1 /*
2 * Copyright (c) 1997, 2016, 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 "jfr/jfrEvents.hpp"
34 #include "jfr/support/jfrThreadId.hpp"
35 #include "memory/genCollectedHeap.hpp"
36 #include "memory/oopFactory.hpp"
37 #include "memory/universe.hpp"
38 #include "oops/constantPool.hpp"
39 #include "oops/generateOopMap.hpp"
40 #include "oops/instanceKlass.hpp"
41 #include "oops/instanceOop.hpp"
42 #include "oops/method.hpp"
43 #include "oops/objArrayOop.hpp"
44 #include "oops/oop.inline.hpp"
45 #include "oops/symbol.hpp"
46 #include "prims/jvmtiExport.hpp"
47 #include "runtime/arguments.hpp"
48 #include "runtime/biasedLocking.hpp"
49 #include "runtime/compilationPolicy.hpp"
50 #include "runtime/deoptimization.hpp"
51 #include "runtime/fprofiler.hpp"
52 #include "runtime/init.hpp"
53 #include "runtime/interfaceSupport.hpp"
54 #include "runtime/java.hpp"
55 #include "runtime/memprofiler.hpp"
56 #include "runtime/sharedRuntime.hpp"
57 #include "runtime/statSampler.hpp"
58 #include "runtime/sweeper.hpp"
59 #include "runtime/task.hpp"
60 #include "runtime/thread.inline.hpp"
61 #include "runtime/timer.hpp"
62 #include "runtime/vm_operations.hpp"
63 #include "services/memTracker.hpp"
64 #include "utilities/dtrace.hpp"
65 #include "utilities/globalDefinitions.hpp"
66 #include "utilities/histogram.hpp"
67 #include "utilities/macros.hpp"
68 #include "utilities/vmError.hpp"
69 #ifdef TARGET_ARCH_x86
70 # include "vm_version_x86.hpp"
71 #endif
72 #ifdef TARGET_ARCH_aarch64
73 # include "vm_version_aarch64.hpp"
74 #endif
75 #ifdef TARGET_ARCH_sparc
76 # include "vm_version_sparc.hpp"
77 #endif
78 #ifdef TARGET_ARCH_zero
79 # include "vm_version_zero.hpp"
80 #endif
81 #ifdef TARGET_ARCH_arm
82 # include "vm_version_arm.hpp"
83 #endif
84 #ifdef TARGET_ARCH_ppc
85 # include "vm_version_ppc.hpp"
86 #endif
87 #if INCLUDE_ALL_GCS
88 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp"
89 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
90 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
91 #endif // INCLUDE_ALL_GCS
92 #ifdef COMPILER1
93 #include "c1/c1_Compiler.hpp"
94 #include "c1/c1_Runtime1.hpp"
95 #endif
96 #ifdef COMPILER2
97 #include "code/compiledIC.hpp"
98 #include "compiler/methodLiveness.hpp"
99 #include "opto/compile.hpp"
100 #include "opto/indexSet.hpp"
101 #include "opto/runtime.hpp"
102 #endif
103 #if INCLUDE_JFR
104 #include "jfr/jfr.hpp"
105 #endif
106
107 #ifndef USDT2
108 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown);
109 #endif /* !USDT2 */
110
111 #ifndef PRODUCT
112
113 // Statistics printing (method invocation histogram)
114
115 GrowableArray<Method*>* collected_invoked_methods;
116
117 void collect_invoked_methods(Method* m) {
118 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {
119 collected_invoked_methods->push(m);
120 }
121 }
122
123 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
124
125 GrowableArray<Method*>* collected_profiled_methods;
126
127 void collect_profiled_methods(Method* m) {
128 Thread* thread = Thread::current();
129 // This HandleMark prevents a huge amount of handles from being added
130 // to the metadata_handles() array on the thread.
131 HandleMark hm(thread);
132 methodHandle mh(thread, m);
133 if ((m->method_data() != NULL) &&
134 (PrintMethodData || CompilerOracle::should_print(mh))) {
135 collected_profiled_methods->push(m);
136 }
137 }
138
139
140 int compare_methods(Method** a, Method** b) {
141 // %%% there can be 32-bit overflow here
142 return ((*b)->invocation_count() + (*b)->compiled_invocation_count())
143 - ((*a)->invocation_count() + (*a)->compiled_invocation_count());
144 }
145
146
147 void print_method_invocation_histogram() {
148 ResourceMark rm;
149 HandleMark hm;
150 collected_invoked_methods = new GrowableArray<Method*>(1024);
151 SystemDictionary::methods_do(collect_invoked_methods);
152 collected_invoked_methods->sort(&compare_methods);
153 //
154 tty->cr();
155 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff);
156 tty->cr();
157 tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
158 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,
159 synch_total = 0, nativ_total = 0, acces_total = 0;
160 for (int index = 0; index < collected_invoked_methods->length(); index++) {
161 Method* m = collected_invoked_methods->at(index);
162 int c = m->invocation_count() + m->compiled_invocation_count();
163 if (c >= MethodHistogramCutoff) m->print_invocation_count();
164 int_total += m->invocation_count();
165 comp_total += m->compiled_invocation_count();
166 if (m->is_final()) final_total += c;
167 if (m->is_static()) static_total += c;
168 if (m->is_synchronized()) synch_total += c;
169 if (m->is_native()) nativ_total += c;
170 if (m->is_accessor()) acces_total += c;
171 }
172 tty->cr();
173 total = int_total + comp_total;
174 tty->print_cr("Invocations summary:");
175 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total);
176 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total);
177 tty->print_cr("\t%9d (100%%) total", total);
178 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total);
179 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total);
180 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total);
181 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total);
182 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total);
183 tty->cr();
184 SharedRuntime::print_call_statistics(comp_total);
185 }
186
187 void print_method_profiling_data() {
188 ResourceMark rm;
189 HandleMark hm;
190 collected_profiled_methods = new GrowableArray<Method*>(1024);
191 SystemDictionary::methods_do(collect_profiled_methods);
192 collected_profiled_methods->sort(&compare_methods);
193
194 int count = collected_profiled_methods->length();
195 int total_size = 0;
196 if (count > 0) {
197 for (int index = 0; index < count; index++) {
198 Method* m = collected_profiled_methods->at(index);
199 ttyLocker ttyl;
200 tty->print_cr("------------------------------------------------------------------------");
201 //m->print_name(tty);
202 m->print_invocation_count();
203 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes());
204 tty->cr();
205 // Dump data on parameters if any
206 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) {
207 tty->fill_to(2);
208 m->method_data()->parameters_type_data()->print_data_on(tty);
209 }
210 m->print_codes();
211 total_size += m->method_data()->size_in_bytes();
212 }
213 tty->print_cr("------------------------------------------------------------------------");
214 tty->print_cr("Total MDO size: %d bytes", total_size);
215 }
216 }
217
218 void print_bytecode_count() {
219 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
220 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
221 }
222 }
223
224 AllocStats alloc_stats;
225
226
227
228 // General statistics printing (profiling ...)
229 void print_statistics() {
230 #ifdef ASSERT
231
232 if (CountRuntimeCalls) {
233 extern Histogram *RuntimeHistogram;
234 RuntimeHistogram->print();
235 }
236
237 if (CountJNICalls) {
238 extern Histogram *JNIHistogram;
239 JNIHistogram->print();
240 }
241
242 if (CountJVMCalls) {
243 extern Histogram *JVMHistogram;
244 JVMHistogram->print();
245 }
246
247 #endif
248
249 if (MemProfiling) {
250 MemProfiler::disengage();
251 }
252
253 if (CITime) {
254 CompileBroker::print_times();
255 }
256
257 #ifdef COMPILER1
258 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {
259 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);
260 Runtime1::print_statistics();
261 Deoptimization::print_statistics();
262 SharedRuntime::print_statistics();
263 nmethod::print_statistics();
264 }
265 #endif /* COMPILER1 */
266
267 #ifdef COMPILER2
268 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {
269 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);
270 Compile::print_statistics();
271 #ifndef COMPILER1
272 Deoptimization::print_statistics();
273 nmethod::print_statistics();
274 SharedRuntime::print_statistics();
275 #endif //COMPILER1
276 os::print_statistics();
277 }
278
279 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {
280 OptoRuntime::print_named_counters();
281 }
282
283 if (TimeLivenessAnalysis) {
284 MethodLiveness::print_times();
285 }
286 #ifdef ASSERT
287 if (CollectIndexSetStatistics) {
288 IndexSet::print_statistics();
289 }
290 #endif // ASSERT
291 #endif // COMPILER2
292 if (CountCompiledCalls) {
293 print_method_invocation_histogram();
294 }
295 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) {
296 print_method_profiling_data();
297 }
298 if (TimeCompiler) {
299 COMPILER2_PRESENT(Compile::print_timers();)
300 }
301 if (TimeCompilationPolicy) {
302 CompilationPolicy::policy()->print_time();
303 }
304 if (TimeOopMap) {
305 GenerateOopMap::print_time();
306 }
307 if (ProfilerCheckIntervals) {
308 PeriodicTask::print_intervals();
309 }
310 if (PrintSymbolTableSizeHistogram) {
311 SymbolTable::print_histogram();
312 }
313 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
314 BytecodeCounter::print();
315 }
316 if (PrintBytecodePairHistogram) {
317 BytecodePairHistogram::print();
318 }
319
320 if (PrintCodeCache) {
321 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
322 CodeCache::print();
323 }
324
325 if (PrintMethodFlushingStatistics) {
326 NMethodSweeper::print();
327 }
328
329 if (PrintCodeCache2) {
330 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
331 CodeCache::print_internals();
332 }
333
334 if (PrintClassStatistics) {
335 SystemDictionary::print_class_statistics();
336 }
337 if (PrintMethodStatistics) {
338 SystemDictionary::print_method_statistics();
339 }
340
341 if (PrintVtableStats) {
342 klassVtable::print_statistics();
343 klassItable::print_statistics();
344 }
345 if (VerifyOops && Verbose) {
346 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());
347 }
348
349 print_bytecode_count();
350 if (PrintMallocStatistics) {
351 tty->print("allocation stats: ");
352 alloc_stats.print();
353 tty->cr();
354 }
355
356 if (PrintSystemDictionaryAtExit) {
357 SystemDictionary::print();
358 }
359
360 if (PrintBiasedLockingStatistics) {
361 BiasedLocking::print_counters();
362 }
363
364 #ifdef ENABLE_ZAP_DEAD_LOCALS
365 #ifdef COMPILER2
366 if (ZapDeadCompiledLocals) {
367 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count);
368 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count);
369 }
370 #endif // COMPILER2
371 #endif // ENABLE_ZAP_DEAD_LOCALS
372 // Native memory tracking data
373 if (PrintNMTStatistics) {
374 MemTracker::final_report(tty);
375 }
376 }
377
378 #else // PRODUCT MODE STATISTICS
379
380 void print_statistics() {
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 MemTracker::final_report(tty);
407 }
408 }
409
410 #endif
411
412
413 // Helper class for registering on_exit calls through JVM_OnExit
414
415 extern "C" {
416 typedef void (*__exit_proc)(void);
417 }
418
419 class ExitProc : public CHeapObj<mtInternal> {
420 private:
421 __exit_proc _proc;
422 // void (*_proc)(void);
423 ExitProc* _next;
424 public:
425 // ExitProc(void (*proc)(void)) {
426 ExitProc(__exit_proc proc) {
427 _proc = proc;
428 _next = NULL;
429 }
430 void evaluate() { _proc(); }
431 ExitProc* next() const { return _next; }
432 void set_next(ExitProc* next) { _next = next; }
433 };
434
435
436 // Linked list of registered on_exit procedures
437
438 static ExitProc* exit_procs = NULL;
439
440
441 extern "C" {
442 void register_on_exit_function(void (*func)(void)) {
443 ExitProc *entry = new ExitProc(func);
444 // Classic vm does not throw an exception in case the allocation failed,
445 if (entry != NULL) {
446 entry->set_next(exit_procs);
447 exit_procs = entry;
448 }
449 }
450 }
451
452 // Note: before_exit() can be executed only once, if more than one threads
453 // are trying to shutdown the VM at the same time, only one thread
454 // can run before_exit() and all other threads must wait.
455 void before_exit(JavaThread * thread) {
456 #define BEFORE_EXIT_NOT_RUN 0
457 #define BEFORE_EXIT_RUNNING 1
458 #define BEFORE_EXIT_DONE 2
459 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
460
461 // Note: don't use a Mutex to guard the entire before_exit(), as
462 // JVMTI post_thread_end_event and post_vm_death_event will run native code.
463 // A CAS or OSMutex would work just fine but then we need to manipulate
464 // thread state for Safepoint. Here we use Monitor wait() and notify_all()
465 // for synchronization.
466 { MutexLocker ml(BeforeExit_lock);
467 switch (_before_exit_status) {
468 case BEFORE_EXIT_NOT_RUN:
469 _before_exit_status = BEFORE_EXIT_RUNNING;
470 break;
471 case BEFORE_EXIT_RUNNING:
472 while (_before_exit_status == BEFORE_EXIT_RUNNING) {
473 BeforeExit_lock->wait();
474 }
475 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
476 return;
477 case BEFORE_EXIT_DONE:
478 return;
479 }
480 }
481
482 // The only difference between this and Win32's _onexit procs is that
483 // this version is invoked before any threads get killed.
484 ExitProc* current = exit_procs;
485 while (current != NULL) {
486 ExitProc* next = current->next();
487 current->evaluate();
488 delete current;
489 current = next;
490 }
491
492 // Hang forever on exit if we're reporting an error.
493 if (ShowMessageBoxOnError && is_error_reported()) {
494 os::infinite_sleep();
495 }
496
497 // Terminate watcher thread - must before disenrolling any periodic task
498 if (PeriodicTask::num_tasks() > 0)
499 WatcherThread::stop();
500
501 // Print statistics gathered (profiling ...)
502 if (Arguments::has_profile()) {
503 FlatProfiler::disengage();
504 FlatProfiler::print(10);
505 }
506
507 // shut down the StatSampler task
508 StatSampler::disengage();
509 StatSampler::destroy();
510
511 // Stop concurrent GC threads
512 Universe::heap()->stop();
513
514 // Print GC/heap related information.
515 if (PrintGCDetails) {
516 Universe::print();
517 AdaptiveSizePolicyOutput(0);
518 if (Verbose) {
519 ClassLoaderDataGraph::dump_on(gclog_or_tty);
520 }
521 }
522
523 if (PrintBytecodeHistogram) {
524 BytecodeHistogram::print();
525 }
526
527 if (JvmtiExport::should_post_thread_life()) {
528 JvmtiExport::post_thread_end(thread);
529 }
530
531
532 EventThreadEnd event;
533 if (event.should_commit()) {
534 event.set_thread(JFR_THREAD_ID(thread));
535 event.commit();
536 }
537
538 JFR_ONLY(Jfr::on_vm_shutdown();)
539
540 // Always call even when there are not JVMTI environments yet, since environments
541 // may be attached late and JVMTI must track phases of VM execution
542 JvmtiExport::post_vm_death();
543 Threads::shutdown_vm_agents();
544
545 // Terminate the signal thread
546 // Note: we don't wait until it actually dies.
547 os::terminate_signal_thread();
548
549 print_statistics();
550 Universe::heap()->print_tracing_info();
551
552 { MutexLocker ml(BeforeExit_lock);
553 _before_exit_status = BEFORE_EXIT_DONE;
554 BeforeExit_lock->notify_all();
555 }
556
557 if (VerifyStringTableAtExit) {
558 int fail_cnt = 0;
559 {
560 MutexLocker ml(StringTable_lock);
561 fail_cnt = StringTable::verify_and_compare_entries();
562 }
563
564 if (fail_cnt != 0) {
565 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt);
566 guarantee(fail_cnt == 0, "unexpected StringTable verification failures");
567 }
568 }
569
570 #undef BEFORE_EXIT_NOT_RUN
571 #undef BEFORE_EXIT_RUNNING
572 #undef BEFORE_EXIT_DONE
573 }
574
575 void vm_exit(int code) {
576 Thread* thread = ThreadLocalStorage::is_initialized() ?
577 ThreadLocalStorage::get_thread_slow() : NULL;
578 if (thread == NULL) {
579 // we have serious problems -- just exit
580 vm_direct_exit(code);
581 }
582
583 if (VMThread::vm_thread() != NULL) {
584 // Fire off a VM_Exit operation to bring VM to a safepoint and exit
585 VM_Exit op(code);
586 if (thread->is_Java_thread())
587 ((JavaThread*)thread)->set_thread_state(_thread_in_vm);
588 VMThread::execute(&op);
589 // should never reach here; but in case something wrong with VM Thread.
590 vm_direct_exit(code);
591 } else {
592 // VM thread is gone, just exit
593 vm_direct_exit(code);
594 }
595 ShouldNotReachHere();
596 }
597
598 void notify_vm_shutdown() {
599 // For now, just a dtrace probe.
600 #ifndef USDT2
601 HS_DTRACE_PROBE(hotspot, vm__shutdown);
602 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG();
603 #else /* USDT2 */
604 HOTSPOT_VM_SHUTDOWN();
605 #endif /* USDT2 */
606 }
607
608 void vm_direct_exit(int code) {
609 notify_vm_shutdown();
610 os::wait_for_keypress_at_exit();
611 ::exit(code);
612 }
613
614 void vm_perform_shutdown_actions() {
615 // Warning: do not call 'exit_globals()' here. All threads are still running.
616 // Calling 'exit_globals()' will disable thread-local-storage and cause all
617 // kinds of assertions to trigger in debug mode.
618 if (is_init_completed()) {
619 Thread* thread = ThreadLocalStorage::is_initialized() ?
620 ThreadLocalStorage::get_thread_slow() : NULL;
621 if (thread != NULL && thread->is_Java_thread()) {
622 // We are leaving the VM, set state to native (in case any OS exit
623 // handlers call back to the VM)
624 JavaThread* jt = (JavaThread*)thread;
625 // Must always be walkable or have no last_Java_frame when in
626 // thread_in_native
627 jt->frame_anchor()->make_walkable(jt);
628 jt->set_thread_state(_thread_in_native);
629 }
630 }
631 notify_vm_shutdown();
632 }
633
634 void vm_shutdown()
635 {
636 vm_perform_shutdown_actions();
637 os::wait_for_keypress_at_exit();
638 os::shutdown();
639 }
640
641 void vm_abort(bool dump_core) {
642 vm_perform_shutdown_actions();
643 os::wait_for_keypress_at_exit();
644 os::abort(dump_core);
645 ShouldNotReachHere();
646 }
647
648 void vm_notify_during_shutdown(const char* error, const char* message) {
649 if (error != NULL) {
650 tty->print_cr("Error occurred during initialization of VM");
651 tty->print("%s", error);
652 if (message != NULL) {
653 tty->print_cr(": %s", message);
654 }
655 else {
656 tty->cr();
657 }
658 }
659 if (ShowMessageBoxOnError && WizardMode) {
660 fatal("Error occurred during initialization of VM");
661 }
662 }
663
664 void vm_exit_during_initialization(Handle exception) {
665 tty->print_cr("Error occurred during initialization of VM");
666 // If there are exceptions on this thread it must be cleared
667 // first and here. Any future calls to EXCEPTION_MARK requires
668 // that no pending exceptions exist.
669 Thread *THREAD = Thread::current();
670 if (HAS_PENDING_EXCEPTION) {
671 CLEAR_PENDING_EXCEPTION;
672 }
673 java_lang_Throwable::print(exception, tty);
674 tty->cr();
675 java_lang_Throwable::print_stack_trace(exception(), tty);
676 tty->cr();
677 vm_notify_during_shutdown(NULL, NULL);
678
679 // Failure during initialization, we don't want to dump core
680 vm_abort(false);
681 }
682
683 void vm_exit_during_initialization(Symbol* ex, const char* message) {
684 ResourceMark rm;
685 vm_notify_during_shutdown(ex->as_C_string(), message);
686
687 // Failure during initialization, we don't want to dump core
688 vm_abort(false);
689 }
690
691 void vm_exit_during_initialization(const char* error, const char* message) {
692 vm_notify_during_shutdown(error, message);
693
694 // Failure during initialization, we don't want to dump core
695 vm_abort(false);
696 }
697
698 void vm_shutdown_during_initialization(const char* error, const char* message) {
699 vm_notify_during_shutdown(error, message);
700 vm_shutdown();
701 }
702
703 JDK_Version JDK_Version::_current;
704 const char* JDK_Version::_runtime_name;
705 const char* JDK_Version::_runtime_version;
706
707 void JDK_Version::initialize() {
708 jdk_version_info info;
709 assert(!_current.is_valid(), "Don't initialize twice");
710
711 void *lib_handle = os::native_java_library();
712 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t,
713 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
714
715 if (func == NULL) {
716 // JDK older than 1.6
717 _current._partially_initialized = true;
718 } else {
719 (*func)(&info, sizeof(info));
720
721 int major = JDK_VERSION_MAJOR(info.jdk_version);
722 int minor = JDK_VERSION_MINOR(info.jdk_version);
723 int micro = JDK_VERSION_MICRO(info.jdk_version);
724 int build = JDK_VERSION_BUILD(info.jdk_version);
725 if (major == 1 && minor > 4) {
726 // We represent "1.5.0" as "5.0", but 1.4.2 as itself.
727 major = minor;
728 minor = micro;
729 micro = 0;
730 }
731 _current = JDK_Version(major, minor, micro, info.update_version,
732 info.special_update_version, build,
733 info.thread_park_blocker == 1,
734 info.post_vm_init_hook_enabled == 1,
735 info.pending_list_uses_discovered_field == 1);
736 }
737 }
738
739 void JDK_Version::fully_initialize(
740 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) {
741 // This is only called when current is less than 1.6 and we've gotten
742 // far enough in the initialization to determine the exact version.
743 assert(major < 6, "not needed for JDK version >= 6");
744 assert(is_partially_initialized(), "must not initialize");
745 if (major < 5) {
746 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc.
747 micro = minor;
748 minor = major;
749 major = 1;
750 }
751 _current = JDK_Version(major, minor, micro, update);
752 }
753
754 void JDK_Version_init() {
755 JDK_Version::initialize();
756 }
757
758 static int64_t encode_jdk_version(const JDK_Version& v) {
759 return
760 ((int64_t)v.major_version() << (BitsPerByte * 5)) |
761 ((int64_t)v.minor_version() << (BitsPerByte * 4)) |
762 ((int64_t)v.micro_version() << (BitsPerByte * 3)) |
763 ((int64_t)v.update_version() << (BitsPerByte * 2)) |
764 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) |
765 ((int64_t)v.build_number() << (BitsPerByte * 0));
766 }
767
768 int JDK_Version::compare(const JDK_Version& other) const {
769 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)");
770 if (!is_partially_initialized() && other.is_partially_initialized()) {
771 return -(other.compare(*this)); // flip the comparators
772 }
773 assert(!other.is_partially_initialized(), "Not initialized yet");
774 if (is_partially_initialized()) {
775 assert(other.major_version() >= 6,
776 "Invalid JDK version comparison during initialization");
777 return -1;
778 } else {
779 uint64_t e = encode_jdk_version(*this);
780 uint64_t o = encode_jdk_version(other);
781 return (e > o) ? 1 : ((e == o) ? 0 : -1);
782 }
783 }
784
785 void JDK_Version::to_string(char* buffer, size_t buflen) const {
786 assert(buffer && buflen > 0, "call with useful buffer");
787 size_t index = 0;
788 if (!is_valid()) {
789 jio_snprintf(buffer, buflen, "%s", "(uninitialized)");
790 } else if (is_partially_initialized()) {
791 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0");
792 } else {
793 int rc = jio_snprintf(
794 &buffer[index], buflen - index, "%d.%d", _major, _minor);
795 if (rc == -1) return;
796 index += rc;
797 if (_micro > 0) {
798 rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _micro);
799 if (rc == -1) return;
800 index += rc;
801 }
802 if (_update > 0) {
803 rc = jio_snprintf(&buffer[index], buflen - index, "_%02d", _update);
804 if (rc == -1) return;
805 index += rc;
806 }
807 if (_special > 0) {
808 rc = jio_snprintf(&buffer[index], buflen - index, "%c", _special);
809 if (rc == -1) return;
810 index += rc;
811 }
812 if (_build > 0) {
813 rc = jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build);
814 if (rc == -1) return;
815 index += rc;
816 }
817 }
818 }