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/task.hpp"
56 #include "runtime/thread.inline.hpp"
57 #include "runtime/timer.hpp"
58 #include "runtime/vm_operations.hpp"
59 #include "services/memReporter.hpp"
60 #include "services/memTracker.hpp"
61 #include "trace/tracing.hpp"
62 #include "utilities/dtrace.hpp"
63 #include "utilities/globalDefinitions.hpp"
64 #include "utilities/histogram.hpp"
65 #include "utilities/macros.hpp"
66 #include "utilities/vmError.hpp"
67 #ifdef TARGET_ARCH_x86
68 # include "vm_version_x86.hpp"
69 #endif
70 #ifdef TARGET_ARCH_sparc
71 # include "vm_version_sparc.hpp"
72 #endif
73 #ifdef TARGET_ARCH_zero
74 # include "vm_version_zero.hpp"
75 #endif
76 #ifdef TARGET_ARCH_arm
77 # include "vm_version_arm.hpp"
78 #endif
79 #ifdef TARGET_ARCH_ppc
80 # include "vm_version_ppc.hpp"
81 #endif
82 #if INCLUDE_ALL_GCS
83 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp"
84 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
85 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
86 #endif // INCLUDE_ALL_GCS
87 #ifdef COMPILER1
88 #include "c1/c1_Compiler.hpp"
89 #include "c1/c1_Runtime1.hpp"
90 #endif
91 #ifdef COMPILER2
92 #include "code/compiledIC.hpp"
93 #include "compiler/methodLiveness.hpp"
94 #include "opto/compile.hpp"
95 #include "opto/indexSet.hpp"
96 #include "opto/runtime.hpp"
97 #endif
98
99 #ifndef USDT2
100 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown);
101 #endif /* !USDT2 */
102
103 #ifndef PRODUCT
104
105 // Statistics printing (method invocation histogram)
106
107 GrowableArray<Method*>* collected_invoked_methods;
108
109 void collect_invoked_methods(Method* m) {
110 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {
111 collected_invoked_methods->push(m);
112 }
113 }
114
115
116 GrowableArray<Method*>* collected_profiled_methods;
117
118 void collect_profiled_methods(Method* m) {
119 Thread* thread = Thread::current();
120 // This HandleMark prevents a huge amount of handles from being added
121 // to the metadata_handles() array on the thread.
122 HandleMark hm(thread);
123 methodHandle mh(thread, m);
124 if ((m->method_data() != NULL) &&
125 (PrintMethodData || CompilerOracle::should_print(mh))) {
126 collected_profiled_methods->push(m);
127 }
128 }
129
130
131 int compare_methods(Method** a, Method** b) {
132 // %%% there can be 32-bit overflow here
133 return ((*b)->invocation_count() + (*b)->compiled_invocation_count())
134 - ((*a)->invocation_count() + (*a)->compiled_invocation_count());
135 }
136
137
138 void print_method_invocation_histogram() {
139 ResourceMark rm;
140 HandleMark hm;
141 collected_invoked_methods = new GrowableArray<Method*>(1024);
142 SystemDictionary::methods_do(collect_invoked_methods);
143 collected_invoked_methods->sort(&compare_methods);
144 //
145 tty->cr();
146 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff);
147 tty->cr();
148 tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
149 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,
150 synch_total = 0, nativ_total = 0, acces_total = 0;
151 for (int index = 0; index < collected_invoked_methods->length(); index++) {
152 Method* m = collected_invoked_methods->at(index);
153 int c = m->invocation_count() + m->compiled_invocation_count();
154 if (c >= MethodHistogramCutoff) m->print_invocation_count();
155 int_total += m->invocation_count();
156 comp_total += m->compiled_invocation_count();
157 if (m->is_final()) final_total += c;
158 if (m->is_static()) static_total += c;
159 if (m->is_synchronized()) synch_total += c;
160 if (m->is_native()) nativ_total += c;
161 if (m->is_accessor()) acces_total += c;
162 }
163 tty->cr();
164 total = int_total + comp_total;
165 tty->print_cr("Invocations summary:");
166 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total);
167 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total);
168 tty->print_cr("\t%9d (100%%) total", total);
169 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total);
170 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total);
171 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total);
172 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total);
173 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total);
174 tty->cr();
175 SharedRuntime::print_call_statistics(comp_total);
176 }
177
178 void print_method_profiling_data() {
179 ResourceMark rm;
180 HandleMark hm;
181 collected_profiled_methods = new GrowableArray<Method*>(1024);
182 SystemDictionary::methods_do(collect_profiled_methods);
183 collected_profiled_methods->sort(&compare_methods);
184
185 int count = collected_profiled_methods->length();
186 int total_size = 0;
187 if (count > 0) {
188 for (int index = 0; index < count; index++) {
189 Method* m = collected_profiled_methods->at(index);
190 ttyLocker ttyl;
191 tty->print_cr("------------------------------------------------------------------------");
192 //m->print_name(tty);
193 m->print_invocation_count();
194 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes());
195 tty->cr();
196 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) {
197 tty->fill_to(2);
198 m->method_data()->parameters_type_data()->print_data_on(tty);
199 }
200 m->print_codes();
201 total_size += m->method_data()->size_in_bytes();
202 }
203 tty->print_cr("------------------------------------------------------------------------");
204 tty->print_cr("Total MDO size: %d bytes", total_size);
205 }
206 }
207
208 void print_bytecode_count() {
209 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
210 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
211 }
212 }
213
214 AllocStats alloc_stats;
215
216
217
218 // General statistics printing (profiling ...)
219
220 void print_statistics() {
221
222 #ifdef ASSERT
223
224 if (CountRuntimeCalls) {
225 extern Histogram *RuntimeHistogram;
226 RuntimeHistogram->print();
227 }
228
229 if (CountJNICalls) {
230 extern Histogram *JNIHistogram;
231 JNIHistogram->print();
232 }
233
234 if (CountJVMCalls) {
235 extern Histogram *JVMHistogram;
236 JVMHistogram->print();
237 }
238
239 #endif
240
241 if (MemProfiling) {
242 MemProfiler::disengage();
243 }
244
245 if (CITime) {
246 CompileBroker::print_times();
247 }
248
249 #ifdef COMPILER1
250 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {
251 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);
252 Runtime1::print_statistics();
253 Deoptimization::print_statistics();
254 SharedRuntime::print_statistics();
255 nmethod::print_statistics();
256 }
257 #endif /* COMPILER1 */
258
259 #ifdef COMPILER2
260 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {
261 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);
262 Compile::print_statistics();
263 #ifndef COMPILER1
264 Deoptimization::print_statistics();
265 nmethod::print_statistics();
266 SharedRuntime::print_statistics();
267 #endif //COMPILER1
268 os::print_statistics();
269 }
270
271 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics) {
272 OptoRuntime::print_named_counters();
273 }
274
275 if (TimeLivenessAnalysis) {
276 MethodLiveness::print_times();
277 }
278 #ifdef ASSERT
279 if (CollectIndexSetStatistics) {
280 IndexSet::print_statistics();
281 }
282 #endif // ASSERT
283 #endif // COMPILER2
284 if (CountCompiledCalls) {
285 print_method_invocation_histogram();
286 }
287 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) {
288 print_method_profiling_data();
289 }
290 if (TimeCompiler) {
291 COMPILER2_PRESENT(Compile::print_timers();)
292 }
293 if (TimeCompilationPolicy) {
294 CompilationPolicy::policy()->print_time();
295 }
296 if (TimeOopMap) {
297 GenerateOopMap::print_time();
298 }
299 if (ProfilerCheckIntervals) {
300 PeriodicTask::print_intervals();
301 }
302 if (PrintSymbolTableSizeHistogram) {
303 SymbolTable::print_histogram();
304 }
305 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
306 BytecodeCounter::print();
307 }
308 if (PrintBytecodePairHistogram) {
309 BytecodePairHistogram::print();
310 }
311
312 if (PrintCodeCache) {
313 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
314 CodeCache::print();
315 }
316
317 if (PrintCodeCache2) {
318 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
319 CodeCache::print_internals();
320 }
321
322 if (PrintClassStatistics) {
323 SystemDictionary::print_class_statistics();
324 }
325 if (PrintMethodStatistics) {
326 SystemDictionary::print_method_statistics();
327 }
328
329 if (PrintVtableStats) {
330 klassVtable::print_statistics();
331 klassItable::print_statistics();
332 }
333 if (VerifyOops) {
334 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());
335 }
336
337 print_bytecode_count();
338 if (PrintMallocStatistics) {
339 tty->print("allocation stats: ");
340 alloc_stats.print();
341 tty->cr();
342 }
343
344 if (PrintSystemDictionaryAtExit) {
345 SystemDictionary::print();
346 }
347
348 if (PrintBiasedLockingStatistics) {
349 BiasedLocking::print_counters();
350 }
351
352 #ifdef ENABLE_ZAP_DEAD_LOCALS
353 #ifdef COMPILER2
354 if (ZapDeadCompiledLocals) {
355 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count);
356 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count);
357 }
358 #endif // COMPILER2
359 #endif // ENABLE_ZAP_DEAD_LOCALS
360 // Native memory tracking data
361 if (PrintNMTStatistics) {
362 if (MemTracker::is_on()) {
363 BaselineTTYOutputer outputer(tty);
364 MemTracker::print_memory_usage(outputer, K, false);
365 } else {
366 tty->print_cr(MemTracker::reason());
367 }
368 }
369 }
370
371 #else // PRODUCT MODE STATISTICS
372
373 void print_statistics() {
374
375 if (CITime) {
376 CompileBroker::print_times();
377 }
378
379 if (PrintCodeCache) {
380 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
381 CodeCache::print();
382 }
383
384 #ifdef COMPILER2
385 if (PrintPreciseBiasedLockingStatistics) {
386 OptoRuntime::print_named_counters();
387 }
388 #endif
389 if (PrintBiasedLockingStatistics) {
390 BiasedLocking::print_counters();
391 }
392
393 // Native memory tracking data
394 if (PrintNMTStatistics) {
395 if (MemTracker::is_on()) {
396 BaselineTTYOutputer outputer(tty);
397 MemTracker::print_memory_usage(outputer, K, false);
398 } else {
399 tty->print_cr(MemTracker::reason());
400 }
401 }
402 }
403
404 #endif
405
406
407 // Helper class for registering on_exit calls through JVM_OnExit
408
409 extern "C" {
410 typedef void (*__exit_proc)(void);
411 }
412
413 class ExitProc : public CHeapObj<mtInternal> {
414 private:
415 __exit_proc _proc;
416 // void (*_proc)(void);
417 ExitProc* _next;
418 public:
419 // ExitProc(void (*proc)(void)) {
420 ExitProc(__exit_proc proc) {
421 _proc = proc;
422 _next = NULL;
423 }
424 void evaluate() { _proc(); }
425 ExitProc* next() const { return _next; }
426 void set_next(ExitProc* next) { _next = next; }
427 };
428
429
430 // Linked list of registered on_exit procedures
431
432 static ExitProc* exit_procs = NULL;
433
434
435 extern "C" {
436 void register_on_exit_function(void (*func)(void)) {
437 ExitProc *entry = new ExitProc(func);
438 // Classic vm does not throw an exception in case the allocation failed,
439 if (entry != NULL) {
440 entry->set_next(exit_procs);
441 exit_procs = entry;
442 }
443 }
444 }
445
446 // Note: before_exit() can be executed only once, if more than one threads
447 // are trying to shutdown the VM at the same time, only one thread
448 // can run before_exit() and all other threads must wait.
449 void before_exit(JavaThread * thread) {
450 #define BEFORE_EXIT_NOT_RUN 0
451 #define BEFORE_EXIT_RUNNING 1
452 #define BEFORE_EXIT_DONE 2
453 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
454
455 // Note: don't use a Mutex to guard the entire before_exit(), as
456 // JVMTI post_thread_end_event and post_vm_death_event will run native code.
457 // A CAS or OSMutex would work just fine but then we need to manipulate
458 // thread state for Safepoint. Here we use Monitor wait() and notify_all()
459 // for synchronization.
460 { MutexLocker ml(BeforeExit_lock);
461 switch (_before_exit_status) {
462 case BEFORE_EXIT_NOT_RUN:
463 _before_exit_status = BEFORE_EXIT_RUNNING;
464 break;
465 case BEFORE_EXIT_RUNNING:
466 while (_before_exit_status == BEFORE_EXIT_RUNNING) {
467 BeforeExit_lock->wait();
468 }
469 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
470 return;
471 case BEFORE_EXIT_DONE:
472 return;
473 }
474 }
475
476 // The only difference between this and Win32's _onexit procs is that
477 // this version is invoked before any threads get killed.
478 ExitProc* current = exit_procs;
479 while (current != NULL) {
480 ExitProc* next = current->next();
481 current->evaluate();
482 delete current;
483 current = next;
484 }
485
486 // Hang forever on exit if we're reporting an error.
487 if (ShowMessageBoxOnError && is_error_reported()) {
488 os::infinite_sleep();
489 }
490
491 // Terminate watcher thread - must before disenrolling any periodic task
492 if (PeriodicTask::num_tasks() > 0)
493 WatcherThread::stop();
494
495 // Print statistics gathered (profiling ...)
496 if (Arguments::has_profile()) {
497 FlatProfiler::disengage();
498 FlatProfiler::print(10);
499 }
500
501 // shut down the StatSampler task
502 StatSampler::disengage();
503 StatSampler::destroy();
504
505 // We do not need to explicitly stop concurrent GC threads because the
506 // JVM will be taken down at a safepoint when such threads are inactive --
507 // except for some concurrent G1 threads, see (comment in)
508 // Threads::destroy_vm().
509
510 // Print GC/heap related information.
511 if (PrintGCDetails) {
512 Universe::print();
513 AdaptiveSizePolicyOutput(0);
514 if (Verbose) {
515 ClassLoaderDataGraph::dump_on(gclog_or_tty);
516 }
517 }
518
519 if (PrintBytecodeHistogram) {
520 BytecodeHistogram::print();
521 }
522
523 if (JvmtiExport::should_post_thread_life()) {
524 JvmtiExport::post_thread_end(thread);
525 }
526
527
528 EventThreadEnd event;
529 if (event.should_commit()) {
530 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
531 event.commit();
532 }
533
534 // Always call even when there are not JVMTI environments yet, since environments
535 // may be attached late and JVMTI must track phases of VM execution
536 JvmtiExport::post_vm_death();
537 Threads::shutdown_vm_agents();
538
539 // Terminate the signal thread
540 // Note: we don't wait until it actually dies.
541 os::terminate_signal_thread();
542
543 print_statistics();
544 Universe::heap()->print_tracing_info();
545
546 { MutexLocker ml(BeforeExit_lock);
547 _before_exit_status = BEFORE_EXIT_DONE;
548 BeforeExit_lock->notify_all();
549 }
550
551 // Shutdown NMT before exit. Otherwise,
552 // it will run into trouble when system destroys static variables.
553 MemTracker::shutdown(MemTracker::NMT_normal);
554
555 if (VerifyStringTableAtExit) {
556 int fail_cnt = 0;
557 {
558 MutexLocker ml(StringTable_lock);
559 fail_cnt = StringTable::verify_and_compare_entries();
560 }
561
562 if (fail_cnt != 0) {
563 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt);
564 guarantee(fail_cnt == 0, "unexpected StringTable verification failures");
565 }
566 }
567
568 #undef BEFORE_EXIT_NOT_RUN
569 #undef BEFORE_EXIT_RUNNING
570 #undef BEFORE_EXIT_DONE
571 }
572
573 void vm_exit(int code) {
574 Thread* thread = ThreadLocalStorage::is_initialized() ?
575 ThreadLocalStorage::get_thread_slow() : NULL;
576 if (thread == NULL) {
577 // we have serious problems -- just exit
578 vm_direct_exit(code);
579 }
580
581 if (VMThread::vm_thread() != NULL) {
582 // Fire off a VM_Exit operation to bring VM to a safepoint and exit
583 VM_Exit op(code);
584 if (thread->is_Java_thread())
585 ((JavaThread*)thread)->set_thread_state(_thread_in_vm);
586 VMThread::execute(&op);
587 // should never reach here; but in case something wrong with VM Thread.
588 vm_direct_exit(code);
589 } else {
590 // VM thread is gone, just exit
591 vm_direct_exit(code);
592 }
593 ShouldNotReachHere();
594 }
595
596 void notify_vm_shutdown() {
597 // For now, just a dtrace probe.
598 #ifndef USDT2
599 HS_DTRACE_PROBE(hotspot, vm__shutdown);
600 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG();
601 #else /* USDT2 */
602 HOTSPOT_VM_SHUTDOWN();
603 #endif /* USDT2 */
604 }
605
606 void vm_direct_exit(int code) {
607 notify_vm_shutdown();
608 os::wait_for_keypress_at_exit();
609 ::exit(code);
610 }
611
612 void vm_perform_shutdown_actions() {
613 // Warning: do not call 'exit_globals()' here. All threads are still running.
614 // Calling 'exit_globals()' will disable thread-local-storage and cause all
615 // kinds of assertions to trigger in debug mode.
616 if (is_init_completed()) {
617 Thread* thread = ThreadLocalStorage::is_initialized() ?
618 ThreadLocalStorage::get_thread_slow() : NULL;
619 if (thread != NULL && thread->is_Java_thread()) {
620 // We are leaving the VM, set state to native (in case any OS exit
621 // handlers call back to the VM)
622 JavaThread* jt = (JavaThread*)thread;
623 // Must always be walkable or have no last_Java_frame when in
624 // thread_in_native
625 jt->frame_anchor()->make_walkable(jt);
626 jt->set_thread_state(_thread_in_native);
627 }
628 }
629 notify_vm_shutdown();
630 }
631
632 void vm_shutdown()
633 {
634 vm_perform_shutdown_actions();
635 os::wait_for_keypress_at_exit();
636 os::shutdown();
637 }
638
639 void vm_abort(bool dump_core) {
640 vm_perform_shutdown_actions();
641 os::wait_for_keypress_at_exit();
642 os::abort(dump_core);
643 ShouldNotReachHere();
644 }
645
646 void vm_notify_during_shutdown(const char* error, const char* message) {
647 if (error != NULL) {
648 tty->print_cr("Error occurred during initialization of VM");
649 tty->print("%s", error);
650 if (message != NULL) {
651 tty->print_cr(": %s", message);
652 }
653 else {
654 tty->cr();
655 }
656 }
657 if (ShowMessageBoxOnError && WizardMode) {
658 fatal("Error occurred during initialization of VM");
659 }
660 }
661
662 void vm_exit_during_initialization(Handle exception) {
663 tty->print_cr("Error occurred during initialization of VM");
664 // If there are exceptions on this thread it must be cleared
665 // first and here. Any future calls to EXCEPTION_MARK requires
666 // that no pending exceptions exist.
667 Thread *THREAD = Thread::current();
668 if (HAS_PENDING_EXCEPTION) {
669 CLEAR_PENDING_EXCEPTION;
670 }
671 java_lang_Throwable::print(exception, tty);
672 tty->cr();
673 java_lang_Throwable::print_stack_trace(exception(), tty);
674 tty->cr();
675 vm_notify_during_shutdown(NULL, NULL);
676
677 // Failure during initialization, we don't want to dump core
678 vm_abort(false);
679 }
680
681 void vm_exit_during_initialization(Symbol* ex, const char* message) {
682 ResourceMark rm;
683 vm_notify_during_shutdown(ex->as_C_string(), message);
684
685 // Failure during initialization, we don't want to dump core
686 vm_abort(false);
687 }
688
689 void vm_exit_during_initialization(const char* error, const char* message) {
690 vm_notify_during_shutdown(error, message);
691
692 // Failure during initialization, we don't want to dump core
693 vm_abort(false);
694 }
695
696 void vm_shutdown_during_initialization(const char* error, const char* message) {
697 vm_notify_during_shutdown(error, message);
698 vm_shutdown();
699 }
700
701 JDK_Version JDK_Version::_current;
702 const char* JDK_Version::_runtime_name;
703 const char* JDK_Version::_runtime_version;
704
705 void JDK_Version::initialize() {
706 jdk_version_info info;
707 assert(!_current.is_valid(), "Don't initialize twice");
708
709 void *lib_handle = os::native_java_library();
710 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t,
711 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
712
713 if (func == NULL) {
714 // JDK older than 1.6
715 _current._partially_initialized = true;
716 } else {
717 (*func)(&info, sizeof(info));
718
719 int major = JDK_VERSION_MAJOR(info.jdk_version);
720 int minor = JDK_VERSION_MINOR(info.jdk_version);
721 int micro = JDK_VERSION_MICRO(info.jdk_version);
722 int build = JDK_VERSION_BUILD(info.jdk_version);
723 if (major == 1 && minor > 4) {
724 // We represent "1.5.0" as "5.0", but 1.4.2 as itself.
725 major = minor;
726 minor = micro;
727 micro = 0;
728 }
729 _current = JDK_Version(major, minor, micro, info.update_version,
730 info.special_update_version, build,
731 info.thread_park_blocker == 1,
732 info.post_vm_init_hook_enabled == 1,
733 info.pending_list_uses_discovered_field == 1);
734 }
735 }
736
737 void JDK_Version::fully_initialize(
738 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) {
739 // This is only called when current is less than 1.6 and we've gotten
740 // far enough in the initialization to determine the exact version.
741 assert(major < 6, "not needed for JDK version >= 6");
742 assert(is_partially_initialized(), "must not initialize");
743 if (major < 5) {
744 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc.
745 micro = minor;
746 minor = major;
747 major = 1;
748 }
749 _current = JDK_Version(major, minor, micro, update);
750 }
751
752 void JDK_Version_init() {
753 JDK_Version::initialize();
754 }
755
756 static int64_t encode_jdk_version(const JDK_Version& v) {
757 return
758 ((int64_t)v.major_version() << (BitsPerByte * 5)) |
759 ((int64_t)v.minor_version() << (BitsPerByte * 4)) |
760 ((int64_t)v.micro_version() << (BitsPerByte * 3)) |
761 ((int64_t)v.update_version() << (BitsPerByte * 2)) |
762 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) |
763 ((int64_t)v.build_number() << (BitsPerByte * 0));
764 }
765
766 int JDK_Version::compare(const JDK_Version& other) const {
767 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)");
768 if (!is_partially_initialized() && other.is_partially_initialized()) {
769 return -(other.compare(*this)); // flip the comparators
770 }
771 assert(!other.is_partially_initialized(), "Not initialized yet");
772 if (is_partially_initialized()) {
773 assert(other.major_version() >= 6,
774 "Invalid JDK version comparison during initialization");
775 return -1;
776 } else {
777 uint64_t e = encode_jdk_version(*this);
778 uint64_t o = encode_jdk_version(other);
779 return (e > o) ? 1 : ((e == o) ? 0 : -1);
780 }
781 }
782
783 void JDK_Version::to_string(char* buffer, size_t buflen) const {
784 size_t index = 0;
785 if (!is_valid()) {
786 jio_snprintf(buffer, buflen, "%s", "(uninitialized)");
787 } else if (is_partially_initialized()) {
788 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0");
789 } else {
790 index += jio_snprintf(
791 &buffer[index], buflen - index, "%d.%d", _major, _minor);
792 if (_micro > 0) {
793 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro);
794 }
795 if (_update > 0) {
796 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update);
797 }
798 if (_special > 0) {
799 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special);
800 }
801 if (_build > 0) {
802 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build);
803 }
804 }
805 }