2626 | bool os::commit_memory(char* addr, size_t bytes) { |
duke@435 | 2627 | size_t size = bytes; |
duke@435 | 2628 | return |
duke@435 | 2629 | NULL != Solaris::mmap_chunk(addr, size, MAP_PRIVATE|MAP_FIXED, |
duke@435 | 2630 | PROT_READ | PROT_WRITE | PROT_EXEC); |
duke@435 | 2631 | } |
duke@435 | 2632 | |
duke@435 | 2633 | bool os::commit_memory(char* addr, size_t bytes, size_t alignment_hint) { |
duke@435 | 2634 | if (commit_memory(addr, bytes)) { |
duke@435 | 2635 | if (UseMPSS && alignment_hint > (size_t)vm_page_size()) { |
duke@435 | 2636 | // If the large page size has been set and the VM |
duke@435 | 2637 | // is using large pages, use the large page size |
duke@435 | 2638 | // if it is smaller than the alignment hint. This is |
duke@435 | 2639 | // a case where the VM wants to use a larger alignment size |
duke@435 | 2640 | // for its own reasons but still want to use large pages |
duke@435 | 2641 | // (which is what matters to setting the mpss range. |
duke@435 | 2642 | size_t page_size = 0; |
duke@435 | 2643 | if (large_page_size() < alignment_hint) { |
duke@435 | 2644 | assert(UseLargePages, "Expected to be here for large page use only"); |
duke@435 | 2645 | page_size = large_page_size(); |
duke@435 | 2646 | } else { |
duke@435 | 2647 | // If the alignment hint is less than the large page |
duke@435 | 2648 | // size, the VM wants a particular alignment (thus the hint) |
duke@435 | 2649 | // for internal reasons. Try to set the mpss range using |
duke@435 | 2650 | // the alignment_hint. |
duke@435 | 2651 | page_size = alignment_hint; |
duke@435 | 2652 | } |
duke@435 | 2653 | // Since this is a hint, ignore any failures. |
duke@435 | 2654 | (void)Solaris::set_mpss_range(addr, bytes, page_size); |
duke@435 | 2655 | } |
duke@435 | 2656 | return true; |
duke@435 | 2657 | } |
duke@435 | 2658 | return false; |
duke@435 | 2659 | } |
duke@435 | 2660 | |
duke@435 | 2661 | // Uncommit the pages in a specified region. |
duke@435 | 2662 | void os::free_memory(char* addr, size_t bytes) { |
duke@435 | 2663 | if (madvise(addr, bytes, MADV_FREE) < 0) { |
duke@435 | 2664 | debug_only(warning("MADV_FREE failed.")); |
duke@435 | 2665 | return; |
duke@435 | 2666 | } |
duke@435 | 2667 | } |
duke@435 | 2668 | |
duke@435 | 2669 | // Change the page size in a given range. |
duke@435 | 2670 | void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) { |
duke@435 | 2671 | assert((intptr_t)addr % alignment_hint == 0, "Address should be aligned."); |
duke@435 | 2672 | assert((intptr_t)(addr + bytes) % alignment_hint == 0, "End should be aligned."); |
duke@435 | 2673 | Solaris::set_mpss_range(addr, bytes, alignment_hint); |
duke@435 | 2674 | } |
duke@435 | 2675 | |
duke@435 | 2676 | // Tell the OS to make the range local to the first-touching LWP |
iveresov@576 | 2677 | void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) { |
duke@435 | 2678 | assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); |
duke@435 | 2679 | if (madvise(addr, bytes, MADV_ACCESS_LWP) < 0) { |
duke@435 | 2680 | debug_only(warning("MADV_ACCESS_LWP failed.")); |
duke@435 | 2681 | } |
duke@435 | 2682 | } |
duke@435 | 2683 | |
duke@435 | 2684 | // Tell the OS that this range would be accessed from different LWPs. |
duke@435 | 2685 | void os::numa_make_global(char *addr, size_t bytes) { |
duke@435 | 2686 | assert((intptr_t)addr % os::vm_page_size() == 0, "Address should be page-aligned."); |
duke@435 | 2687 | if (madvise(addr, bytes, MADV_ACCESS_MANY) < 0) { |
duke@435 | 2688 | debug_only(warning("MADV_ACCESS_MANY failed.")); |
duke@435 | 2689 | } |
duke@435 | 2690 | } |
duke@435 | 2691 | |
duke@435 | 2692 | // Get the number of the locality groups. |
duke@435 | 2693 | size_t os::numa_get_groups_num() { |
duke@435 | 2694 | size_t n = Solaris::lgrp_nlgrps(Solaris::lgrp_cookie()); |
duke@435 | 2695 | return n != -1 ? n : 1; |
duke@435 | 2696 | } |
duke@435 | 2697 | |
duke@435 | 2698 | // Get a list of leaf locality groups. A leaf lgroup is group that |
duke@435 | 2699 | // doesn't have any children. Typical leaf group is a CPU or a CPU/memory |
duke@435 | 2700 | // board. An LWP is assigned to one of these groups upon creation. |
duke@435 | 2701 | size_t os::numa_get_leaf_groups(int *ids, size_t size) { |
duke@435 | 2702 | if ((ids[0] = Solaris::lgrp_root(Solaris::lgrp_cookie())) == -1) { |
duke@435 | 2703 | ids[0] = 0; |
duke@435 | 2704 | return 1; |
duke@435 | 2705 | } |
duke@435 | 2706 | int result_size = 0, top = 1, bottom = 0, cur = 0; |
duke@435 | 2707 | for (int k = 0; k < size; k++) { |
duke@435 | 2708 | int r = Solaris::lgrp_children(Solaris::lgrp_cookie(), ids[cur], |
duke@435 | 2709 | (Solaris::lgrp_id_t*)&ids[top], size - top); |
duke@435 | 2710 | if (r == -1) { |
duke@435 | 2711 | ids[0] = 0; |
duke@435 | 2712 | return 1; |
duke@435 | 2713 | } |
duke@435 | 2714 | if (!r) { |
iveresov@579 | 2715 | // That's a leaf node. |
duke@435 | 2716 | assert (bottom <= cur, "Sanity check"); |
iveresov@579 | 2717 | // Check if the node has memory |
iveresov@579 | 2718 | if (Solaris::lgrp_resources(Solaris::lgrp_cookie(), ids[cur], |
iveresov@579 | 2719 | NULL, 0, LGRP_RSRC_MEM) > 0) { |
iveresov@579 | 2720 | ids[bottom++] = ids[cur]; |
iveresov@579 | 2721 | } |
duke@435 | 2722 | } |
duke@435 | 2723 | top += r; |
duke@435 | 2724 | cur++; |
duke@435 | 2725 | } |
iveresov@703 | 2726 | if (bottom == 0) { |
iveresov@703 | 2727 | // Handle a situation, when the OS reports no memory available. |
iveresov@703 | 2728 | // Assume UMA architecture. |
iveresov@703 | 2729 | ids[0] = 0; |
iveresov@703 | 2730 | return 1; |
iveresov@703 | 2731 | } |
duke@435 | 2732 | return bottom; |
duke@435 | 2733 | } |
duke@435 | 2734 | |
ysr@777 | 2735 | // Detect the topology change. Typically happens during CPU plugging-unplugging. |
duke@435 | 2736 | bool os::numa_topology_changed() { |
duke@435 | 2737 | int is_stale = Solaris::lgrp_cookie_stale(Solaris::lgrp_cookie()); |
duke@435 | 2738 | if (is_stale != -1 && is_stale) { |
duke@435 | 2739 | Solaris::lgrp_fini(Solaris::lgrp_cookie()); |
duke@435 | 2740 | Solaris::lgrp_cookie_t c = Solaris::lgrp_init(Solaris::LGRP_VIEW_CALLER); |
duke@435 | 2741 | assert(c != 0, "Failure to initialize LGRP API"); |
duke@435 | 2742 | Solaris::set_lgrp_cookie(c); |
duke@435 | 2743 | return true; |
duke@435 | 2744 | } |
duke@435 | 2745 | return false; |
duke@435 | 2746 | } |
duke@435 | 2747 | |
duke@435 | 2748 | // Get the group id of the current LWP. |
duke@435 | 2749 | int os::numa_get_group_id() { |
iveresov@579 | 2750 | int lgrp_id = Solaris::lgrp_home(P_LWPID, P_MYID); |
duke@435 | 2751 | if (lgrp_id == -1) { |
duke@435 | 2752 | return 0; |
duke@435 | 2753 | } |
iveresov@579 | 2754 | const int size = os::numa_get_groups_num(); |
iveresov@579 | 2755 | int *ids = (int*)alloca(size * sizeof(int)); |
iveresov@579 | 2756 | |
iveresov@579 | 2757 | // Get the ids of all lgroups with memory; r is the count. |
iveresov@579 | 2758 | int r = Solaris::lgrp_resources(Solaris::lgrp_cookie(), lgrp_id, |
iveresov@579 | 2759 | (Solaris::lgrp_id_t*)ids, size, LGRP_RSRC_MEM); |
iveresov@579 | 2760 | if (r <= 0) { |
iveresov@579 | 2761 | return 0; |
iveresov@579 | 2762 | } |
iveresov@579 | 2763 | return ids[os::random() % r]; |
duke@435 | 2764 | } |
duke@435 | 2765 | |
duke@435 | 2766 | // Request information about the page. |
duke@435 | 2767 | bool os::get_page_info(char *start, page_info* info) { |
duke@435 | 2768 | const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; |
duke@435 | 2769 | uint64_t addr = (uintptr_t)start; |
duke@435 | 2770 | uint64_t outdata[2]; |
duke@435 | 2771 | uint_t validity = 0; |
duke@435 | 2772 | |
duke@435 | 2773 | if (os::Solaris::meminfo(&addr, 1, info_types, 2, outdata, &validity) < 0) { |
duke@435 | 2774 | return false; |
duke@435 | 2775 | } |
duke@435 | 2776 | |
duke@435 | 2777 | info->size = 0; |
duke@435 | 2778 | info->lgrp_id = -1; |
duke@435 | 2779 | |
duke@435 | 2780 | if ((validity & 1) != 0) { |
duke@435 | 2781 | if ((validity & 2) != 0) { |
duke@435 | 2782 | info->lgrp_id = outdata[0]; |
duke@435 | 2783 | } |
duke@435 | 2784 | if ((validity & 4) != 0) { |
duke@435 | 2785 | info->size = outdata[1]; |
duke@435 | 2786 | } |
duke@435 | 2787 | return true; |
duke@435 | 2788 | } |
duke@435 | 2789 | return false; |
duke@435 | 2790 | } |
duke@435 | 2791 | |
duke@435 | 2792 | // Scan the pages from start to end until a page different than |
duke@435 | 2793 | // the one described in the info parameter is encountered. |
duke@435 | 2794 | char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { |
duke@435 | 2795 | const uint_t info_types[] = { MEMINFO_VLGRP, MEMINFO_VPAGESIZE }; |
duke@435 | 2796 | const size_t types = sizeof(info_types) / sizeof(info_types[0]); |
duke@435 | 2797 | uint64_t addrs[MAX_MEMINFO_CNT], outdata[types * MAX_MEMINFO_CNT]; |
duke@435 | 2798 | uint_t validity[MAX_MEMINFO_CNT]; |
duke@435 | 2799 | |
duke@435 | 2800 | size_t page_size = MAX2((size_t)os::vm_page_size(), page_expected->size); |
duke@435 | 2801 | uint64_t p = (uint64_t)start; |
duke@435 | 2802 | while (p < (uint64_t)end) { |
duke@435 | 2803 | addrs[0] = p; |
duke@435 | 2804 | size_t addrs_count = 1; |
duke@435 | 2805 | while (addrs_count < MAX_MEMINFO_CNT && addrs[addrs_count - 1] < (uint64_t)end) { |
duke@435 | 2806 | addrs[addrs_count] = addrs[addrs_count - 1] + page_size; |
duke@435 | 2807 | addrs_count++; |
duke@435 | 2808 | } |
duke@435 | 2809 | |
duke@435 | 2810 | if (os::Solaris::meminfo(addrs, addrs_count, info_types, types, outdata, validity) < 0) { |
duke@435 | 2811 | return NULL; |
duke@435 | 2812 | } |
duke@435 | 2813 | |
duke@435 | 2814 | size_t i = 0; |
duke@435 | 2815 | for (; i < addrs_count; i++) { |
duke@435 | 2816 | if ((validity[i] & 1) != 0) { |
duke@435 | 2817 | if ((validity[i] & 4) != 0) { |
duke@435 | 2818 | if (outdata[types * i + 1] != page_expected->size) { |
duke@435 | 2819 | break; |
duke@435 | 2820 | } |
duke@435 | 2821 | } else |
duke@435 | 2822 | if (page_expected->size != 0) { |
duke@435 | 2823 | break; |
duke@435 | 2824 | } |
duke@435 | 2825 | |
duke@435 | 2826 | if ((validity[i] & 2) != 0 && page_expected->lgrp_id > 0) { |
duke@435 | 2827 | if (outdata[types * i] != page_expected->lgrp_id) { |
duke@435 | 2828 | break; |
duke@435 | 2829 | } |
duke@435 | 2830 | } |
duke@435 | 2831 | } else { |
duke@435 | 2832 | return NULL; |
duke@435 | 2833 | } |
duke@435 | 2834 | } |
duke@435 | 2835 | |
duke@435 | 2836 | if (i != addrs_count) { |
duke@435 | 2837 | if ((validity[i] & 2) != 0) { |
duke@435 | 2838 | page_found->lgrp_id = outdata[types * i]; |
duke@435 | 2839 | } else { |
duke@435 | 2840 | page_found->lgrp_id = -1; |
duke@435 | 2841 | } |
duke@435 | 2842 | if ((validity[i] & 4) != 0) { |
duke@435 | 2843 | page_found->size = outdata[types * i + 1]; |
duke@435 | 2844 | } else { |
duke@435 | 2845 | page_found->size = 0; |
duke@435 | 2846 | } |
duke@435 | 2847 | return (char*)addrs[i]; |
duke@435 | 2848 | } |
duke@435 | 2849 | |
duke@435 | 2850 | p = addrs[addrs_count - 1] + page_size; |
duke@435 | 2851 | } |
duke@435 | 2852 | return end; |
duke@435 | 2853 | } |
duke@435 | 2854 | |
duke@435 | 2855 | bool os::uncommit_memory(char* addr, size_t bytes) { |
duke@435 | 2856 | size_t size = bytes; |
duke@435 | 2857 | // Map uncommitted pages PROT_NONE so we fail early if we touch an |
duke@435 | 2858 | // uncommitted page. Otherwise, the read/write might succeed if we |
duke@435 | 2859 | // have enough swap space to back the physical page. |
duke@435 | 2860 | return |
duke@435 | 2861 | NULL != Solaris::mmap_chunk(addr, size, |
duke@435 | 2862 | MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, |
duke@435 | 2863 | PROT_NONE); |
duke@435 | 2864 | } |
duke@435 | 2865 | |
duke@435 | 2866 | char* os::Solaris::mmap_chunk(char *addr, size_t size, int flags, int prot) { |
duke@435 | 2867 | char *b = (char *)mmap(addr, size, prot, flags, os::Solaris::_dev_zero_fd, 0); |
duke@435 | 2868 | |
duke@435 | 2869 | if (b == MAP_FAILED) { |
duke@435 | 2870 | return NULL; |
duke@435 | 2871 | } |
duke@435 | 2872 | return b; |
duke@435 | 2873 | } |
duke@435 | 2874 | |
sbohne@495 | 2875 | char* os::Solaris::anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed) { |
sbohne@495 | 2876 | char* addr = requested_addr; |
sbohne@495 | 2877 | int flags = MAP_PRIVATE | MAP_NORESERVE; |
sbohne@495 | 2878 | |
sbohne@495 | 2879 | assert(!(fixed && (alignment_hint > 0)), "alignment hint meaningless with fixed mmap"); |
sbohne@495 | 2880 | |
sbohne@495 | 2881 | if (fixed) { |
sbohne@495 | 2882 | flags |= MAP_FIXED; |
sbohne@495 | 2883 | } else if (has_map_align && (alignment_hint > (size_t) vm_page_size())) { |
duke@435 | 2884 | flags |= MAP_ALIGN; |
duke@435 | 2885 | addr = (char*) alignment_hint; |
duke@435 | 2886 | } |
duke@435 | 2887 | |
duke@435 | 2888 | // Map uncommitted pages PROT_NONE so we fail early if we touch an |
duke@435 | 2889 | // uncommitted page. Otherwise, the read/write might succeed if we |
duke@435 | 2890 | // have enough swap space to back the physical page. |
sbohne@495 | 2891 | return mmap_chunk(addr, bytes, flags, PROT_NONE); |
sbohne@495 | 2892 | } |
sbohne@495 | 2893 | |
sbohne@495 | 2894 | char* os::reserve_memory(size_t bytes, char* requested_addr, size_t alignment_hint) { |
sbohne@495 | 2895 | char* addr = Solaris::anon_mmap(requested_addr, bytes, alignment_hint, (requested_addr != NULL)); |
duke@435 | 2896 | |
duke@435 | 2897 | guarantee(requested_addr == NULL || requested_addr == addr, |
duke@435 | 2898 | "OS failed to return requested mmap address."); |
duke@435 | 2899 | return addr; |
duke@435 | 2900 | } |
duke@435 | 2901 | |
duke@435 | 2902 | // Reserve memory at an arbitrary address, only if that area is |
duke@435 | 2903 | // available (and not reserved for something else). |
duke@435 | 2904 | |
duke@435 | 2905 | char* os::attempt_reserve_memory_at(size_t bytes, char* requested_addr) { |
duke@435 | 2906 | const int max_tries = 10; |
duke@435 | 2907 | char* base[max_tries]; |
duke@435 | 2908 | size_t size[max_tries]; |
duke@435 | 2909 | |
duke@435 | 2910 | // Solaris adds a gap between mmap'ed regions. The size of the gap |
duke@435 | 2911 | // is dependent on the requested size and the MMU. Our initial gap |
duke@435 | 2912 | // value here is just a guess and will be corrected later. |
duke@435 | 2913 | bool had_top_overlap = false; |
duke@435 | 2914 | bool have_adjusted_gap = false; |
duke@435 | 2915 | size_t gap = 0x400000; |
duke@435 | 2916 | |
duke@435 | 2917 | // Assert only that the size is a multiple of the page size, since |
duke@435 | 2918 | // that's all that mmap requires, and since that's all we really know |
duke@435 | 2919 | // about at this low abstraction level. If we need higher alignment, |
duke@435 | 2920 | // we can either pass an alignment to this method or verify alignment |
duke@435 | 2921 | // in one of the methods further up the call chain. See bug 5044738. |
duke@435 | 2922 | assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block"); |
duke@435 | 2923 | |
sbohne@495 | 2924 | // Since snv_84, Solaris attempts to honor the address hint - see 5003415. |
sbohne@495 | 2925 | // Give it a try, if the kernel honors the hint we can return immediately. |
sbohne@495 | 2926 | char* addr = Solaris::anon_mmap(requested_addr, bytes, 0, false); |
sbohne@495 | 2927 | volatile int err = errno; |
sbohne@495 | 2928 | if (addr == requested_addr) { |
sbohne@495 | 2929 | return addr; |
sbohne@495 | 2930 | } else if (addr != NULL) { |
sbohne@495 | 2931 | unmap_memory(addr, bytes); |
sbohne@495 | 2932 | } |
sbohne@495 | 2933 | |
sbohne@495 | 2934 | if (PrintMiscellaneous && Verbose) { |
sbohne@495 | 2935 | char buf[256]; |
sbohne@495 | 2936 | buf[0] = '\0'; |
sbohne@495 | 2937 | if (addr == NULL) { |
sbohne@495 | 2938 | jio_snprintf(buf, sizeof(buf), ": %s", strerror(err)); |
sbohne@495 | 2939 | } |
sbohne@495 | 2940 | warning("attempt_reserve_memory_at: couldn't reserve %d bytes at " |
sbohne@495 | 2941 | PTR_FORMAT ": reserve_memory_helper returned " PTR_FORMAT |
sbohne@495 | 2942 | "%s", bytes, requested_addr, addr, buf); |
sbohne@495 | 2943 | } |
sbohne@495 | 2944 | |
sbohne@495 | 2945 | // Address hint method didn't work. Fall back to the old method. |
sbohne@495 | 2946 | // In theory, once SNV becomes our oldest supported platform, this |
sbohne@495 | 2947 | // code will no longer be needed. |
sbohne@495 | 2948 | // |
duke@435 | 2949 | // Repeatedly allocate blocks until the block is allocated at the |
duke@435 | 2950 | // right spot. Give up after max_tries. |
duke@435 | 2951 | int i; |
duke@435 | 2952 | for (i = 0; i < max_tries; ++i) { |
duke@435 | 2953 | base[i] = reserve_memory(bytes); |
duke@435 | 2954 | |
duke@435 | 2955 | if (base[i] != NULL) { |
duke@435 | 2956 | // Is this the block we wanted? |
duke@435 | 2957 | if (base[i] == requested_addr) { |
duke@435 | 2958 | size[i] = bytes; |
duke@435 | 2959 | break; |
duke@435 | 2960 | } |
duke@435 | 2961 | |
duke@435 | 2962 | // check that the gap value is right |
duke@435 | 2963 | if (had_top_overlap && !have_adjusted_gap) { |
duke@435 | 2964 | size_t actual_gap = base[i-1] - base[i] - bytes; |
duke@435 | 2965 | if (gap != actual_gap) { |
duke@435 | 2966 | // adjust the gap value and retry the last 2 allocations |
duke@435 | 2967 | assert(i > 0, "gap adjustment code problem"); |
duke@435 | 2968 | have_adjusted_gap = true; // adjust the gap only once, just in case |
duke@435 | 2969 | gap = actual_gap; |
duke@435 | 2970 | if (PrintMiscellaneous && Verbose) { |
duke@435 | 2971 | warning("attempt_reserve_memory_at: adjusted gap to 0x%lx", gap); |
duke@435 | 2972 | } |
duke@435 | 2973 | unmap_memory(base[i], bytes); |
duke@435 | 2974 | unmap_memory(base[i-1], size[i-1]); |
duke@435 | 2975 | i-=2; |
duke@435 | 2976 | continue; |
duke@435 | 2977 | } |
duke@435 | 2978 | } |
duke@435 | 2979 | |
duke@435 | 2980 | // Does this overlap the block we wanted? Give back the overlapped |
duke@435 | 2981 | // parts and try again. |
duke@435 | 2982 | // |
duke@435 | 2983 | // There is still a bug in this code: if top_overlap == bytes, |
duke@435 | 2984 | // the overlap is offset from requested region by the value of gap. |
duke@435 | 2985 | // In this case giving back the overlapped part will not work, |
duke@435 | 2986 | // because we'll give back the entire block at base[i] and |
duke@435 | 2987 | // therefore the subsequent allocation will not generate a new gap. |
duke@435 | 2988 | // This could be fixed with a new algorithm that used larger |
duke@435 | 2989 | // or variable size chunks to find the requested region - |
duke@435 | 2990 | // but such a change would introduce additional complications. |
duke@435 | 2991 | // It's rare enough that the planets align for this bug, |
duke@435 | 2992 | // so we'll just wait for a fix for 6204603/5003415 which |
duke@435 | 2993 | // will provide a mmap flag to allow us to avoid this business. |
duke@435 | 2994 | |
duke@435 | 2995 | size_t top_overlap = requested_addr + (bytes + gap) - base[i]; |
duke@435 | 2996 | if (top_overlap >= 0 && top_overlap < bytes) { |
duke@435 | 2997 | had_top_overlap = true; |
duke@435 | 2998 | unmap_memory(base[i], top_overlap); |
duke@435 | 2999 | base[i] += top_overlap; |
duke@435 | 3000 | size[i] = bytes - top_overlap; |
duke@435 | 3001 | } else { |
duke@435 | 3002 | size_t bottom_overlap = base[i] + bytes - requested_addr; |
duke@435 | 3003 | if (bottom_overlap >= 0 && bottom_overlap < bytes) { |
duke@435 | 3004 | if (PrintMiscellaneous && Verbose && bottom_overlap == 0) { |
duke@435 | 3005 | warning("attempt_reserve_memory_at: possible alignment bug"); |
duke@435 | 3006 | } |
duke@435 | 3007 | unmap_memory(requested_addr, bottom_overlap); |
duke@435 | 3008 | size[i] = bytes - bottom_overlap; |
duke@435 | 3009 | } else { |
duke@435 | 3010 | size[i] = bytes; |
duke@435 | 3011 | } |
duke@435 | 3012 | } |
duke@435 | 3013 | } |
duke@435 | 3014 | } |
duke@435 | 3015 | |
duke@435 | 3016 | // Give back the unused reserved pieces. |
duke@435 | 3017 | |
duke@435 | 3018 | for (int j = 0; j < i; ++j) { |
duke@435 | 3019 | if (base[j] != NULL) { |
duke@435 | 3020 | unmap_memory(base[j], size[j]); |
duke@435 | 3021 | } |
duke@435 | 3022 | } |
duke@435 | 3023 | |
duke@435 | 3024 | return (i < max_tries) ? requested_addr : NULL; |
duke@435 | 3025 | } |
duke@435 | 3026 | |
duke@435 | 3027 | bool os::release_memory(char* addr, size_t bytes) { |
duke@435 | 3028 | size_t size = bytes; |
duke@435 | 3029 | return munmap(addr, size) == 0; |
duke@435 | 3030 | } |
duke@435 | 3031 | |
duke@435 | 3032 | static bool solaris_mprotect(char* addr, size_t bytes, int prot) { |
duke@435 | 3033 | assert(addr == (char*)align_size_down((uintptr_t)addr, os::vm_page_size()), |
duke@435 | 3034 | "addr must be page aligned"); |
duke@435 | 3035 | int retVal = mprotect(addr, bytes, prot); |
duke@435 | 3036 | return retVal == 0; |
duke@435 | 3037 | } |
duke@435 | 3038 | |
coleenp@672 | 3039 | // Protect memory (Used to pass readonly pages through |
duke@435 | 3040 | // JNI GetArray<type>Elements with empty arrays.) |
coleenp@912 | 3041 | // Also, used for serialization page and for compressed oops null pointer |
coleenp@912 | 3042 | // checking. |
coleenp@672 | 3043 | bool os::protect_memory(char* addr, size_t bytes, ProtType prot, |
coleenp@672 | 3044 | bool is_committed) { |
coleenp@672 | 3045 | unsigned int p = 0; |
coleenp@672 | 3046 | switch (prot) { |
coleenp@672 | 3047 | case MEM_PROT_NONE: p = PROT_NONE; break; |
coleenp@672 | 3048 | case MEM_PROT_READ: p = PROT_READ; break; |
coleenp@672 | 3049 | case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break; |
coleenp@672 | 3050 | case MEM_PROT_RWX: p = PROT_READ|PROT_WRITE|PROT_EXEC; break; |
coleenp@672 | 3051 | default: |
coleenp@672 | 3052 | ShouldNotReachHere(); |
coleenp@672 | 3053 | } |
coleenp@672 | 3054 | // is_committed is unused. |
coleenp@672 | 3055 | return solaris_mprotect(addr, bytes, p); |
duke@435 | 3056 | } |
duke@435 | 3057 | |
duke@435 | 3058 | // guard_memory and unguard_memory only happens within stack guard pages. |
duke@435 | 3059 | // Since ISM pertains only to the heap, guard and unguard memory should not |
duke@435 | 3060 | /// happen with an ISM region. |
duke@435 | 3061 | bool os::guard_memory(char* addr, size_t bytes) { |
duke@435 | 3062 | return solaris_mprotect(addr, bytes, PROT_NONE); |
duke@435 | 3063 | } |
duke@435 | 3064 | |
duke@435 | 3065 | bool os::unguard_memory(char* addr, size_t bytes) { |
coleenp@912 | 3066 | return solaris_mprotect(addr, bytes, PROT_READ|PROT_WRITE); |
duke@435 | 3067 | } |
duke@435 | 3068 | |
duke@435 | 3069 | // Large page support |
duke@435 | 3070 | |
duke@435 | 3071 | // UseLargePages is the master flag to enable/disable large page memory. |
duke@435 | 3072 | // UseMPSS and UseISM are supported for compatibility reasons. Their combined |
duke@435 | 3073 | // effects can be described in the following table: |
duke@435 | 3074 | // |
duke@435 | 3075 | // UseLargePages UseMPSS UseISM |
duke@435 | 3076 | // false * * => UseLargePages is the master switch, turning |
duke@435 | 3077 | // it off will turn off both UseMPSS and |
duke@435 | 3078 | // UseISM. VM will not use large page memory |
duke@435 | 3079 | // regardless the settings of UseMPSS/UseISM. |
duke@435 | 3080 | // true false false => Unless future Solaris provides other |
duke@435 | 3081 | // mechanism to use large page memory, this |
duke@435 | 3082 | // combination is equivalent to -UseLargePages, |
duke@435 | 3083 | // VM will not use large page memory |
duke@435 | 3084 | // true true false => JVM will use MPSS for large page memory. |
duke@435 | 3085 | // This is the default behavior. |
duke@435 | 3086 | // true false true => JVM will use ISM for large page memory. |
duke@435 | 3087 | // true true true => JVM will use ISM if it is available. |
duke@435 | 3088 | // Otherwise, JVM will fall back to MPSS. |
duke@435 | 3089 | // Becaues ISM is now available on all |
duke@435 | 3090 | // supported Solaris versions, this combination |
duke@435 | 3091 | // is equivalent to +UseISM -UseMPSS. |
duke@435 | 3092 | |
duke@435 | 3093 | typedef int (*getpagesizes_func_type) (size_t[], int); |
duke@435 | 3094 | static size_t _large_page_size = 0; |
duke@435 | 3095 | |
duke@435 | 3096 | bool os::Solaris::ism_sanity_check(bool warn, size_t * page_size) { |
duke@435 | 3097 | // x86 uses either 2M or 4M page, depending on whether PAE (Physical Address |
duke@435 | 3098 | // Extensions) mode is enabled. AMD64/EM64T uses 2M page in 64bit mode. Sparc |
duke@435 | 3099 | // can support multiple page sizes. |
duke@435 | 3100 | |
duke@435 | 3101 | // Don't bother to probe page size because getpagesizes() comes with MPSS. |
duke@435 | 3102 | // ISM is only recommended on old Solaris where there is no MPSS support. |
duke@435 | 3103 | // Simply choose a conservative value as default. |
duke@435 | 3104 | *page_size = LargePageSizeInBytes ? LargePageSizeInBytes : |
duke@435 | 3105 | SPARC_ONLY(4 * M) IA32_ONLY(4 * M) AMD64_ONLY(2 * M); |
duke@435 | 3106 | |
duke@435 | 3107 | // ISM is available on all supported Solaris versions |
duke@435 | 3108 | return true; |
duke@435 | 3109 | } |
duke@435 | 3110 | |
duke@435 | 3111 | // Insertion sort for small arrays (descending order). |
duke@435 | 3112 | static void insertion_sort_descending(size_t* array, int len) { |
duke@435 | 3113 | for (int i = 0; i < len; i++) { |
duke@435 | 3114 | size_t val = array[i]; |
duke@435 | 3115 | for (size_t key = i; key > 0 && array[key - 1] < val; --key) { |
duke@435 | 3116 | size_t tmp = array[key]; |
duke@435 | 3117 | array[key] = array[key - 1]; |
duke@435 | 3118 | array[key - 1] = tmp; |
duke@435 | 3119 | } |
duke@435 | 3120 | } |
duke@435 | 3121 | } |
duke@435 | 3122 | |
duke@435 | 3123 | bool os::Solaris::mpss_sanity_check(bool warn, size_t * page_size) { |
duke@435 | 3124 | getpagesizes_func_type getpagesizes_func = |
duke@435 | 3125 | CAST_TO_FN_PTR(getpagesizes_func_type, dlsym(RTLD_DEFAULT, "getpagesizes")); |
duke@435 | 3126 | if (getpagesizes_func == NULL) { |
duke@435 | 3127 | if (warn) { |
duke@435 | 3128 | warning("MPSS is not supported by the operating system."); |
duke@435 | 3129 | } |
duke@435 | 3130 | return false; |
duke@435 | 3131 | } |
duke@435 | 3132 | |
duke@435 | 3133 | const unsigned int usable_count = VM_Version::page_size_count(); |
duke@435 | 3134 | if (usable_count == 1) { |
duke@435 | 3135 | return false; |
duke@435 | 3136 | } |
duke@435 | 3137 | |
duke@435 | 3138 | // Fill the array of page sizes. |
duke@435 | 3139 | int n = getpagesizes_func(_page_sizes, page_sizes_max); |
duke@435 | 3140 | assert(n > 0, "Solaris bug?"); |
duke@435 | 3141 | if (n == page_sizes_max) { |
duke@435 | 3142 | // Add a sentinel value (necessary only if the array was completely filled |
duke@435 | 3143 | // since it is static (zeroed at initialization)). |
duke@435 | 3144 | _page_sizes[--n] = 0; |
duke@435 | 3145 | DEBUG_ONLY(warning("increase the size of the os::_page_sizes array.");) |
duke@435 | 3146 | } |
duke@435 | 3147 | assert(_page_sizes[n] == 0, "missing sentinel"); |
duke@435 | 3148 | |
duke@435 | 3149 | if (n == 1) return false; // Only one page size available. |
duke@435 | 3150 | |
duke@435 | 3151 | // Skip sizes larger than 4M (or LargePageSizeInBytes if it was set) and |
duke@435 | 3152 | // select up to usable_count elements. First sort the array, find the first |
duke@435 | 3153 | // acceptable value, then copy the usable sizes to the top of the array and |
duke@435 | 3154 | // trim the rest. Make sure to include the default page size :-). |
duke@435 | 3155 | // |
duke@435 | 3156 | // A better policy could get rid of the 4M limit by taking the sizes of the |
duke@435 | 3157 | // important VM memory regions (java heap and possibly the code cache) into |
duke@435 | 3158 | // account. |
duke@435 | 3159 | insertion_sort_descending(_page_sizes, n); |
duke@435 | 3160 | const size_t size_limit = |
duke@435 | 3161 | FLAG_IS_DEFAULT(LargePageSizeInBytes) ? 4 * M : LargePageSizeInBytes; |
duke@435 | 3162 | int beg; |
duke@435 | 3163 | for (beg = 0; beg < n && _page_sizes[beg] > size_limit; ++beg) /* empty */ ; |
duke@435 | 3164 | const int end = MIN2((int)usable_count, n) - 1; |
duke@435 | 3165 | for (int cur = 0; cur < end; ++cur, ++beg) { |
duke@435 | 3166 | _page_sizes[cur] = _page_sizes[beg]; |
duke@435 | 3167 | } |
duke@435 | 3168 | _page_sizes[end] = vm_page_size(); |
duke@435 | 3169 | _page_sizes[end + 1] = 0; |
duke@435 | 3170 | |
duke@435 | 3171 | if (_page_sizes[end] > _page_sizes[end - 1]) { |
duke@435 | 3172 | // Default page size is not the smallest; sort again. |
duke@435 | 3173 | insertion_sort_descending(_page_sizes, end + 1); |
duke@435 | 3174 | } |
duke@435 | 3175 | *page_size = _page_sizes[0]; |
duke@435 | 3176 | |
duke@435 | 3177 | return true; |
duke@435 | 3178 | } |
duke@435 | 3179 | |
duke@435 | 3180 | bool os::large_page_init() { |
duke@435 | 3181 | if (!UseLargePages) { |
duke@435 | 3182 | UseISM = false; |
duke@435 | 3183 | UseMPSS = false; |
duke@435 | 3184 | return false; |
duke@435 | 3185 | } |
duke@435 | 3186 | |
duke@435 | 3187 | // print a warning if any large page related flag is specified on command line |
duke@435 | 3188 | bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) || |
duke@435 | 3189 | !FLAG_IS_DEFAULT(UseISM) || |
duke@435 | 3190 | !FLAG_IS_DEFAULT(UseMPSS) || |
duke@435 | 3191 | !FLAG_IS_DEFAULT(LargePageSizeInBytes); |
duke@435 | 3192 | UseISM = UseISM && |
duke@435 | 3193 | Solaris::ism_sanity_check(warn_on_failure, &_large_page_size); |
duke@435 | 3194 | if (UseISM) { |
duke@435 | 3195 | // ISM disables MPSS to be compatible with old JDK behavior |
duke@435 | 3196 | UseMPSS = false; |
jcoomes@514 | 3197 | _page_sizes[0] = _large_page_size; |
jcoomes@514 | 3198 | _page_sizes[1] = vm_page_size(); |
duke@435 | 3199 | } |
duke@435 | 3200 | |
duke@435 | 3201 | UseMPSS = UseMPSS && |
duke@435 | 3202 | Solaris::mpss_sanity_check(warn_on_failure, &_large_page_size); |
duke@435 | 3203 | |
duke@435 | 3204 | UseLargePages = UseISM || UseMPSS; |
duke@435 | 3205 | return UseLargePages; |
duke@435 | 3206 | } |
duke@435 | 3207 | |
duke@435 | 3208 | bool os::Solaris::set_mpss_range(caddr_t start, size_t bytes, size_t align) { |
duke@435 | 3209 | // Signal to OS that we want large pages for addresses |
duke@435 | 3210 | // from addr, addr + bytes |
duke@435 | 3211 | struct memcntl_mha mpss_struct; |
duke@435 | 3212 | mpss_struct.mha_cmd = MHA_MAPSIZE_VA; |
duke@435 | 3213 | mpss_struct.mha_pagesize = align; |
duke@435 | 3214 | mpss_struct.mha_flags = 0; |
duke@435 | 3215 | if (memcntl(start, bytes, MC_HAT_ADVISE, |
duke@435 | 3216 | (caddr_t) &mpss_struct, 0, 0) < 0) { |
duke@435 | 3217 | debug_only(warning("Attempt to use MPSS failed.")); |
duke@435 | 3218 | return false; |
duke@435 | 3219 | } |
duke@435 | 3220 | return true; |
duke@435 | 3221 | } |
duke@435 | 3222 | |
duke@435 | 3223 | char* os::reserve_memory_special(size_t bytes) { |
duke@435 | 3224 | assert(UseLargePages && UseISM, "only for ISM large pages"); |
duke@435 | 3225 | |
duke@435 | 3226 | size_t size = bytes; |
duke@435 | 3227 | char* retAddr = NULL; |
duke@435 | 3228 | int shmid; |
duke@435 | 3229 | key_t ismKey; |
duke@435 | 3230 | |
duke@435 | 3231 | bool warn_on_failure = UseISM && |
duke@435 | 3232 | (!FLAG_IS_DEFAULT(UseLargePages) || |
duke@435 | 3233 | !FLAG_IS_DEFAULT(UseISM) || |
duke@435 | 3234 | !FLAG_IS_DEFAULT(LargePageSizeInBytes) |
duke@435 | 3235 | ); |
duke@435 | 3236 | char msg[128]; |
duke@435 | 3237 | |
duke@435 | 3238 | ismKey = IPC_PRIVATE; |
duke@435 | 3239 | |
duke@435 | 3240 | // Create a large shared memory region to attach to based on size. |
duke@435 | 3241 | // Currently, size is the total size of the heap |
duke@435 | 3242 | shmid = shmget(ismKey, size, SHM_R | SHM_W | IPC_CREAT); |
duke@435 | 3243 | if (shmid == -1){ |
duke@435 | 3244 | if (warn_on_failure) { |
duke@435 | 3245 | jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno); |
duke@435 | 3246 | warning(msg); |
duke@435 | 3247 | } |
duke@435 | 3248 | return NULL; |
duke@435 | 3249 | } |
duke@435 | 3250 | |
duke@435 | 3251 | // Attach to the region |
duke@435 | 3252 | retAddr = (char *) shmat(shmid, 0, SHM_SHARE_MMU | SHM_R | SHM_W); |
duke@435 | 3253 | int err = errno; |
duke@435 | 3254 | |
duke@435 | 3255 | // Remove shmid. If shmat() is successful, the actual shared memory segment |
duke@435 | 3256 | // will be deleted when it's detached by shmdt() or when the process |
duke@435 | 3257 | // terminates. If shmat() is not successful this will remove the shared |
duke@435 | 3258 | // segment immediately. |
duke@435 | 3259 | shmctl(shmid, IPC_RMID, NULL); |
duke@435 | 3260 | |
duke@435 | 3261 | if (retAddr == (char *) -1) { |
duke@435 | 3262 | if (warn_on_failure) { |
duke@435 | 3263 | jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err); |
duke@435 | 3264 | warning(msg); |
duke@435 | 3265 | } |
duke@435 | 3266 | return NULL; |
duke@435 | 3267 | } |
duke@435 | 3268 | |
duke@435 | 3269 | return retAddr; |
duke@435 | 3270 | } |
duke@435 | 3271 | |
duke@435 | 3272 | bool os::release_memory_special(char* base, size_t bytes) { |
duke@435 | 3273 | // detaching the SHM segment will also delete it, see reserve_memory_special() |
duke@435 | 3274 | int rslt = shmdt(base); |
duke@435 | 3275 | return rslt == 0; |
duke@435 | 3276 | } |
duke@435 | 3277 | |
duke@435 | 3278 | size_t os::large_page_size() { |
duke@435 | 3279 | return _large_page_size; |
duke@435 | 3280 | } |
duke@435 | 3281 | |
duke@435 | 3282 | // MPSS allows application to commit large page memory on demand; with ISM |
duke@435 | 3283 | // the entire memory region must be allocated as shared memory. |
duke@435 | 3284 | bool os::can_commit_large_page_memory() { |
duke@435 | 3285 | return UseISM ? false : true; |
duke@435 | 3286 | } |
duke@435 | 3287 | |
jcoomes@514 | 3288 | bool os::can_execute_large_page_memory() { |
jcoomes@514 | 3289 | return UseISM ? false : true; |
jcoomes@514 | 3290 | } |
jcoomes@514 | 3291 | |
duke@435 | 3292 | static int os_sleep(jlong millis, bool interruptible) { |
duke@435 | 3293 | const jlong limit = INT_MAX; |
duke@435 | 3294 | jlong prevtime; |
duke@435 | 3295 | int res; |
duke@435 | 3296 | |
duke@435 | 3297 | while (millis > limit) { |
duke@435 | 3298 | if ((res = os_sleep(limit, interruptible)) != OS_OK) |
duke@435 | 3299 | return res; |
duke@435 | 3300 | millis -= limit; |
duke@435 | 3301 | } |
duke@435 | 3302 | |
duke@435 | 3303 | // Restart interrupted polls with new parameters until the proper delay |
duke@435 | 3304 | // has been completed. |
duke@435 | 3305 | |
duke@435 | 3306 | prevtime = getTimeMillis(); |
duke@435 | 3307 | |
duke@435 | 3308 | while (millis > 0) { |
duke@435 | 3309 | jlong newtime; |
duke@435 | 3310 | |
duke@435 | 3311 | if (!interruptible) { |
duke@435 | 3312 | // Following assert fails for os::yield_all: |
duke@435 | 3313 | // assert(!thread->is_Java_thread(), "must not be java thread"); |
duke@435 | 3314 | res = poll(NULL, 0, millis); |
duke@435 | 3315 | } else { |
duke@435 | 3316 | JavaThread *jt = JavaThread::current(); |
duke@435 | 3317 | |
duke@435 | 3318 | INTERRUPTIBLE_NORESTART_VM_ALWAYS(poll(NULL, 0, millis), res, jt, |
duke@435 | 3319 | os::Solaris::clear_interrupted); |
duke@435 | 3320 | } |
duke@435 | 3321 | |
duke@435 | 3322 | // INTERRUPTIBLE_NORESTART_VM_ALWAYS returns res == OS_INTRPT for |
duke@435 | 3323 | // thread.Interrupt. |
duke@435 | 3324 | |
duke@435 | 3325 | if((res == OS_ERR) && (errno == EINTR)) { |
duke@435 | 3326 | newtime = getTimeMillis(); |
duke@435 | 3327 | assert(newtime >= prevtime, "time moving backwards"); |
duke@435 | 3328 | /* Doing prevtime and newtime in microseconds doesn't help precision, |
duke@435 | 3329 | and trying to round up to avoid lost milliseconds can result in a |
duke@435 | 3330 | too-short delay. */ |
duke@435 | 3331 | millis -= newtime - prevtime; |
duke@435 | 3332 | if(millis <= 0) |
duke@435 | 3333 | return OS_OK; |
duke@435 | 3334 | prevtime = newtime; |
duke@435 | 3335 | } else |
duke@435 | 3336 | return res; |
duke@435 | 3337 | } |
duke@435 | 3338 | |
duke@435 | 3339 | return OS_OK; |
duke@435 | 3340 | } |
duke@435 | 3341 | |
duke@435 | 3342 | // Read calls from inside the vm need to perform state transitions |
duke@435 | 3343 | size_t os::read(int fd, void *buf, unsigned int nBytes) { |
duke@435 | 3344 | INTERRUPTIBLE_RETURN_INT_VM(::read(fd, buf, nBytes), os::Solaris::clear_interrupted); |
duke@435 | 3345 | } |
duke@435 | 3346 | |
duke@435 | 3347 | int os::sleep(Thread* thread, jlong millis, bool interruptible) { |
duke@435 | 3348 | assert(thread == Thread::current(), "thread consistency check"); |
duke@435 | 3349 | |
duke@435 | 3350 | // TODO-FIXME: this should be removed. |
duke@435 | 3351 | // On Solaris machines (especially 2.5.1) we found that sometimes the VM gets into a live lock |
duke@435 | 3352 | // situation with a JavaThread being starved out of a lwp. The kernel doesn't seem to generate |
duke@435 | 3353 | // a SIGWAITING signal which would enable the threads library to create a new lwp for the starving |
duke@435 | 3354 | // thread. We suspect that because the Watcher thread keeps waking up at periodic intervals the kernel |
duke@435 | 3355 | // is fooled into believing that the system is making progress. In the code below we block the |
duke@435 | 3356 | // the watcher thread while safepoint is in progress so that it would not appear as though the |
duke@435 | 3357 | // system is making progress. |
duke@435 | 3358 | if (!Solaris::T2_libthread() && |
duke@435 | 3359 | thread->is_Watcher_thread() && SafepointSynchronize::is_synchronizing() && !Arguments::has_profile()) { |
duke@435 | 3360 | // We now try to acquire the threads lock. Since this lock is held by the VM thread during |
duke@435 | 3361 | // the entire safepoint, the watcher thread will line up here during the safepoint. |
duke@435 | 3362 | Threads_lock->lock_without_safepoint_check(); |
duke@435 | 3363 | Threads_lock->unlock(); |
duke@435 | 3364 | } |
duke@435 | 3365 | |
duke@435 | 3366 | if (thread->is_Java_thread()) { |
duke@435 | 3367 | // This is a JavaThread so we honor the _thread_blocked protocol |
duke@435 | 3368 | // even for sleeps of 0 milliseconds. This was originally done |
duke@435 | 3369 | // as a workaround for bug 4338139. However, now we also do it |
duke@435 | 3370 | // to honor the suspend-equivalent protocol. |
duke@435 | 3371 | |
duke@435 | 3372 | JavaThread *jt = (JavaThread *) thread; |
duke@435 | 3373 | ThreadBlockInVM tbivm(jt); |
duke@435 | 3374 | |
duke@435 | 3375 | jt->set_suspend_equivalent(); |
duke@435 | 3376 | // cleared by handle_special_suspend_equivalent_condition() or |
duke@435 | 3377 | // java_suspend_self() via check_and_wait_while_suspended() |
duke@435 | 3378 | |
duke@435 | 3379 | int ret_code; |
duke@435 | 3380 | if (millis <= 0) { |
duke@435 | 3381 | thr_yield(); |
duke@435 | 3382 | ret_code = 0; |
duke@435 | 3383 | } else { |
duke@435 | 3384 | // The original sleep() implementation did not create an |
duke@435 | 3385 | // OSThreadWaitState helper for sleeps of 0 milliseconds. |
duke@435 | 3386 | // I'm preserving that decision for now. |
duke@435 | 3387 | OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */); |
duke@435 | 3388 | |
duke@435 | 3389 | ret_code = os_sleep(millis, interruptible); |
duke@435 | 3390 | } |
duke@435 | 3391 | |
duke@435 | 3392 | // were we externally suspended while we were waiting? |
duke@435 | 3393 | jt->check_and_wait_while_suspended(); |
duke@435 | 3394 | |
duke@435 | 3395 | return ret_code; |
duke@435 | 3396 | } |
duke@435 | 3397 | |
duke@435 | 3398 | // non-JavaThread from this point on: |
duke@435 | 3399 | |
duke@435 | 3400 | if (millis <= 0) { |
duke@435 | 3401 | thr_yield(); |
duke@435 | 3402 | return 0; |
duke@435 | 3403 | } |
duke@435 | 3404 | |
duke@435 | 3405 | OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); |
duke@435 | 3406 | |
duke@435 | 3407 | return os_sleep(millis, interruptible); |
duke@435 | 3408 | } |
duke@435 | 3409 | |
duke@435 | 3410 | int os::naked_sleep() { |
duke@435 | 3411 | // %% make the sleep time an integer flag. for now use 1 millisec. |
duke@435 | 3412 | return os_sleep(1, false); |
duke@435 | 3413 | } |
duke@435 | 3414 | |
duke@435 | 3415 | // Sleep forever; naked call to OS-specific sleep; use with CAUTION |
duke@435 | 3416 | void os::infinite_sleep() { |
duke@435 | 3417 | while (true) { // sleep forever ... |
duke@435 | 3418 | ::sleep(100); // ... 100 seconds at a time |
duke@435 | 3419 | } |
duke@435 | 3420 | } |
duke@435 | 3421 | |
duke@435 | 3422 | // Used to convert frequent JVM_Yield() to nops |
duke@435 | 3423 | bool os::dont_yield() { |
duke@435 | 3424 | if (DontYieldALot) { |
duke@435 | 3425 | static hrtime_t last_time = 0; |
duke@435 | 3426 | hrtime_t diff = getTimeNanos() - last_time; |
duke@435 | 3427 | |
duke@435 | 3428 | if (diff < DontYieldALotInterval * 1000000) |
duke@435 | 3429 | return true; |
duke@435 | 3430 | |
duke@435 | 3431 | last_time += diff; |
duke@435 | 3432 | |
duke@435 | 3433 | return false; |
duke@435 | 3434 | } |
duke@435 | 3435 | else { |
duke@435 | 3436 | return false; |
duke@435 | 3437 | } |
duke@435 | 3438 | } |
duke@435 | 3439 | |
duke@435 | 3440 | // Caveat: Solaris os::yield() causes a thread-state transition whereas |
duke@435 | 3441 | // the linux and win32 implementations do not. This should be checked. |
duke@435 | 3442 | |
duke@435 | 3443 | void os::yield() { |
duke@435 | 3444 | // Yields to all threads with same or greater priority |
duke@435 | 3445 | os::sleep(Thread::current(), 0, false); |
duke@435 | 3446 | } |
duke@435 | 3447 | |
duke@435 | 3448 | // Note that yield semantics are defined by the scheduling class to which |
duke@435 | 3449 | // the thread currently belongs. Typically, yield will _not yield to |
duke@435 | 3450 | // other equal or higher priority threads that reside on the dispatch queues |
duke@435 | 3451 | // of other CPUs. |
duke@435 | 3452 | |
duke@435 | 3453 | os::YieldResult os::NakedYield() { thr_yield(); return os::YIELD_UNKNOWN; } |
duke@435 | 3454 | |
duke@435 | 3455 | |
duke@435 | 3456 | // On Solaris we found that yield_all doesn't always yield to all other threads. |
duke@435 | 3457 | // There have been cases where there is a thread ready to execute but it doesn't |
duke@435 | 3458 | // get an lwp as the VM thread continues to spin with sleeps of 1 millisecond. |
duke@435 | 3459 | // The 1 millisecond wait doesn't seem long enough for the kernel to issue a |
duke@435 | 3460 | // SIGWAITING signal which will cause a new lwp to be created. So we count the |
duke@435 | 3461 | // number of times yield_all is called in the one loop and increase the sleep |
duke@435 | 3462 | // time after 8 attempts. If this fails too we increase the concurrency level |
duke@435 | 3463 | // so that the starving thread would get an lwp |
duke@435 | 3464 | |
duke@435 | 3465 | void os::yield_all(int attempts) { |
duke@435 | 3466 | // Yields to all threads, including threads with lower priorities |
duke@435 | 3467 | if (attempts == 0) { |
duke@435 | 3468 | os::sleep(Thread::current(), 1, false); |
duke@435 | 3469 | } else { |
duke@435 | 3470 | int iterations = attempts % 30; |
duke@435 | 3471 | if (iterations == 0 && !os::Solaris::T2_libthread()) { |
duke@435 | 3472 | // thr_setconcurrency and _getconcurrency make sense only under T1. |
duke@435 | 3473 | int noofLWPS = thr_getconcurrency(); |
duke@435 | 3474 | if (noofLWPS < (Threads::number_of_threads() + 2)) { |
duke@435 | 3475 | thr_setconcurrency(thr_getconcurrency() + 1); |
duke@435 | 3476 | } |
duke@435 | 3477 | } else if (iterations < 25) { |
duke@435 | 3478 | os::sleep(Thread::current(), 1, false); |
duke@435 | 3479 | } else { |
duke@435 | 3480 | os::sleep(Thread::current(), 10, false); |
duke@435 | 3481 | } |
duke@435 | 3482 | } |
duke@435 | 3483 | } |
duke@435 | 3484 | |
duke@435 | 3485 | // Called from the tight loops to possibly influence time-sharing heuristics |
duke@435 | 3486 | void os::loop_breaker(int attempts) { |
duke@435 | 3487 | os::yield_all(attempts); |
duke@435 | 3488 | } |
duke@435 | 3489 | |
duke@435 | 3490 | |
duke@435 | 3491 | // Interface for setting lwp priorities. If we are using T2 libthread, |
duke@435 | 3492 | // which forces the use of BoundThreads or we manually set UseBoundThreads, |
duke@435 | 3493 | // all of our threads will be assigned to real lwp's. Using the thr_setprio |
duke@435 | 3494 | // function is meaningless in this mode so we must adjust the real lwp's priority |
duke@435 | 3495 | // The routines below implement the getting and setting of lwp priorities. |
duke@435 | 3496 | // |
duke@435 | 3497 | // Note: There are three priority scales used on Solaris. Java priotities |
duke@435 | 3498 | // which range from 1 to 10, libthread "thr_setprio" scale which range |
duke@435 | 3499 | // from 0 to 127, and the current scheduling class of the process we |
duke@435 | 3500 | // are running in. This is typically from -60 to +60. |
duke@435 | 3501 | // The setting of the lwp priorities in done after a call to thr_setprio |
duke@435 | 3502 | // so Java priorities are mapped to libthread priorities and we map from |
duke@435 | 3503 | // the latter to lwp priorities. We don't keep priorities stored in |
duke@435 | 3504 | // Java priorities since some of our worker threads want to set priorities |
duke@435 | 3505 | // higher than all Java threads. |
duke@435 | 3506 | // |
duke@435 | 3507 | // For related information: |
duke@435 | 3508 | // (1) man -s 2 priocntl |
duke@435 | 3509 | // (2) man -s 4 priocntl |
duke@435 | 3510 | // (3) man dispadmin |
duke@435 | 3511 | // = librt.so |
duke@435 | 3512 | // = libthread/common/rtsched.c - thrp_setlwpprio(). |
duke@435 | 3513 | // = ps -cL <pid> ... to validate priority. |
duke@435 | 3514 | // = sched_get_priority_min and _max |
duke@435 | 3515 | // pthread_create |
duke@435 | 3516 | // sched_setparam |
duke@435 | 3517 | // pthread_setschedparam |
duke@435 | 3518 | // |
duke@435 | 3519 | // Assumptions: |
duke@435 | 3520 | // + We assume that all threads in the process belong to the same |
duke@435 | 3521 | // scheduling class. IE. an homogenous process. |
duke@435 | 3522 | // + Must be root or in IA group to change change "interactive" attribute. |
duke@435 | 3523 | // Priocntl() will fail silently. The only indication of failure is when |
duke@435 | 3524 | // we read-back the value and notice that it hasn't changed. |
duke@435 | 3525 | // + Interactive threads enter the runq at the head, non-interactive at the tail. |
duke@435 | 3526 | // + For RT, change timeslice as well. Invariant: |
duke@435 | 3527 | // constant "priority integral" |
duke@435 | 3528 | // Konst == TimeSlice * (60-Priority) |
duke@435 | 3529 | // Given a priority, compute appropriate timeslice. |
duke@435 | 3530 | // + Higher numerical values have higher priority. |
duke@435 | 3531 | |
duke@435 | 3532 | // sched class attributes |
duke@435 | 3533 | typedef struct { |
duke@435 | 3534 | int schedPolicy; // classID |
duke@435 | 3535 | int maxPrio; |
duke@435 | 3536 | int minPrio; |
duke@435 | 3537 | } SchedInfo; |
duke@435 | 3538 | |
duke@435 | 3539 | |
duke@435 | 3540 | static SchedInfo tsLimits, iaLimits, rtLimits; |
duke@435 | 3541 | |
duke@435 | 3542 | #ifdef ASSERT |
duke@435 | 3543 | static int ReadBackValidate = 1; |
duke@435 | 3544 | #endif |
duke@435 | 3545 | static int myClass = 0; |
duke@435 | 3546 | static int myMin = 0; |
duke@435 | 3547 | static int myMax = 0; |
duke@435 | 3548 | static int myCur = 0; |
duke@435 | 3549 | static bool priocntl_enable = false; |
duke@435 | 3550 | |
duke@435 | 3551 | |
duke@435 | 3552 | // Call the version of priocntl suitable for all supported versions |
duke@435 | 3553 | // of Solaris. We need to call through this wrapper so that we can |
duke@435 | 3554 | // build on Solaris 9 and run on Solaris 8, 9 and 10. |
duke@435 | 3555 | // |
duke@435 | 3556 | // This code should be removed if we ever stop supporting Solaris 8 |
duke@435 | 3557 | // and earlier releases. |
duke@435 | 3558 | |
duke@435 | 3559 | static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg); |
duke@435 | 3560 | typedef long (*priocntl_type)(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg); |
duke@435 | 3561 | static priocntl_type priocntl_ptr = priocntl_stub; |
duke@435 | 3562 | |
duke@435 | 3563 | // Stub to set the value of the real pointer, and then call the real |
duke@435 | 3564 | // function. |
duke@435 | 3565 | |
duke@435 | 3566 | static long priocntl_stub(int pcver, idtype_t idtype, id_t id, int cmd, caddr_t arg) { |
duke@435 | 3567 | // Try Solaris 8- name only. |
duke@435 | 3568 | priocntl_type tmp = (priocntl_type)dlsym(RTLD_DEFAULT, "__priocntl"); |
duke@435 | 3569 | guarantee(tmp != NULL, "priocntl function not found."); |
duke@435 | 3570 | priocntl_ptr = tmp; |
duke@435 | 3571 | return (*priocntl_ptr)(PC_VERSION, idtype, id, cmd, arg); |
duke@435 | 3572 | } |
duke@435 | 3573 | |
duke@435 | 3574 | |
duke@435 | 3575 | // lwp_priocntl_init |
duke@435 | 3576 | // |
duke@435 | 3577 | // Try to determine the priority scale for our process. |
duke@435 | 3578 | // |
duke@435 | 3579 | // Return errno or 0 if OK. |
duke@435 | 3580 | // |
duke@435 | 3581 | static |
duke@435 | 3582 | int lwp_priocntl_init () |
duke@435 | 3583 | { |
duke@435 | 3584 | int rslt; |
duke@435 | 3585 | pcinfo_t ClassInfo; |
duke@435 | 3586 | pcparms_t ParmInfo; |
duke@435 | 3587 | int i; |
duke@435 | 3588 | |
duke@435 | 3589 | if (!UseThreadPriorities) return 0; |
duke@435 | 3590 | |
duke@435 | 3591 | // We are using Bound threads, we need to determine our priority ranges |
duke@435 | 3592 | if (os::Solaris::T2_libthread() || UseBoundThreads) { |
duke@435 | 3593 | // If ThreadPriorityPolicy is 1, switch tables |
duke@435 | 3594 | if (ThreadPriorityPolicy == 1) { |
duke@435 | 3595 | for (i = 0 ; i < MaxPriority+1; i++) |
duke@435 | 3596 | os::java_to_os_priority[i] = prio_policy1[i]; |
duke@435 | 3597 | } |
duke@435 | 3598 | } |
duke@435 | 3599 | // Not using Bound Threads, set to ThreadPolicy 1 |
duke@435 | 3600 | else { |
duke@435 | 3601 | for ( i = 0 ; i < MaxPriority+1; i++ ) { |
duke@435 | 3602 | os::java_to_os_priority[i] = prio_policy1[i]; |
duke@435 | 3603 | } |
duke@435 | 3604 | return 0; |
duke@435 | 3605 | } |
duke@435 | 3606 | |
duke@435 | 3607 | |
duke@435 | 3608 | // Get IDs for a set of well-known scheduling classes. |
duke@435 | 3609 | // TODO-FIXME: GETCLINFO returns the current # of classes in the |
duke@435 | 3610 | // the system. We should have a loop that iterates over the |
duke@435 | 3611 | // classID values, which are known to be "small" integers. |
duke@435 | 3612 | |
duke@435 | 3613 | strcpy(ClassInfo.pc_clname, "TS"); |
duke@435 | 3614 | ClassInfo.pc_cid = -1; |
duke@435 | 3615 | rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
duke@435 | 3616 | if (rslt < 0) return errno; |
duke@435 | 3617 | assert(ClassInfo.pc_cid != -1, "cid for TS class is -1"); |
duke@435 | 3618 | tsLimits.schedPolicy = ClassInfo.pc_cid; |
duke@435 | 3619 | tsLimits.maxPrio = ((tsinfo_t*)ClassInfo.pc_clinfo)->ts_maxupri; |
duke@435 | 3620 | tsLimits.minPrio = -tsLimits.maxPrio; |
duke@435 | 3621 | |
duke@435 | 3622 | strcpy(ClassInfo.pc_clname, "IA"); |
duke@435 | 3623 | ClassInfo.pc_cid = -1; |
duke@435 | 3624 | rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
duke@435 | 3625 | if (rslt < 0) return errno; |
duke@435 | 3626 | assert(ClassInfo.pc_cid != -1, "cid for IA class is -1"); |
duke@435 | 3627 | iaLimits.schedPolicy = ClassInfo.pc_cid; |
duke@435 | 3628 | iaLimits.maxPrio = ((iainfo_t*)ClassInfo.pc_clinfo)->ia_maxupri; |
duke@435 | 3629 | iaLimits.minPrio = -iaLimits.maxPrio; |
duke@435 | 3630 | |
duke@435 | 3631 | strcpy(ClassInfo.pc_clname, "RT"); |
duke@435 | 3632 | ClassInfo.pc_cid = -1; |
duke@435 | 3633 | rslt = (*priocntl_ptr)(PC_VERSION, P_ALL, 0, PC_GETCID, (caddr_t)&ClassInfo); |
duke@435 | 3634 | if (rslt < 0) return errno; |
duke@435 | 3635 | assert(ClassInfo.pc_cid != -1, "cid for RT class is -1"); |
duke@435 | 3636 | rtLimits.schedPolicy = ClassInfo.pc_cid; |
duke@435 | 3637 | rtLimits.maxPrio = ((rtinfo_t*)ClassInfo.pc_clinfo)->rt_maxpri; |
duke@435 | 3638 | rtLimits.minPrio = 0; |
duke@435 | 3639 | |
duke@435 | 3640 | |
duke@435 | 3641 | // Query our "current" scheduling class. |
duke@435 | 3642 | // This will normally be IA,TS or, rarely, RT. |
duke@435 | 3643 | memset (&ParmInfo, 0, sizeof(ParmInfo)); |
duke@435 | 3644 | ParmInfo.pc_cid = PC_CLNULL; |
duke@435 | 3645 | rslt = (*priocntl_ptr) (PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo ); |
duke@435 | 3646 | if ( rslt < 0 ) return errno; |
duke@435 | 3647 | myClass = ParmInfo.pc_cid; |
duke@435 | 3648 | |
duke@435 | 3649 | // We now know our scheduling classId, get specific information |
duke@435 | 3650 | // the class. |
duke@435 | 3651 | ClassInfo.pc_cid = myClass; |
duke@435 | 3652 | ClassInfo.pc_clname[0] = 0; |
duke@435 | 3653 | rslt = (*priocntl_ptr) (PC_VERSION, (idtype)0, 0, PC_GETCLINFO, (caddr_t)&ClassInfo ); |
duke@435 | 3654 | if ( rslt < 0 ) return errno; |
duke@435 | 3655 | |
duke@435 | 3656 | if (ThreadPriorityVerbose) |
duke@435 | 3657 | tty->print_cr ("lwp_priocntl_init: Class=%d(%s)...", myClass, ClassInfo.pc_clname); |
duke@435 | 3658 | |
duke@435 | 3659 | memset(&ParmInfo, 0, sizeof(pcparms_t)); |
duke@435 | 3660 | ParmInfo.pc_cid = PC_CLNULL; |
duke@435 | 3661 | rslt = (*priocntl_ptr)(PC_VERSION, P_PID, P_MYID, PC_GETPARMS, (caddr_t)&ParmInfo); |
duke@435 | 3662 | if (rslt < 0) return errno; |
duke@435 | 3663 | |
duke@435 | 3664 | if (ParmInfo.pc_cid == rtLimits.schedPolicy) { |
duke@435 | 3665 | myMin = rtLimits.minPrio; |
duke@435 | 3666 | myMax = rtLimits.maxPrio; |
duke@435 | 3667 | } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { |
duke@435 | 3668 | iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms; |
duke@435 | 3669 | myMin = iaLimits.minPrio; |
duke@435 | 3670 | myMax = iaLimits.maxPrio; |
duke@435 | 3671 | myMax = MIN2(myMax, (int)iaInfo->ia_uprilim); // clamp - restrict |
duke@435 | 3672 | } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { |
duke@435 | 3673 | tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms; |
duke@435 | 3674 | myMin = tsLimits.minPrio; |
duke@435 | 3675 | myMax = tsLimits.maxPrio; |
duke@435 | 3676 | myMax = MIN2(myMax, (int)tsInfo->ts_uprilim); // clamp - restrict |
duke@435 | 3677 | } else { |
duke@435 | 3678 | // No clue - punt |
duke@435 | 3679 | if (ThreadPriorityVerbose) |
duke@435 | 3680 | tty->print_cr ("Unknown scheduling class: %s ... \n", ClassInfo.pc_clname); |
duke@435 | 3681 | return EINVAL; // no clue, punt |
duke@435 | 3682 | } |
duke@435 | 3683 | |
duke@435 | 3684 | if (ThreadPriorityVerbose) |
duke@435 | 3685 | tty->print_cr ("Thread priority Range: [%d..%d]\n", myMin, myMax); |
duke@435 | 3686 | |
duke@435 | 3687 | priocntl_enable = true; // Enable changing priorities |
duke@435 | 3688 | return 0; |
duke@435 | 3689 | } |
duke@435 | 3690 | |
duke@435 | 3691 | #define IAPRI(x) ((iaparms_t *)((x).pc_clparms)) |
duke@435 | 3692 | #define RTPRI(x) ((rtparms_t *)((x).pc_clparms)) |
duke@435 | 3693 | #define TSPRI(x) ((tsparms_t *)((x).pc_clparms)) |
duke@435 | 3694 | |
duke@435 | 3695 | |
duke@435 | 3696 | // scale_to_lwp_priority |
duke@435 | 3697 | // |
duke@435 | 3698 | // Convert from the libthread "thr_setprio" scale to our current |
duke@435 | 3699 | // lwp scheduling class scale. |
duke@435 | 3700 | // |
duke@435 | 3701 | static |
duke@435 | 3702 | int scale_to_lwp_priority (int rMin, int rMax, int x) |
duke@435 | 3703 | { |
duke@435 | 3704 | int v; |
duke@435 | 3705 | |
duke@435 | 3706 | if (x == 127) return rMax; // avoid round-down |
duke@435 | 3707 | v = (((x*(rMax-rMin)))/128)+rMin; |
duke@435 | 3708 | return v; |
duke@435 | 3709 | } |
duke@435 | 3710 | |
duke@435 | 3711 | |
duke@435 | 3712 | // set_lwp_priority |
duke@435 | 3713 | // |
duke@435 | 3714 | // Set the priority of the lwp. This call should only be made |
duke@435 | 3715 | // when using bound threads (T2 threads are bound by default). |
duke@435 | 3716 | // |
duke@435 | 3717 | int set_lwp_priority (int ThreadID, int lwpid, int newPrio ) |
duke@435 | 3718 | { |
duke@435 | 3719 | int rslt; |
duke@435 | 3720 | int Actual, Expected, prv; |
duke@435 | 3721 | pcparms_t ParmInfo; // for GET-SET |
duke@435 | 3722 | #ifdef ASSERT |
duke@435 | 3723 | pcparms_t ReadBack; // for readback |
duke@435 | 3724 | #endif |
duke@435 | 3725 | |
duke@435 | 3726 | // Set priority via PC_GETPARMS, update, PC_SETPARMS |
duke@435 | 3727 | // Query current values. |
duke@435 | 3728 | // TODO: accelerate this by eliminating the PC_GETPARMS call. |
duke@435 | 3729 | // Cache "pcparms_t" in global ParmCache. |
duke@435 | 3730 | // TODO: elide set-to-same-value |
duke@435 | 3731 | |
duke@435 | 3732 | // If something went wrong on init, don't change priorities. |
duke@435 | 3733 | if ( !priocntl_enable ) { |
duke@435 | 3734 | if (ThreadPriorityVerbose) |
duke@435 | 3735 | tty->print_cr("Trying to set priority but init failed, ignoring"); |
duke@435 | 3736 | return EINVAL; |
duke@435 | 3737 | } |
duke@435 | 3738 | |
duke@435 | 3739 | |
duke@435 | 3740 | // If lwp hasn't started yet, just return |
duke@435 | 3741 | // the _start routine will call us again. |
duke@435 | 3742 | if ( lwpid <= 0 ) { |
duke@435 | 3743 | if (ThreadPriorityVerbose) { |
duke@435 | 3744 | tty->print_cr ("deferring the set_lwp_priority of thread " INTPTR_FORMAT " to %d, lwpid not set", |
duke@435 | 3745 | ThreadID, newPrio); |
duke@435 | 3746 | } |
duke@435 | 3747 | return 0; |
duke@435 | 3748 | } |
duke@435 | 3749 | |
duke@435 | 3750 | if (ThreadPriorityVerbose) { |
duke@435 | 3751 | tty->print_cr ("set_lwp_priority(" INTPTR_FORMAT "@" INTPTR_FORMAT " %d) ", |
duke@435 | 3752 | ThreadID, lwpid, newPrio); |
duke@435 | 3753 | } |
duke@435 | 3754 | |
duke@435 | 3755 | memset(&ParmInfo, 0, sizeof(pcparms_t)); |
duke@435 | 3756 | ParmInfo.pc_cid = PC_CLNULL; |
duke@435 | 3757 | rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ParmInfo); |
duke@435 | 3758 | if (rslt < 0) return errno; |
duke@435 | 3759 | |
duke@435 | 3760 | if (ParmInfo.pc_cid == rtLimits.schedPolicy) { |
duke@435 | 3761 | rtparms_t *rtInfo = (rtparms_t*)ParmInfo.pc_clparms; |
duke@435 | 3762 | rtInfo->rt_pri = scale_to_lwp_priority (rtLimits.minPrio, rtLimits.maxPrio, newPrio); |
duke@435 | 3763 | rtInfo->rt_tqsecs = RT_NOCHANGE; |
duke@435 | 3764 | rtInfo->rt_tqnsecs = RT_NOCHANGE; |
duke@435 | 3765 | if (ThreadPriorityVerbose) { |
duke@435 | 3766 | tty->print_cr("RT: %d->%d\n", newPrio, rtInfo->rt_pri); |
duke@435 | 3767 | } |
duke@435 | 3768 | } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { |
duke@435 | 3769 | iaparms_t *iaInfo = (iaparms_t*)ParmInfo.pc_clparms; |
duke@435 | 3770 | int maxClamped = MIN2(iaLimits.maxPrio, (int)iaInfo->ia_uprilim); |
duke@435 | 3771 | iaInfo->ia_upri = scale_to_lwp_priority(iaLimits.minPrio, maxClamped, newPrio); |
duke@435 | 3772 | iaInfo->ia_uprilim = IA_NOCHANGE; |
duke@435 | 3773 | iaInfo->ia_mode = IA_NOCHANGE; |
duke@435 | 3774 | if (ThreadPriorityVerbose) { |
duke@435 | 3775 | tty->print_cr ("IA: [%d...%d] %d->%d\n", |
duke@435 | 3776 | iaLimits.minPrio, maxClamped, newPrio, iaInfo->ia_upri); |
duke@435 | 3777 | } |
duke@435 | 3778 | } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { |
duke@435 | 3779 | tsparms_t *tsInfo = (tsparms_t*)ParmInfo.pc_clparms; |
duke@435 | 3780 | int maxClamped = MIN2(tsLimits.maxPrio, (int)tsInfo->ts_uprilim); |
duke@435 | 3781 | prv = tsInfo->ts_upri; |
duke@435 | 3782 | tsInfo->ts_upri = scale_to_lwp_priority(tsLimits.minPrio, maxClamped, newPrio); |
duke@435 | 3783 | tsInfo->ts_uprilim = IA_NOCHANGE; |
duke@435 | 3784 | if (ThreadPriorityVerbose) { |
duke@435 | 3785 | tty->print_cr ("TS: %d [%d...%d] %d->%d\n", |
duke@435 | 3786 | prv, tsLimits.minPrio, maxClamped, newPrio, tsInfo->ts_upri); |
duke@435 | 3787 | } |
duke@435 | 3788 | if (prv == tsInfo->ts_upri) return 0; |
duke@435 | 3789 | } else { |
duke@435 | 3790 | if ( ThreadPriorityVerbose ) { |
duke@435 | 3791 | tty->print_cr ("Unknown scheduling class\n"); |
duke@435 | 3792 | } |
duke@435 | 3793 | return EINVAL; // no clue, punt |
duke@435 | 3794 | } |
duke@435 | 3795 | |
duke@435 | 3796 | rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_SETPARMS, (caddr_t)&ParmInfo); |
duke@435 | 3797 | if (ThreadPriorityVerbose && rslt) { |
duke@435 | 3798 | tty->print_cr ("PC_SETPARMS ->%d %d\n", rslt, errno); |
duke@435 | 3799 | } |
duke@435 | 3800 | if (rslt < 0) return errno; |
duke@435 | 3801 | |
duke@435 | 3802 | #ifdef ASSERT |
duke@435 | 3803 | // Sanity check: read back what we just attempted to set. |
duke@435 | 3804 | // In theory it could have changed in the interim ... |
duke@435 | 3805 | // |
duke@435 | 3806 | // The priocntl system call is tricky. |
duke@435 | 3807 | // Sometimes it'll validate the priority value argument and |
duke@435 | 3808 | // return EINVAL if unhappy. At other times it fails silently. |
duke@435 | 3809 | // Readbacks are prudent. |
duke@435 | 3810 | |
duke@435 | 3811 | if (!ReadBackValidate) return 0; |
duke@435 | 3812 | |
duke@435 | 3813 | memset(&ReadBack, 0, sizeof(pcparms_t)); |
duke@435 | 3814 | ReadBack.pc_cid = PC_CLNULL; |
duke@435 | 3815 | rslt = (*priocntl_ptr)(PC_VERSION, P_LWPID, lwpid, PC_GETPARMS, (caddr_t)&ReadBack); |
duke@435 | 3816 | assert(rslt >= 0, "priocntl failed"); |
duke@435 | 3817 | Actual = Expected = 0xBAD; |
duke@435 | 3818 | assert(ParmInfo.pc_cid == ReadBack.pc_cid, "cid's don't match"); |
duke@435 | 3819 | if (ParmInfo.pc_cid == rtLimits.schedPolicy) { |
duke@435 | 3820 | Actual = RTPRI(ReadBack)->rt_pri; |
duke@435 | 3821 | Expected = RTPRI(ParmInfo)->rt_pri; |
duke@435 | 3822 | } else if (ParmInfo.pc_cid == iaLimits.schedPolicy) { |
duke@435 | 3823 | Actual = IAPRI(ReadBack)->ia_upri; |
duke@435 | 3824 | Expected = IAPRI(ParmInfo)->ia_upri; |
duke@435 | 3825 | } else if (ParmInfo.pc_cid == tsLimits.schedPolicy) { |
duke@435 | 3826 | Actual = TSPRI(ReadBack)->ts_upri; |
duke@435 | 3827 | Expected = TSPRI(ParmInfo)->ts_upri; |
duke@435 | 3828 | } else { |
duke@435 | 3829 | if ( ThreadPriorityVerbose ) { |
duke@435 | 3830 | tty->print_cr("set_lwp_priority: unexpected class in readback: %d\n", ParmInfo.pc_cid); |
duke@435 | 3831 | } |
duke@435 | 3832 | } |
duke@435 | 3833 | |
duke@435 | 3834 | if (Actual != Expected) { |
duke@435 | 3835 | if ( ThreadPriorityVerbose ) { |
duke@435 | 3836 | tty->print_cr ("set_lwp_priority(%d %d) Class=%d: actual=%d vs expected=%d\n", |
duke@435 | 3837 | lwpid, newPrio, ReadBack.pc_cid, Actual, Expected); |
duke@435 | 3838 | } |
duke@435 | 3839 | } |
duke@435 | 3840 | #endif |
duke@435 | 3841 | |
duke@435 | 3842 | return 0; |
duke@435 | 3843 | } |
duke@435 | 3844 | |
duke@435 | 3845 | |
duke@435 | 3846 | |
duke@435 | 3847 | // Solaris only gives access to 128 real priorities at a time, |
duke@435 | 3848 | // so we expand Java's ten to fill this range. This would be better |
duke@435 | 3849 | // if we dynamically adjusted relative priorities. |
duke@435 | 3850 | // |
duke@435 | 3851 | // The ThreadPriorityPolicy option allows us to select 2 different |
duke@435 | 3852 | // priority scales. |
duke@435 | 3853 | // |
duke@435 | 3854 | // ThreadPriorityPolicy=0 |
duke@435 | 3855 | // Since the Solaris' default priority is MaximumPriority, we do not |
duke@435 | 3856 | // set a priority lower than Max unless a priority lower than |
duke@435 | 3857 | // NormPriority is requested. |
duke@435 | 3858 | // |
duke@435 | 3859 | // ThreadPriorityPolicy=1 |
duke@435 | 3860 | // This mode causes the priority table to get filled with |
duke@435 | 3861 | // linear values. NormPriority get's mapped to 50% of the |
duke@435 | 3862 | // Maximum priority an so on. This will cause VM threads |
duke@435 | 3863 | // to get unfair treatment against other Solaris processes |
duke@435 | 3864 | // which do not explicitly alter their thread priorities. |
duke@435 | 3865 | // |
duke@435 | 3866 | |
duke@435 | 3867 | |
duke@435 | 3868 | int os::java_to_os_priority[MaxPriority + 1] = { |
duke@435 | 3869 | -99999, // 0 Entry should never be used |
duke@435 | 3870 | |
duke@435 | 3871 | 0, // 1 MinPriority |
duke@435 | 3872 | 32, // 2 |
duke@435 | 3873 | 64, // 3 |
duke@435 | 3874 | |
duke@435 | 3875 | 96, // 4 |
duke@435 | 3876 | 127, // 5 NormPriority |
duke@435 | 3877 | 127, // 6 |
duke@435 | 3878 | |
duke@435 | 3879 | 127, // 7 |
duke@435 | 3880 | 127, // 8 |
duke@435 | 3881 | 127, // 9 NearMaxPriority |
duke@435 | 3882 | |
duke@435 | 3883 | 127 // 10 MaxPriority |
duke@435 | 3884 | }; |
duke@435 | 3885 | |
duke@435 | 3886 | |
duke@435 | 3887 | OSReturn os::set_native_priority(Thread* thread, int newpri) { |
duke@435 | 3888 | assert(newpri >= MinimumPriority && newpri <= MaximumPriority, "bad priority mapping"); |
duke@435 | 3889 | if ( !UseThreadPriorities ) return OS_OK; |
duke@435 | 3890 | int status = thr_setprio(thread->osthread()->thread_id(), newpri); |
duke@435 | 3891 | if ( os::Solaris::T2_libthread() || (UseBoundThreads && thread->osthread()->is_vm_created()) ) |
duke@435 | 3892 | status |= (set_lwp_priority (thread->osthread()->thread_id(), |
duke@435 | 3893 | thread->osthread()->lwp_id(), newpri )); |
duke@435 | 3894 | return (status == 0) ? OS_OK : OS_ERR; |
duke@435 | 3895 | } |
duke@435 | 3896 | |
duke@435 | 3897 | |
duke@435 | 3898 | OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) { |
duke@435 | 3899 | int p; |
duke@435 | 3900 | if ( !UseThreadPriorities ) { |
duke@435 | 3901 | *priority_ptr = NormalPriority; |
duke@435 | 3902 | return OS_OK; |
duke@435 | 3903 | } |
duke@435 | 3904 | int status = thr_getprio(thread->osthread()->thread_id(), &p); |
duke@435 | 3905 | if (status != 0) { |
duke@435 | 3906 | return OS_ERR; |
duke@435 | 3907 | } |
duke@435 | 3908 | *priority_ptr = p; |
duke@435 | 3909 | return OS_OK; |
duke@435 | 3910 | } |
duke@435 | 3911 | |
duke@435 | 3912 | |
duke@435 | 3913 | // Hint to the underlying OS that a task switch would not be good. |
duke@435 | 3914 | // Void return because it's a hint and can fail. |
duke@435 | 3915 | void os::hint_no_preempt() { |
duke@435 | 3916 | schedctl_start(schedctl_init()); |
duke@435 | 3917 | } |
duke@435 | 3918 | |
duke@435 | 3919 | void os::interrupt(Thread* thread) { |
duke@435 | 3920 | assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); |
duke@435 | 3921 | |
duke@435 | 3922 | OSThread* osthread = thread->osthread(); |
duke@435 | 3923 | |
duke@435 | 3924 | int isInterrupted = osthread->interrupted(); |
duke@435 | 3925 | if (!isInterrupted) { |
duke@435 | 3926 | osthread->set_interrupted(true); |
duke@435 | 3927 | OrderAccess::fence(); |
duke@435 | 3928 | // os::sleep() is implemented with either poll (NULL,0,timeout) or |
duke@435 | 3929 | // by parking on _SleepEvent. If the former, thr_kill will unwedge |
duke@435 | 3930 | // the sleeper by SIGINTR, otherwise the unpark() will wake the sleeper. |
duke@435 | 3931 | ParkEvent * const slp = thread->_SleepEvent ; |
duke@435 | 3932 | if (slp != NULL) slp->unpark() ; |
duke@435 | 3933 | } |
duke@435 | 3934 | |
duke@435 | 3935 | // For JSR166: unpark after setting status but before thr_kill -dl |
duke@435 | 3936 | if (thread->is_Java_thread()) { |
duke@435 | 3937 | ((JavaThread*)thread)->parker()->unpark(); |
duke@435 | 3938 | } |
duke@435 | 3939 | |
duke@435 | 3940 | // Handle interruptible wait() ... |
duke@435 | 3941 | ParkEvent * const ev = thread->_ParkEvent ; |
duke@435 | 3942 | if (ev != NULL) ev->unpark() ; |
duke@435 | 3943 | |
duke@435 | 3944 | // When events are used everywhere for os::sleep, then this thr_kill |
duke@435 | 3945 | // will only be needed if UseVMInterruptibleIO is true. |
duke@435 | 3946 | |
duke@435 | 3947 | if (!isInterrupted) { |
duke@435 | 3948 | int status = thr_kill(osthread->thread_id(), os::Solaris::SIGinterrupt()); |
duke@435 | 3949 | assert_status(status == 0, status, "thr_kill"); |
duke@435 | 3950 | |
duke@435 | 3951 | // Bump thread interruption counter |
duke@435 | 3952 | RuntimeService::record_thread_interrupt_signaled_count(); |
duke@435 | 3953 | } |
duke@435 | 3954 | } |
duke@435 | 3955 | |
duke@435 | 3956 | |
duke@435 | 3957 | bool os::is_interrupted(Thread* thread, bool clear_interrupted) { |
duke@435 | 3958 | assert(Thread::current() == thread || Threads_lock->owned_by_self(), "possibility of dangling Thread pointer"); |
duke@435 | 3959 | |
duke@435 | 3960 | OSThread* osthread = thread->osthread(); |
duke@435 | 3961 | |
duke@435 | 3962 | bool res = osthread->interrupted(); |
duke@435 | 3963 | |
duke@435 | 3964 | // NOTE that since there is no "lock" around these two operations, |
duke@435 | 3965 | // there is the possibility that the interrupted flag will be |
duke@435 | 3966 | // "false" but that the interrupt event will be set. This is |
duke@435 | 3967 | // intentional. The effect of this is that Object.wait() will appear |
duke@435 | 3968 | // to have a spurious wakeup, which is not harmful, and the |
duke@435 | 3969 | // possibility is so rare that it is not worth the added complexity |
duke@435 | 3970 | // to add yet another lock. It has also been recommended not to put |
duke@435 | 3971 | // the interrupted flag into the os::Solaris::Event structure, |
duke@435 | 3972 | // because it hides the issue. |
duke@435 | 3973 | if (res && clear_interrupted) { |
duke@435 | 3974 | osthread->set_interrupted(false); |
duke@435 | 3975 | } |
duke@435 | 3976 | return res; |
duke@435 | 3977 | } |
duke@435 | 3978 | |
duke@435 | 3979 | |
duke@435 | 3980 | void os::print_statistics() { |
duke@435 | 3981 | } |
duke@435 | 3982 | |
duke@435 | 3983 | int os::message_box(const char* title, const char* message) { |
duke@435 | 3984 | int i; |
duke@435 | 3985 | fdStream err(defaultStream::error_fd()); |
duke@435 | 3986 | for (i = 0; i < 78; i++) err.print_raw("="); |
duke@435 | 3987 | err.cr(); |
duke@435 | 3988 | err.print_raw_cr(title); |
duke@435 | 3989 | for (i = 0; i < 78; i++) err.print_raw("-"); |
duke@435 | 3990 | err.cr(); |
duke@435 | 3991 | err.print_raw_cr(message); |
duke@435 | 3992 | for (i = 0; i < 78; i++) err.print_raw("="); |
duke@435 | 3993 | err.cr(); |
duke@435 | 3994 | |
duke@435 | 3995 | char buf[16]; |
duke@435 | 3996 | // Prevent process from exiting upon "read error" without consuming all CPU |
duke@435 | 3997 | while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); } |
duke@435 | 3998 | |
duke@435 | 3999 | return buf[0] == 'y' || buf[0] == 'Y'; |
duke@435 | 4000 | } |
duke@435 | 4001 | |
duke@435 | 4002 | // A lightweight implementation that does not suspend the target thread and |
duke@435 | 4003 | // thus returns only a hint. Used for profiling only! |
duke@435 | 4004 | ExtendedPC os::get_thread_pc(Thread* thread) { |
duke@435 | 4005 | // Make sure that it is called by the watcher and the Threads lock is owned. |
duke@435 | 4006 | assert(Thread::current()->is_Watcher_thread(), "Must be watcher and own Threads_lock"); |
duke@435 | 4007 | // For now, is only used to profile the VM Thread |
duke@435 | 4008 | assert(thread->is_VM_thread(), "Can only be called for VMThread"); |
duke@435 | 4009 | ExtendedPC epc; |
duke@435 | 4010 | |
duke@435 | 4011 | GetThreadPC_Callback cb(ProfileVM_lock); |
duke@435 | 4012 | OSThread *osthread = thread->osthread(); |
duke@435 | 4013 | const int time_to_wait = 400; // 400ms wait for initial response |
duke@435 | 4014 | int status = cb.interrupt(thread, time_to_wait); |
duke@435 | 4015 | |
duke@435 | 4016 | if (cb.is_done() ) { |
duke@435 | 4017 | epc = cb.addr(); |
duke@435 | 4018 | } else { |
duke@435 | 4019 | DEBUG_ONLY(tty->print_cr("Failed to get pc for thread: %d got %d status", |
duke@435 | 4020 | osthread->thread_id(), status);); |
duke@435 | 4021 | // epc is already NULL |
duke@435 | 4022 | } |
duke@435 | 4023 | return epc; |
duke@435 | 4024 | } |
duke@435 | 4025 | |
duke@435 | 4026 | |
duke@435 | 4027 | // This does not do anything on Solaris. This is basically a hook for being |
duke@435 | 4028 | // able to use structured exception handling (thread-local exception filters) on, e.g., Win32. |
duke@435 | 4029 | void os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method, JavaCallArguments* args, Thread* thread) { |
duke@435 | 4030 | f(value, method, args, thread); |
duke@435 | 4031 | } |
duke@435 | 4032 | |
duke@435 | 4033 | // This routine may be used by user applications as a "hook" to catch signals. |
duke@435 | 4034 | // The user-defined signal handler must pass unrecognized signals to this |
duke@435 | 4035 | // routine, and if it returns true (non-zero), then the signal handler must |
duke@435 | 4036 | // return immediately. If the flag "abort_if_unrecognized" is true, then this |
duke@435 | 4037 | // routine will never retun false (zero), but instead will execute a VM panic |
duke@435 | 4038 | // routine kill the process. |
duke@435 | 4039 | // |
duke@435 | 4040 | // If this routine returns false, it is OK to call it again. This allows |
duke@435 | 4041 | // the user-defined signal handler to perform checks either before or after |
duke@435 | 4042 | // the VM performs its own checks. Naturally, the user code would be making |
duke@435 | 4043 | // a serious error if it tried to handle an exception (such as a null check |
duke@435 | 4044 | // or breakpoint) that the VM was generating for its own correct operation. |
duke@435 | 4045 | // |
duke@435 | 4046 | // This routine may recognize any of the following kinds of signals: |
duke@435 | 4047 | // SIGBUS, SIGSEGV, SIGILL, SIGFPE, BREAK_SIGNAL, SIGPIPE, SIGXFSZ, |
duke@435 | 4048 | // os::Solaris::SIGasync |
duke@435 | 4049 | // It should be consulted by handlers for any of those signals. |
duke@435 | 4050 | // It explicitly does not recognize os::Solaris::SIGinterrupt |
duke@435 | 4051 | // |
duke@435 | 4052 | // The caller of this routine must pass in the three arguments supplied |
duke@435 | 4053 | // to the function referred to in the "sa_sigaction" (not the "sa_handler") |
duke@435 | 4054 | // field of the structure passed to sigaction(). This routine assumes that |
duke@435 | 4055 | // the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. |
duke@435 | 4056 | // |
duke@435 | 4057 | // Note that the VM will print warnings if it detects conflicting signal |
duke@435 | 4058 | // handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". |
duke@435 | 4059 | // |
duke@435 | 4060 | extern "C" int JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext, int abort_if_unrecognized); |
duke@435 | 4061 | |
duke@435 | 4062 | |
duke@435 | 4063 | void signalHandler(int sig, siginfo_t* info, void* ucVoid) { |
duke@435 | 4064 | JVM_handle_solaris_signal(sig, info, ucVoid, true); |
duke@435 | 4065 | } |
duke@435 | 4066 | |
duke@435 | 4067 | /* Do not delete - if guarantee is ever removed, a signal handler (even empty) |
duke@435 | 4068 | is needed to provoke threads blocked on IO to return an EINTR |
duke@435 | 4069 | Note: this explicitly does NOT call JVM_handle_solaris_signal and |
duke@435 | 4070 | does NOT participate in signal chaining due to requirement for |
duke@435 | 4071 | NOT setting SA_RESTART to make EINTR work. */ |
duke@435 | 4072 | extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) { |
duke@435 | 4073 | if (UseSignalChaining) { |
duke@435 | 4074 | struct sigaction *actp = os::Solaris::get_chained_signal_action(sig); |
duke@435 | 4075 | if (actp && actp->sa_handler) { |
duke@435 | 4076 | vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs"); |
duke@435 | 4077 | } |
duke@435 | 4078 | } |
duke@435 | 4079 | } |
duke@435 | 4080 | |
duke@435 | 4081 | // This boolean allows users to forward their own non-matching signals |
duke@435 | 4082 | // to JVM_handle_solaris_signal, harmlessly. |
duke@435 | 4083 | bool os::Solaris::signal_handlers_are_installed = false; |
duke@435 | 4084 | |
duke@435 | 4085 | // For signal-chaining |
duke@435 | 4086 | bool os::Solaris::libjsig_is_loaded = false; |
duke@435 | 4087 | typedef struct sigaction *(*get_signal_t)(int); |
duke@435 | 4088 | get_signal_t os::Solaris::get_signal_action = NULL; |
duke@435 | 4089 | |
duke@435 | 4090 | struct sigaction* os::Solaris::get_chained_signal_action(int sig) { |
duke@435 | 4091 | struct sigaction *actp = NULL; |
duke@435 | 4092 | |
duke@435 | 4093 | if ((libjsig_is_loaded) && (sig <= Maxlibjsigsigs)) { |
duke@435 | 4094 | // Retrieve the old signal handler from libjsig |
duke@435 | 4095 | actp = (*get_signal_action)(sig); |
duke@435 | 4096 | } |
duke@435 | 4097 | if (actp == NULL) { |
duke@435 | 4098 | // Retrieve the preinstalled signal handler from jvm |
duke@435 | 4099 | actp = get_preinstalled_handler(sig); |
duke@435 | 4100 | } |
duke@435 | 4101 | |
duke@435 | 4102 | return actp; |
duke@435 | 4103 | } |
duke@435 | 4104 | |
duke@435 | 4105 | static bool call_chained_handler(struct sigaction *actp, int sig, |
duke@435 | 4106 | siginfo_t *siginfo, void *context) { |
duke@435 | 4107 | // Call the old signal handler |
duke@435 | 4108 | if (actp->sa_handler == SIG_DFL) { |
duke@435 | 4109 | // It's more reasonable to let jvm treat it as an unexpected exception |
duke@435 | 4110 | // instead of taking the default action. |
duke@435 | 4111 | return false; |
duke@435 | 4112 | } else if (actp->sa_handler != SIG_IGN) { |
duke@435 | 4113 | if ((actp->sa_flags & SA_NODEFER) == 0) { |
duke@435 | 4114 | // automaticlly block the signal |
duke@435 | 4115 | sigaddset(&(actp->sa_mask), sig); |
duke@435 | 4116 | } |
duke@435 | 4117 | |
duke@435 | 4118 | sa_handler_t hand; |
duke@435 | 4119 | sa_sigaction_t sa; |
duke@435 | 4120 | bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0; |
duke@435 | 4121 | // retrieve the chained handler |
duke@435 | 4122 | if (siginfo_flag_set) { |
duke@435 | 4123 | sa = actp->sa_sigaction; |
duke@435 | 4124 | } else { |
duke@435 | 4125 | hand = actp->sa_handler; |
duke@435 | 4126 | } |
duke@435 | 4127 | |
duke@435 | 4128 | if ((actp->sa_flags & SA_RESETHAND) != 0) { |
duke@435 | 4129 | actp->sa_handler = SIG_DFL; |
duke@435 | 4130 | } |
duke@435 | 4131 | |
duke@435 | 4132 | // try to honor the signal mask |
duke@435 | 4133 | sigset_t oset; |
duke@435 | 4134 | thr_sigsetmask(SIG_SETMASK, &(actp->sa_mask), &oset); |
duke@435 | 4135 | |
duke@435 | 4136 | // call into the chained handler |
duke@435 | 4137 | if (siginfo_flag_set) { |
duke@435 | 4138 | (*sa)(sig, siginfo, context); |
duke@435 | 4139 | } else { |
duke@435 | 4140 | (*hand)(sig); |
duke@435 | 4141 | } |
duke@435 | 4142 | |
duke@435 | 4143 | // restore the signal mask |
duke@435 | 4144 | thr_sigsetmask(SIG_SETMASK, &oset, 0); |
duke@435 | 4145 | } |
duke@435 | 4146 | // Tell jvm's signal handler the signal is taken care of. |
duke@435 | 4147 | return true; |
duke@435 | 4148 | } |
duke@435 | 4149 | |
duke@435 | 4150 | bool os::Solaris::chained_handler(int sig, siginfo_t* siginfo, void* context) { |
duke@435 | 4151 | bool chained = false; |
duke@435 | 4152 | // signal-chaining |
duke@435 | 4153 | if (UseSignalChaining) { |
duke@435 | 4154 | struct sigaction *actp = get_chained_signal_action(sig); |
duke@435 | 4155 | if (actp != NULL) { |
duke@435 | 4156 | chained = call_chained_handler(actp, sig, siginfo, context); |
duke@435 | 4157 | } |
duke@435 | 4158 | } |
duke@435 | 4159 | return chained; |
duke@435 | 4160 | } |
duke@435 | 4161 | |
duke@435 | 4162 | struct sigaction* os::Solaris::get_preinstalled_handler(int sig) { |
duke@435 | 4163 | assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); |
duke@435 | 4164 | if (preinstalled_sigs[sig] != 0) { |
duke@435 | 4165 | return &chainedsigactions[sig]; |
duke@435 | 4166 | } |
duke@435 | 4167 | return NULL; |
duke@435 | 4168 | } |
duke@435 | 4169 | |
duke@435 | 4170 | void os::Solaris::save_preinstalled_handler(int sig, struct sigaction& oldAct) { |
duke@435 | 4171 | |
duke@435 | 4172 | assert(sig > 0 && sig <= Maxsignum, "vm signal out of expected range"); |
duke@435 | 4173 | assert((chainedsigactions != (struct sigaction *)NULL) && (preinstalled_sigs != (int *)NULL) , "signals not yet initialized"); |
duke@435 | 4174 | chainedsigactions[sig] = oldAct; |
duke@435 | 4175 | preinstalled_sigs[sig] = 1; |
duke@435 | 4176 | } |
duke@435 | 4177 | |
duke@435 | 4178 | void os::Solaris::set_signal_handler(int sig, bool set_installed, bool oktochain) { |
duke@435 | 4179 | // Check for overwrite. |
duke@435 | 4180 | struct sigaction oldAct; |
duke@435 | 4181 | sigaction(sig, (struct sigaction*)NULL, &oldAct); |
duke@435 | 4182 | void* oldhand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) |
duke@435 | 4183 | : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); |
duke@435 | 4184 | if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) && |
duke@435 | 4185 | oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) && |
duke@435 | 4186 | oldhand != CAST_FROM_FN_PTR(void*, signalHandler)) { |
duke@435 | 4187 | if (AllowUserSignalHandlers || !set_installed) { |
duke@435 | 4188 | // Do not overwrite; user takes responsibility to forward to us. |
duke@435 | 4189 | return; |
duke@435 | 4190 | } else if (UseSignalChaining) { |
duke@435 | 4191 | if (oktochain) { |
duke@435 | 4192 | // save the old handler in jvm |
duke@435 | 4193 | save_preinstalled_handler(sig, oldAct); |
duke@435 | 4194 | } else { |
duke@435 | 4195 | vm_exit_during_initialization("Signal chaining not allowed for VM interrupt signal, try -XX:+UseAltSigs."); |
duke@435 | 4196 | } |
duke@435 | 4197 | // libjsig also interposes the sigaction() call below and saves the |
duke@435 | 4198 | // old sigaction on it own. |
duke@435 | 4199 | } else { |
duke@435 | 4200 | fatal2("Encountered unexpected pre-existing sigaction handler %#lx for signal %d.", (long)oldhand, sig); |
duke@435 | 4201 | } |
duke@435 | 4202 | } |
duke@435 | 4203 | |
duke@435 | 4204 | struct sigaction sigAct; |
duke@435 | 4205 | sigfillset(&(sigAct.sa_mask)); |
duke@435 | 4206 | sigAct.sa_handler = SIG_DFL; |
duke@435 | 4207 | |
duke@435 | 4208 | sigAct.sa_sigaction = signalHandler; |
duke@435 | 4209 | // Handle SIGSEGV on alternate signal stack if |
duke@435 | 4210 | // not using stack banging |
duke@435 | 4211 | if (!UseStackBanging && sig == SIGSEGV) { |
duke@435 | 4212 | sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK; |
duke@435 | 4213 | // Interruptible i/o requires SA_RESTART cleared so EINTR |
duke@435 | 4214 | // is returned instead of restarting system calls |
duke@435 | 4215 | } else if (sig == os::Solaris::SIGinterrupt()) { |
duke@435 | 4216 | sigemptyset(&sigAct.sa_mask); |
duke@435 | 4217 | sigAct.sa_handler = NULL; |
duke@435 | 4218 | sigAct.sa_flags = SA_SIGINFO; |
duke@435 | 4219 | sigAct.sa_sigaction = sigINTRHandler; |
duke@435 | 4220 | } else { |
duke@435 | 4221 | sigAct.sa_flags = SA_SIGINFO | SA_RESTART; |
duke@435 | 4222 | } |
duke@435 | 4223 | os::Solaris::set_our_sigflags(sig, sigAct.sa_flags); |
duke@435 | 4224 | |
duke@435 | 4225 | sigaction(sig, &sigAct, &oldAct); |
duke@435 | 4226 | |
duke@435 | 4227 | void* oldhand2 = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) |
duke@435 | 4228 | : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); |
duke@435 | 4229 | assert(oldhand2 == oldhand, "no concurrent signal handler installation"); |
duke@435 | 4230 | } |
duke@435 | 4231 | |
duke@435 | 4232 | |
duke@435 | 4233 | #define DO_SIGNAL_CHECK(sig) \ |
duke@435 | 4234 | if (!sigismember(&check_signal_done, sig)) \ |
duke@435 | 4235 | os::Solaris::check_signal_handler(sig) |
duke@435 | 4236 | |
duke@435 | 4237 | // This method is a periodic task to check for misbehaving JNI applications |
duke@435 | 4238 | // under CheckJNI, we can add any periodic checks here |
duke@435 | 4239 | |
duke@435 | 4240 | void os::run_periodic_checks() { |
duke@435 | 4241 | // A big source of grief is hijacking virt. addr 0x0 on Solaris, |
duke@435 | 4242 | // thereby preventing a NULL checks. |
duke@435 | 4243 | if(!check_addr0_done) check_addr0_done = check_addr0(tty); |
duke@435 | 4244 | |
duke@435 | 4245 | if (check_signals == false) return; |
duke@435 | 4246 | |
duke@435 | 4247 | // SEGV and BUS if overridden could potentially prevent |
duke@435 | 4248 | // generation of hs*.log in the event of a crash, debugging |
duke@435 | 4249 | // such a case can be very challenging, so we absolutely |
duke@435 | 4250 | // check for the following for a good measure: |
duke@435 | 4251 | DO_SIGNAL_CHECK(SIGSEGV); |
duke@435 | 4252 | DO_SIGNAL_CHECK(SIGILL); |
duke@435 | 4253 | DO_SIGNAL_CHECK(SIGFPE); |
duke@435 | 4254 | DO_SIGNAL_CHECK(SIGBUS); |
duke@435 | 4255 | DO_SIGNAL_CHECK(SIGPIPE); |
duke@435 | 4256 | DO_SIGNAL_CHECK(SIGXFSZ); |
duke@435 | 4257 | |
duke@435 | 4258 | // ReduceSignalUsage allows the user to override these handlers |
duke@435 | 4259 | // see comments at the very top and jvm_solaris.h |
duke@435 | 4260 | if (!ReduceSignalUsage) { |
duke@435 | 4261 | DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL); |
duke@435 | 4262 | DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL); |
duke@435 | 4263 | DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL); |
duke@435 | 4264 | DO_SIGNAL_CHECK(BREAK_SIGNAL); |
duke@435 | 4265 | } |
duke@435 | 4266 | |
duke@435 | 4267 | // See comments above for using JVM1/JVM2 and UseAltSigs |
duke@435 | 4268 | DO_SIGNAL_CHECK(os::Solaris::SIGinterrupt()); |
duke@435 | 4269 | DO_SIGNAL_CHECK(os::Solaris::SIGasync()); |
duke@435 | 4270 | |
duke@435 | 4271 | } |
duke@435 | 4272 | |
duke@435 | 4273 | typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *); |
duke@435 | 4274 | |
duke@435 | 4275 | static os_sigaction_t os_sigaction = NULL; |
duke@435 | 4276 | |
duke@435 | 4277 | void os::Solaris::check_signal_handler(int sig) { |
duke@435 | 4278 | char buf[O_BUFLEN]; |
duke@435 | 4279 | address jvmHandler = NULL; |
duke@435 | 4280 | |
duke@435 | 4281 | struct sigaction act; |
duke@435 | 4282 | if (os_sigaction == NULL) { |
duke@435 | 4283 | // only trust the default sigaction, in case it has been interposed |
duke@435 | 4284 | os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction"); |
duke@435 | 4285 | if (os_sigaction == NULL) return; |
duke@435 | 4286 | } |
duke@435 | 4287 | |
duke@435 | 4288 | os_sigaction(sig, (struct sigaction*)NULL, &act); |
duke@435 | 4289 | |
duke@435 | 4290 | address thisHandler = (act.sa_flags & SA_SIGINFO) |
duke@435 | 4291 | ? CAST_FROM_FN_PTR(address, act.sa_sigaction) |
duke@435 | 4292 | : CAST_FROM_FN_PTR(address, act.sa_handler) ; |
duke@435 | 4293 | |
duke@435 | 4294 | |
duke@435 | 4295 | switch(sig) { |
duke@435 | 4296 | case SIGSEGV: |
duke@435 | 4297 | case SIGBUS: |
duke@435 | 4298 | case SIGFPE: |
duke@435 | 4299 | case SIGPIPE: |
duke@435 | 4300 | case SIGXFSZ: |
duke@435 | 4301 | case SIGILL: |
duke@435 | 4302 | jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); |
duke@435 | 4303 | break; |
duke@435 | 4304 | |
duke@435 | 4305 | case SHUTDOWN1_SIGNAL: |
duke@435 | 4306 | case SHUTDOWN2_SIGNAL: |
duke@435 | 4307 | case SHUTDOWN3_SIGNAL: |
duke@435 | 4308 | case BREAK_SIGNAL: |
duke@435 | 4309 | jvmHandler = (address)user_handler(); |
duke@435 | 4310 | break; |
duke@435 | 4311 | |
duke@435 | 4312 | default: |
duke@435 | 4313 | int intrsig = os::Solaris::SIGinterrupt(); |
duke@435 | 4314 | int asynsig = os::Solaris::SIGasync(); |
duke@435 | 4315 | |
duke@435 | 4316 | if (sig == intrsig) { |
duke@435 | 4317 | jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler); |
duke@435 | 4318 | } else if (sig == asynsig) { |
duke@435 | 4319 | jvmHandler = CAST_FROM_FN_PTR(address, signalHandler); |
duke@435 | 4320 | } else { |
duke@435 | 4321 | return; |
duke@435 | 4322 | } |
duke@435 | 4323 | break; |
duke@435 | 4324 | } |
duke@435 | 4325 | |
duke@435 | 4326 | |
duke@435 | 4327 | if (thisHandler != jvmHandler) { |
duke@435 | 4328 | tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN)); |
duke@435 | 4329 | tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN)); |
duke@435 | 4330 | tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN)); |
duke@435 | 4331 | // No need to check this sig any longer |
duke@435 | 4332 | sigaddset(&check_signal_done, sig); |
duke@435 | 4333 | } else if(os::Solaris::get_our_sigflags(sig) != 0 && act.sa_flags != os::Solaris::get_our_sigflags(sig)) { |
duke@435 | 4334 | tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN)); |
duke@435 | 4335 | tty->print("expected:" PTR32_FORMAT, os::Solaris::get_our_sigflags(sig)); |
duke@435 | 4336 | tty->print_cr(" found:" PTR32_FORMAT, act.sa_flags); |
duke@435 | 4337 | // No need to check this sig any longer |
duke@435 | 4338 | sigaddset(&check_signal_done, sig); |
duke@435 | 4339 | } |
duke@435 | 4340 | |
duke@435 | 4341 | // Print all the signal handler state |
duke@435 | 4342 | if (sigismember(&check_signal_done, sig)) { |
duke@435 | 4343 | print_signal_handlers(tty, buf, O_BUFLEN); |
duke@435 | 4344 | } |
duke@435 | 4345 | |
duke@435 | 4346 | } |
duke@435 | 4347 | |
duke@435 | 4348 | void os::Solaris::install_signal_handlers() { |
duke@435 | 4349 | bool libjsigdone = false; |
duke@435 | 4350 | signal_handlers_are_installed = true; |
duke@435 | 4351 | |
duke@435 | 4352 | // signal-chaining |
duke@435 | 4353 | typedef void (*signal_setting_t)(); |
duke@435 | 4354 | signal_setting_t begin_signal_setting = NULL; |
duke@435 | 4355 | signal_setting_t end_signal_setting = NULL; |
duke@435 | 4356 | begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t, |
duke@435 | 4357 | dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting")); |
duke@435 | 4358 | if (begin_signal_setting != NULL) { |
duke@435 | 4359 | end_signal_setting = CAST_TO_FN_PTR(signal_setting_t, |
duke@435 | 4360 | dlsym(RTLD_DEFAULT, "JVM_end_signal_setting")); |
duke@435 | 4361 | get_signal_action = CAST_TO_FN_PTR(get_signal_t, |
duke@435 | 4362 | dlsym(RTLD_DEFAULT, "JVM_get_signal_action")); |
duke@435 | 4363 | get_libjsig_version = CAST_TO_FN_PTR(version_getting_t, |
duke@435 | 4364 | dlsym(RTLD_DEFAULT, "JVM_get_libjsig_version")); |
duke@435 | 4365 | libjsig_is_loaded = true; |
duke@435 | 4366 | if (os::Solaris::get_libjsig_version != NULL) { |
duke@435 | 4367 | libjsigversion = (*os::Solaris::get_libjsig_version)(); |
duke@435 | 4368 | } |
duke@435 | 4369 | assert(UseSignalChaining, "should enable signal-chaining"); |
duke@435 | 4370 | } |
duke@435 | 4371 | if (libjsig_is_loaded) { |
duke@435 | 4372 | // Tell libjsig jvm is setting signal handlers |
duke@435 | 4373 | (*begin_signal_setting)(); |
duke@435 | 4374 | } |
duke@435 | 4375 | |
duke@435 | 4376 | set_signal_handler(SIGSEGV, true, true); |
duke@435 | 4377 | set_signal_handler(SIGPIPE, true, true); |
duke@435 | 4378 | set_signal_handler(SIGXFSZ, true, true); |
duke@435 | 4379 | set_signal_handler(SIGBUS, true, true); |
duke@435 | 4380 | set_signal_handler(SIGILL, true, true); |
duke@435 | 4381 | set_signal_handler(SIGFPE, true, true); |
duke@435 | 4382 | |
duke@435 | 4383 | |
duke@435 | 4384 | if (os::Solaris::SIGinterrupt() > OLDMAXSIGNUM || os::Solaris::SIGasync() > OLDMAXSIGNUM) { |
duke@435 | 4385 | |
duke@435 | 4386 | // Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so |
duke@435 | 4387 | // can not register overridable signals which might be > 32 |
duke@435 | 4388 | if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) { |
duke@435 | 4389 | // Tell libjsig jvm has finished setting signal handlers |
duke@435 | 4390 | (*end_signal_setting)(); |
duke@435 | 4391 | libjsigdone = true; |
duke@435 | 4392 | } |
duke@435 | 4393 | } |
duke@435 | 4394 | |
duke@435 | 4395 | // Never ok to chain our SIGinterrupt |
duke@435 | 4396 | set_signal_handler(os::Solaris::SIGinterrupt(), true, false); |
duke@435 | 4397 | set_signal_handler(os::Solaris::SIGasync(), true, true); |
duke@435 | 4398 | |
duke@435 | 4399 | if (libjsig_is_loaded && !libjsigdone) { |
duke@435 | 4400 | // Tell libjsig jvm finishes setting signal handlers |
duke@435 | 4401 | (*end_signal_setting)(); |
duke@435 | 4402 | } |
duke@435 | 4403 | |
duke@435 | 4404 | // We don't activate signal checker if libjsig is in place, we trust ourselves |
duke@435 | 4405 | // and if UserSignalHandler is installed all bets are off |
duke@435 | 4406 | if (CheckJNICalls) { |
duke@435 | 4407 | if (libjsig_is_loaded) { |
duke@435 | 4408 | tty->print_cr("Info: libjsig is activated, all active signal checking is disabled"); |
duke@435 | 4409 | check_signals = false; |
duke@435 | 4410 | } |
duke@435 | 4411 | if (AllowUserSignalHandlers) { |
duke@435 | 4412 | tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled"); |
duke@435 | 4413 | check_signals = false; |
duke@435 | 4414 | } |
duke@435 | 4415 | } |
duke@435 | 4416 | } |
duke@435 | 4417 | |
duke@435 | 4418 | |
duke@435 | 4419 | void report_error(const char* file_name, int line_no, const char* title, const char* format, ...); |
duke@435 | 4420 | |
duke@435 | 4421 | const char * signames[] = { |
duke@435 | 4422 | "SIG0", |
duke@435 | 4423 | "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP", |
duke@435 | 4424 | "SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS", |
duke@435 | 4425 | "SIGSEGV", "SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM", |
duke@435 | 4426 | "SIGUSR1", "SIGUSR2", "SIGCLD", "SIGPWR", "SIGWINCH", |
duke@435 | 4427 | "SIGURG", "SIGPOLL", "SIGSTOP", "SIGTSTP", "SIGCONT", |
duke@435 | 4428 | "SIGTTIN", "SIGTTOU", "SIGVTALRM", "SIGPROF", "SIGXCPU", |
duke@435 | 4429 | "SIGXFSZ", "SIGWAITING", "SIGLWP", "SIGFREEZE", "SIGTHAW", |
duke@435 | 4430 | "SIGCANCEL", "SIGLOST" |
duke@435 | 4431 | }; |
duke@435 | 4432 | |
duke@435 | 4433 | const char* os::exception_name(int exception_code, char* buf, size_t size) { |
duke@435 | 4434 | if (0 < exception_code && exception_code <= SIGRTMAX) { |
duke@435 | 4435 | // signal |
duke@435 | 4436 | if (exception_code < sizeof(signames)/sizeof(const char*)) { |
duke@435 | 4437 | jio_snprintf(buf, size, "%s", signames[exception_code]); |
duke@435 | 4438 | } else { |
duke@435 | 4439 | jio_snprintf(buf, size, "SIG%d", exception_code); |
duke@435 | 4440 | } |
duke@435 | 4441 | return buf; |
duke@435 | 4442 | } else { |
duke@435 | 4443 | return NULL; |
duke@435 | 4444 | } |
duke@435 | 4445 | } |
duke@435 | 4446 | |
duke@435 | 4447 | // (Static) wrappers for the new libthread API |
duke@435 | 4448 | int_fnP_thread_t_iP_uP_stack_tP_gregset_t os::Solaris::_thr_getstate; |
duke@435 | 4449 | int_fnP_thread_t_i_gregset_t os::Solaris::_thr_setstate; |
duke@435 | 4450 | int_fnP_thread_t_i os::Solaris::_thr_setmutator; |
duke@435 | 4451 | int_fnP_thread_t os::Solaris::_thr_suspend_mutator; |
duke@435 | 4452 | int_fnP_thread_t os::Solaris::_thr_continue_mutator; |
duke@435 | 4453 | |
twisti@1076 | 4454 | // (Static) wrapper for getisax(2) call. |
twisti@1076 | 4455 | os::Solaris::getisax_func_t os::Solaris::_getisax = 0; |
twisti@1076 | 4456 | |
duke@435 | 4457 | // (Static) wrappers for the liblgrp API |
duke@435 | 4458 | os::Solaris::lgrp_home_func_t os::Solaris::_lgrp_home; |
duke@435 | 4459 | os::Solaris::lgrp_init_func_t os::Solaris::_lgrp_init; |
duke@435 | 4460 | os::Solaris::lgrp_fini_func_t os::Solaris::_lgrp_fini; |
duke@435 | 4461 | os::Solaris::lgrp_root_func_t os::Solaris::_lgrp_root; |
duke@435 | 4462 | os::Solaris::lgrp_children_func_t os::Solaris::_lgrp_children; |
iveresov@579 | 4463 | os::Solaris::lgrp_resources_func_t os::Solaris::_lgrp_resources; |
duke@435 | 4464 | os::Solaris::lgrp_nlgrps_func_t os::Solaris::_lgrp_nlgrps; |
duke@435 | 4465 | os::Solaris::lgrp_cookie_stale_func_t os::Solaris::_lgrp_cookie_stale; |
duke@435 | 4466 | os::Solaris::lgrp_cookie_t os::Solaris::_lgrp_cookie = 0; |
duke@435 | 4467 | |
duke@435 | 4468 | // (Static) wrapper for meminfo() call. |
duke@435 | 4469 | os::Solaris::meminfo_func_t os::Solaris::_meminfo = 0; |
duke@435 | 4470 | |
twisti@1076 | 4471 | static address resolve_symbol_lazy(const char* name) { |
twisti@1076 | 4472 | address addr = (address) dlsym(RTLD_DEFAULT, name); |
duke@435 | 4473 | if(addr == NULL) { |
duke@435 | 4474 | // RTLD_DEFAULT was not defined on some early versions of 2.5.1 |
duke@435 | 4475 | addr = (address) dlsym(RTLD_NEXT, name); |
twisti@1076 | 4476 | } |
twisti@1076 | 4477 | return addr; |
twisti@1076 | 4478 | } |
twisti@1076 | 4479 | |
twisti@1076 | 4480 | static address resolve_symbol(const char* name) { |
twisti@1076 | 4481 | address addr = resolve_symbol_lazy(name); |
twisti@1076 | 4482 | if(addr == NULL) { |
twisti@1076 | 4483 | fatal(dlerror()); |
duke@435 | 4484 | } |
duke@435 | 4485 | return addr; |
duke@435 | 4486 | } |
duke@435 | 4487 | |
duke@435 | 4488 | |
duke@435 | 4489 | |
duke@435 | 4490 | // isT2_libthread() |
duke@435 | 4491 | // |
duke@435 | 4492 | // Routine to determine if we are currently using the new T2 libthread. |
duke@435 | 4493 | // |
duke@435 | 4494 | // We determine if we are using T2 by reading /proc/self/lstatus and |
duke@435 | 4495 | // looking for a thread with the ASLWP bit set. If we find this status |
duke@435 | 4496 | // bit set, we must assume that we are NOT using T2. The T2 team |
duke@435 | 4497 | // has approved this algorithm. |
duke@435 | 4498 | // |
duke@435 | 4499 | // We need to determine if we are running with the new T2 libthread |
duke@435 | 4500 | // since setting native thread priorities is handled differently |
duke@435 | 4501 | // when using this library. All threads created using T2 are bound |
duke@435 | 4502 | // threads. Calling thr_setprio is meaningless in this case. |
duke@435 | 4503 | // |
duke@435 | 4504 | bool isT2_libthread() { |
duke@435 | 4505 | static prheader_t * lwpArray = NULL; |
duke@435 | 4506 | static int lwpSize = 0; |
duke@435 | 4507 | static int lwpFile = -1; |
duke@435 | 4508 | lwpstatus_t * that; |
duke@435 | 4509 | char lwpName [128]; |
duke@435 | 4510 | bool isT2 = false; |
duke@435 | 4511 | |
duke@435 | 4512 | #define ADR(x) ((uintptr_t)(x)) |
duke@435 | 4513 | #define LWPINDEX(ary,ix) ((lwpstatus_t *)(((ary)->pr_entsize * (ix)) + (ADR((ary) + 1)))) |
duke@435 | 4514 | |
xlu@524 | 4515 | lwpFile = open("/proc/self/lstatus", O_RDONLY, 0); |
xlu@524 | 4516 | if (lwpFile < 0) { |
xlu@524 | 4517 | if (ThreadPriorityVerbose) warning ("Couldn't open /proc/self/lstatus\n"); |
xlu@524 | 4518 | return false; |
xlu@524 | 4519 | } |
duke@435 | 4520 | lwpSize = 16*1024; |
duke@435 | 4521 | for (;;) { |
duke@435 | 4522 | lseek (lwpFile, 0, SEEK_SET); |
xlu@524 | 4523 | lwpArray = (prheader_t *)NEW_C_HEAP_ARRAY(char, lwpSize); |
xlu@524 | 4524 | if (read(lwpFile, lwpArray, lwpSize) < 0) { |
xlu@524 | 4525 | if (ThreadPriorityVerbose) warning("Error reading /proc/self/lstatus\n"); |
duke@435 | 4526 | break; |
duke@435 | 4527 | } |
xlu@524 | 4528 | if ((lwpArray->pr_nent * lwpArray->pr_entsize) <= lwpSize) { |
xlu@524 | 4529 | // We got a good snapshot - now iterate over the list. |
xlu@524 | 4530 | int aslwpcount = 0; |
xlu@524 | 4531 | for (int i = 0; i < lwpArray->pr_nent; i++ ) { |
xlu@524 | 4532 | that = LWPINDEX(lwpArray,i); |
xlu@524 | 4533 | if (that->pr_flags & PR_ASLWP) { |
xlu@524 | 4534 | aslwpcount++; |
xlu@524 | 4535 | } |
xlu@524 | 4536 | } |
xlu@524 | 4537 | if (aslwpcount == 0) isT2 = true; |
xlu@524 | 4538 | break; |
xlu@524 | 4539 | } |
duke@435 | 4540 | lwpSize = lwpArray->pr_nent * lwpArray->pr_entsize; |
xlu@524 | 4541 | FREE_C_HEAP_ARRAY(char, lwpArray); // retry. |
xlu@524 | 4542 | } |
duke@435 | 4543 | |
duke@435 | 4544 | FREE_C_HEAP_ARRAY(char, lwpArray); |
duke@435 | 4545 | close (lwpFile); |
xlu@524 | 4546 | if (ThreadPriorityVerbose) { |
xlu@524 | 4547 | if (isT2) tty->print_cr("We are running with a T2 libthread\n"); |
duke@435 | 4548 | else tty->print_cr("We are not running with a T2 libthread\n"); |
duke@435 | 4549 | } |
xlu@524 | 4550 | return isT2; |
duke@435 | 4551 | } |
duke@435 | 4552 | |
duke@435 | 4553 | |
duke@435 | 4554 | void os::Solaris::libthread_init() { |
duke@435 | 4555 | address func = (address)dlsym(RTLD_DEFAULT, "_thr_suspend_allmutators"); |
duke@435 | 4556 | |
duke@435 | 4557 | // Determine if we are running with the new T2 libthread |
duke@435 | 4558 | os::Solaris::set_T2_libthread(isT2_libthread()); |
duke@435 | 4559 | |
duke@435 | 4560 | lwp_priocntl_init(); |
duke@435 | 4561 | |
duke@435 | 4562 | // RTLD_DEFAULT was not defined on some early versions of 5.5.1 |
duke@435 | 4563 | if(func == NULL) { |
duke@435 | 4564 | func = (address) dlsym(RTLD_NEXT, "_thr_suspend_allmutators"); |
duke@435 | 4565 | // Guarantee that this VM is running on an new enough OS (5.6 or |
duke@435 | 4566 | // later) that it will have a new enough libthread.so. |
duke@435 | 4567 | guarantee(func != NULL, "libthread.so is too old."); |
duke@435 | 4568 | } |
duke@435 | 4569 | |
duke@435 | 4570 | // Initialize the new libthread getstate API wrappers |
duke@435 | 4571 | func = resolve_symbol("thr_getstate"); |
duke@435 | 4572 | os::Solaris::set_thr_getstate(CAST_TO_FN_PTR(int_fnP_thread_t_iP_uP_stack_tP_gregset_t, func)); |
duke@435 | 4573 | |
duke@435 | 4574 | func = resolve_symbol("thr_setstate"); |
duke@435 | 4575 | os::Solaris::set_thr_setstate(CAST_TO_FN_PTR(int_fnP_thread_t_i_gregset_t, func)); |
duke@435 | 4576 | |
duke@435 | 4577 | func = resolve_symbol("thr_setmutator"); |
duke@435 | 4578 | os::Solaris::set_thr_setmutator(CAST_TO_FN_PTR(int_fnP_thread_t_i, func)); |
duke@435 | 4579 | |
duke@435 | 4580 | func = resolve_symbol("thr_suspend_mutator"); |
duke@435 | 4581 | os::Solaris::set_thr_suspend_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); |
duke@435 | 4582 | |
duke@435 | 4583 | func = resolve_symbol("thr_continue_mutator"); |
duke@435 | 4584 | os::Solaris::set_thr_continue_mutator(CAST_TO_FN_PTR(int_fnP_thread_t, func)); |
duke@435 | 4585 | |
duke@435 | 4586 | int size; |
duke@435 | 4587 | void (*handler_info_func)(address *, int *); |
duke@435 | 4588 | handler_info_func = CAST_TO_FN_PTR(void (*)(address *, int *), resolve_symbol("thr_sighndlrinfo")); |
duke@435 | 4589 | handler_info_func(&handler_start, &size); |
duke@435 | 4590 | handler_end = handler_start + size; |
duke@435 | 4591 | } |
duke@435 | 4592 | |
duke@435 | 4593 | |
duke@435 | 4594 | int_fnP_mutex_tP os::Solaris::_mutex_lock; |
duke@435 | 4595 | int_fnP_mutex_tP os::Solaris::_mutex_trylock; |
duke@435 | 4596 | int_fnP_mutex_tP os::Solaris::_mutex_unlock; |
duke@435 | 4597 | int_fnP_mutex_tP_i_vP os::Solaris::_mutex_init; |
duke@435 | 4598 | int_fnP_mutex_tP os::Solaris::_mutex_destroy; |
duke@435 | 4599 | int os::Solaris::_mutex_scope = USYNC_THREAD; |
duke@435 | 4600 | |
duke@435 | 4601 | int_fnP_cond_tP_mutex_tP_timestruc_tP os::Solaris::_cond_timedwait; |
duke@435 | 4602 | int_fnP_cond_tP_mutex_tP os::Solaris::_cond_wait; |
duke@435 | 4603 | int_fnP_cond_tP os::Solaris::_cond_signal; |
duke@435 | 4604 | int_fnP_cond_tP os::Solaris::_cond_broadcast; |
duke@435 | 4605 | int_fnP_cond_tP_i_vP os::Solaris::_cond_init; |
duke@435 | 4606 | int_fnP_cond_tP os::Solaris::_cond_destroy; |
duke@435 | 4607 | int os::Solaris::_cond_scope = USYNC_THREAD; |
duke@435 | 4608 | |
duke@435 | 4609 | void os::Solaris::synchronization_init() { |
duke@435 | 4610 | if(UseLWPSynchronization) { |
duke@435 | 4611 | os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_lock"))); |
duke@435 | 4612 | os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_trylock"))); |
duke@435 | 4613 | os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("_lwp_mutex_unlock"))); |
duke@435 | 4614 | os::Solaris::set_mutex_init(lwp_mutex_init); |
duke@435 | 4615 | os::Solaris::set_mutex_destroy(lwp_mutex_destroy); |
duke@435 | 4616 | os::Solaris::set_mutex_scope(USYNC_THREAD); |
duke@435 | 4617 | |
duke@435 | 4618 | os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("_lwp_cond_timedwait"))); |
duke@435 | 4619 | os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("_lwp_cond_wait"))); |
duke@435 | 4620 | os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_signal"))); |
duke@435 | 4621 | os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("_lwp_cond_broadcast"))); |
duke@435 | 4622 | os::Solaris::set_cond_init(lwp_cond_init); |
duke@435 | 4623 | os::Solaris::set_cond_destroy(lwp_cond_destroy); |
duke@435 | 4624 | os::Solaris::set_cond_scope(USYNC_THREAD); |
duke@435 | 4625 | } |
duke@435 | 4626 | else { |
duke@435 | 4627 | os::Solaris::set_mutex_scope(USYNC_THREAD); |
duke@435 | 4628 | os::Solaris::set_cond_scope(USYNC_THREAD); |
duke@435 | 4629 | |
duke@435 | 4630 | if(UsePthreads) { |
duke@435 | 4631 | os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_lock"))); |
duke@435 | 4632 | os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_trylock"))); |
duke@435 | 4633 | os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_unlock"))); |
duke@435 | 4634 | os::Solaris::set_mutex_init(pthread_mutex_default_init); |
duke@435 | 4635 | os::Solaris::set_mutex_destroy(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("pthread_mutex_destroy"))); |
duke@435 | 4636 | |
duke@435 | 4637 | os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("pthread_cond_timedwait"))); |
duke@435 | 4638 | os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("pthread_cond_wait"))); |
duke@435 | 4639 | os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_signal"))); |
duke@435 | 4640 | os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_broadcast"))); |
duke@435 | 4641 | os::Solaris::set_cond_init(pthread_cond_default_init); |
duke@435 | 4642 | os::Solaris::set_cond_destroy(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("pthread_cond_destroy"))); |
duke@435 | 4643 | } |
duke@435 | 4644 | else { |
duke@435 | 4645 | os::Solaris::set_mutex_lock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_lock"))); |
duke@435 | 4646 | os::Solaris::set_mutex_trylock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_trylock"))); |
duke@435 | 4647 | os::Solaris::set_mutex_unlock(CAST_TO_FN_PTR(int_fnP_mutex_tP, resolve_symbol("mutex_unlock"))); |
duke@435 | 4648 | os::Solaris::set_mutex_init(::mutex_init); |
duke@435 | 4649 | os::Solaris::set_mutex_destroy(::mutex_destroy); |
duke@435 | 4650 | |
duke@435 | 4651 | os::Solaris::set_cond_timedwait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP_timestruc_tP, resolve_symbol("cond_timedwait"))); |
duke@435 | 4652 | os::Solaris::set_cond_wait(CAST_TO_FN_PTR(int_fnP_cond_tP_mutex_tP, resolve_symbol("cond_wait"))); |
duke@435 | 4653 | os::Solaris::set_cond_signal(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_signal"))); |
duke@435 | 4654 | os::Solaris::set_cond_broadcast(CAST_TO_FN_PTR(int_fnP_cond_tP, resolve_symbol("cond_broadcast"))); |
duke@435 | 4655 | os::Solaris::set_cond_init(::cond_init); |
duke@435 | 4656 | os::Solaris::set_cond_destroy(::cond_destroy); |
duke@435 | 4657 | } |
duke@435 | 4658 | } |
duke@435 | 4659 | } |
duke@435 | 4660 | |
iveresov@897 | 4661 | bool os::Solaris::liblgrp_init() { |
iveresov@702 | 4662 | void *handle = dlopen("liblgrp.so.1", RTLD_LAZY); |
duke@435 | 4663 | if (handle != NULL) { |
duke@435 | 4664 | os::Solaris::set_lgrp_home(CAST_TO_FN_PTR(lgrp_home_func_t, dlsym(handle, "lgrp_home"))); |
duke@435 | 4665 | os::Solaris::set_lgrp_init(CAST_TO_FN_PTR(lgrp_init_func_t, dlsym(handle, "lgrp_init"))); |
duke@435 | 4666 | os::Solaris::set_lgrp_fini(CAST_TO_FN_PTR(lgrp_fini_func_t, dlsym(handle, "lgrp_fini"))); |
duke@435 | 4667 | os::Solaris::set_lgrp_root(CAST_TO_FN_PTR(lgrp_root_func_t, dlsym(handle, "lgrp_root"))); |
duke@435 | 4668 | os::Solaris::set_lgrp_children(CAST_TO_FN_PTR(lgrp_children_func_t, dlsym(handle, "lgrp_children"))); |
iveresov@579 | 4669 | os::Solaris::set_lgrp_resources(CAST_TO_FN_PTR(lgrp_resources_func_t, dlsym(handle, "lgrp_resources"))); |
duke@435 | 4670 | os::Solaris::set_lgrp_nlgrps(CAST_TO_FN_PTR(lgrp_nlgrps_func_t, dlsym(handle, "lgrp_nlgrps"))); |
duke@435 | 4671 | os::Solaris::set_lgrp_cookie_stale(CAST_TO_FN_PTR(lgrp_cookie_stale_func_t, |
duke@435 | 4672 | dlsym(handle, "lgrp_cookie_stale"))); |
duke@435 | 4673 | |
duke@435 | 4674 | lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER); |
duke@435 | 4675 | set_lgrp_cookie(c); |
iveresov@897 | 4676 | return true; |
iveresov@897 | 4677 | } |
iveresov@897 | 4678 | return false; |
duke@435 | 4679 | } |
duke@435 | 4680 | |
duke@435 | 4681 | void os::Solaris::misc_sym_init() { |
twisti@1076 | 4682 | address func; |
twisti@1076 | 4683 | |
twisti@1076 | 4684 | // getisax |
twisti@1076 | 4685 | func = resolve_symbol_lazy("getisax"); |
twisti@1076 | 4686 | if (func != NULL) { |
twisti@1076 | 4687 | os::Solaris::_getisax = CAST_TO_FN_PTR(getisax_func_t, func); |
twisti@1076 | 4688 | } |
twisti@1076 | 4689 | |
twisti@1076 | 4690 | // meminfo |
twisti@1076 | 4691 | func = resolve_symbol_lazy("meminfo"); |
duke@435 | 4692 | if (func != NULL) { |
duke@435 | 4693 | os::Solaris::set_meminfo(CAST_TO_FN_PTR(meminfo_func_t, func)); |
duke@435 | 4694 | } |
duke@435 | 4695 | } |
duke@435 | 4696 | |
twisti@1076 | 4697 | uint_t os::Solaris::getisax(uint32_t* array, uint_t n) { |
twisti@1076 | 4698 | assert(_getisax != NULL, "_getisax not set"); |
twisti@1076 | 4699 | return _getisax(array, n); |
twisti@1076 | 4700 | } |
twisti@1076 | 4701 | |
duke@435 | 4702 | // Symbol doesn't exist in Solaris 8 pset.h |
duke@435 | 4703 | #ifndef PS_MYID |
duke@435 | 4704 | #define PS_MYID -3 |
duke@435 | 4705 | #endif |
duke@435 | 4706 | |
duke@435 | 4707 | // int pset_getloadavg(psetid_t pset, double loadavg[], int nelem); |
duke@435 | 4708 | typedef long (*pset_getloadavg_type)(psetid_t pset, double loadavg[], int nelem); |
duke@435 | 4709 | static pset_getloadavg_type pset_getloadavg_ptr = NULL; |
duke@435 | 4710 | |
duke@435 | 4711 | void init_pset_getloadavg_ptr(void) { |
duke@435 | 4712 | pset_getloadavg_ptr = |
duke@435 | 4713 | (pset_getloadavg_type)dlsym(RTLD_DEFAULT, "pset_getloadavg"); |
duke@435 | 4714 | if (PrintMiscellaneous && Verbose && pset_getloadavg_ptr == NULL) { |
duke@435 | 4715 | warning("pset_getloadavg function not found"); |
duke@435 | 4716 | } |
duke@435 | 4717 | } |
duke@435 | 4718 | |
duke@435 | 4719 | int os::Solaris::_dev_zero_fd = -1; |
duke@435 | 4720 | |
duke@435 | 4721 | // this is called _before_ the global arguments have been parsed |
duke@435 | 4722 | void os::init(void) { |
duke@435 | 4723 | _initial_pid = getpid(); |
duke@435 | 4724 | |
duke@435 | 4725 | max_hrtime = first_hrtime = gethrtime(); |
duke@435 | 4726 | |
duke@435 | 4727 | init_random(1234567); |
duke@435 | 4728 | |
duke@435 | 4729 | page_size = sysconf(_SC_PAGESIZE); |
duke@435 | 4730 | if (page_size == -1) |
duke@435 | 4731 | fatal1("os_solaris.cpp: os::init: sysconf failed (%s)", strerror(errno)); |
duke@435 | 4732 | init_page_sizes((size_t) page_size); |
duke@435 | 4733 | |
duke@435 | 4734 | Solaris::initialize_system_info(); |
duke@435 | 4735 | |
twisti@1076 | 4736 | // Initialize misc. symbols as soon as possible, so we can use them |
twisti@1076 | 4737 | // if we need them. |
twisti@1076 | 4738 | Solaris::misc_sym_init(); |
twisti@1076 | 4739 | |
duke@435 | 4740 | int fd = open("/dev/zero", O_RDWR); |
duke@435 | 4741 | if (fd < 0) { |
duke@435 | 4742 | fatal1("os::init: cannot open /dev/zero (%s)", strerror(errno)); |
duke@435 | 4743 | } else { |
duke@435 | 4744 | Solaris::set_dev_zero_fd(fd); |
duke@435 | 4745 | |
duke@435 | 4746 | // Close on exec, child won't inherit. |
duke@435 | 4747 | fcntl(fd, F_SETFD, FD_CLOEXEC); |
duke@435 | 4748 | } |
duke@435 | 4749 | |
duke@435 | 4750 | clock_tics_per_sec = CLK_TCK; |
duke@435 | 4751 | |
duke@435 | 4752 | // check if dladdr1() exists; dladdr1 can provide more information than |
duke@435 | 4753 | // dladdr for os::dll_address_to_function_name. It comes with SunOS 5.9 |
duke@435 | 4754 | // and is available on linker patches for 5.7 and 5.8. |
duke@435 | 4755 | // libdl.so must have been loaded, this call is just an entry lookup |
duke@435 | 4756 | void * hdl = dlopen("libdl.so", RTLD_NOW); |
duke@435 | 4757 | if (hdl) |
duke@435 | 4758 | dladdr1_func = CAST_TO_FN_PTR(dladdr1_func_type, dlsym(hdl, "dladdr1")); |
duke@435 | 4759 | |
duke@435 | 4760 | // (Solaris only) this switches to calls that actually do locking. |
duke@435 | 4761 | ThreadCritical::initialize(); |
duke@435 | 4762 | |
duke@435 | 4763 | main_thread = thr_self(); |
duke@435 | 4764 | |
duke@435 | 4765 | // Constant minimum stack size allowed. It must be at least |
duke@435 | 4766 | // the minimum of what the OS supports (thr_min_stack()), and |
duke@435 | 4767 | // enough to allow the thread to get to user bytecode execution. |
duke@435 | 4768 | Solaris::min_stack_allowed = MAX2(thr_min_stack(), Solaris::min_stack_allowed); |
duke@435 | 4769 | // If the pagesize of the VM is greater than 8K determine the appropriate |
duke@435 | 4770 | // number of initial guard pages. The user can change this with the |
duke@435 | 4771 | // command line arguments, if needed. |
duke@435 | 4772 | if (vm_page_size() > 8*K) { |
duke@435 | 4773 | StackYellowPages = 1; |
duke@435 | 4774 | StackRedPages = 1; |
duke@435 | 4775 | StackShadowPages = round_to((StackShadowPages*8*K), vm_page_size()) / vm_page_size(); |
duke@435 | 4776 | } |
duke@435 | 4777 | } |
duke@435 | 4778 | |
duke@435 | 4779 | // To install functions for atexit system call |
duke@435 | 4780 | extern "C" { |
duke@435 | 4781 | static void perfMemory_exit_helper() { |
duke@435 | 4782 | perfMemory_exit(); |
duke@435 | 4783 | } |
duke@435 | 4784 | } |
duke@435 | 4785 | |
duke@435 | 4786 | // this is called _after_ the global arguments have been parsed |
duke@435 | 4787 | jint os::init_2(void) { |
duke@435 | 4788 | // try to enable extended file IO ASAP, see 6431278 |
duke@435 | 4789 | os::Solaris::try_enable_extended_io(); |
duke@435 | 4790 | |
duke@435 | 4791 | // Allocate a single page and mark it as readable for safepoint polling. Also |
duke@435 | 4792 | // use this first mmap call to check support for MAP_ALIGN. |
duke@435 | 4793 | address polling_page = (address)Solaris::mmap_chunk((char*)page_size, |
duke@435 | 4794 | page_size, |
duke@435 | 4795 | MAP_PRIVATE | MAP_ALIGN, |
duke@435 | 4796 | PROT_READ); |
duke@435 | 4797 | if (polling_page == NULL) { |
duke@435 | 4798 | has_map_align = false; |
duke@435 | 4799 | polling_page = (address)Solaris::mmap_chunk(NULL, page_size, MAP_PRIVATE, |
duke@435 | 4800 | PROT_READ); |
duke@435 | 4801 | } |
duke@435 | 4802 | |
duke@435 | 4803 | os::set_polling_page(polling_page); |
duke@435 | 4804 | |
duke@435 | 4805 | #ifndef PRODUCT |
duke@435 | 4806 | if( Verbose && PrintMiscellaneous ) |
duke@435 | 4807 | tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page); |
duke@435 | 4808 | #endif |
duke@435 | 4809 | |
duke@435 | 4810 | if (!UseMembar) { |
duke@435 | 4811 | address mem_serialize_page = (address)Solaris::mmap_chunk( NULL, page_size, MAP_PRIVATE, PROT_READ | PROT_WRITE ); |
duke@435 | 4812 | guarantee( mem_serialize_page != NULL, "mmap Failed for memory serialize page"); |
duke@435 | 4813 | os::set_memory_serialize_page( mem_serialize_page ); |
duke@435 | 4814 | |
duke@435 | 4815 | #ifndef PRODUCT |
duke@435 | 4816 | if(Verbose && PrintMiscellaneous) |
duke@435 | 4817 | tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page); |
duke@435 | 4818 | #endif |
duke@435 | 4819 | } |
duke@435 | 4820 | |
duke@435 | 4821 | FLAG_SET_DEFAULT(UseLargePages, os::large_page_init()); |
duke@435 | 4822 | |
duke@435 | 4823 | // Check minimum allowable stack size for thread creation and to initialize |
duke@435 | 4824 | // the java system classes, including StackOverflowError - depends on page |
duke@435 | 4825 | // size. Add a page for compiler2 recursion in main thread. |
duke@435 | 4826 | // Add in BytesPerWord times page size to account for VM stack during |
duke@435 | 4827 | // class initialization depending on 32 or 64 bit VM. |
duke@435 | 4828 | guarantee((Solaris::min_stack_allowed >= |
duke@435 | 4829 | (StackYellowPages+StackRedPages+StackShadowPages+BytesPerWord |
duke@435 | 4830 | COMPILER2_PRESENT(+1)) * page_size), |
duke@435 | 4831 | "need to increase Solaris::min_stack_allowed on this platform"); |
duke@435 | 4832 | |
duke@435 | 4833 | size_t threadStackSizeInBytes = ThreadStackSize * K; |
duke@435 | 4834 | if (threadStackSizeInBytes != 0 && |
duke@435 | 4835 | threadStackSizeInBytes < Solaris::min_stack_allowed) { |
duke@435 | 4836 | tty->print_cr("\nThe stack size specified is too small, Specify at least %dk", |
duke@435 | 4837 | Solaris::min_stack_allowed/K); |
duke@435 | 4838 | return JNI_ERR; |
duke@435 | 4839 | } |
duke@435 | 4840 | |
duke@435 | 4841 | // For 64kbps there will be a 64kb page size, which makes |
duke@435 | 4842 | // the usable default stack size quite a bit less. Increase the |
duke@435 | 4843 | // stack for 64kb (or any > than 8kb) pages, this increases |
duke@435 | 4844 | // virtual memory fragmentation (since we're not creating the |
duke@435 | 4845 | // stack on a power of 2 boundary. The real fix for this |
duke@435 | 4846 | // should be to fix the guard page mechanism. |
duke@435 | 4847 | |
duke@435 | 4848 | if (vm_page_size() > 8*K) { |
duke@435 | 4849 | threadStackSizeInBytes = (threadStackSizeInBytes != 0) |
duke@435 | 4850 | ? threadStackSizeInBytes + |
duke@435 | 4851 | ((StackYellowPages + StackRedPages) * vm_page_size()) |
duke@435 | 4852 | : 0; |
duke@435 | 4853 | ThreadStackSize = threadStackSizeInBytes/K; |
duke@435 | 4854 | } |
duke@435 | 4855 | |
duke@435 | 4856 | // Make the stack size a multiple of the page size so that |
duke@435 | 4857 | // the yellow/red zones can be guarded. |
duke@435 | 4858 | JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes, |
duke@435 | 4859 | vm_page_size())); |
duke@435 | 4860 | |
duke@435 | 4861 | Solaris::libthread_init(); |
iveresov@897 | 4862 | |
duke@435 | 4863 | if (UseNUMA) { |
iveresov@897 | 4864 | if (!Solaris::liblgrp_init()) { |
iveresov@897 | 4865 | UseNUMA = false; |
iveresov@897 | 4866 | } else { |
iveresov@897 | 4867 | size_t lgrp_limit = os::numa_get_groups_num(); |
iveresov@897 | 4868 | int *lgrp_ids = NEW_C_HEAP_ARRAY(int, lgrp_limit); |
iveresov@897 | 4869 | size_t lgrp_num = os::numa_get_leaf_groups(lgrp_ids, lgrp_limit); |
iveresov@897 | 4870 | FREE_C_HEAP_ARRAY(int, lgrp_ids); |
iveresov@897 | 4871 | if (lgrp_num < 2) { |
iveresov@897 | 4872 | // There's only one locality group, disable NUMA. |
iveresov@897 | 4873 | UseNUMA = false; |
iveresov@897 | 4874 | } |
iveresov@897 | 4875 | } |
iveresov@897 | 4876 | if (!UseNUMA && ForceNUMA) { |
iveresov@897 | 4877 | UseNUMA = true; |
iveresov@897 | 4878 | } |
iveresov@897 | 4879 | } |
iveresov@897 | 4880 | |
duke@435 | 4881 | Solaris::signal_sets_init(); |
duke@435 | 4882 | Solaris::init_signal_mem(); |
duke@435 | 4883 | Solaris::install_signal_handlers(); |
duke@435 | 4884 | |
duke@435 | 4885 | if (libjsigversion < JSIG_VERSION_1_4_1) { |
duke@435 | 4886 | Maxlibjsigsigs = OLDMAXSIGNUM; |
duke@435 | 4887 | } |
duke@435 | 4888 | |
duke@435 | 4889 | // initialize synchronization primitives to use either thread or |
duke@435 | 4890 | // lwp synchronization (controlled by UseLWPSynchronization) |
duke@435 | 4891 | Solaris::synchronization_init(); |
duke@435 | 4892 | |
duke@435 | 4893 | if (MaxFDLimit) { |
duke@435 | 4894 | // set the number of file descriptors to max. print out error |
duke@435 | 4895 | // if getrlimit/setrlimit fails but continue regardless. |
duke@435 | 4896 | struct rlimit nbr_files; |
duke@435 | 4897 | int status = getrlimit(RLIMIT_NOFILE, &nbr_files); |
duke@435 | 4898 | if (status != 0) { |
duke@435 | 4899 | if (PrintMiscellaneous && (Verbose || WizardMode)) |
duke@435 | 4900 | perror("os::init_2 getrlimit failed"); |
duke@435 | 4901 | } else { |
duke@435 | 4902 | nbr_files.rlim_cur = nbr_files.rlim_max; |
duke@435 | 4903 | status = setrlimit(RLIMIT_NOFILE, &nbr_files); |
duke@435 | 4904 | if (status != 0) { |
duke@435 | 4905 | if (PrintMiscellaneous && (Verbose || WizardMode)) |
duke@435 | 4906 | perror("os::init_2 setrlimit failed"); |
duke@435 | 4907 | } |
duke@435 | 4908 | } |
duke@435 | 4909 | } |
duke@435 | 4910 | |
duke@435 | 4911 | // Initialize HPI. |
duke@435 | 4912 | jint hpi_result = hpi::initialize(); |
duke@435 | 4913 | if (hpi_result != JNI_OK) { |
duke@435 | 4914 | tty->print_cr("There was an error trying to initialize the HPI library."); |
duke@435 | 4915 | return hpi_result; |
duke@435 | 4916 | } |
duke@435 | 4917 | |
duke@435 | 4918 | // Calculate theoretical max. size of Threads to guard gainst |
duke@435 | 4919 | // artifical out-of-memory situations, where all available address- |
duke@435 | 4920 | // space has been reserved by thread stacks. Default stack size is 1Mb. |
duke@435 | 4921 | size_t pre_thread_stack_size = (JavaThread::stack_size_at_create()) ? |
duke@435 | 4922 | JavaThread::stack_size_at_create() : (1*K*K); |
duke@435 | 4923 | assert(pre_thread_stack_size != 0, "Must have a stack"); |
duke@435 | 4924 | // Solaris has a maximum of 4Gb of user programs. Calculate the thread limit when |
duke@435 | 4925 | // we should start doing Virtual Memory banging. Currently when the threads will |
duke@435 | 4926 | // have used all but 200Mb of space. |
duke@435 | 4927 | size_t max_address_space = ((unsigned int)4 * K * K * K) - (200 * K * K); |
duke@435 | 4928 | Solaris::_os_thread_limit = max_address_space / pre_thread_stack_size; |
duke@435 | 4929 | |
duke@435 | 4930 | // at-exit methods are called in the reverse order of their registration. |
duke@435 | 4931 | // In Solaris 7 and earlier, atexit functions are called on return from |
duke@435 | 4932 | // main or as a result of a call to exit(3C). There can be only 32 of |
duke@435 | 4933 | // these functions registered and atexit() does not set errno. In Solaris |
duke@435 | 4934 | // 8 and later, there is no limit to the number of functions registered |
duke@435 | 4935 | // and atexit() sets errno. In addition, in Solaris 8 and later, atexit |
duke@435 | 4936 | // functions are called upon dlclose(3DL) in addition to return from main |
duke@435 | 4937 | // and exit(3C). |
duke@435 | 4938 | |
duke@435 | 4939 | if (PerfAllowAtExitRegistration) { |
duke@435 | 4940 | // only register atexit functions if PerfAllowAtExitRegistration is set. |
duke@435 | 4941 | // atexit functions can be delayed until process exit time, which |
duke@435 | 4942 | // can be problematic for embedded VM situations. Embedded VMs should |
duke@435 | 4943 | // call DestroyJavaVM() to assure that VM resources are released. |
duke@435 | 4944 | |
duke@435 | 4945 | // note: perfMemory_exit_helper atexit function may be removed in |
duke@435 | 4946 | // the future if the appropriate cleanup code can be added to the |
duke@435 | 4947 | // VM_Exit VMOperation's doit method. |
duke@435 | 4948 | if (atexit(perfMemory_exit_helper) != 0) { |
duke@435 | 4949 | warning("os::init2 atexit(perfMemory_exit_helper) failed"); |
duke@435 | 4950 | } |
duke@435 | 4951 | } |
duke@435 | 4952 | |
duke@435 | 4953 | // Init pset_loadavg function pointer |
duke@435 | 4954 | init_pset_getloadavg_ptr(); |
duke@435 | 4955 | |
duke@435 | 4956 | return JNI_OK; |
duke@435 | 4957 | } |
duke@435 | 4958 | |
duke@435 | 4959 | |
duke@435 | 4960 | // Mark the polling page as unreadable |
duke@435 | 4961 | void os::make_polling_page_unreadable(void) { |
duke@435 | 4962 | if( mprotect((char *)_polling_page, page_size, PROT_NONE) != 0 ) |
duke@435 | 4963 | fatal("Could not disable polling page"); |
duke@435 | 4964 | }; |
duke@435 | 4965 | |
duke@435 | 4966 | // Mark the polling page as readable |
duke@435 | 4967 | void os::make_polling_page_readable(void) { |
duke@435 | 4968 | if( mprotect((char *)_polling_page, page_size, PROT_READ) != 0 ) |
duke@435 | 4969 | fatal("Could not enable polling page"); |
duke@435 | 4970 | }; |
duke@435 | 4971 | |
duke@435 | 4972 | // OS interface. |
duke@435 | 4973 | |
duke@435 | 4974 | int os::stat(const char *path, struct stat *sbuf) { |
duke@435 | 4975 | char pathbuf[MAX_PATH]; |
duke@435 | 4976 | if (strlen(path) > MAX_PATH - 1) { |
duke@435 | 4977 | errno = ENAMETOOLONG; |
duke@435 | 4978 | return -1; |
duke@435 | 4979 | } |
duke@435 | 4980 | hpi::native_path(strcpy(pathbuf, path)); |
duke@435 | 4981 | return ::stat(pathbuf, sbuf); |
duke@435 | 4982 | } |
duke@435 | 4983 | |
duke@435 | 4984 | |
duke@435 | 4985 | bool os::check_heap(bool force) { return true; } |
duke@435 | 4986 | |
duke@435 | 4987 | typedef int (*vsnprintf_t)(char* buf, size_t count, const char* fmt, va_list argptr); |
duke@435 | 4988 | static vsnprintf_t sol_vsnprintf = NULL; |
duke@435 | 4989 | |
duke@435 | 4990 | int local_vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) { |
duke@435 | 4991 | if (!sol_vsnprintf) { |
duke@435 | 4992 | //search for the named symbol in the objects that were loaded after libjvm |
duke@435 | 4993 | void* where = RTLD_NEXT; |
duke@435 | 4994 | if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) |
duke@435 | 4995 | sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); |
duke@435 | 4996 | if (!sol_vsnprintf){ |
duke@435 | 4997 | //search for the named symbol in the objects that were loaded before libjvm |
duke@435 | 4998 | where = RTLD_DEFAULT; |
duke@435 | 4999 | if ((sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "__vsnprintf"))) == NULL) |
duke@435 | 5000 | sol_vsnprintf = CAST_TO_FN_PTR(vsnprintf_t, dlsym(where, "vsnprintf")); |
duke@435 | 5001 | assert(sol_vsnprintf != NULL, "vsnprintf not found"); |
duke@435 | 5002 | } |
duke@435 | 5003 | } |
duke@435 | 5004 | return (*sol_vsnprintf)(buf, count, fmt, argptr); |
duke@435 | 5005 | } |
duke@435 | 5006 | |
duke@435 | 5007 | |
duke@435 | 5008 | // Is a (classpath) directory empty? |
duke@435 | 5009 | bool os::dir_is_empty(const char* path) { |
duke@435 | 5010 | DIR *dir = NULL; |
duke@435 | 5011 | struct dirent *ptr; |
duke@435 | 5012 | |
duke@435 | 5013 | dir = opendir(path); |
duke@435 | 5014 | if (dir == NULL) return true; |
duke@435 | 5015 | |
duke@435 | 5016 | /* Scan the directory */ |
duke@435 | 5017 | bool result = true; |
duke@435 | 5018 | char buf[sizeof(struct dirent) + MAX_PATH]; |
duke@435 | 5019 | struct dirent *dbuf = (struct dirent *) buf; |
duke@435 | 5020 | while (result && (ptr = readdir(dir, dbuf)) != NULL) { |
duke@435 | 5021 | if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) { |
duke@435 | 5022 | result = false; |
duke@435 | 5023 | } |
duke@435 | 5024 | } |
duke@435 | 5025 | closedir(dir); |
duke@435 | 5026 | return result; |
duke@435 | 5027 | } |
duke@435 | 5028 | |
duke@435 | 5029 | // create binary file, rewriting existing file if required |
duke@435 | 5030 | int os::create_binary_file(const char* path, bool rewrite_existing) { |
duke@435 | 5031 | int oflags = O_WRONLY | O_CREAT; |
duke@435 | 5032 | if (!rewrite_existing) { |
duke@435 | 5033 | oflags |= O_EXCL; |
duke@435 | 5034 | } |
duke@435 | 5035 | return ::open64(path, oflags, S_IREAD | S_IWRITE); |
duke@435 | 5036 | } |
duke@435 | 5037 | |
duke@435 | 5038 | // return current position of file pointer |
duke@435 | 5039 | jlong os::current_file_offset(int fd) { |
duke@435 | 5040 | return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR); |
duke@435 | 5041 | } |
duke@435 | 5042 | |
duke@435 | 5043 | // move file pointer to the specified offset |
duke@435 | 5044 | jlong os::seek_to_file_offset(int fd, jlong offset) { |
duke@435 | 5045 | return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET); |
duke@435 | 5046 | } |
duke@435 | 5047 | |
duke@435 | 5048 | // Map a block of memory. |
duke@435 | 5049 | char* os::map_memory(int fd, const char* file_name, size_t file_offset, |
duke@435 | 5050 | char *addr, size_t bytes, bool read_only, |
duke@435 | 5051 | bool allow_exec) { |
duke@435 | 5052 | int prot; |
duke@435 | 5053 | int flags; |
duke@435 | 5054 | |
duke@435 | 5055 | if (read_only) { |
duke@435 | 5056 | prot = PROT_READ; |
duke@435 | 5057 | flags = MAP_SHARED; |
duke@435 | 5058 | } else { |
duke@435 | 5059 | prot = PROT_READ | PROT_WRITE; |
duke@435 | 5060 | flags = MAP_PRIVATE; |
duke@435 | 5061 | } |
duke@435 | 5062 | |
duke@435 | 5063 | if (allow_exec) { |
duke@435 | 5064 | prot |= PROT_EXEC; |
duke@435 | 5065 | } |
duke@435 | 5066 | |
duke@435 | 5067 | if (addr != NULL) { |
duke@435 | 5068 | flags |= MAP_FIXED; |
duke@435 | 5069 | } |
duke@435 | 5070 | |
duke@435 | 5071 | char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags, |
duke@435 | 5072 | fd, file_offset); |
duke@435 | 5073 | if (mapped_address == MAP_FAILED) { |
duke@435 | 5074 | return NULL; |
duke@435 | 5075 | } |
duke@435 | 5076 | return mapped_address; |
duke@435 | 5077 | } |
duke@435 | 5078 | |
duke@435 | 5079 | |
duke@435 | 5080 | // Remap a block of memory. |
duke@435 | 5081 | char* os::remap_memory(int fd, const char* file_name, size_t file_offset, |
duke@435 | 5082 | char *addr, size_t bytes, bool read_only, |
duke@435 | 5083 | bool allow_exec) { |
duke@435 | 5084 | // same as map_memory() on this OS |
duke@435 | 5085 | return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only, |
duke@435 | 5086 | allow_exec); |
duke@435 | 5087 | } |
duke@435 | 5088 | |
duke@435 | 5089 | |
duke@435 | 5090 | // Unmap a block of memory. |
duke@435 | 5091 | bool os::unmap_memory(char* addr, size_t bytes) { |
duke@435 | 5092 | return munmap(addr, bytes) == 0; |
duke@435 | 5093 | } |
duke@435 | 5094 | |
duke@435 | 5095 | void os::pause() { |
duke@435 | 5096 | char filename[MAX_PATH]; |
duke@435 | 5097 | if (PauseAtStartupFile && PauseAtStartupFile[0]) { |
duke@435 | 5098 | jio_snprintf(filename, MAX_PATH, PauseAtStartupFile); |
duke@435 | 5099 | } else { |
duke@435 | 5100 | jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id()); |
duke@435 | 5101 | } |
duke@435 | 5102 | |
duke@435 | 5103 | int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666); |
duke@435 | 5104 | if (fd != -1) { |
duke@435 | 5105 | struct stat buf; |
duke@435 | 5106 | close(fd); |
duke@435 | 5107 | while (::stat(filename, &buf) == 0) { |
duke@435 | 5108 | (void)::poll(NULL, 0, 100); |
duke@435 | 5109 | } |
duke@435 | 5110 | } else { |
duke@435 | 5111 | jio_fprintf(stderr, |
duke@435 | 5112 | "Could not open pause file '%s', continuing immediately.\n", filename); |
duke@435 | 5113 | } |
duke@435 | 5114 | } |
duke@435 | 5115 | |
duke@435 | 5116 | #ifndef PRODUCT |
duke@435 | 5117 | #ifdef INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS |
duke@435 | 5118 | // Turn this on if you need to trace synch operations. |
duke@435 | 5119 | // Set RECORD_SYNCH_LIMIT to a large-enough value, |
duke@435 | 5120 | // and call record_synch_enable and record_synch_disable |
duke@435 | 5121 | // around the computation of interest. |
duke@435 | 5122 | |
duke@435 | 5123 | void record_synch(char* name, bool returning); // defined below |
duke@435 | 5124 | |
duke@435 | 5125 | class RecordSynch { |
duke@435 | 5126 | char* _name; |
duke@435 | 5127 | public: |
duke@435 | 5128 | RecordSynch(char* name) :_name(name) |
duke@435 | 5129 | { record_synch(_name, false); } |
duke@435 | 5130 | ~RecordSynch() { record_synch(_name, true); } |
duke@435 | 5131 | }; |
duke@435 | 5132 | |
duke@435 | 5133 | #define CHECK_SYNCH_OP(ret, name, params, args, inner) \ |
duke@435 | 5134 | extern "C" ret name params { \ |
duke@435 | 5135 | typedef ret name##_t params; \ |
duke@435 | 5136 | static name##_t* implem = NULL; \ |
duke@435 | 5137 | static int callcount = 0; \ |
duke@435 | 5138 | if (implem == NULL) { \ |
duke@435 | 5139 | implem = (name##_t*) dlsym(RTLD_NEXT, #name); \ |
duke@435 | 5140 | if (implem == NULL) fatal(dlerror()); \ |
duke@435 | 5141 | } \ |
duke@435 | 5142 | ++callcount; \ |
duke@435 | 5143 | RecordSynch _rs(#name); \ |
duke@435 | 5144 | inner; \ |
duke@435 | 5145 | return implem args; \ |
duke@435 | 5146 | } |
duke@435 | 5147 | // in dbx, examine callcounts this way: |
duke@435 | 5148 | // for n in $(eval whereis callcount | awk '{print $2}'); do print $n; done |
duke@435 | 5149 | |
duke@435 | 5150 | #define CHECK_POINTER_OK(p) \ |
duke@435 | 5151 | (Universe::perm_gen() == NULL || !Universe::is_reserved_heap((oop)(p))) |
duke@435 | 5152 | #define CHECK_MU \ |
duke@435 | 5153 | if (!CHECK_POINTER_OK(mu)) fatal("Mutex must be in C heap only."); |
duke@435 | 5154 | #define CHECK_CV \ |
duke@435 | 5155 | if (!CHECK_POINTER_OK(cv)) fatal("Condvar must be in C heap only."); |
duke@435 | 5156 | #define CHECK_P(p) \ |
duke@435 | 5157 | if (!CHECK_POINTER_OK(p)) fatal(false, "Pointer must be in C heap only."); |
duke@435 | 5158 | |
duke@435 | 5159 | #define CHECK_MUTEX(mutex_op) \ |
duke@435 | 5160 | CHECK_SYNCH_OP(int, mutex_op, (mutex_t *mu), (mu), CHECK_MU); |
duke@435 | 5161 | |
duke@435 | 5162 | CHECK_MUTEX( mutex_lock) |
duke@435 | 5163 | CHECK_MUTEX( _mutex_lock) |
duke@435 | 5164 | CHECK_MUTEX( mutex_unlock) |
duke@435 | 5165 | CHECK_MUTEX(_mutex_unlock) |
duke@435 | 5166 | CHECK_MUTEX( mutex_trylock) |
duke@435 | 5167 | CHECK_MUTEX(_mutex_trylock) |
duke@435 | 5168 | |
duke@435 | 5169 | #define CHECK_COND(cond_op) \ |
duke@435 | 5170 | CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu), (cv, mu), CHECK_MU;CHECK_CV); |
duke@435 | 5171 | |
duke@435 | 5172 | CHECK_COND( cond_wait); |
duke@435 | 5173 | CHECK_COND(_cond_wait); |
duke@435 | 5174 | CHECK_COND(_cond_wait_cancel); |
duke@435 | 5175 | |
duke@435 | 5176 | #define CHECK_COND2(cond_op) \ |
duke@435 | 5177 | CHECK_SYNCH_OP(int, cond_op, (cond_t *cv, mutex_t *mu, timestruc_t* ts), (cv, mu, ts), CHECK_MU;CHECK_CV); |
duke@435 | 5178 | |
duke@435 | 5179 | CHECK_COND2( cond_timedwait); |
duke@435 | 5180 | CHECK_COND2(_cond_timedwait); |
duke@435 | 5181 | CHECK_COND2(_cond_timedwait_cancel); |
duke@435 | 5182 | |
duke@435 | 5183 | // do the _lwp_* versions too |
duke@435 | 5184 | #define mutex_t lwp_mutex_t |
duke@435 | 5185 | #define cond_t lwp_cond_t |
duke@435 | 5186 | CHECK_MUTEX( _lwp_mutex_lock) |
duke@435 | 5187 | CHECK_MUTEX( _lwp_mutex_unlock) |
duke@435 | 5188 | CHECK_MUTEX( _lwp_mutex_trylock) |
duke@435 | 5189 | CHECK_MUTEX( __lwp_mutex_lock) |
duke@435 | 5190 | CHECK_MUTEX( __lwp_mutex_unlock) |
duke@435 | 5191 | CHECK_MUTEX( __lwp_mutex_trylock) |
duke@435 | 5192 | CHECK_MUTEX(___lwp_mutex_lock) |
duke@435 | 5193 | CHECK_MUTEX(___lwp_mutex_unlock) |
duke@435 | 5194 | |
duke@435 | 5195 | CHECK_COND( _lwp_cond_wait); |
duke@435 | 5196 | CHECK_COND( __lwp_cond_wait); |
duke@435 | 5197 | CHECK_COND(___lwp_cond_wait); |
duke@435 | 5198 | |
duke@435 | 5199 | CHECK_COND2( _lwp_cond_timedwait); |
duke@435 | 5200 | CHECK_COND2( __lwp_cond_timedwait); |
duke@435 | 5201 | #undef mutex_t |
duke@435 | 5202 | #undef cond_t |
duke@435 | 5203 | |
duke@435 | 5204 | CHECK_SYNCH_OP(int, _lwp_suspend2, (int lwp, int *n), (lwp, n), 0); |
duke@435 | 5205 | CHECK_SYNCH_OP(int,__lwp_suspend2, (int lwp, int *n), (lwp, n), 0); |
duke@435 | 5206 | CHECK_SYNCH_OP(int, _lwp_kill, (int lwp, int n), (lwp, n), 0); |
duke@435 | 5207 | CHECK_SYNCH_OP(int,__lwp_kill, (int lwp, int n), (lwp, n), 0); |
duke@435 | 5208 | CHECK_SYNCH_OP(int, _lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); |
duke@435 | 5209 | CHECK_SYNCH_OP(int,__lwp_sema_wait, (lwp_sema_t* p), (p), CHECK_P(p)); |
duke@435 | 5210 | CHECK_SYNCH_OP(int, _lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); |
duke@435 | 5211 | CHECK_SYNCH_OP(int,__lwp_cond_broadcast, (lwp_cond_t* cv), (cv), CHECK_CV); |
duke@435 | 5212 | |
duke@435 | 5213 | |
duke@435 | 5214 | // recording machinery: |
duke@435 | 5215 | |
duke@435 | 5216 | enum { RECORD_SYNCH_LIMIT = 200 }; |
duke@435 | 5217 | char* record_synch_name[RECORD_SYNCH_LIMIT]; |
duke@435 | 5218 | void* record_synch_arg0ptr[RECORD_SYNCH_LIMIT]; |
duke@435 | 5219 | bool record_synch_returning[RECORD_SYNCH_LIMIT]; |
duke@435 | 5220 | thread_t record_synch_thread[RECORD_SYNCH_LIMIT]; |
duke@435 | 5221 | int record_synch_count = 0; |
duke@435 | 5222 | bool record_synch_enabled = false; |
duke@435 | 5223 | |
duke@435 | 5224 | // in dbx, examine recorded data this way: |
duke@435 | 5225 | // for n in name arg0ptr returning thread; do print record_synch_$n[0..record_synch_count-1]; done |
duke@435 | 5226 | |
duke@435 | 5227 | void record_synch(char* name, bool returning) { |
duke@435 | 5228 | if (record_synch_enabled) { |
duke@435 | 5229 | if (record_synch_count < RECORD_SYNCH_LIMIT) { |
duke@435 | 5230 | record_synch_name[record_synch_count] = name; |
duke@435 | 5231 | record_synch_returning[record_synch_count] = returning; |
duke@435 | 5232 | record_synch_thread[record_synch_count] = thr_self(); |
duke@435 | 5233 | record_synch_arg0ptr[record_synch_count] = &name; |
duke@435 | 5234 | record_synch_count++; |
duke@435 | 5235 | } |
duke@435 | 5236 | // put more checking code here: |
duke@435 | 5237 | // ... |
duke@435 | 5238 | } |
duke@435 | 5239 | } |
duke@435 | 5240 | |
duke@435 | 5241 | void record_synch_enable() { |
duke@435 | 5242 | // start collecting trace data, if not already doing so |
duke@435 | 5243 | if (!record_synch_enabled) record_synch_count = 0; |
duke@435 | 5244 | record_synch_enabled = true; |
duke@435 | 5245 | } |
duke@435 | 5246 | |
duke@435 | 5247 | void record_synch_disable() { |
duke@435 | 5248 | // stop collecting trace data |
duke@435 | 5249 | record_synch_enabled = false; |
duke@435 | 5250 | } |
duke@435 | 5251 | |
duke@435 | 5252 | #endif // INTERPOSE_ON_SYSTEM_SYNCH_FUNCTIONS |
duke@435 | 5253 | #endif // PRODUCT |
duke@435 | 5254 | |
duke@435 | 5255 | const intptr_t thr_time_off = (intptr_t)(&((prusage_t *)(NULL))->pr_utime); |
duke@435 | 5256 | const intptr_t thr_time_size = (intptr_t)(&((prusage_t *)(NULL))->pr_ttime) - |
duke@435 | 5257 | (intptr_t)(&((prusage_t *)(NULL))->pr_utime); |
duke@435 | 5258 | |
duke@435 | 5259 | |
duke@435 | 5260 | // JVMTI & JVM monitoring and management support |
duke@435 | 5261 | // The thread_cpu_time() and current_thread_cpu_time() are only |
duke@435 | 5262 | // supported if is_thread_cpu_time_supported() returns true. |
duke@435 | 5263 | // They are not supported on Solaris T1. |
duke@435 | 5264 | |
duke@435 | 5265 | // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool) |
duke@435 | 5266 | // are used by JVM M&M and JVMTI to get user+sys or user CPU time |
duke@435 | 5267 | // of a thread. |
duke@435 | 5268 | // |
duke@435 | 5269 | // current_thread_cpu_time() and thread_cpu_time(Thread *) |
duke@435 | 5270 | // returns the fast estimate available on the platform. |
duke@435 | 5271 | |
duke@435 | 5272 | // hrtime_t gethrvtime() return value includes |
duke@435 | 5273 | // user time but does not include system time |
duke@435 | 5274 | jlong os::current_thread_cpu_time() { |
duke@435 | 5275 | return (jlong) gethrvtime(); |
duke@435 | 5276 | } |
duke@435 | 5277 | |
duke@435 | 5278 | jlong os::thread_cpu_time(Thread *thread) { |
duke@435 | 5279 | // return user level CPU time only to be consistent with |
duke@435 | 5280 | // what current_thread_cpu_time returns. |
duke@435 | 5281 | // thread_cpu_time_info() must be changed if this changes |
duke@435 | 5282 | return os::thread_cpu_time(thread, false /* user time only */); |
duke@435 | 5283 | } |
duke@435 | 5284 | |
duke@435 | 5285 | jlong os::current_thread_cpu_time(bool user_sys_cpu_time) { |
duke@435 | 5286 | if (user_sys_cpu_time) { |
duke@435 | 5287 | return os::thread_cpu_time(Thread::current(), user_sys_cpu_time); |
duke@435 | 5288 | } else { |
duke@435 | 5289 | return os::current_thread_cpu_time(); |
duke@435 | 5290 | } |
duke@435 | 5291 | } |
duke@435 | 5292 | |
duke@435 | 5293 | jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) { |
duke@435 | 5294 | char proc_name[64]; |
duke@435 | 5295 | int count; |
duke@435 | 5296 | prusage_t prusage; |
duke@435 | 5297 | jlong lwp_time; |
duke@435 | 5298 | int fd; |
duke@435 | 5299 | |
duke@435 | 5300 | sprintf(proc_name, "/proc/%d/lwp/%d/lwpusage", |
duke@435 | 5301 | getpid(), |
duke@435 | 5302 | thread->osthread()->lwp_id()); |
duke@435 | 5303 | fd = open(proc_name, O_RDONLY); |
duke@435 | 5304 | if ( fd == -1 ) return -1; |
duke@435 | 5305 | |
duke@435 | 5306 | do { |
duke@435 | 5307 | count = pread(fd, |
duke@435 | 5308 | (void *)&prusage.pr_utime, |
duke@435 | 5309 | thr_time_size, |
duke@435 | 5310 | thr_time_off); |
duke@435 | 5311 | } while (count < 0 && errno == EINTR); |
duke@435 | 5312 | close(fd); |
duke@435 | 5313 | if ( count < 0 ) return -1; |
duke@435 | 5314 | |
duke@435 | 5315 | if (user_sys_cpu_time) { |
duke@435 | 5316 | // user + system CPU time |
duke@435 | 5317 | lwp_time = (((jlong)prusage.pr_stime.tv_sec + |
duke@435 | 5318 | (jlong)prusage.pr_utime.tv_sec) * (jlong)1000000000) + |
duke@435 | 5319 | (jlong)prusage.pr_stime.tv_nsec + |
duke@435 | 5320 | (jlong)prusage.pr_utime.tv_nsec; |
duke@435 | 5321 | } else { |
duke@435 | 5322 | // user level CPU time only |
duke@435 | 5323 | lwp_time = ((jlong)prusage.pr_utime.tv_sec * (jlong)1000000000) + |
duke@435 | 5324 | (jlong)prusage.pr_utime.tv_nsec; |
duke@435 | 5325 | } |
duke@435 | 5326 | |
duke@435 | 5327 | return(lwp_time); |
duke@435 | 5328 | } |
duke@435 | 5329 | |
duke@435 | 5330 | void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { |
duke@435 | 5331 | info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits |
duke@435 | 5332 | info_ptr->may_skip_backward = false; // elapsed time not wall time |
duke@435 | 5333 | info_ptr->may_skip_forward = false; // elapsed time not wall time |
duke@435 | 5334 | info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned |
duke@435 | 5335 | } |
duke@435 | 5336 | |
duke@435 | 5337 | void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) { |
duke@435 | 5338 | info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits |
duke@435 | 5339 | info_ptr->may_skip_backward = false; // elapsed time not wall time |
duke@435 | 5340 | info_ptr->may_skip_forward = false; // elapsed time not wall time |
duke@435 | 5341 | info_ptr->kind = JVMTI_TIMER_USER_CPU; // only user time is returned |
duke@435 | 5342 | } |
duke@435 | 5343 | |
duke@435 | 5344 | bool os::is_thread_cpu_time_supported() { |
duke@435 | 5345 | if ( os::Solaris::T2_libthread() || UseBoundThreads ) { |
duke@435 | 5346 | return true; |
duke@435 | 5347 | } else { |
duke@435 | 5348 | return false; |
duke@435 | 5349 | } |
duke@435 | 5350 | } |
duke@435 | 5351 | |
duke@435 | 5352 | // System loadavg support. Returns -1 if load average cannot be obtained. |
duke@435 | 5353 | // Return the load average for our processor set if the primitive exists |
duke@435 | 5354 | // (Solaris 9 and later). Otherwise just return system wide loadavg. |
duke@435 | 5355 | int os::loadavg(double loadavg[], int nelem) { |
duke@435 | 5356 | if (pset_getloadavg_ptr != NULL) { |
duke@435 | 5357 | return (*pset_getloadavg_ptr)(PS_MYID, loadavg, nelem); |
duke@435 | 5358 | } else { |
duke@435 | 5359 | return ::getloadavg(loadavg, nelem); |
duke@435 | 5360 | } |
duke@435 | 5361 | } |
duke@435 | 5362 | |
duke@435 | 5363 | //--------------------------------------------------------------------------------- |
duke@435 | 5364 | #ifndef PRODUCT |
duke@435 | 5365 | |
duke@435 | 5366 | static address same_page(address x, address y) { |
duke@435 | 5367 | intptr_t page_bits = -os::vm_page_size(); |
duke@435 | 5368 | if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits)) |
duke@435 | 5369 | return x; |
duke@435 | 5370 | else if (x > y) |
duke@435 | 5371 | return (address)(intptr_t(y) | ~page_bits) + 1; |
duke@435 | 5372 | else |
duke@435 | 5373 | return (address)(intptr_t(y) & page_bits); |
duke@435 | 5374 | } |
duke@435 | 5375 | |
duke@435 | 5376 | bool os::find(address addr) { |
duke@435 | 5377 | Dl_info dlinfo; |
duke@435 | 5378 | memset(&dlinfo, 0, sizeof(dlinfo)); |
duke@435 | 5379 | if (dladdr(addr, &dlinfo)) { |
duke@435 | 5380 | #ifdef _LP64 |
duke@435 | 5381 | tty->print("0x%016lx: ", addr); |
duke@435 | 5382 | #else |
duke@435 | 5383 | tty->print("0x%08x: ", addr); |
duke@435 | 5384 | #endif |
duke@435 | 5385 | if (dlinfo.dli_sname != NULL) |
duke@435 | 5386 | tty->print("%s+%#lx", dlinfo.dli_sname, addr-(intptr_t)dlinfo.dli_saddr); |
duke@435 | 5387 | else if (dlinfo.dli_fname) |
duke@435 | 5388 | tty->print("<offset %#lx>", addr-(intptr_t)dlinfo.dli_fbase); |
duke@435 | 5389 | else |
duke@435 | 5390 | tty->print("<absolute address>"); |
duke@435 | 5391 | if (dlinfo.dli_fname) tty->print(" in %s", dlinfo.dli_fname); |
duke@435 | 5392 | #ifdef _LP64 |
duke@435 | 5393 | if (dlinfo.dli_fbase) tty->print(" at 0x%016lx", dlinfo.dli_fbase); |
duke@435 | 5394 | #else |
duke@435 | 5395 | if (dlinfo.dli_fbase) tty->print(" at 0x%08x", dlinfo.dli_fbase); |
duke@435 | 5396 | #endif |
duke@435 | 5397 | tty->cr(); |
duke@435 | 5398 | |
duke@435 | 5399 | if (Verbose) { |
duke@435 | 5400 | // decode some bytes around the PC |
duke@435 | 5401 | address begin = same_page(addr-40, addr); |
duke@435 | 5402 | address end = same_page(addr+40, addr); |
duke@435 | 5403 | address lowest = (address) dlinfo.dli_sname; |
duke@435 | 5404 | if (!lowest) lowest = (address) dlinfo.dli_fbase; |
duke@435 | 5405 | if (begin < lowest) begin = lowest; |
duke@435 | 5406 | Dl_info dlinfo2; |
duke@435 | 5407 | if (dladdr(end, &dlinfo2) && dlinfo2.dli_saddr != dlinfo.dli_saddr |
duke@435 | 5408 | && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin) |
duke@435 | 5409 | end = (address) dlinfo2.dli_saddr; |
duke@435 | 5410 | Disassembler::decode(begin, end); |
duke@435 | 5411 | } |
duke@435 | 5412 | return true; |
duke@435 | 5413 | } |
duke@435 | 5414 | return false; |
duke@435 | 5415 | } |
duke@435 | 5416 | |
duke@435 | 5417 | #endif |
duke@435 | 5418 | |
duke@435 | 5419 | |
duke@435 | 5420 | // Following function has been added to support HotSparc's libjvm.so running |
duke@435 | 5421 | // under Solaris production JDK 1.2.2 / 1.3.0. These came from |
duke@435 | 5422 | // src/solaris/hpi/native_threads in the EVM codebase. |
duke@435 | 5423 | // |
duke@435 | 5424 | // NOTE: This is no longer needed in the 1.3.1 and 1.4 production release |
duke@435 | 5425 | // libraries and should thus be removed. We will leave it behind for a while |
duke@435 | 5426 | // until we no longer want to able to run on top of 1.3.0 Solaris production |
duke@435 | 5427 | // JDK. See 4341971. |
duke@435 | 5428 | |
duke@435 | 5429 | #define STACK_SLACK 0x800 |
duke@435 | 5430 | |
duke@435 | 5431 | extern "C" { |
duke@435 | 5432 | intptr_t sysThreadAvailableStackWithSlack() { |
duke@435 | 5433 | stack_t st; |
duke@435 | 5434 | intptr_t retval, stack_top; |
duke@435 | 5435 | retval = thr_stksegment(&st); |
duke@435 | 5436 | assert(retval == 0, "incorrect return value from thr_stksegment"); |
duke@435 | 5437 | assert((address)&st < (address)st.ss_sp, "Invalid stack base returned"); |
duke@435 | 5438 | assert((address)&st > (address)st.ss_sp-st.ss_size, "Invalid stack size returned"); |
duke@435 | 5439 | stack_top=(intptr_t)st.ss_sp-st.ss_size; |
duke@435 | 5440 | return ((intptr_t)&stack_top - stack_top - STACK_SLACK); |
duke@435 | 5441 | } |
duke@435 | 5442 | } |
duke@435 | 5443 | |
duke@435 | 5444 | // Just to get the Kernel build to link on solaris for testing. |
duke@435 | 5445 | |
duke@435 | 5446 | extern "C" { |
duke@435 | 5447 | class ASGCT_CallTrace; |
duke@435 | 5448 | void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext) |
duke@435 | 5449 | KERNEL_RETURN; |
duke@435 | 5450 | } |
duke@435 | 5451 | |
duke@435 | 5452 | |
duke@435 | 5453 | // ObjectMonitor park-unpark infrastructure ... |
duke@435 | 5454 | // |
duke@435 | 5455 | // We implement Solaris and Linux PlatformEvents with the |
duke@435 | 5456 | // obvious condvar-mutex-flag triple. |
duke@435 | 5457 | // Another alternative that works quite well is pipes: |
duke@435 | 5458 | // Each PlatformEvent consists of a pipe-pair. |
duke@435 | 5459 | // The thread associated with the PlatformEvent |
duke@435 | 5460 | // calls park(), which reads from the input end of the pipe. |
duke@435 | 5461 | // Unpark() writes into the other end of the pipe. |
duke@435 | 5462 | // The write-side of the pipe must be set NDELAY. |
duke@435 | 5463 | // Unfortunately pipes consume a large # of handles. |
duke@435 | 5464 | // Native solaris lwp_park() and lwp_unpark() work nicely, too. |
duke@435 | 5465 | // Using pipes for the 1st few threads might be workable, however. |
duke@435 | 5466 | // |
duke@435 | 5467 | // park() is permitted to return spuriously. |
duke@435 | 5468 | // Callers of park() should wrap the call to park() in |
duke@435 | 5469 | // an appropriate loop. A litmus test for the correct |
duke@435 | 5470 | // usage of park is the following: if park() were modified |
duke@435 | 5471 | // to immediately return 0 your code should still work, |
duke@435 | 5472 | // albeit degenerating to a spin loop. |
duke@435 | 5473 | // |
duke@435 | 5474 | // An interesting optimization for park() is to use a trylock() |
duke@435 | 5475 | // to attempt to acquire the mutex. If the trylock() fails |
duke@435 | 5476 | // then we know that a concurrent unpark() operation is in-progress. |
duke@435 | 5477 | // in that case the park() code could simply set _count to 0 |
duke@435 | 5478 | // and return immediately. The subsequent park() operation *might* |
duke@435 | 5479 | // return immediately. That's harmless as the caller of park() is |
duke@435 | 5480 | // expected to loop. By using trylock() we will have avoided a |
duke@435 | 5481 | // avoided a context switch caused by contention on the per-thread mutex. |
duke@435 | 5482 | // |
duke@435 | 5483 | // TODO-FIXME: |
duke@435 | 5484 | // 1. Reconcile Doug's JSR166 j.u.c park-unpark with the |
duke@435 | 5485 | // objectmonitor implementation. |
duke@435 | 5486 | // 2. Collapse the JSR166 parker event, and the |
duke@435 | 5487 | // objectmonitor ParkEvent into a single "Event" construct. |
duke@435 | 5488 | // 3. In park() and unpark() add: |
duke@435 | 5489 | // assert (Thread::current() == AssociatedWith). |
duke@435 | 5490 | // 4. add spurious wakeup injection on a -XX:EarlyParkReturn=N switch. |
duke@435 | 5491 | // 1-out-of-N park() operations will return immediately. |
duke@435 | 5492 | // |
duke@435 | 5493 | // _Event transitions in park() |
duke@435 | 5494 | // -1 => -1 : illegal |
duke@435 | 5495 | // 1 => 0 : pass - return immediately |
duke@435 | 5496 | // 0 => -1 : block |
duke@435 | 5497 | // |
duke@435 | 5498 | // _Event serves as a restricted-range semaphore. |
duke@435 | 5499 | // |
duke@435 | 5500 | // Another possible encoding of _Event would be with |
duke@435 | 5501 | // explicit "PARKED" == 01b and "SIGNALED" == 10b bits. |
duke@435 | 5502 | // |
duke@435 | 5503 | // TODO-FIXME: add DTRACE probes for: |
duke@435 | 5504 | // 1. Tx parks |
duke@435 | 5505 | // 2. Ty unparks Tx |
duke@435 | 5506 | // 3. Tx resumes from park |
duke@435 | 5507 | |
duke@435 | 5508 | |
duke@435 | 5509 | // value determined through experimentation |
duke@435 | 5510 | #define ROUNDINGFIX 11 |
duke@435 | 5511 | |
duke@435 | 5512 | // utility to compute the abstime argument to timedwait. |
duke@435 | 5513 | // TODO-FIXME: switch from compute_abstime() to unpackTime(). |
duke@435 | 5514 | |
duke@435 | 5515 | static timestruc_t* compute_abstime(timestruc_t* abstime, jlong millis) { |
duke@435 | 5516 | // millis is the relative timeout time |
duke@435 | 5517 | // abstime will be the absolute timeout time |
duke@435 | 5518 | if (millis < 0) millis = 0; |
duke@435 | 5519 | struct timeval now; |
duke@435 | 5520 | int status = gettimeofday(&now, NULL); |
duke@435 | 5521 | assert(status == 0, "gettimeofday"); |
duke@435 | 5522 | jlong seconds = millis / 1000; |
duke@435 | 5523 | jlong max_wait_period; |
duke@435 | 5524 | |
duke@435 | 5525 | if (UseLWPSynchronization) { |
duke@435 | 5526 | // forward port of fix for 4275818 (not sleeping long enough) |
duke@435 | 5527 | // There was a bug in Solaris 6, 7 and pre-patch 5 of 8 where |
duke@435 | 5528 | // _lwp_cond_timedwait() used a round_down algorithm rather |
duke@435 | 5529 | // than a round_up. For millis less than our roundfactor |
duke@435 | 5530 | // it rounded down to 0 which doesn't meet the spec. |
duke@435 | 5531 | // For millis > roundfactor we may return a bit sooner, but |
duke@435 | 5532 | // since we can not accurately identify the patch level and |
duke@435 | 5533 | // this has already been fixed in Solaris 9 and 8 we will |
duke@435 | 5534 | // leave it alone rather than always rounding down. |
duke@435 | 5535 | |
duke@435 | 5536 | if (millis > 0 && millis < ROUNDINGFIX) millis = ROUNDINGFIX; |
duke@435 | 5537 | // It appears that when we go directly through Solaris _lwp_cond_timedwait() |
duke@435 | 5538 | // the acceptable max time threshold is smaller than for libthread on 2.5.1 and 2.6 |
duke@435 | 5539 | max_wait_period = 21000000; |
duke@435 | 5540 | } else { |
duke@435 | 5541 | max_wait_period = 50000000; |
duke@435 | 5542 | } |
duke@435 | 5543 | millis %= 1000; |
duke@435 | 5544 | if (seconds > max_wait_period) { // see man cond_timedwait(3T) |
duke@435 | 5545 | seconds = max_wait_period; |
duke@435 | 5546 | } |
duke@435 | 5547 | abstime->tv_sec = now.tv_sec + seconds; |
duke@435 | 5548 | long usec = now.tv_usec + millis * 1000; |
duke@435 | 5549 | if (usec >= 1000000) { |
duke@435 | 5550 | abstime->tv_sec += 1; |
duke@435 | 5551 | usec -= 1000000; |
duke@435 | 5552 | } |
duke@435 | 5553 | abstime->tv_nsec = usec * 1000; |
duke@435 | 5554 | return abstime; |
duke@435 | 5555 | } |
duke@435 | 5556 | |
duke@435 | 5557 | // Test-and-clear _Event, always leaves _Event set to 0, returns immediately. |
duke@435 | 5558 | // Conceptually TryPark() should be equivalent to park(0). |
duke@435 | 5559 | |
duke@435 | 5560 | int os::PlatformEvent::TryPark() { |
duke@435 | 5561 | for (;;) { |
duke@435 | 5562 | const int v = _Event ; |
duke@435 | 5563 | guarantee ((v == 0) || (v == 1), "invariant") ; |
duke@435 | 5564 | if (Atomic::cmpxchg (0, &_Event, v) == v) return v ; |
duke@435 | 5565 | } |
duke@435 | 5566 | } |
duke@435 | 5567 | |
duke@435 | 5568 | void os::PlatformEvent::park() { // AKA: down() |
duke@435 | 5569 | // Invariant: Only the thread associated with the Event/PlatformEvent |
duke@435 | 5570 | // may call park(). |
duke@435 | 5571 | int v ; |
duke@435 | 5572 | for (;;) { |
duke@435 | 5573 | v = _Event ; |
duke@435 | 5574 | if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; |
duke@435 | 5575 | } |
duke@435 | 5576 | guarantee (v >= 0, "invariant") ; |
duke@435 | 5577 | if (v == 0) { |
duke@435 | 5578 | // Do this the hard way by blocking ... |
duke@435 | 5579 | // See http://monaco.sfbay/detail.jsf?cr=5094058. |
duke@435 | 5580 | // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. |
duke@435 | 5581 | // Only for SPARC >= V8PlusA |
duke@435 | 5582 | #if defined(__sparc) && defined(COMPILER2) |
duke@435 | 5583 | if (ClearFPUAtPark) { _mark_fpu_nosave() ; } |
duke@435 | 5584 | #endif |
duke@435 | 5585 | int status = os::Solaris::mutex_lock(_mutex); |
duke@435 | 5586 | assert_status(status == 0, status, "mutex_lock"); |
duke@435 | 5587 | guarantee (_nParked == 0, "invariant") ; |
duke@435 | 5588 | ++ _nParked ; |
duke@435 | 5589 | while (_Event < 0) { |
duke@435 | 5590 | // for some reason, under 2.7 lwp_cond_wait() may return ETIME ... |
duke@435 | 5591 | // Treat this the same as if the wait was interrupted |
duke@435 | 5592 | // With usr/lib/lwp going to kernel, always handle ETIME |
duke@435 | 5593 | status = os::Solaris::cond_wait(_cond, _mutex); |
duke@435 | 5594 | if (status == ETIME) status = EINTR ; |
duke@435 | 5595 | assert_status(status == 0 || status == EINTR, status, "cond_wait"); |
duke@435 | 5596 | } |
duke@435 | 5597 | -- _nParked ; |
duke@435 | 5598 | _Event = 0 ; |
duke@435 | 5599 | status = os::Solaris::mutex_unlock(_mutex); |
duke@435 | 5600 | assert_status(status == 0, status, "mutex_unlock"); |
duke@435 | 5601 | } |
duke@435 | 5602 | } |
duke@435 | 5603 | |
duke@435 | 5604 | int os::PlatformEvent::park(jlong millis) { |
duke@435 | 5605 | guarantee (_nParked == 0, "invariant") ; |
duke@435 | 5606 | int v ; |
duke@435 | 5607 | for (;;) { |
duke@435 | 5608 | v = _Event ; |
duke@435 | 5609 | if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ; |
duke@435 | 5610 | } |
duke@435 | 5611 | guarantee (v >= 0, "invariant") ; |
duke@435 | 5612 | if (v != 0) return OS_OK ; |
duke@435 | 5613 | |
duke@435 | 5614 | int ret = OS_TIMEOUT; |
duke@435 | 5615 | timestruc_t abst; |
duke@435 | 5616 | compute_abstime (&abst, millis); |
duke@435 | 5617 | |
duke@435 | 5618 | // See http://monaco.sfbay/detail.jsf?cr=5094058. |
duke@435 | 5619 | // For Solaris SPARC set fprs.FEF=0 prior to parking. |
duke@435 | 5620 | // Only for SPARC >= V8PlusA |
duke@435 | 5621 | #if defined(__sparc) && defined(COMPILER2) |
duke@435 | 5622 | if (ClearFPUAtPark) { _mark_fpu_nosave() ; } |
duke@435 | 5623 | #endif |
duke@435 | 5624 | int status = os::Solaris::mutex_lock(_mutex); |
duke@435 | 5625 | assert_status(status == 0, status, "mutex_lock"); |
duke@435 | 5626 | guarantee (_nParked == 0, "invariant") ; |
duke@435 | 5627 | ++ _nParked ; |
duke@435 | 5628 | while (_Event < 0) { |
duke@435 | 5629 | int status = os::Solaris::cond_timedwait(_cond, _mutex, &abst); |
duke@435 | 5630 | assert_status(status == 0 || status == EINTR || |
duke@435 | 5631 | status == ETIME || status == ETIMEDOUT, |
duke@435 | 5632 | status, "cond_timedwait"); |
duke@435 | 5633 | if (!FilterSpuriousWakeups) break ; // previous semantics |
duke@435 | 5634 | if (status == ETIME || status == ETIMEDOUT) break ; |
duke@435 | 5635 | // We consume and ignore EINTR and spurious wakeups. |
duke@435 | 5636 | } |
duke@435 | 5637 | -- _nParked ; |
duke@435 | 5638 | if (_Event >= 0) ret = OS_OK ; |
duke@435 | 5639 | _Event = 0 ; |
duke@435 | 5640 | status = os::Solaris::mutex_unlock(_mutex); |
duke@435 | 5641 | assert_status(status == 0, status, "mutex_unlock"); |
duke@435 | 5642 | return ret; |
duke@435 | 5643 | } |
duke@435 | 5644 | |
duke@435 | 5645 | void os::PlatformEvent::unpark() { |
duke@435 | 5646 | int v, AnyWaiters; |
duke@435 | 5647 | |
duke@435 | 5648 | // Increment _Event. |
duke@435 | 5649 | // Another acceptable implementation would be to simply swap 1 |
duke@435 | 5650 | // into _Event: |
duke@435 | 5651 | // if (Swap (&_Event, 1) < 0) { |
duke@435 | 5652 | // mutex_lock (_mutex) ; AnyWaiters = nParked; mutex_unlock (_mutex) ; |
duke@435 | 5653 | // if (AnyWaiters) cond_signal (_cond) ; |
duke@435 | 5654 | // } |
duke@435 | 5655 | |
duke@435 | 5656 | for (;;) { |
duke@435 | 5657 | v = _Event ; |
duke@435 | 5658 | if (v > 0) { |
duke@435 | 5659 | // The LD of _Event could have reordered or be satisfied |
duke@435 | 5660 | // by a read-aside from this processor's write buffer. |
duke@435 | 5661 | // To avoid problems execute a barrier and then |
duke@435 | 5662 | // ratify the value. A degenerate CAS() would also work. |
duke@435 | 5663 | // Viz., CAS (v+0, &_Event, v) == v). |
duke@435 | 5664 | OrderAccess::fence() ; |
duke@435 | 5665 | if (_Event == v) return ; |
duke@435 | 5666 | continue ; |
duke@435 | 5667 | } |
duke@435 | 5668 | if (Atomic::cmpxchg (v+1, &_Event, v) == v) break ; |
duke@435 | 5669 | } |
duke@435 | 5670 | |
duke@435 | 5671 | // If the thread associated with the event was parked, wake it. |
duke@435 | 5672 | if (v < 0) { |
duke@435 | 5673 | int status ; |
duke@435 | 5674 | // Wait for the thread assoc with the PlatformEvent to vacate. |
duke@435 | 5675 | status = os::Solaris::mutex_lock(_mutex); |
duke@435 | 5676 | assert_status(status == 0, status, "mutex_lock"); |
duke@435 | 5677 | AnyWaiters = _nParked ; |
duke@435 | 5678 | status = os::Solaris::mutex_unlock(_mutex); |
duke@435 | 5679 | assert_status(status == 0, status, "mutex_unlock"); |
duke@435 | 5680 | guarantee (AnyWaiters == 0 || AnyWaiters == 1, "invariant") ; |
duke@435 | 5681 | if (AnyWaiters != 0) { |
duke@435 | 5682 | // We intentional signal *after* dropping the lock |
duke@435 | 5683 | // to avoid a common class of futile wakeups. |
duke@435 | 5684 | status = os::Solaris::cond_signal(_cond); |
duke@435 | 5685 | assert_status(status == 0, status, "cond_signal"); |
duke@435 | 5686 | } |
duke@435 | 5687 | } |
duke@435 | 5688 | } |
duke@435 | 5689 | |
duke@435 | 5690 | // JSR166 |
duke@435 | 5691 | // ------------------------------------------------------- |
duke@435 | 5692 | |
duke@435 | 5693 | /* |
duke@435 | 5694 | * The solaris and linux implementations of park/unpark are fairly |
duke@435 | 5695 | * conservative for now, but can be improved. They currently use a |
duke@435 | 5696 | * mutex/condvar pair, plus _counter. |
duke@435 | 5697 | * Park decrements _counter if > 0, else does a condvar wait. Unpark |
duke@435 | 5698 | * sets count to 1 and signals condvar. Only one thread ever waits |
duke@435 | 5699 | * on the condvar. Contention seen when trying to park implies that someone |
duke@435 | 5700 | * is unparking you, so don't wait. And spurious returns are fine, so there |
duke@435 | 5701 | * is no need to track notifications. |
duke@435 | 5702 | */ |
duke@435 | 5703 | |
duke@435 | 5704 | #define NANOSECS_PER_SEC 1000000000 |
duke@435 | 5705 | #define NANOSECS_PER_MILLISEC 1000000 |
duke@435 | 5706 | #define MAX_SECS 100000000 |
duke@435 | 5707 | |
duke@435 | 5708 | /* |
duke@435 | 5709 | * This code is common to linux and solaris and will be moved to a |
duke@435 | 5710 | * common place in dolphin. |
duke@435 | 5711 | * |
duke@435 | 5712 | * The passed in time value is either a relative time in nanoseconds |
duke@435 | 5713 | * or an absolute time in milliseconds. Either way it has to be unpacked |
duke@435 | 5714 | * into suitable seconds and nanoseconds components and stored in the |
duke@435 | 5715 | * given timespec structure. |
duke@435 | 5716 | * Given time is a 64-bit value and the time_t used in the timespec is only |
duke@435 | 5717 | * a signed-32-bit value (except on 64-bit Linux) we have to watch for |
duke@435 | 5718 | * overflow if times way in the future are given. Further on Solaris versions |
duke@435 | 5719 | * prior to 10 there is a restriction (see cond_timedwait) that the specified |
duke@435 | 5720 | * number of seconds, in abstime, is less than current_time + 100,000,000. |
duke@435 | 5721 | * As it will be 28 years before "now + 100000000" will overflow we can |
duke@435 | 5722 | * ignore overflow and just impose a hard-limit on seconds using the value |
duke@435 | 5723 | * of "now + 100,000,000". This places a limit on the timeout of about 3.17 |
duke@435 | 5724 | * years from "now". |
duke@435 | 5725 | */ |
duke@435 | 5726 | static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) { |
duke@435 | 5727 | assert (time > 0, "convertTime"); |
duke@435 | 5728 | |
duke@435 | 5729 | struct timeval now; |
duke@435 | 5730 | int status = gettimeofday(&now, NULL); |
duke@435 | 5731 | assert(status == 0, "gettimeofday"); |
duke@435 | 5732 | |
duke@435 | 5733 | time_t max_secs = now.tv_sec + MAX_SECS; |
duke@435 | 5734 | |
duke@435 | 5735 | if (isAbsolute) { |
duke@435 | 5736 | jlong secs = time / 1000; |
duke@435 | 5737 | if (secs > max_secs) { |
duke@435 | 5738 | absTime->tv_sec = max_secs; |
duke@435 | 5739 | } |
duke@435 | 5740 | else { |
duke@435 | 5741 | absTime->tv_sec = secs; |
duke@435 | 5742 | } |
duke@435 | 5743 | absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC; |
duke@435 | 5744 | } |
duke@435 | 5745 | else { |
duke@435 | 5746 | jlong secs = time / NANOSECS_PER_SEC; |
duke@435 | 5747 | if (secs >= MAX_SECS) { |
duke@435 | 5748 | absTime->tv_sec = max_secs; |
duke@435 | 5749 | absTime->tv_nsec = 0; |
duke@435 | 5750 | } |
duke@435 | 5751 | else { |
duke@435 | 5752 | absTime->tv_sec = now.tv_sec + secs; |
duke@435 | 5753 | absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000; |
duke@435 | 5754 | if (absTime->tv_nsec >= NANOSECS_PER_SEC) { |
duke@435 | 5755 | absTime->tv_nsec -= NANOSECS_PER_SEC; |
duke@435 | 5756 | ++absTime->tv_sec; // note: this must be <= max_secs |
duke@435 | 5757 | } |
duke@435 | 5758 | } |
duke@435 | 5759 | } |
duke@435 | 5760 | assert(absTime->tv_sec >= 0, "tv_sec < 0"); |
duke@435 | 5761 | assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs"); |
duke@435 | 5762 | assert(absTime->tv_nsec >= 0, "tv_nsec < 0"); |
duke@435 | 5763 | assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec"); |
duke@435 | 5764 | } |
duke@435 | 5765 | |
duke@435 | 5766 | void Parker::park(bool isAbsolute, jlong time) { |
duke@435 | 5767 | |
duke@435 | 5768 | // Optional fast-path check: |
duke@435 | 5769 | // Return immediately if a permit is available. |
duke@435 | 5770 | if (_counter > 0) { |
duke@435 | 5771 | _counter = 0 ; |
duke@435 | 5772 | return ; |
duke@435 | 5773 | } |
duke@435 | 5774 | |
duke@435 | 5775 | // Optional fast-exit: Check interrupt before trying to wait |
duke@435 | 5776 | Thread* thread = Thread::current(); |
duke@435 | 5777 | assert(thread->is_Java_thread(), "Must be JavaThread"); |
duke@435 | 5778 | JavaThread *jt = (JavaThread *)thread; |
duke@435 | 5779 | if (Thread::is_interrupted(thread, false)) { |
duke@435 | 5780 | return; |
duke@435 | 5781 | } |
duke@435 | 5782 | |
duke@435 | 5783 | // First, demultiplex/decode time arguments |
duke@435 | 5784 | timespec absTime; |
duke@435 | 5785 | if (time < 0) { // don't wait at all |
duke@435 | 5786 | return; |
duke@435 | 5787 | } |
duke@435 | 5788 | if (time > 0) { |
duke@435 | 5789 | // Warning: this code might be exposed to the old Solaris time |
duke@435 | 5790 | // round-down bugs. Grep "roundingFix" for details. |
duke@435 | 5791 | unpackTime(&absTime, isAbsolute, time); |
duke@435 | 5792 | } |
duke@435 | 5793 | |
duke@435 | 5794 | // Enter safepoint region |
duke@435 | 5795 | // Beware of deadlocks such as 6317397. |
duke@435 | 5796 | // The per-thread Parker:: _mutex is a classic leaf-lock. |
duke@435 | 5797 | // In particular a thread must never block on the Threads_lock while |
duke@435 | 5798 | // holding the Parker:: mutex. If safepoints are pending both the |
duke@435 | 5799 | // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock. |
duke@435 | 5800 | ThreadBlockInVM tbivm(jt); |
duke@435 | 5801 | |
duke@435 | 5802 | // Don't wait if cannot get lock since interference arises from |
duke@435 | 5803 | // unblocking. Also. check interrupt before trying wait |
duke@435 | 5804 | if (Thread::is_interrupted(thread, false) || |
duke@435 | 5805 | os::Solaris::mutex_trylock(_mutex) != 0) { |
duke@435 | 5806 | return; |
duke@435 | 5807 | } |
duke@435 | 5808 | |
duke@435 | 5809 | int status ; |
duke@435 | 5810 | |
duke@435 | 5811 | if (_counter > 0) { // no wait needed |
duke@435 | 5812 | _counter = 0; |
duke@435 | 5813 | status = os::Solaris::mutex_unlock(_mutex); |
duke@435 | 5814 | assert (status == 0, "invariant") ; |
duke@435 | 5815 | return; |
duke@435 | 5816 | } |
duke@435 | 5817 | |
duke@435 | 5818 | #ifdef ASSERT |
duke@435 | 5819 | // Don't catch signals while blocked; let the running threads have the signals. |
duke@435 | 5820 | // (This allows a debugger to break into the running thread.) |
duke@435 | 5821 | sigset_t oldsigs; |
duke@435 | 5822 | sigset_t* allowdebug_blocked = os::Solaris::allowdebug_blocked_signals(); |
duke@435 | 5823 | thr_sigsetmask(SIG_BLOCK, allowdebug_blocked, &oldsigs); |
duke@435 | 5824 | #endif |
duke@435 | 5825 | |
duke@435 | 5826 | OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */); |
duke@435 | 5827 | jt->set_suspend_equivalent(); |
duke@435 | 5828 | // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self() |
duke@435 | 5829 | |
duke@435 | 5830 | // Do this the hard way by blocking ... |
duke@435 | 5831 | // See http://monaco.sfbay/detail.jsf?cr=5094058. |
duke@435 | 5832 | // TODO-FIXME: for Solaris SPARC set fprs.FEF=0 prior to parking. |
duke@435 | 5833 | // Only for SPARC >= V8PlusA |
duke@435 | 5834 | #if defined(__sparc) && defined(COMPILER2) |
duke@435 | 5835 | if (ClearFPUAtPark) { _mark_fpu_nosave() ; } |
duke@435 | 5836 | #endif |
duke@435 | 5837 | |
duke@435 | 5838 | if (time == 0) { |
duke@435 | 5839 | status = os::Solaris::cond_wait (_cond, _mutex) ; |
duke@435 | 5840 | } else { |
duke@435 | 5841 | status = os::Solaris::cond_timedwait (_cond, _mutex, &absTime); |
duke@435 | 5842 | } |
duke@435 | 5843 | // Note that an untimed cond_wait() can sometimes return ETIME on older |
duke@435 | 5844 | // versions of the Solaris. |
duke@435 | 5845 | assert_status(status == 0 || status == EINTR || |
duke@435 | 5846 | status == ETIME || status == ETIMEDOUT, |
duke@435 | 5847 | status, "cond_timedwait"); |
duke@435 | 5848 | |
duke@435 | 5849 | #ifdef ASSERT |
duke@435 | 5850 | thr_sigsetmask(SIG_SETMASK, &oldsigs, NULL); |
duke@435 | 5851 | #endif |
duke@435 | 5852 | _counter = 0 ; |
duke@435 | 5853 | status = os::Solaris::mutex_unlock(_mutex); |
duke@435 | 5854 | assert_status(status == 0, status, "mutex_unlock") ; |
duke@435 | 5855 | |
duke@435 | 5856 | // If externally suspended while waiting, re-suspend |
duke@435 | 5857 | if (jt->handle_special_suspend_equivalent_condition()) { |
duke@435 | 5858 | jt->java_suspend_self(); |
duke@435 | 5859 | } |
duke@435 | 5860 | |
duke@435 | 5861 | } |
duke@435 | 5862 | |
duke@435 | 5863 | void Parker::unpark() { |
duke@435 | 5864 | int s, status ; |
duke@435 | 5865 | status = os::Solaris::mutex_lock (_mutex) ; |
duke@435 | 5866 | assert (status == 0, "invariant") ; |
duke@435 | 5867 | s = _counter; |
duke@435 | 5868 | _counter = 1; |
duke@435 | 5869 | status = os::Solaris::mutex_unlock (_mutex) ; |
duke@435 | 5870 | assert (status == 0, "invariant") ; |
duke@435 | 5871 | |
duke@435 | 5872 | if (s < 1) { |
duke@435 | 5873 | status = os::Solaris::cond_signal (_cond) ; |
duke@435 | 5874 | assert (status == 0, "invariant") ; |
duke@435 | 5875 | } |
duke@435 | 5876 | } |
duke@435 | 5877 | |
duke@435 | 5878 | extern char** environ; |
duke@435 | 5879 | |
duke@435 | 5880 | // Run the specified command in a separate process. Return its exit value, |
duke@435 | 5881 | // or -1 on failure (e.g. can't fork a new process). |
duke@435 | 5882 | // Unlike system(), this function can be called from signal handler. It |
duke@435 | 5883 | // doesn't block SIGINT et al. |
duke@435 | 5884 | int os::fork_and_exec(char* cmd) { |
duke@435 | 5885 | char * argv[4]; |
duke@435 | 5886 | argv[0] = (char *)"sh"; |
duke@435 | 5887 | argv[1] = (char *)"-c"; |
duke@435 | 5888 | argv[2] = cmd; |
duke@435 | 5889 | argv[3] = NULL; |
duke@435 | 5890 | |
duke@435 | 5891 | // fork is async-safe, fork1 is not so can't use in signal handler |
duke@435 | 5892 | pid_t pid; |
duke@435 | 5893 | Thread* t = ThreadLocalStorage::get_thread_slow(); |
duke@435 | 5894 | if (t != NULL && t->is_inside_signal_handler()) { |
duke@435 | 5895 | pid = fork(); |
duke@435 | 5896 | } else { |
duke@435 | 5897 | pid = fork1(); |
duke@435 | 5898 | } |
duke@435 | 5899 | |
duke@435 | 5900 | if (pid < 0) { |
duke@435 | 5901 | // fork failed |
duke@435 | 5902 | warning("fork failed: %s", strerror(errno)); |
duke@435 | 5903 | return -1; |
duke@435 | 5904 | |
duke@435 | 5905 | } else if (pid == 0) { |
duke@435 | 5906 | // child process |
duke@435 | 5907 | |
duke@435 | 5908 | // try to be consistent with system(), which uses "/usr/bin/sh" on Solaris |
duke@435 | 5909 | execve("/usr/bin/sh", argv, environ); |
duke@435 | 5910 | |
duke@435 | 5911 | // execve failed |
duke@435 | 5912 | _exit(-1); |
duke@435 | 5913 | |
duke@435 | 5914 | } else { |
duke@435 | 5915 | // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't |
duke@435 | 5916 | // care about the actual exit code, for now. |
duke@435 | 5917 | |
duke@435 | 5918 | int status; |
duke@435 | 5919 | |
duke@435 | 5920 | // Wait for the child process to exit. This returns immediately if |
duke@435 | 5921 | // the child has already exited. */ |
duke@435 | 5922 | while (waitpid(pid, &status, 0) < 0) { |
duke@435 | 5923 | switch (errno) { |
duke@435 | 5924 | case ECHILD: return 0; |
duke@435 | 5925 | case EINTR: break; |
duke@435 | 5926 | default: return -1; |
duke@435 | 5927 | } |
duke@435 | 5928 | } |
duke@435 | 5929 | |
duke@435 | 5930 | if (WIFEXITED(status)) { |
duke@435 | 5931 | // The child exited normally; get its exit code. |
duke@435 | 5932 | return WEXITSTATUS(status); |
duke@435 | 5933 | } else if (WIFSIGNALED(status)) { |
duke@435 | 5934 | // The child exited because of a signal |
duke@435 | 5935 | // The best value to return is 0x80 + signal number, |
duke@435 | 5936 | // because that is what all Unix shells do, and because |
duke@435 | 5937 | // it allows callers to distinguish between process exit and |
duke@435 | 5938 | // process death by signal. |
duke@435 | 5939 | return 0x80 + WTERMSIG(status); |
duke@435 | 5940 | } else { |
duke@435 | 5941 | // Unknown exit code; pass it through |
duke@435 | 5942 | return status; |
duke@435 | 5943 | } |
duke@435 | 5944 | } |
duke@435 | 5945 | } |