Wed, 25 Mar 2009 14:19:20 -0400
6541756: Reduce executable C-heap
Summary: Add executable parameters to reserve_memory and commit_memory to reduce executable memory to only the Code Heap.
Reviewed-by: xlu, kvn, acorn
1 /*
2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 // Solaris_OS defines the interface to Solaris operating systems
27 class Solaris {
28 friend class os;
30 private:
32 // Support for "new" libthread APIs for getting & setting thread context (2.8)
33 #define TRS_VALID 0
34 #define TRS_NONVOLATILE 1
35 #define TRS_LWPID 2
36 #define TRS_INVALID 3
38 // _T2_libthread is true if we believe we are running with the newer
39 // SunSoft lib/lwp/libthread: default Solaris 9, available Solaris 8
40 // which is a lightweight libthread that also supports all T1
41 static bool _T2_libthread;
42 // These refer to new libthread interface functions
43 // They get intialized if we dynamically detect new libthread
44 static int_fnP_thread_t_iP_uP_stack_tP_gregset_t _thr_getstate;
45 static int_fnP_thread_t_i_gregset_t _thr_setstate;
46 static int_fnP_thread_t_i _thr_setmutator;
47 static int_fnP_thread_t _thr_suspend_mutator;
48 static int_fnP_thread_t _thr_continue_mutator;
49 // libthread_init sets the above, if the new functionality is detected
51 // initialized to libthread or lwp synchronization primitives depending on UseLWPSychronization
52 static int_fnP_mutex_tP _mutex_lock;
53 static int_fnP_mutex_tP _mutex_trylock;
54 static int_fnP_mutex_tP _mutex_unlock;
55 static int_fnP_mutex_tP_i_vP _mutex_init;
56 static int_fnP_mutex_tP _mutex_destroy;
57 static int _mutex_scope;
59 static int_fnP_cond_tP_mutex_tP_timestruc_tP _cond_timedwait;
60 static int_fnP_cond_tP_mutex_tP _cond_wait;
61 static int_fnP_cond_tP _cond_signal;
62 static int_fnP_cond_tP _cond_broadcast;
63 static int_fnP_cond_tP_i_vP _cond_init;
64 static int_fnP_cond_tP _cond_destroy;
65 static int _cond_scope;
67 typedef uintptr_t lgrp_cookie_t;
68 typedef id_t lgrp_id_t;
69 typedef int lgrp_rsrc_t;
70 typedef enum lgrp_view {
71 LGRP_VIEW_CALLER, /* what's available to the caller */
72 LGRP_VIEW_OS /* what's available to operating system */
73 } lgrp_view_t;
75 typedef uint_t (*getisax_func_t)(uint32_t* array, uint_t n);
77 typedef lgrp_id_t (*lgrp_home_func_t)(idtype_t idtype, id_t id);
78 typedef lgrp_cookie_t (*lgrp_init_func_t)(lgrp_view_t view);
79 typedef int (*lgrp_fini_func_t)(lgrp_cookie_t cookie);
80 typedef lgrp_id_t (*lgrp_root_func_t)(lgrp_cookie_t cookie);
81 typedef int (*lgrp_children_func_t)(lgrp_cookie_t cookie, lgrp_id_t parent,
82 lgrp_id_t *lgrp_array, uint_t lgrp_array_size);
83 typedef int (*lgrp_resources_func_t)(lgrp_cookie_t cookie, lgrp_id_t lgrp,
84 lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
85 lgrp_rsrc_t type);
86 typedef int (*lgrp_nlgrps_func_t)(lgrp_cookie_t cookie);
87 typedef int (*lgrp_cookie_stale_func_t)(lgrp_cookie_t cookie);
88 typedef int (*meminfo_func_t)(const uint64_t inaddr[], int addr_count,
89 const uint_t info_req[], int info_count,
90 uint64_t outdata[], uint_t validity[]);
92 static getisax_func_t _getisax;
94 static lgrp_home_func_t _lgrp_home;
95 static lgrp_init_func_t _lgrp_init;
96 static lgrp_fini_func_t _lgrp_fini;
97 static lgrp_root_func_t _lgrp_root;
98 static lgrp_children_func_t _lgrp_children;
99 static lgrp_resources_func_t _lgrp_resources;
100 static lgrp_nlgrps_func_t _lgrp_nlgrps;
101 static lgrp_cookie_stale_func_t _lgrp_cookie_stale;
102 static lgrp_cookie_t _lgrp_cookie;
104 static meminfo_func_t _meminfo;
106 // Large Page Support--mpss.
107 static bool set_mpss_range(caddr_t start, size_t bytes, size_t align);
109 static void init_thread_fpu_state(void);
111 static void try_enable_extended_io();
113 // For signal-chaining
114 static unsigned long sigs; // mask of signals that have
115 // preinstalled signal handlers
116 static struct sigaction *(*get_signal_action)(int);
117 static struct sigaction *get_preinstalled_handler(int);
118 static int (*get_libjsig_version)();
119 static void save_preinstalled_handler(int, struct sigaction&);
120 static void check_signal_handler(int sig);
121 // For overridable signals
122 static int _SIGinterrupt; // user-overridable INTERRUPT_SIGNAL
123 static int _SIGasync; // user-overridable ASYNC_SIGNAL
124 static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; }
125 static void set_SIGasync(int newsig) { _SIGasync = newsig; }
128 public:
129 // Large Page Support--ISM.
130 static bool largepage_range(char* addr, size_t size);
132 static int SIGinterrupt() { return _SIGinterrupt; }
133 static int SIGasync() { return _SIGasync; }
134 static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo
136 static bool valid_stack_address(Thread* thread, address sp);
137 static bool valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect);
138 static ucontext_t* get_valid_uc_in_signal_handler(Thread* thread,
139 ucontext_t* uc);
141 static ExtendedPC ucontext_get_ExtendedPC(ucontext_t* uc);
142 static intptr_t* ucontext_get_sp(ucontext_t* uc);
143 // ucontext_get_fp() is only used by Solaris X86 (see note below)
144 static intptr_t* ucontext_get_fp(ucontext_t* uc);
146 // For Analyzer Forte AsyncGetCallTrace profiling support:
147 // Parameter ret_fp is only used by Solaris X86.
148 //
149 // We should have different declarations of this interface in
150 // os_solaris_i486.hpp and os_solaris_sparc.hpp, but that file
151 // provides extensions to the os class and not the Solaris class.
152 static ExtendedPC fetch_frame_from_ucontext(Thread* thread, ucontext_t* uc,
153 intptr_t** ret_sp, intptr_t** ret_fp);
155 static void hotspot_sigmask(Thread* thread);
157 protected:
158 // Solaris-specific interface goes here
159 static julong available_memory();
160 static julong physical_memory() { return _physical_memory; }
161 static julong _physical_memory;
162 static void initialize_system_info();
163 static int _dev_zero_fd;
164 static int get_dev_zero_fd() { return _dev_zero_fd; }
165 static void set_dev_zero_fd(int fd) { _dev_zero_fd = fd; }
166 static char* mmap_chunk(char *addr, size_t size, int flags, int prot);
167 static char* anon_mmap(char* requested_addr, size_t bytes, size_t alignment_hint, bool fixed);
168 static bool mpss_sanity_check(bool warn, size_t * page_size);
169 static bool ism_sanity_check (bool warn, size_t * page_size);
171 // Workaround for 4352906. thr_stksegment sometimes returns
172 // a bad value for the primordial thread's stack base when
173 // it is called more than one time.
174 // Workaround is to cache the initial value to avoid further
175 // calls to thr_stksegment.
176 // It appears that someone (Hotspot?) is trashing the user's
177 // proc_t structure (note that this is a system struct).
178 static address _main_stack_base;
180 public:
181 static void libthread_init();
182 static void synchronization_init();
183 static bool liblgrp_init();
184 // Load miscellaneous symbols.
185 static void misc_sym_init();
186 // This boolean allows users to forward their own non-matching signals
187 // to JVM_handle_solaris_signal, harmlessly.
188 static bool signal_handlers_are_installed;
190 static void signal_sets_init();
191 static void install_signal_handlers();
192 static void set_signal_handler(int sig, bool set_installed, bool oktochain);
193 static void init_signal_mem();
194 static bool is_sig_ignored(int sig);
195 static void set_our_sigflags(int, int);
196 static int get_our_sigflags(int);
198 // For signal-chaining
199 static bool libjsig_is_loaded; // libjsig that interposes sigaction(),
200 // signal(), sigset() is loaded
201 static struct sigaction *get_chained_signal_action(int sig);
202 static bool chained_handler(int sig, siginfo_t *siginfo, void *context);
204 // The following allow us to link against both the old and new libthread (2.8)
205 // and exploit the new libthread functionality if available.
207 static bool T2_libthread() { return _T2_libthread; }
208 static void set_T2_libthread(bool T2_libthread) { _T2_libthread = T2_libthread; }
210 static int thr_getstate(thread_t tid, int *flag, unsigned *lwp, stack_t *ss, gregset_t rs)
211 { return _thr_getstate(tid, flag, lwp, ss, rs); }
212 static void set_thr_getstate(int_fnP_thread_t_iP_uP_stack_tP_gregset_t func)
213 { _thr_getstate = func; }
215 static int thr_setstate(thread_t tid, int flag, gregset_t rs) { return _thr_setstate(tid, flag, rs); }
216 static void set_thr_setstate(int_fnP_thread_t_i_gregset_t func) { _thr_setstate = func; }
218 static int thr_setmutator(thread_t tid, int enabled) { return _thr_setmutator(tid, enabled); }
219 static void set_thr_setmutator(int_fnP_thread_t_i func) { _thr_setmutator = func; }
221 static int thr_suspend_mutator(thread_t tid) { return _thr_suspend_mutator(tid); }
222 static void set_thr_suspend_mutator(int_fnP_thread_t func) { _thr_suspend_mutator = func; }
224 static int thr_continue_mutator(thread_t tid) { return _thr_continue_mutator(tid); }
225 static void set_thr_continue_mutator(int_fnP_thread_t func) { _thr_continue_mutator = func; }
227 // Allows us to switch between lwp and thread -based synchronization
228 static int mutex_lock(mutex_t *mx) { return _mutex_lock(mx); }
229 static int mutex_trylock(mutex_t *mx) { return _mutex_trylock(mx); }
230 static int mutex_unlock(mutex_t *mx) { return _mutex_unlock(mx); }
231 static int mutex_init(mutex_t *mx) { return _mutex_init(mx, os::Solaris::mutex_scope(), NULL); }
232 static int mutex_destroy(mutex_t *mx) { return _mutex_destroy(mx); }
233 static int mutex_scope() { return _mutex_scope; }
235 static void set_mutex_lock(int_fnP_mutex_tP func) { _mutex_lock = func; }
236 static void set_mutex_trylock(int_fnP_mutex_tP func) { _mutex_trylock = func; }
237 static void set_mutex_unlock(int_fnP_mutex_tP func) { _mutex_unlock = func; }
238 static void set_mutex_init(int_fnP_mutex_tP_i_vP func) { _mutex_init = func; }
239 static void set_mutex_destroy(int_fnP_mutex_tP func) { _mutex_destroy = func; }
240 static void set_mutex_scope(int scope) { _mutex_scope = scope; }
242 static int cond_timedwait(cond_t *cv, mutex_t *mx, timestruc_t *abst)
243 { return _cond_timedwait(cv, mx, abst); }
244 static int cond_wait(cond_t *cv, mutex_t *mx) { return _cond_wait(cv, mx); }
245 static int cond_signal(cond_t *cv) { return _cond_signal(cv); }
246 static int cond_broadcast(cond_t *cv) { return _cond_broadcast(cv); }
247 static int cond_init(cond_t *cv) { return _cond_init(cv, os::Solaris::cond_scope(), NULL); }
248 static int cond_destroy(cond_t *cv) { return _cond_destroy(cv); }
249 static int cond_scope() { return _cond_scope; }
251 static void set_cond_timedwait(int_fnP_cond_tP_mutex_tP_timestruc_tP func)
252 { _cond_timedwait = func; }
253 static void set_cond_wait(int_fnP_cond_tP_mutex_tP func) { _cond_wait = func; }
254 static void set_cond_signal(int_fnP_cond_tP func) { _cond_signal = func; }
255 static void set_cond_broadcast(int_fnP_cond_tP func) { _cond_broadcast = func; }
256 static void set_cond_init(int_fnP_cond_tP_i_vP func) { _cond_init = func; }
257 static void set_cond_destroy(int_fnP_cond_tP func) { _cond_destroy = func; }
258 static void set_cond_scope(int scope) { _cond_scope = scope; }
260 static void set_lgrp_home(lgrp_home_func_t func) { _lgrp_home = func; }
261 static void set_lgrp_init(lgrp_init_func_t func) { _lgrp_init = func; }
262 static void set_lgrp_fini(lgrp_fini_func_t func) { _lgrp_fini = func; }
263 static void set_lgrp_root(lgrp_root_func_t func) { _lgrp_root = func; }
264 static void set_lgrp_children(lgrp_children_func_t func) { _lgrp_children = func; }
265 static void set_lgrp_resources(lgrp_resources_func_t func) { _lgrp_resources = func; }
266 static void set_lgrp_nlgrps(lgrp_nlgrps_func_t func) { _lgrp_nlgrps = func; }
267 static void set_lgrp_cookie_stale(lgrp_cookie_stale_func_t func) { _lgrp_cookie_stale = func; }
268 static void set_lgrp_cookie(lgrp_cookie_t cookie) { _lgrp_cookie = cookie; }
270 static id_t lgrp_home(idtype_t type, id_t id) { return _lgrp_home != NULL ? _lgrp_home(type, id) : -1; }
271 static lgrp_cookie_t lgrp_init(lgrp_view_t view) { return _lgrp_init != NULL ? _lgrp_init(view) : 0; }
272 static int lgrp_fini(lgrp_cookie_t cookie) { return _lgrp_fini != NULL ? _lgrp_fini(cookie) : -1; }
273 static lgrp_id_t lgrp_root(lgrp_cookie_t cookie) { return _lgrp_root != NULL ? _lgrp_root(cookie) : -1; };
274 static int lgrp_children(lgrp_cookie_t cookie, lgrp_id_t parent,
275 lgrp_id_t *lgrp_array, uint_t lgrp_array_size) {
276 return _lgrp_children != NULL ? _lgrp_children(cookie, parent, lgrp_array, lgrp_array_size) : -1;
277 }
278 static int lgrp_resources(lgrp_cookie_t cookie, lgrp_id_t lgrp,
279 lgrp_id_t *lgrp_array, uint_t lgrp_array_size,
280 lgrp_rsrc_t type) {
281 return _lgrp_resources != NULL ? _lgrp_resources(cookie, lgrp, lgrp_array, lgrp_array_size, type) : -1;
282 }
284 static int lgrp_nlgrps(lgrp_cookie_t cookie) { return _lgrp_nlgrps != NULL ? _lgrp_nlgrps(cookie) : -1; }
285 static int lgrp_cookie_stale(lgrp_cookie_t cookie) {
286 return _lgrp_cookie_stale != NULL ? _lgrp_cookie_stale(cookie) : -1;
287 }
288 static lgrp_cookie_t lgrp_cookie() { return _lgrp_cookie; }
290 static bool supports_getisax() { return _getisax != NULL; }
291 static uint_t getisax(uint32_t* array, uint_t n);
293 static void set_meminfo(meminfo_func_t func) { _meminfo = func; }
294 static int meminfo (const uint64_t inaddr[], int addr_count,
295 const uint_t info_req[], int info_count,
296 uint64_t outdata[], uint_t validity[]) {
297 return _meminfo != NULL ? _meminfo(inaddr, addr_count, info_req, info_count,
298 outdata, validity) : -1;
299 }
301 enum {
302 clear_interrupted = true
303 };
304 static void setup_interruptible(JavaThread* thread);
305 static void setup_interruptible_already_blocked(JavaThread* thread);
306 static JavaThread* setup_interruptible();
307 static void cleanup_interruptible(JavaThread* thread);
309 // perf counter incrementers used by _INTERRUPTIBLE
311 static void bump_interrupted_before_count();
312 static void bump_interrupted_during_count();
314 #ifdef ASSERT
315 static JavaThread* setup_interruptible_native();
316 static void cleanup_interruptible_native(JavaThread* thread);
317 #endif
319 static sigset_t* unblocked_signals();
320 static sigset_t* vm_signals();
321 static sigset_t* allowdebug_blocked_signals();
323 // %%% Following should be promoted to os.hpp:
324 // Trace number of created threads
325 static jint _os_thread_limit;
326 static volatile jint _os_thread_count;
328 // Minimum stack size a thread can be created with (allowing
329 // the VM to completely create the thread and enter user code)
331 static size_t min_stack_allowed;
333 // Stack overflow handling
335 static int max_register_window_saves_before_flushing();
337 // Stack repair handling
339 // none present
341 };
343 class PlatformEvent : public CHeapObj {
344 private:
345 double CachePad [4] ; // increase odds that _mutex is sole occupant of cache line
346 volatile int _Event ;
347 int _nParked ;
348 int _pipev [2] ;
349 mutex_t _mutex [1] ;
350 cond_t _cond [1] ;
351 double PostPad [2] ;
353 protected:
354 // Defining a protected ctor effectively gives us an abstract base class.
355 // That is, a PlatformEvent can never be instantiated "naked" but only
356 // as a part of a ParkEvent (recall that ParkEvent extends PlatformEvent).
357 // TODO-FIXME: make dtor private
358 ~PlatformEvent() { guarantee (0, "invariant") ; }
359 PlatformEvent() {
360 int status;
361 status = os::Solaris::cond_init(_cond);
362 assert_status(status == 0, status, "cond_init");
363 status = os::Solaris::mutex_init(_mutex);
364 assert_status(status == 0, status, "mutex_init");
365 _Event = 0 ;
366 _nParked = 0 ;
367 _pipev[0] = _pipev[1] = -1 ;
368 }
370 public:
371 // Exercise caution using reset() and fired() -- they may require MEMBARs
372 void reset() { _Event = 0 ; }
373 int fired() { return _Event; }
374 void park () ;
375 int park (jlong millis) ;
376 int TryPark () ;
377 void unpark () ;
378 } ;
380 class PlatformParker : public CHeapObj {
381 protected:
382 mutex_t _mutex [1] ;
383 cond_t _cond [1] ;
385 public: // TODO-FIXME: make dtor private
386 ~PlatformParker() { guarantee (0, "invariant") ; }
388 public:
389 PlatformParker() {
390 int status;
391 status = os::Solaris::cond_init(_cond);
392 assert_status(status == 0, status, "cond_init");
393 status = os::Solaris::mutex_init(_mutex);
394 assert_status(status == 0, status, "mutex_init");
395 }
396 } ;