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 */
24
25 #include "precompiled.hpp"
26 #include "classfile/classLoader.hpp"
27 #include "classfile/symbolTable.hpp"
28 #include "classfile/systemDictionary.hpp"
29 #include "code/codeCache.hpp"
30 #include "compiler/compileBroker.hpp"
31 #include "compiler/compilerOracle.hpp"
32 #include "interpreter/bytecodeHistogram.hpp"
33 #include "memory/genCollectedHeap.hpp"
34 #include "memory/oopFactory.hpp"
35 #include "memory/universe.hpp"
36 #include "oops/constantPool.hpp"
37 #include "oops/generateOopMap.hpp"
38 #include "oops/instanceKlass.hpp"
39 #include "oops/instanceOop.hpp"
40 #include "oops/method.hpp"
41 #include "oops/objArrayOop.hpp"
42 #include "oops/oop.inline.hpp"
43 #include "oops/symbol.hpp"
44 #include "prims/jvmtiExport.hpp"
45 #include "runtime/arguments.hpp"
46 #include "runtime/biasedLocking.hpp"
47 #include "runtime/compilationPolicy.hpp"
48 #include "runtime/fprofiler.hpp"
49 #include "runtime/init.hpp"
50 #include "runtime/interfaceSupport.hpp"
51 #include "runtime/java.hpp"
52 #include "runtime/memprofiler.hpp"
53 #include "runtime/sharedRuntime.hpp"
54 #include "runtime/statSampler.hpp"
55 #include "runtime/sweeper.hpp"
56 #include "runtime/task.hpp"
57 #include "runtime/thread.inline.hpp"
58 #include "runtime/timer.hpp"
59 #include "runtime/vm_operations.hpp"
60 #include "services/memReporter.hpp"
61 #include "services/memTracker.hpp"
62 #include "trace/tracing.hpp"
63 #include "utilities/dtrace.hpp"
64 #include "utilities/globalDefinitions.hpp"
65 #include "utilities/histogram.hpp"
66 #include "utilities/macros.hpp"
67 #include "utilities/vmError.hpp"
68 #ifdef TARGET_ARCH_x86
69 # include "vm_version_x86.hpp"
70 #endif
71 #ifdef TARGET_ARCH_sparc
72 # include "vm_version_sparc.hpp"
73 #endif
74 #ifdef TARGET_ARCH_zero
75 # include "vm_version_zero.hpp"
76 #endif
77 #ifdef TARGET_ARCH_arm
78 # include "vm_version_arm.hpp"
79 #endif
80 #ifdef TARGET_ARCH_ppc
81 # include "vm_version_ppc.hpp"
82 #endif
83 #if INCLUDE_ALL_GCS
84 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp"
85 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
86 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
87 #endif // INCLUDE_ALL_GCS
88 #ifdef COMPILER1
89 #include "c1/c1_Compiler.hpp"
90 #include "c1/c1_Runtime1.hpp"
91 #endif
92 #ifdef COMPILER2
93 #include "code/compiledIC.hpp"
94 #include "compiler/methodLiveness.hpp"
95 #include "opto/compile.hpp"
96 #include "opto/indexSet.hpp"
97 #include "opto/runtime.hpp"
98 #endif
99
100
101 GrowableArray<Method*>* collected_profiled_methods;
102
103 int compare_methods(Method** a, Method** b) {
104 // %%% there can be 32-bit overflow here
105 return ((*b)->invocation_count() + (*b)->compiled_invocation_count())
106 - ((*a)->invocation_count() + (*a)->compiled_invocation_count());
107 }
108
109 void collect_profiled_methods(Method* m) {
110 Thread* thread = Thread::current();
111 // This HandleMark prevents a huge amount of handles from being added
112 // to the metadata_handles() array on the thread.
113 HandleMark hm(thread);
114 methodHandle mh(thread, m);
115 if ((m->method_data() != NULL) &&
116 (PrintMethodData || CompilerOracle::should_print(mh))) {
117 collected_profiled_methods->push(m);
118 }
119 }
120
121 void print_method_profiling_data() {
122 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) {
123 ResourceMark rm;
124 HandleMark hm;
125 collected_profiled_methods = new GrowableArray<Method*>(1024);
126 ClassLoaderDataGraph::methods_do(collect_profiled_methods);
127 collected_profiled_methods->sort(&compare_methods);
128
129 int count = collected_profiled_methods->length();
130 int total_size = 0;
131 if (count > 0) {
132 for (int index = 0; index < count; index++) {
133 Method* m = collected_profiled_methods->at(index);
134 ttyLocker ttyl;
135 tty->print_cr("------------------------------------------------------------------------");
136 m->print_invocation_count();
137 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes());
138 tty->cr();
139 // Dump data on parameters if any
140 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) {
141 tty->fill_to(2);
142 m->method_data()->parameters_type_data()->print_data_on(tty);
143 }
144 m->print_codes();
145 total_size += m->method_data()->size_in_bytes();
146 }
147 tty->print_cr("------------------------------------------------------------------------");
148 tty->print_cr("Total MDO size: %d bytes", total_size);
149 }
150 }
151 }
152
153
154 #ifndef PRODUCT
155
156 // Statistics printing (method invocation histogram)
157
158 GrowableArray<Method*>* collected_invoked_methods;
159
160 void collect_invoked_methods(Method* m) {
161 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {
162 collected_invoked_methods->push(m);
163 }
164 }
165
166
167
168
169 void print_method_invocation_histogram() {
170 ResourceMark rm;
171 HandleMark hm;
172 collected_invoked_methods = new GrowableArray<Method*>(1024);
173 SystemDictionary::methods_do(collect_invoked_methods);
174 collected_invoked_methods->sort(&compare_methods);
175 //
176 tty->cr();
177 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff);
178 tty->cr();
179 tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
180 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,
181 synch_total = 0, nativ_total = 0, acces_total = 0;
182 for (int index = 0; index < collected_invoked_methods->length(); index++) {
183 Method* m = collected_invoked_methods->at(index);
184 int c = m->invocation_count() + m->compiled_invocation_count();
185 if (c >= MethodHistogramCutoff) m->print_invocation_count();
186 int_total += m->invocation_count();
187 comp_total += m->compiled_invocation_count();
188 if (m->is_final()) final_total += c;
189 if (m->is_static()) static_total += c;
190 if (m->is_synchronized()) synch_total += c;
191 if (m->is_native()) nativ_total += c;
192 if (m->is_accessor()) acces_total += c;
193 }
194 tty->cr();
195 total = int_total + comp_total;
196 tty->print_cr("Invocations summary:");
197 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total);
198 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total);
199 tty->print_cr("\t%9d (100%%) total", total);
200 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total);
201 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total);
202 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total);
203 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total);
204 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total);
205 tty->cr();
206 SharedRuntime::print_call_statistics(comp_total);
207 }
208
209 void print_bytecode_count() {
210 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
211 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
212 }
213 }
214
215 AllocStats alloc_stats;
216
217
218
219 // General statistics printing (profiling ...)
220 void print_statistics() {
221 #ifdef ASSERT
222
223 if (CountRuntimeCalls) {
224 extern Histogram *RuntimeHistogram;
225 RuntimeHistogram->print();
226 }
227
228 if (CountJNICalls) {
229 extern Histogram *JNIHistogram;
230 JNIHistogram->print();
231 }
232
233 if (CountJVMCalls) {
234 extern Histogram *JVMHistogram;
235 JVMHistogram->print();
236 }
237
238 #endif
239
240 if (MemProfiling) {
241 MemProfiler::disengage();
242 }
243
244 if (CITime) {
245 CompileBroker::print_times();
246 }
247
248 #ifdef COMPILER1
249 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {
250 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);
251 Runtime1::print_statistics();
252 Deoptimization::print_statistics();
253 SharedRuntime::print_statistics();
254 nmethod::print_statistics();
255 }
256 #endif /* COMPILER1 */
257
258 #ifdef COMPILER2
259 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {
260 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);
261 Compile::print_statistics();
262 #ifndef COMPILER1
263 Deoptimization::print_statistics();
264 nmethod::print_statistics();
265 SharedRuntime::print_statistics();
266 #endif //COMPILER1
267 os::print_statistics();
268 }
269
270 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {
271 OptoRuntime::print_named_counters();
272 }
273
274 if (TimeLivenessAnalysis) {
275 MethodLiveness::print_times();
276 }
277 #ifdef ASSERT
278 if (CollectIndexSetStatistics) {
279 IndexSet::print_statistics();
280 }
281 #endif // ASSERT
282 #endif // COMPILER2
283 if (CountCompiledCalls) {
284 print_method_invocation_histogram();
285 }
286
287 print_method_profiling_data();
288
289 if (TimeCompiler) {
290 COMPILER2_PRESENT(Compile::print_timers();)
291 }
292 if (TimeCompilationPolicy) {
293 CompilationPolicy::policy()->print_time();
294 }
295 if (TimeOopMap) {
296 GenerateOopMap::print_time();
297 }
298 if (ProfilerCheckIntervals) {
299 PeriodicTask::print_intervals();
300 }
301 if (PrintSymbolTableSizeHistogram) {
302 SymbolTable::print_histogram();
303 }
304 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
305 BytecodeCounter::print();
306 }
307 if (PrintBytecodePairHistogram) {
308 BytecodePairHistogram::print();
309 }
310
311 if (PrintCodeCache) {
312 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
313 CodeCache::print();
314 }
315
316 if (PrintMethodFlushingStatistics) {
317 NMethodSweeper::print();
318 }
319
320 if (PrintCodeCache2) {
321 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
322 CodeCache::print_internals();
323 }
324
325 if (PrintClassStatistics) {
326 SystemDictionary::print_class_statistics();
327 }
328 if (PrintMethodStatistics) {
329 SystemDictionary::print_method_statistics();
330 }
331
332 if (PrintVtableStats) {
333 klassVtable::print_statistics();
334 klassItable::print_statistics();
335 }
336 if (VerifyOops) {
337 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());
338 }
339
340 print_bytecode_count();
341 if (PrintMallocStatistics) {
342 tty->print("allocation stats: ");
343 alloc_stats.print();
344 tty->cr();
345 }
346
347 if (PrintSystemDictionaryAtExit) {
348 SystemDictionary::print();
349 }
350
351 if (PrintBiasedLockingStatistics) {
352 BiasedLocking::print_counters();
353 }
354
355 #ifdef ENABLE_ZAP_DEAD_LOCALS
356 #ifdef COMPILER2
357 if (ZapDeadCompiledLocals) {
358 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count);
359 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count);
360 }
361 #endif // COMPILER2
362 #endif // ENABLE_ZAP_DEAD_LOCALS
363 // Native memory tracking data
364 if (PrintNMTStatistics) {
365 if (MemTracker::is_on()) {
366 BaselineTTYOutputer outputer(tty);
367 MemTracker::print_memory_usage(outputer, K, false);
368 } else {
369 tty->print_cr(MemTracker::reason());
370 }
371 }
372 }
373
374 #else // PRODUCT MODE STATISTICS
375
376 void print_statistics() {
377
378 if (PrintMethodData) {
379 print_method_profiling_data();
380 }
381
382 if (CITime) {
383 CompileBroker::print_times();
384 }
385
386 if (PrintCodeCache) {
387 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
388 CodeCache::print();
389 }
390
391 if (PrintMethodFlushingStatistics) {
392 NMethodSweeper::print();
393 }
394
395 #ifdef COMPILER2
396 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {
397 OptoRuntime::print_named_counters();
398 }
399 #endif
400 if (PrintBiasedLockingStatistics) {
401 BiasedLocking::print_counters();
402 }
403
404 // Native memory tracking data
405 if (PrintNMTStatistics) {
406 if (MemTracker::is_on()) {
407 BaselineTTYOutputer outputer(tty);
408 MemTracker::print_memory_usage(outputer, K, false);
409 } else {
410 tty->print_cr(MemTracker::reason());
411 }
412 }
413 }
414
415 #endif
416
417
418 // Helper class for registering on_exit calls through JVM_OnExit
419
420 extern "C" {
421 typedef void (*__exit_proc)(void);
422 }
423
424 class ExitProc : public CHeapObj<mtInternal> {
425 private:
426 __exit_proc _proc;
427 // void (*_proc)(void);
428 ExitProc* _next;
429 public:
430 // ExitProc(void (*proc)(void)) {
431 ExitProc(__exit_proc proc) {
432 _proc = proc;
433 _next = NULL;
434 }
435 void evaluate() { _proc(); }
436 ExitProc* next() const { return _next; }
437 void set_next(ExitProc* next) { _next = next; }
438 };
439
440
441 // Linked list of registered on_exit procedures
442
443 static ExitProc* exit_procs = NULL;
444
445
446 extern "C" {
447 void register_on_exit_function(void (*func)(void)) {
448 ExitProc *entry = new ExitProc(func);
449 // Classic vm does not throw an exception in case the allocation failed,
450 if (entry != NULL) {
451 entry->set_next(exit_procs);
452 exit_procs = entry;
453 }
454 }
455 }
456
457 // Note: before_exit() can be executed only once, if more than one threads
458 // are trying to shutdown the VM at the same time, only one thread
459 // can run before_exit() and all other threads must wait.
460 void before_exit(JavaThread * thread) {
461 #define BEFORE_EXIT_NOT_RUN 0
462 #define BEFORE_EXIT_RUNNING 1
463 #define BEFORE_EXIT_DONE 2
464 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
465
466 // Note: don't use a Mutex to guard the entire before_exit(), as
467 // JVMTI post_thread_end_event and post_vm_death_event will run native code.
468 // A CAS or OSMutex would work just fine but then we need to manipulate
469 // thread state for Safepoint. Here we use Monitor wait() and notify_all()
470 // for synchronization.
471 { MutexLocker ml(BeforeExit_lock);
472 switch (_before_exit_status) {
473 case BEFORE_EXIT_NOT_RUN:
474 _before_exit_status = BEFORE_EXIT_RUNNING;
475 break;
476 case BEFORE_EXIT_RUNNING:
477 while (_before_exit_status == BEFORE_EXIT_RUNNING) {
478 BeforeExit_lock->wait();
479 }
480 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
481 return;
482 case BEFORE_EXIT_DONE:
483 return;
484 }
485 }
486
487 // The only difference between this and Win32's _onexit procs is that
488 // this version is invoked before any threads get killed.
489 ExitProc* current = exit_procs;
490 while (current != NULL) {
491 ExitProc* next = current->next();
492 current->evaluate();
493 delete current;
494 current = next;
495 }
496
497 // Hang forever on exit if we're reporting an error.
498 if (ShowMessageBoxOnError && is_error_reported()) {
499 os::infinite_sleep();
500 }
501
502 // Terminate watcher thread - must before disenrolling any periodic task
503 if (PeriodicTask::num_tasks() > 0)
504 WatcherThread::stop();
505
506 // Print statistics gathered (profiling ...)
507 if (Arguments::has_profile()) {
508 FlatProfiler::disengage();
509 FlatProfiler::print(10);
510 }
511
512 // shut down the StatSampler task
513 StatSampler::disengage();
514 StatSampler::destroy();
515
516 // We do not need to explicitly stop concurrent GC threads because the
517 // JVM will be taken down at a safepoint when such threads are inactive --
518 // except for some concurrent G1 threads, see (comment in)
519 // Threads::destroy_vm().
520
521 // Print GC/heap related information.
522 if (PrintGCDetails) {
523 Universe::print();
524 AdaptiveSizePolicyOutput(0);
525 if (Verbose) {
526 ClassLoaderDataGraph::dump_on(gclog_or_tty);
527 }
528 }
529
530 if (PrintBytecodeHistogram) {
531 BytecodeHistogram::print();
532 }
533
534 if (JvmtiExport::should_post_thread_life()) {
535 JvmtiExport::post_thread_end(thread);
536 }
537
538
539 EventThreadEnd event;
540 if (event.should_commit()) {
541 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
542 event.commit();
543 }
544
545 // Always call even when there are not JVMTI environments yet, since environments
546 // may be attached late and JVMTI must track phases of VM execution
547 JvmtiExport::post_vm_death();
548 Threads::shutdown_vm_agents();
549
550 // Terminate the signal thread
551 // Note: we don't wait until it actually dies.
552 os::terminate_signal_thread();
553
554 print_statistics();
555 Universe::heap()->print_tracing_info();
556
557 { MutexLocker ml(BeforeExit_lock);
558 _before_exit_status = BEFORE_EXIT_DONE;
559 BeforeExit_lock->notify_all();
560 }
561
562 // Shutdown NMT before exit. Otherwise,
563 // it will run into trouble when system destroys static variables.
564 MemTracker::shutdown(MemTracker::NMT_normal);
565
566 if (VerifyStringTableAtExit) {
567 int fail_cnt = 0;
568 {
569 MutexLocker ml(StringTable_lock);
570 fail_cnt = StringTable::verify_and_compare_entries();
571 }
572
573 if (fail_cnt != 0) {
574 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt);
575 guarantee(fail_cnt == 0, "unexpected StringTable verification failures");
576 }
577 }
578
579 #undef BEFORE_EXIT_NOT_RUN
580 #undef BEFORE_EXIT_RUNNING
581 #undef BEFORE_EXIT_DONE
582 }
583
584 void vm_exit(int code) {
585 Thread* thread = ThreadLocalStorage::is_initialized() ?
586 ThreadLocalStorage::get_thread_slow() : NULL;
587 if (thread == NULL) {
588 // we have serious problems -- just exit
589 vm_direct_exit(code);
590 }
591
592 if (VMThread::vm_thread() != NULL) {
593 // Fire off a VM_Exit operation to bring VM to a safepoint and exit
594 VM_Exit op(code);
595 if (thread->is_Java_thread())
596 ((JavaThread*)thread)->set_thread_state(_thread_in_vm);
597 VMThread::execute(&op);
598 // should never reach here; but in case something wrong with VM Thread.
599 vm_direct_exit(code);
600 } else {
601 // VM thread is gone, just exit
602 vm_direct_exit(code);
603 }
604 ShouldNotReachHere();
605 }
606
607 void notify_vm_shutdown() {
608 // For now, just a dtrace probe.
609 HOTSPOT_VM_SHUTDOWN();
610 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG();
611 }
612
613 void vm_direct_exit(int code) {
614 notify_vm_shutdown();
615 os::wait_for_keypress_at_exit();
616 ::exit(code);
617 }
618
619 void vm_perform_shutdown_actions() {
620 // Warning: do not call 'exit_globals()' here. All threads are still running.
621 // Calling 'exit_globals()' will disable thread-local-storage and cause all
622 // kinds of assertions to trigger in debug mode.
623 if (is_init_completed()) {
624 Thread* thread = ThreadLocalStorage::is_initialized() ?
625 ThreadLocalStorage::get_thread_slow() : NULL;
626 if (thread != NULL && thread->is_Java_thread()) {
627 // We are leaving the VM, set state to native (in case any OS exit
628 // handlers call back to the VM)
629 JavaThread* jt = (JavaThread*)thread;
630 // Must always be walkable or have no last_Java_frame when in
631 // thread_in_native
632 jt->frame_anchor()->make_walkable(jt);
633 jt->set_thread_state(_thread_in_native);
634 }
635 }
636 notify_vm_shutdown();
637 }
638
639 void vm_shutdown()
640 {
641 vm_perform_shutdown_actions();
642 os::wait_for_keypress_at_exit();
643 os::shutdown();
644 }
645
646 void vm_abort(bool dump_core) {
647 vm_perform_shutdown_actions();
648 os::wait_for_keypress_at_exit();
649 os::abort(dump_core);
650 ShouldNotReachHere();
651 }
652
653 void vm_notify_during_shutdown(const char* error, const char* message) {
654 if (error != NULL) {
655 tty->print_cr("Error occurred during initialization of VM");
656 tty->print("%s", error);
657 if (message != NULL) {
658 tty->print_cr(": %s", message);
659 }
660 else {
661 tty->cr();
662 }
663 }
664 if (ShowMessageBoxOnError && WizardMode) {
665 fatal("Error occurred during initialization of VM");
666 }
667 }
668
669 void vm_exit_during_initialization(Handle exception) {
670 tty->print_cr("Error occurred during initialization of VM");
671 // If there are exceptions on this thread it must be cleared
672 // first and here. Any future calls to EXCEPTION_MARK requires
673 // that no pending exceptions exist.
674 Thread *THREAD = Thread::current();
675 if (HAS_PENDING_EXCEPTION) {
676 CLEAR_PENDING_EXCEPTION;
677 }
678 java_lang_Throwable::print(exception, tty);
679 tty->cr();
680 java_lang_Throwable::print_stack_trace(exception(), tty);
681 tty->cr();
682 vm_notify_during_shutdown(NULL, NULL);
683
684 // Failure during initialization, we don't want to dump core
685 vm_abort(false);
686 }
687
688 void vm_exit_during_initialization(Symbol* ex, const char* message) {
689 ResourceMark rm;
690 vm_notify_during_shutdown(ex->as_C_string(), message);
691
692 // Failure during initialization, we don't want to dump core
693 vm_abort(false);
694 }
695
696 void vm_exit_during_initialization(const char* error, const char* message) {
697 vm_notify_during_shutdown(error, message);
698
699 // Failure during initialization, we don't want to dump core
700 vm_abort(false);
701 }
702
703 void vm_shutdown_during_initialization(const char* error, const char* message) {
704 vm_notify_during_shutdown(error, message);
705 vm_shutdown();
706 }
707
708 JDK_Version JDK_Version::_current;
709 const char* JDK_Version::_runtime_name;
710 const char* JDK_Version::_runtime_version;
711
712 void JDK_Version::initialize() {
713 jdk_version_info info;
714 assert(!_current.is_valid(), "Don't initialize twice");
715
716 void *lib_handle = os::native_java_library();
717 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t,
718 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
719
720 if (func == NULL) {
721 // JDK older than 1.6
722 _current._partially_initialized = true;
723 } else {
724 (*func)(&info, sizeof(info));
725
726 int major = JDK_VERSION_MAJOR(info.jdk_version);
727 int minor = JDK_VERSION_MINOR(info.jdk_version);
728 int micro = JDK_VERSION_MICRO(info.jdk_version);
729 int build = JDK_VERSION_BUILD(info.jdk_version);
730 if (major == 1 && minor > 4) {
731 // We represent "1.5.0" as "5.0", but 1.4.2 as itself.
732 major = minor;
733 minor = micro;
734 micro = 0;
735 }
736 _current = JDK_Version(major, minor, micro, info.update_version,
737 info.special_update_version, build,
738 info.thread_park_blocker == 1,
739 info.post_vm_init_hook_enabled == 1,
740 info.pending_list_uses_discovered_field == 1);
741 }
742 }
743
744 void JDK_Version::fully_initialize(
745 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) {
746 // This is only called when current is less than 1.6 and we've gotten
747 // far enough in the initialization to determine the exact version.
748 assert(major < 6, "not needed for JDK version >= 6");
749 assert(is_partially_initialized(), "must not initialize");
750 if (major < 5) {
751 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc.
752 micro = minor;
753 minor = major;
754 major = 1;
755 }
756 _current = JDK_Version(major, minor, micro, update);
757 }
758
759 void JDK_Version_init() {
760 JDK_Version::initialize();
761 }
762
763 static int64_t encode_jdk_version(const JDK_Version& v) {
764 return
765 ((int64_t)v.major_version() << (BitsPerByte * 5)) |
766 ((int64_t)v.minor_version() << (BitsPerByte * 4)) |
767 ((int64_t)v.micro_version() << (BitsPerByte * 3)) |
768 ((int64_t)v.update_version() << (BitsPerByte * 2)) |
769 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) |
770 ((int64_t)v.build_number() << (BitsPerByte * 0));
771 }
772
773 int JDK_Version::compare(const JDK_Version& other) const {
774 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)");
775 if (!is_partially_initialized() && other.is_partially_initialized()) {
776 return -(other.compare(*this)); // flip the comparators
777 }
778 assert(!other.is_partially_initialized(), "Not initialized yet");
779 if (is_partially_initialized()) {
780 assert(other.major_version() >= 6,
781 "Invalid JDK version comparison during initialization");
782 return -1;
783 } else {
784 uint64_t e = encode_jdk_version(*this);
785 uint64_t o = encode_jdk_version(other);
786 return (e > o) ? 1 : ((e == o) ? 0 : -1);
787 }
788 }
789
790 void JDK_Version::to_string(char* buffer, size_t buflen) const {
791 size_t index = 0;
792 if (!is_valid()) {
793 jio_snprintf(buffer, buflen, "%s", "(uninitialized)");
794 } else if (is_partially_initialized()) {
795 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0");
796 } else {
797 index += jio_snprintf(
798 &buffer[index], buflen - index, "%d.%d", _major, _minor);
799 if (_micro > 0) {
800 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro);
801 }
802 if (_update > 0) {
803 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update);
804 }
805 if (_special > 0) {
806 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special);
807 }
808 if (_build > 0) {
809 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build);
810 }
811 }
812 }