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comparison src/share/vm/runtime/java.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 1997-2007 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 */
24
25 #include "incls/_precompiled.incl"
26 #include "incls/_java.cpp.incl"
27
28 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown);
29
30 #ifndef PRODUCT
31
32 // Statistics printing (method invocation histogram)
33
34 GrowableArray<methodOop>* collected_invoked_methods;
35
36 void collect_invoked_methods(methodOop m) {
37 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {
38 collected_invoked_methods->push(m);
39 }
40 }
41
42
43 GrowableArray<methodOop>* collected_profiled_methods;
44
45 void collect_profiled_methods(methodOop m) {
46 methodHandle mh(Thread::current(), m);
47 if ((m->method_data() != NULL) &&
48 (PrintMethodData || CompilerOracle::should_print(mh))) {
49 collected_profiled_methods->push(m);
50 }
51 }
52
53
54 int compare_methods(methodOop* a, methodOop* b) {
55 // %%% there can be 32-bit overflow here
56 return ((*b)->invocation_count() + (*b)->compiled_invocation_count())
57 - ((*a)->invocation_count() + (*a)->compiled_invocation_count());
58 }
59
60
61 void print_method_invocation_histogram() {
62 ResourceMark rm;
63 HandleMark hm;
64 collected_invoked_methods = new GrowableArray<methodOop>(1024);
65 SystemDictionary::methods_do(collect_invoked_methods);
66 collected_invoked_methods->sort(&compare_methods);
67 //
68 tty->cr();
69 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff);
70 tty->cr();
71 tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
72 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,
73 synch_total = 0, nativ_total = 0, acces_total = 0;
74 for (int index = 0; index < collected_invoked_methods->length(); index++) {
75 methodOop m = collected_invoked_methods->at(index);
76 int c = m->invocation_count() + m->compiled_invocation_count();
77 if (c >= MethodHistogramCutoff) m->print_invocation_count();
78 int_total += m->invocation_count();
79 comp_total += m->compiled_invocation_count();
80 if (m->is_final()) final_total += c;
81 if (m->is_static()) static_total += c;
82 if (m->is_synchronized()) synch_total += c;
83 if (m->is_native()) nativ_total += c;
84 if (m->is_accessor()) acces_total += c;
85 }
86 tty->cr();
87 total = int_total + comp_total;
88 tty->print_cr("Invocations summary:");
89 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total);
90 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total);
91 tty->print_cr("\t%9d (100%%) total", total);
92 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total);
93 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total);
94 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total);
95 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total);
96 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total);
97 tty->cr();
98 SharedRuntime::print_call_statistics(comp_total);
99 }
100
101 void print_method_profiling_data() {
102 ResourceMark rm;
103 HandleMark hm;
104 collected_profiled_methods = new GrowableArray<methodOop>(1024);
105 SystemDictionary::methods_do(collect_profiled_methods);
106 collected_profiled_methods->sort(&compare_methods);
107
108 int count = collected_profiled_methods->length();
109 if (count > 0) {
110 for (int index = 0; index < count; index++) {
111 methodOop m = collected_profiled_methods->at(index);
112 ttyLocker ttyl;
113 tty->print_cr("------------------------------------------------------------------------");
114 //m->print_name(tty);
115 m->print_invocation_count();
116 tty->cr();
117 m->print_codes();
118 }
119 tty->print_cr("------------------------------------------------------------------------");
120 }
121 }
122
123 void print_bytecode_count() {
124 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
125 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
126 }
127 }
128
129 AllocStats alloc_stats;
130
131
132
133 // General statistics printing (profiling ...)
134
135 void print_statistics() {
136
137 #ifdef ASSERT
138
139 if (CountRuntimeCalls) {
140 extern Histogram *RuntimeHistogram;
141 RuntimeHistogram->print();
142 }
143
144 if (CountJNICalls) {
145 extern Histogram *JNIHistogram;
146 JNIHistogram->print();
147 }
148
149 if (CountJVMCalls) {
150 extern Histogram *JVMHistogram;
151 JVMHistogram->print();
152 }
153
154 #endif
155
156 if (MemProfiling) {
157 MemProfiler::disengage();
158 }
159
160 if (CITime) {
161 CompileBroker::print_times();
162 }
163
164 #ifdef COMPILER1
165 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {
166 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);
167 Runtime1::print_statistics();
168 Deoptimization::print_statistics();
169 nmethod::print_statistics();
170 }
171 #endif /* COMPILER1 */
172
173 #ifdef COMPILER2
174 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {
175 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);
176 Compile::print_statistics();
177 #ifndef COMPILER1
178 Deoptimization::print_statistics();
179 nmethod::print_statistics();
180 #endif //COMPILER1
181 SharedRuntime::print_statistics();
182 os::print_statistics();
183 }
184
185 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics) {
186 OptoRuntime::print_named_counters();
187 }
188
189 if (TimeLivenessAnalysis) {
190 MethodLiveness::print_times();
191 }
192 #ifdef ASSERT
193 if (CollectIndexSetStatistics) {
194 IndexSet::print_statistics();
195 }
196 #endif // ASSERT
197 #endif // COMPILER2
198 if (CountCompiledCalls) {
199 print_method_invocation_histogram();
200 }
201 if (ProfileInterpreter || Tier1UpdateMethodData) {
202 print_method_profiling_data();
203 }
204 if (TimeCompiler) {
205 COMPILER2_PRESENT(Compile::print_timers();)
206 }
207 if (TimeCompilationPolicy) {
208 CompilationPolicy::policy()->print_time();
209 }
210 if (TimeOopMap) {
211 GenerateOopMap::print_time();
212 }
213 if (ProfilerCheckIntervals) {
214 PeriodicTask::print_intervals();
215 }
216 if (PrintSymbolTableSizeHistogram) {
217 SymbolTable::print_histogram();
218 }
219 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
220 BytecodeCounter::print();
221 }
222 if (PrintBytecodePairHistogram) {
223 BytecodePairHistogram::print();
224 }
225
226 if (PrintCodeCache) {
227 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
228 CodeCache::print();
229 }
230
231 if (PrintCodeCache2) {
232 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
233 CodeCache::print_internals();
234 }
235
236 if (PrintClassStatistics) {
237 SystemDictionary::print_class_statistics();
238 }
239 if (PrintMethodStatistics) {
240 SystemDictionary::print_method_statistics();
241 }
242
243 if (PrintVtableStats) {
244 klassVtable::print_statistics();
245 klassItable::print_statistics();
246 }
247 if (VerifyOops) {
248 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());
249 }
250
251 print_bytecode_count();
252 if (WizardMode) {
253 tty->print("allocation stats: ");
254 alloc_stats.print();
255 tty->cr();
256 }
257
258 if (PrintSystemDictionaryAtExit) {
259 SystemDictionary::print();
260 }
261
262 if (PrintBiasedLockingStatistics) {
263 BiasedLocking::print_counters();
264 }
265
266 #ifdef ENABLE_ZAP_DEAD_LOCALS
267 #ifdef COMPILER2
268 if (ZapDeadCompiledLocals) {
269 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count);
270 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count);
271 }
272 #endif // COMPILER2
273 #endif // ENABLE_ZAP_DEAD_LOCALS
274 }
275
276 #else // PRODUCT MODE STATISTICS
277
278 void print_statistics() {
279
280 if (CITime) {
281 CompileBroker::print_times();
282 }
283 #ifdef COMPILER2
284 if (PrintPreciseBiasedLockingStatistics) {
285 OptoRuntime::print_named_counters();
286 }
287 #endif
288 if (PrintBiasedLockingStatistics) {
289 BiasedLocking::print_counters();
290 }
291 }
292
293 #endif
294
295
296 // Helper class for registering on_exit calls through JVM_OnExit
297
298 extern "C" {
299 typedef void (*__exit_proc)(void);
300 }
301
302 class ExitProc : public CHeapObj {
303 private:
304 __exit_proc _proc;
305 // void (*_proc)(void);
306 ExitProc* _next;
307 public:
308 // ExitProc(void (*proc)(void)) {
309 ExitProc(__exit_proc proc) {
310 _proc = proc;
311 _next = NULL;
312 }
313 void evaluate() { _proc(); }
314 ExitProc* next() const { return _next; }
315 void set_next(ExitProc* next) { _next = next; }
316 };
317
318
319 // Linked list of registered on_exit procedures
320
321 static ExitProc* exit_procs = NULL;
322
323
324 extern "C" {
325 void register_on_exit_function(void (*func)(void)) {
326 ExitProc *entry = new ExitProc(func);
327 // Classic vm does not throw an exception in case the allocation failed,
328 if (entry != NULL) {
329 entry->set_next(exit_procs);
330 exit_procs = entry;
331 }
332 }
333 }
334
335 // Note: before_exit() can be executed only once, if more than one threads
336 // are trying to shutdown the VM at the same time, only one thread
337 // can run before_exit() and all other threads must wait.
338 void before_exit(JavaThread * thread) {
339 #define BEFORE_EXIT_NOT_RUN 0
340 #define BEFORE_EXIT_RUNNING 1
341 #define BEFORE_EXIT_DONE 2
342 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
343
344 // Note: don't use a Mutex to guard the entire before_exit(), as
345 // JVMTI post_thread_end_event and post_vm_death_event will run native code.
346 // A CAS or OSMutex would work just fine but then we need to manipulate
347 // thread state for Safepoint. Here we use Monitor wait() and notify_all()
348 // for synchronization.
349 { MutexLocker ml(BeforeExit_lock);
350 switch (_before_exit_status) {
351 case BEFORE_EXIT_NOT_RUN:
352 _before_exit_status = BEFORE_EXIT_RUNNING;
353 break;
354 case BEFORE_EXIT_RUNNING:
355 while (_before_exit_status == BEFORE_EXIT_RUNNING) {
356 BeforeExit_lock->wait();
357 }
358 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
359 return;
360 case BEFORE_EXIT_DONE:
361 return;
362 }
363 }
364
365 // The only difference between this and Win32's _onexit procs is that
366 // this version is invoked before any threads get killed.
367 ExitProc* current = exit_procs;
368 while (current != NULL) {
369 ExitProc* next = current->next();
370 current->evaluate();
371 delete current;
372 current = next;
373 }
374
375 // Hang forever on exit if we're reporting an error.
376 if (ShowMessageBoxOnError && is_error_reported()) {
377 os::infinite_sleep();
378 }
379
380 // Terminate watcher thread - must before disenrolling any periodic task
381 WatcherThread::stop();
382
383 // Print statistics gathered (profiling ...)
384 if (Arguments::has_profile()) {
385 FlatProfiler::disengage();
386 FlatProfiler::print(10);
387 }
388
389 // shut down the StatSampler task
390 StatSampler::disengage();
391 StatSampler::destroy();
392
393 // shut down the TimeMillisUpdateTask
394 if (CacheTimeMillis) {
395 TimeMillisUpdateTask::disengage();
396 }
397
398 #ifndef SERIALGC
399 // stop CMS threads
400 if (UseConcMarkSweepGC) {
401 ConcurrentMarkSweepThread::stop();
402 }
403 #endif // SERIALGC
404
405 // Print GC/heap related information.
406 if (PrintGCDetails) {
407 Universe::print();
408 AdaptiveSizePolicyOutput(0);
409 }
410
411
412 if (Arguments::has_alloc_profile()) {
413 HandleMark hm;
414 // Do one last collection to enumerate all the objects
415 // allocated since the last one.
416 Universe::heap()->collect(GCCause::_allocation_profiler);
417 AllocationProfiler::disengage();
418 AllocationProfiler::print(0);
419 }
420
421 if (PrintBytecodeHistogram) {
422 BytecodeHistogram::print();
423 }
424
425 if (JvmtiExport::should_post_thread_life()) {
426 JvmtiExport::post_thread_end(thread);
427 }
428 // Always call even when there are not JVMTI environments yet, since environments
429 // may be attached late and JVMTI must track phases of VM execution
430 JvmtiExport::post_vm_death();
431 Threads::shutdown_vm_agents();
432
433 // Terminate the signal thread
434 // Note: we don't wait until it actually dies.
435 os::terminate_signal_thread();
436
437 print_statistics();
438 Universe::heap()->print_tracing_info();
439
440 VTune::exit();
441
442 { MutexLocker ml(BeforeExit_lock);
443 _before_exit_status = BEFORE_EXIT_DONE;
444 BeforeExit_lock->notify_all();
445 }
446
447 #undef BEFORE_EXIT_NOT_RUN
448 #undef BEFORE_EXIT_RUNNING
449 #undef BEFORE_EXIT_DONE
450 }
451
452 void vm_exit(int code) {
453 Thread* thread = ThreadLocalStorage::thread_index() == -1 ? NULL
454 : ThreadLocalStorage::get_thread_slow();
455 if (thread == NULL) {
456 // we have serious problems -- just exit
457 vm_direct_exit(code);
458 }
459
460 if (VMThread::vm_thread() != NULL) {
461 // Fire off a VM_Exit operation to bring VM to a safepoint and exit
462 VM_Exit op(code);
463 if (thread->is_Java_thread())
464 ((JavaThread*)thread)->set_thread_state(_thread_in_vm);
465 VMThread::execute(&op);
466 // should never reach here; but in case something wrong with VM Thread.
467 vm_direct_exit(code);
468 } else {
469 // VM thread is gone, just exit
470 vm_direct_exit(code);
471 }
472 ShouldNotReachHere();
473 }
474
475 void notify_vm_shutdown() {
476 // For now, just a dtrace probe.
477 HS_DTRACE_PROBE(hotspot, vm__shutdown);
478 }
479
480 void vm_direct_exit(int code) {
481 notify_vm_shutdown();
482 ::exit(code);
483 }
484
485 void vm_perform_shutdown_actions() {
486 // Warning: do not call 'exit_globals()' here. All threads are still running.
487 // Calling 'exit_globals()' will disable thread-local-storage and cause all
488 // kinds of assertions to trigger in debug mode.
489 if (is_init_completed()) {
490 Thread* thread = Thread::current();
491 if (thread->is_Java_thread()) {
492 // We are leaving the VM, set state to native (in case any OS exit
493 // handlers call back to the VM)
494 JavaThread* jt = (JavaThread*)thread;
495 // Must always be walkable or have no last_Java_frame when in
496 // thread_in_native
497 jt->frame_anchor()->make_walkable(jt);
498 jt->set_thread_state(_thread_in_native);
499 }
500 }
501 notify_vm_shutdown();
502 }
503
504 void vm_shutdown()
505 {
506 vm_perform_shutdown_actions();
507 os::shutdown();
508 }
509
510 void vm_abort() {
511 vm_perform_shutdown_actions();
512 os::abort(PRODUCT_ONLY(false));
513 ShouldNotReachHere();
514 }
515
516 void vm_notify_during_shutdown(const char* error, const char* message) {
517 if (error != NULL) {
518 tty->print_cr("Error occurred during initialization of VM");
519 tty->print("%s", error);
520 if (message != NULL) {
521 tty->print_cr(": %s", message);
522 }
523 else {
524 tty->cr();
525 }
526 }
527 if (ShowMessageBoxOnError && WizardMode) {
528 fatal("Error occurred during initialization of VM");
529 }
530 }
531
532 void vm_exit_during_initialization(Handle exception) {
533 tty->print_cr("Error occurred during initialization of VM");
534 // If there are exceptions on this thread it must be cleared
535 // first and here. Any future calls to EXCEPTION_MARK requires
536 // that no pending exceptions exist.
537 Thread *THREAD = Thread::current();
538 if (HAS_PENDING_EXCEPTION) {
539 CLEAR_PENDING_EXCEPTION;
540 }
541 java_lang_Throwable::print(exception, tty);
542 tty->cr();
543 java_lang_Throwable::print_stack_trace(exception(), tty);
544 tty->cr();
545 vm_notify_during_shutdown(NULL, NULL);
546 vm_abort();
547 }
548
549 void vm_exit_during_initialization(symbolHandle ex, const char* message) {
550 ResourceMark rm;
551 vm_notify_during_shutdown(ex->as_C_string(), message);
552 vm_abort();
553 }
554
555 void vm_exit_during_initialization(const char* error, const char* message) {
556 vm_notify_during_shutdown(error, message);
557 vm_abort();
558 }
559
560 void vm_shutdown_during_initialization(const char* error, const char* message) {
561 vm_notify_during_shutdown(error, message);
562 vm_shutdown();
563 }
564
565 jdk_version_info JDK_Version::_version_info = {0};
566 bool JDK_Version::_pre_jdk16_version = false;
567 int JDK_Version::_jdk_version = 0;
568
569 void JDK_Version::initialize() {
570 void *lib_handle = os::native_java_library();
571 jdk_version_info_fn_t func =
572 CAST_TO_FN_PTR(jdk_version_info_fn_t, hpi::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
573
574 if (func == NULL) {
575 // JDK older than 1.6
576 _pre_jdk16_version = true;
577 return;
578 }
579
580 if (func != NULL) {
581 (*func)(&_version_info, sizeof(_version_info));
582 }
583 if (jdk_major_version() == 1) {
584 _jdk_version = jdk_minor_version();
585 } else {
586 // If the release version string is changed to n.x.x (e.g. 7.0.0) in a future release
587 _jdk_version = jdk_major_version();
588 }
589 }
590
591 void JDK_Version_init() {
592 JDK_Version::initialize();
593 }