Thu, 29 May 2014 09:56:06 -0700
Merge
1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef OS_SOLARIS_VM_OS_SOLARIS_HPP
26 #define OS_SOLARIS_VM_OS_SOLARIS_HPP
28 // Solaris_OS defines the interface to Solaris operating systems
30 // Information about the protection of the page at address '0' on this os.
31 static bool zero_page_read_protected() { return true; }
33 class Solaris {
34 friend class os;
36 private:
38 // Support for "new" libthread APIs for getting & setting thread context (2.8)
39 #define TRS_VALID 0
40 #define TRS_NONVOLATILE 1
41 #define TRS_LWPID 2
42 #define TRS_INVALID 3
44 // _T2_libthread is true if we believe we are running with the newer
45 // SunSoft lib/lwp/libthread: default Solaris 9, available Solaris 8
46 // which is a lightweight libthread that also supports all T1
47 static bool _T2_libthread;
48 // These refer to new libthread interface functions
49 // They get intialized if we dynamically detect new libthread
50 static int_fnP_thread_t_iP_uP_stack_tP_gregset_t _thr_getstate;
51 static int_fnP_thread_t_i_gregset_t _thr_setstate;
52 static int_fnP_thread_t_i _thr_setmutator;
53 static int_fnP_thread_t _thr_suspend_mutator;
54 static int_fnP_thread_t _thr_continue_mutator;
55 // libthread_init sets the above, if the new functionality is detected
57 // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization
58 static int_fnP_mutex_tP _mutex_lock;
59 static int_fnP_mutex_tP _mutex_trylock;
60 static int_fnP_mutex_tP _mutex_unlock;
61 static int_fnP_mutex_tP_i_vP _mutex_init;
62 static int_fnP_mutex_tP _mutex_destroy;
63 static int _mutex_scope;
65 static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait;
66 static int_fnP_cond_tP_mutex_tP _cond_wait;
67 static int_fnP_cond_tP _cond_signal;
68 static int_fnP_cond_tP _cond_broadcast;
69 static int_fnP_cond_tP_i_vP _cond_init;
70 static int_fnP_cond_tP _cond_destroy;
71 static int _cond_scope;
73 typedef uintptr_t lgrp_cookie_t;
74 typedef id_t lgrp_id_t;
75 typedef int lgrp_rsrc_t;
76 typedef enum lgrp_view {
77 LGRP_VIEW_CALLER, /* what's available to the caller */
78 LGRP_VIEW_OS /* what's available to operating system */
79 } lgrp_view_t;
81 typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n);
83 typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id);
84 typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view);
85 typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie);
86 typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie);
87 typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent,
88 lgrp_id_t *lgrp_array, uint_t lgrp_array_size);
89 typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp,
90 lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
91 lgrp_rsrc_t type);
92 typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie);
93 typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie);
94 typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count,
95 const uint_t info_req[], int info_count,
96 uint64_t outdata[], uint_t validity[]);
98 static getisax_func_t _getisax;
100 static lgrp_home_func_t _lgrp_home;
101 static lgrp_init_func_t _lgrp_init;
102 static lgrp_fini_func_t _lgrp_fini;
103 static lgrp_root_func_t _lgrp_root;
104 static lgrp_children_func_t _lgrp_children;
105 static lgrp_resources_func_t _lgrp_resources;
106 static lgrp_nlgrps_func_t _lgrp_nlgrps;
107 static lgrp_cookie_stale_func_t _lgrp_cookie_stale;
108 static lgrp_cookie_t _lgrp_cookie;
110 static meminfo_func_t _meminfo;
112 // Large Page Support
113 static bool setup_large_pages(caddr_t start, size_t bytes, size_t align);
115 static void init_thread_fpu_state(void);
117 static void try_enable_extended_io();
119 // For signal-chaining
120 static unsigned long sigs; // mask of signals that have
121 // preinstalled signal handlers
122 static struct sigaction *(*get_signal_action)(int);
123 static struct sigaction *get_preinstalled_handler(int);
124 static int (*get_libjsig_version)();
125 static void save_preinstalled_handler(int, struct sigaction&);
126 static void check_signal_handler(int sig);
127 // For overridable signals
128 static int _SIGinterrupt; // user-overridable INTERRUPT_SIGNAL
129 static int _SIGasync; // user-overridable ASYNC_SIGNAL
130 static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; }
131 static void set_SIGasync(int newsig) { _SIGasync = newsig; }
133 public:
134 // Large Page Support--ISM.
135 static bool largepage_range(char* addr, size_t size);
137 static int SIGinterrupt() { return _SIGinterrupt; }
138 static int SIGasync() { return _SIGasync; }
139 static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo
141 static bool valid_stack_address(Thread* thread, address sp);
142 static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect);
143 static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread,
144 ucontext_t* uc);
146 static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc);
147 static intptr_t* ucontext_get_sp(ucontext_t* uc);
148 // ucontext_get_fp() is only used by Solaris X86 (see note below)
149 static intptr_t* ucontext_get_fp(ucontext_t* uc);
150 static address ucontext_get_pc(ucontext_t* uc);
152 // For Analyzer Forte AsyncGetCallTrace profiling support:
153 // Parameter ret_fp is only used by Solaris X86.
154 //
155 // We should have different declarations of this interface in
156 // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file
157 // provides extensions to the os class and not the Solaris class.
158 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc,
159 intptr_t** ret_sp, intptr_t** ret_fp);
161 static void hotspot_sigmask(Thread* thread);
163 // SR_handler
164 static void SR_handler(Thread* thread, ucontext_t* uc);
165 protected:
166 // Solaris-specific interface goes here
167 static julong available_memory();
168 static julong physical_memory() { return _physical_memory; }
169 static julong _physical_memory;
170 static void initialize_system_info();
171 static int _dev_zero_fd;
172 static int get_dev_zero_fd() { return _dev_zero_fd; }
173 static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; }
174 static int commit_memory_impl(char* addr, size_t bytes, bool exec);
175 static int commit_memory_impl(char* addr, size_t bytes,
176 size_t alignment_hint, bool exec);
177 static char* mmap_chunk(char *addr, size_t size, int flags, int prot);
178 static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed);
179 static bool mpss_sanity_check(bool warn, size_t * page_size);
181 // Workaround for 4352906. thr_stksegment sometimes returns
182 // a bad value for the primordial thread's stack base when
183 // it is called more than one time.
184 // Workaround is to cache the initial value to avoid further
185 // calls to thr_stksegment.
186 // It appears that someone (Hotspot?) is trashing the user's
187 // proc_t structure (note that this is a system struct).
188 static address _main_stack_base;
190 static void print_distro_info(outputStream* st);
191 static void print_libversion_info(outputStream* st);
193 public:
194 static void libthread_init();
195 static void synchronization_init();
196 static bool liblgrp_init();
197 // Load miscellaneous symbols.
198 static void misc_sym_init();
199 // This boolean allows users to forward their own non-matching signals
200 // to JVM_handle_solaris_signal, harmlessly.
201 static bool signal_handlers_are_installed;
203 static void signal_sets_init();
204 static void install_signal_handlers();
205 static void set_signal_handler(int sig, bool set_installed, bool oktochain);
206 static void init_signal_mem();
207 static bool is_sig_ignored(int sig);
208 static void set_our_sigflags(int, int);
209 static int get_our_sigflags(int);
211 // For signal-chaining
212 static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
213 // signal(), sigset() is loaded
214 static struct sigaction *get_chained_signal_action(int sig);
215 static bool chained_handler(int sig, siginfo_t *siginfo, void *context);
217 // The following allow us to link against both the old and new libthread (2.8)
218 // and exploit the new libthread functionality if available.
220 static bool T2_libthread() { return _T2_libthread; }
221 static void set_T2_libthread(bool T2_libthread) { _T2_libthread = T2_libthread; }
223 static int thr_getstate(thread_t tid, int *flag, unsigned *lwp, stack_t *ss, gregset_t rs)
224 { return _thr_getstate(tid, flag, lwp, ss, rs); }
225 static void set_thr_getstate(int_fnP_thread_t_iP_uP_stack_tP_gregset_t func)
226 { _thr_getstate = func; }
228 static int thr_setstate(thread_t tid, int flag, gregset_t rs) { return _thr_setstate(tid, flag, rs); }
229 static void set_thr_setstate(int_fnP_thread_t_i_gregset_t func) { _thr_setstate = func; }
231 static int thr_setmutator(thread_t tid, int enabled) { return _thr_setmutator(tid, enabled); }
232 static void set_thr_setmutator(int_fnP_thread_t_i func) { _thr_setmutator = func; }
234 static int thr_suspend_mutator(thread_t tid) { return _thr_suspend_mutator(tid); }
235 static void set_thr_suspend_mutator(int_fnP_thread_t func) { _thr_suspend_mutator = func; }
237 static int thr_continue_mutator(thread_t tid) { return _thr_continue_mutator(tid); }
238 static void set_thr_continue_mutator(int_fnP_thread_t func) { _thr_continue_mutator = func; }
240 // Allows us to switch between lwp and thread -based synchronization
241 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); }
242 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); }
243 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); }
244 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); }
245 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); }
246 static int mutex_scope() { return _mutex_scope; }
248 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; }
249 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; }
250 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; }
251 static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; }
252 static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; }
253 static void set_mutex_scope(int scope) { _mutex_scope = scope; }
255 static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst)
256 { return _cond_timedwait(cv, mx, abst); }
257 static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); }
258 static int cond_signal(cond_t *cv) { return _cond_signal(cv); }
259 static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); }
260 static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); }
261 static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); }
262 static int cond_scope() { return _cond_scope; }
264 static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func)
265 { _cond_timedwait = func; }
266 static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; }
267 static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; }
268 static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; }
269 static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; }
270 static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; }
271 static void set_cond_scope(int scope) { _cond_scope = scope; }
273 static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; }
274 static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; }
275 static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; }
276 static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; }
277 static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; }
278 static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; }
279 static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; }
280 static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; }
281 static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; }
283 static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; }
284 static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; }
285 static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; }
286 static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; };
287 static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent,
288 lgrp_id_t *lgrp_array, uint_t lgrp_array_size) {
289 return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1;
290 }
291 static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp,
292 lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
293 lgrp_rsrc_t type) {
294 return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1;
295 }
297 static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; }
298 static int lgrp_cookie_stale(lgrp_cookie_t cookie) {
299 return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1;
300 }
301 static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; }
303 static bool supports_getisax() { return _getisax != NULL; }
304 static uint_t getisax(uint32_t* array, uint_t n);
306 static void set_meminfo(meminfo_func_t func) { _meminfo = func; }
307 static int meminfo (const uint64_t inaddr[], int addr_count,
308 const uint_t info_req[], int info_count,
309 uint64_t outdata[], uint_t validity[]) {
310 return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count,
311 outdata, validity) : -1;
312 }
314 enum {
315 clear_interrupted = true
316 };
317 static void setup_interruptible(JavaThread* thread);
318 static void setup_interruptible_already_blocked(JavaThread* thread);
319 static JavaThread* setup_interruptible();
320 static void cleanup_interruptible(JavaThread* thread);
322 // perf counter incrementers used by _INTERRUPTIBLE
324 static void bump_interrupted_before_count();
325 static void bump_interrupted_during_count();
327 #ifdef ASSERT
328 static JavaThread* setup_interruptible_native();
329 static void cleanup_interruptible_native(JavaThread* thread);
330 #endif
332 static sigset_t* unblocked_signals();
333 static sigset_t* vm_signals();
334 static sigset_t* allowdebug_blocked_signals();
336 // %%% Following should be promoted to os.hpp:
337 // Trace number of created threads
338 static jint _os_thread_limit;
339 static volatile jint _os_thread_count;
341 // Minimum stack size a thread can be created with (allowing
342 // the VM to completely create the thread and enter user code)
344 static size_t min_stack_allowed;
346 // Stack overflow handling
348 static int max_register_window_saves_before_flushing();
350 // Stack repair handling
352 // none present
354 };
356 class PlatformEvent : public CHeapObj<mtInternal> {
357 private:
358 double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line
359 volatile int _Event ;
360 int _nParked ;
361 int _pipev [2] ;
362 mutex_t _mutex [1] ;
363 cond_t _cond [1] ;
364 double PostPad [2] ;
366 protected:
367 // Defining a protected ctor effectively gives us an abstract base class.
368 // That is, a PlatformEvent can never be instantiated "naked" but only
369 // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent).
370 // TODO-FIXME: make dtor private
371 ~PlatformEvent() { guarantee (0, "invariant") ; }
372 PlatformEvent() {
373 int status;
374 status = os::Solaris::cond_init(_cond);
375 assert_status(status == 0, status, "cond_init");
376 status = os::Solaris::mutex_init(_mutex);
377 assert_status(status == 0, status, "mutex_init");
378 _Event = 0 ;
379 _nParked = 0 ;
380 _pipev[0] = _pipev[1] = -1 ;
381 }
383 public:
384 // Exercise caution using reset() and fired() -- they may require MEMBARs
385 void reset() { _Event = 0 ; }
386 int fired() { return _Event; }
387 void park () ;
388 int park (jlong millis) ;
389 int TryPark () ;
390 void unpark () ;
391 } ;
393 class PlatformParker : public CHeapObj<mtInternal> {
394 protected:
395 mutex_t _mutex [1] ;
396 cond_t _cond [1] ;
398 public: // TODO-FIXME: make dtor private
399 ~PlatformParker() { guarantee (0, "invariant") ; }
401 public:
402 PlatformParker() {
403 int status;
404 status = os::Solaris::cond_init(_cond);
405 assert_status(status == 0, status, "cond_init");
406 status = os::Solaris::mutex_init(_mutex);
407 assert_status(status == 0, status, "mutex_init");
408 }
409 } ;
411 #endif // OS_SOLARIS_VM_OS_SOLARIS_HPP