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src/share/vm/runtime/java.cpp@2be326848943
src/share/vm/runtime/java.cpp
Sat, 09 Nov 2019 20:29:45 +0800
- author
- aoqi
- date
- Sat, 09 Nov 2019 20:29:45 +0800
- changeset 9756
- 2be326848943
- parent 8604
- 04d83ba48607
- parent 9744
- b02fb6a07ed5
- child 9852
- 70aa912cebe5
- permissions
- -rw-r--r--
Merge
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 */
25 /*
26 * This file has been modified by Loongson Technology in 2015. These
27 * modifications are Copyright (c) 2015 Loongson Technology, and are made
28 * available on the same license terms set forth above.
29 */
31 #include "precompiled.hpp"
32 #include "classfile/classLoader.hpp"
33 #include "classfile/symbolTable.hpp"
34 #include "classfile/systemDictionary.hpp"
35 #include "code/codeCache.hpp"
36 #include "compiler/compileBroker.hpp"
37 #include "compiler/compilerOracle.hpp"
38 #include "interpreter/bytecodeHistogram.hpp"
39 #include "memory/genCollectedHeap.hpp"
40 #include "memory/oopFactory.hpp"
41 #include "memory/universe.hpp"
42 #include "oops/constantPool.hpp"
43 #include "oops/generateOopMap.hpp"
44 #include "oops/instanceKlass.hpp"
45 #include "oops/instanceOop.hpp"
46 #include "oops/method.hpp"
47 #include "oops/objArrayOop.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "oops/symbol.hpp"
50 #include "prims/jvmtiExport.hpp"
51 #include "runtime/arguments.hpp"
52 #include "runtime/biasedLocking.hpp"
53 #include "runtime/compilationPolicy.hpp"
54 #include "runtime/deoptimization.hpp"
55 #include "runtime/fprofiler.hpp"
56 #include "runtime/init.hpp"
57 #include "runtime/interfaceSupport.hpp"
58 #include "runtime/java.hpp"
59 #include "runtime/memprofiler.hpp"
60 #include "runtime/sharedRuntime.hpp"
61 #include "runtime/statSampler.hpp"
62 #include "runtime/sweeper.hpp"
63 #include "runtime/task.hpp"
64 #include "runtime/thread.inline.hpp"
65 #include "runtime/timer.hpp"
66 #include "runtime/vm_operations.hpp"
67 #include "services/memTracker.hpp"
68 #include "trace/tracing.hpp"
69 #include "utilities/dtrace.hpp"
70 #include "utilities/globalDefinitions.hpp"
71 #include "utilities/histogram.hpp"
72 #include "utilities/macros.hpp"
73 #include "utilities/vmError.hpp"
74 #ifdef TARGET_ARCH_x86
75 # include "vm_version_x86.hpp"
76 #endif
77 #ifdef TARGET_ARCH_sparc
78 # include "vm_version_sparc.hpp"
79 #endif
80 #ifdef TARGET_ARCH_zero
81 # include "vm_version_zero.hpp"
82 #endif
83 #ifdef TARGET_ARCH_arm
84 # include "vm_version_arm.hpp"
85 #endif
86 #ifdef TARGET_ARCH_ppc
87 # include "vm_version_ppc.hpp"
88 #endif
89 #ifdef TARGET_ARCH_mips
90 # include "vm_version_mips.hpp"
91 #endif
92 #if INCLUDE_ALL_GCS
93 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp"
94 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
95 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
96 #endif // INCLUDE_ALL_GCS
97 #ifdef COMPILER1
98 #include "c1/c1_Compiler.hpp"
99 #include "c1/c1_Runtime1.hpp"
100 #endif
101 #ifdef COMPILER2
102 #include "code/compiledIC.hpp"
103 #include "compiler/methodLiveness.hpp"
104 #include "opto/compile.hpp"
105 #include "opto/indexSet.hpp"
106 #include "opto/runtime.hpp"
107 #endif
109 #ifndef USDT2
110 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown);
111 #endif /* !USDT2 */
113 #ifndef PRODUCT
115 // Statistics printing (method invocation histogram)
117 GrowableArray<Method*>* collected_invoked_methods;
119 void collect_invoked_methods(Method* m) {
120 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {
121 collected_invoked_methods->push(m);
122 }
123 }
125 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
127 GrowableArray<Method*>* collected_profiled_methods;
129 void collect_profiled_methods(Method* m) {
130 Thread* thread = Thread::current();
131 // This HandleMark prevents a huge amount of handles from being added
132 // to the metadata_handles() array on the thread.
133 HandleMark hm(thread);
134 methodHandle mh(thread, m);
135 if ((m->method_data() != NULL) &&
136 (PrintMethodData || CompilerOracle::should_print(mh))) {
137 collected_profiled_methods->push(m);
138 }
139 }
142 int compare_methods(Method** a, Method** b) {
143 // %%% there can be 32-bit overflow here
144 return ((*b)->invocation_count() + (*b)->compiled_invocation_count())
145 - ((*a)->invocation_count() + (*a)->compiled_invocation_count());
146 }
149 void print_method_invocation_histogram() {
150 ResourceMark rm;
151 HandleMark hm;
152 collected_invoked_methods = new GrowableArray<Method*>(1024);
153 SystemDictionary::methods_do(collect_invoked_methods);
154 collected_invoked_methods->sort(&compare_methods);
155 //
156 tty->cr();
157 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff);
158 tty->cr();
159 tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
160 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,
161 synch_total = 0, nativ_total = 0, acces_total = 0;
162 for (int index = 0; index < collected_invoked_methods->length(); index++) {
163 Method* m = collected_invoked_methods->at(index);
164 int c = m->invocation_count() + m->compiled_invocation_count();
165 if (c >= MethodHistogramCutoff) m->print_invocation_count();
166 int_total += m->invocation_count();
167 comp_total += m->compiled_invocation_count();
168 if (m->is_final()) final_total += c;
169 if (m->is_static()) static_total += c;
170 if (m->is_synchronized()) synch_total += c;
171 if (m->is_native()) nativ_total += c;
172 if (m->is_accessor()) acces_total += c;
173 }
174 tty->cr();
175 total = int_total + comp_total;
176 tty->print_cr("Invocations summary:");
177 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total);
178 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total);
179 tty->print_cr("\t%9d (100%%) total", total);
180 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total);
181 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total);
182 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total);
183 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total);
184 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total);
185 tty->cr();
186 SharedRuntime::print_call_statistics(comp_total);
187 }
189 void print_method_profiling_data() {
190 ResourceMark rm;
191 HandleMark hm;
192 collected_profiled_methods = new GrowableArray<Method*>(1024);
193 SystemDictionary::methods_do(collect_profiled_methods);
194 collected_profiled_methods->sort(&compare_methods);
196 int count = collected_profiled_methods->length();
197 int total_size = 0;
198 if (count > 0) {
199 for (int index = 0; index < count; index++) {
200 Method* m = collected_profiled_methods->at(index);
201 ttyLocker ttyl;
202 tty->print_cr("------------------------------------------------------------------------");
203 //m->print_name(tty);
204 m->print_invocation_count();
205 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes());
206 tty->cr();
207 // Dump data on parameters if any
208 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) {
209 tty->fill_to(2);
210 m->method_data()->parameters_type_data()->print_data_on(tty);
211 }
212 m->print_codes();
213 total_size += m->method_data()->size_in_bytes();
214 }
215 tty->print_cr("------------------------------------------------------------------------");
216 tty->print_cr("Total MDO size: %d bytes", total_size);
217 }
218 }
220 void print_bytecode_count() {
221 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
222 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
223 }
224 }
226 AllocStats alloc_stats;
230 // General statistics printing (profiling ...)
231 void print_statistics() {
232 #ifdef ASSERT
234 if (CountRuntimeCalls) {
235 extern Histogram *RuntimeHistogram;
236 RuntimeHistogram->print();
237 }
239 if (CountJNICalls) {
240 extern Histogram *JNIHistogram;
241 JNIHistogram->print();
242 }
244 if (CountJVMCalls) {
245 extern Histogram *JVMHistogram;
246 JVMHistogram->print();
247 }
249 #endif
251 if (MemProfiling) {
252 MemProfiler::disengage();
253 }
255 if (CITime) {
256 CompileBroker::print_times();
257 }
259 #ifdef COMPILER1
260 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {
261 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);
262 Runtime1::print_statistics();
263 Deoptimization::print_statistics();
264 SharedRuntime::print_statistics();
265 nmethod::print_statistics();
266 }
267 #endif /* COMPILER1 */
269 #ifdef COMPILER2
270 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {
271 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);
272 Compile::print_statistics();
273 #ifndef COMPILER1
274 Deoptimization::print_statistics();
275 nmethod::print_statistics();
276 SharedRuntime::print_statistics();
277 #endif //COMPILER1
278 os::print_statistics();
279 }
281 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {
282 OptoRuntime::print_named_counters();
283 }
285 if (TimeLivenessAnalysis) {
286 MethodLiveness::print_times();
287 }
288 #ifdef ASSERT
289 if (CollectIndexSetStatistics) {
290 IndexSet::print_statistics();
291 }
292 #endif // ASSERT
293 #endif // COMPILER2
294 if (CountCompiledCalls) {
295 print_method_invocation_histogram();
296 }
297 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) {
298 print_method_profiling_data();
299 }
300 if (TimeCompiler) {
301 COMPILER2_PRESENT(Compile::print_timers();)
302 }
303 if (TimeCompilationPolicy) {
304 CompilationPolicy::policy()->print_time();
305 }
306 if (TimeOopMap) {
307 GenerateOopMap::print_time();
308 }
309 if (ProfilerCheckIntervals) {
310 PeriodicTask::print_intervals();
311 }
312 if (PrintSymbolTableSizeHistogram) {
313 SymbolTable::print_histogram();
314 }
315 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
316 BytecodeCounter::print();
317 }
318 if (PrintBytecodePairHistogram) {
319 BytecodePairHistogram::print();
320 }
322 if (PrintCodeCache) {
323 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
324 CodeCache::print();
325 }
327 if (PrintMethodFlushingStatistics) {
328 NMethodSweeper::print();
329 }
331 if (PrintCodeCache2) {
332 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
333 CodeCache::print_internals();
334 }
336 if (PrintClassStatistics) {
337 SystemDictionary::print_class_statistics();
338 }
339 if (PrintMethodStatistics) {
340 SystemDictionary::print_method_statistics();
341 }
343 if (PrintVtableStats) {
344 klassVtable::print_statistics();
345 klassItable::print_statistics();
346 }
347 if (VerifyOops) {
348 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());
349 }
351 print_bytecode_count();
352 if (PrintMallocStatistics) {
353 tty->print("allocation stats: ");
354 alloc_stats.print();
355 tty->cr();
356 }
358 if (PrintSystemDictionaryAtExit) {
359 SystemDictionary::print();
360 }
362 if (PrintBiasedLockingStatistics) {
363 BiasedLocking::print_counters();
364 }
366 #ifdef ENABLE_ZAP_DEAD_LOCALS
367 #ifdef COMPILER2
368 if (ZapDeadCompiledLocals) {
369 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count);
370 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count);
371 }
372 #endif // COMPILER2
373 #endif // ENABLE_ZAP_DEAD_LOCALS
374 // Native memory tracking data
375 if (PrintNMTStatistics) {
376 MemTracker::final_report(tty);
377 }
378 }
380 #else // PRODUCT MODE STATISTICS
382 void print_statistics() {
384 if (CITime) {
385 CompileBroker::print_times();
386 }
388 if (PrintCodeCache) {
389 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
390 CodeCache::print();
391 }
393 if (PrintMethodFlushingStatistics) {
394 NMethodSweeper::print();
395 }
397 #ifdef COMPILER2
398 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {
399 OptoRuntime::print_named_counters();
400 }
401 #endif
402 if (PrintBiasedLockingStatistics) {
403 BiasedLocking::print_counters();
404 }
406 // Native memory tracking data
407 if (PrintNMTStatistics) {
408 MemTracker::final_report(tty);
409 }
410 }
412 #endif
415 // Helper class for registering on_exit calls through JVM_OnExit
417 extern "C" {
418 typedef void (*__exit_proc)(void);
419 }
421 class ExitProc : public CHeapObj<mtInternal> {
422 private:
423 __exit_proc _proc;
424 // void (*_proc)(void);
425 ExitProc* _next;
426 public:
427 // ExitProc(void (*proc)(void)) {
428 ExitProc(__exit_proc proc) {
429 _proc = proc;
430 _next = NULL;
431 }
432 void evaluate() { _proc(); }
433 ExitProc* next() const { return _next; }
434 void set_next(ExitProc* next) { _next = next; }
435 };
438 // Linked list of registered on_exit procedures
440 static ExitProc* exit_procs = NULL;
443 extern "C" {
444 void register_on_exit_function(void (*func)(void)) {
445 ExitProc *entry = new ExitProc(func);
446 // Classic vm does not throw an exception in case the allocation failed,
447 if (entry != NULL) {
448 entry->set_next(exit_procs);
449 exit_procs = entry;
450 }
451 }
452 }
454 // Note: before_exit() can be executed only once, if more than one threads
455 // are trying to shutdown the VM at the same time, only one thread
456 // can run before_exit() and all other threads must wait.
457 void before_exit(JavaThread * thread) {
458 #define BEFORE_EXIT_NOT_RUN 0
459 #define BEFORE_EXIT_RUNNING 1
460 #define BEFORE_EXIT_DONE 2
461 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
463 // Note: don't use a Mutex to guard the entire before_exit(), as
464 // JVMTI post_thread_end_event and post_vm_death_event will run native code.
465 // A CAS or OSMutex would work just fine but then we need to manipulate
466 // thread state for Safepoint. Here we use Monitor wait() and notify_all()
467 // for synchronization.
468 { MutexLocker ml(BeforeExit_lock);
469 switch (_before_exit_status) {
470 case BEFORE_EXIT_NOT_RUN:
471 _before_exit_status = BEFORE_EXIT_RUNNING;
472 break;
473 case BEFORE_EXIT_RUNNING:
474 while (_before_exit_status == BEFORE_EXIT_RUNNING) {
475 BeforeExit_lock->wait();
476 }
477 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
478 return;
479 case BEFORE_EXIT_DONE:
480 return;
481 }
482 }
484 // The only difference between this and Win32's _onexit procs is that
485 // this version is invoked before any threads get killed.
486 ExitProc* current = exit_procs;
487 while (current != NULL) {
488 ExitProc* next = current->next();
489 current->evaluate();
490 delete current;
491 current = next;
492 }
494 // Hang forever on exit if we're reporting an error.
495 if (ShowMessageBoxOnError && is_error_reported()) {
496 os::infinite_sleep();
497 }
499 // Terminate watcher thread - must before disenrolling any periodic task
500 if (PeriodicTask::num_tasks() > 0)
501 WatcherThread::stop();
503 // Print statistics gathered (profiling ...)
504 if (Arguments::has_profile()) {
505 FlatProfiler::disengage();
506 FlatProfiler::print(10);
507 }
509 // shut down the StatSampler task
510 StatSampler::disengage();
511 StatSampler::destroy();
513 // Stop concurrent GC threads
514 Universe::heap()->stop();
516 // Print GC/heap related information.
517 if (PrintGCDetails) {
518 Universe::print();
519 AdaptiveSizePolicyOutput(0);
520 if (Verbose) {
521 ClassLoaderDataGraph::dump_on(gclog_or_tty);
522 }
523 }
525 if (PrintBytecodeHistogram) {
526 BytecodeHistogram::print();
527 }
529 if (JvmtiExport::should_post_thread_life()) {
530 JvmtiExport::post_thread_end(thread);
531 }
534 EventThreadEnd event;
535 if (event.should_commit()) {
536 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
537 event.commit();
538 }
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();
545 // Terminate the signal thread
546 // Note: we don't wait until it actually dies.
547 os::terminate_signal_thread();
549 print_statistics();
550 Universe::heap()->print_tracing_info();
552 { MutexLocker ml(BeforeExit_lock);
553 _before_exit_status = BEFORE_EXIT_DONE;
554 BeforeExit_lock->notify_all();
555 }
557 if (VerifyStringTableAtExit) {
558 int fail_cnt = 0;
559 {
560 MutexLocker ml(StringTable_lock);
561 fail_cnt = StringTable::verify_and_compare_entries();
562 }
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 }
570 #undef BEFORE_EXIT_NOT_RUN
571 #undef BEFORE_EXIT_RUNNING
572 #undef BEFORE_EXIT_DONE
573 }
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 }
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 }
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 }
608 void vm_direct_exit(int code) {
609 notify_vm_shutdown();
610 os::wait_for_keypress_at_exit();
611 ::exit(code);
612 }
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 }
634 void vm_shutdown()
635 {
636 vm_perform_shutdown_actions();
637 os::wait_for_keypress_at_exit();
638 os::shutdown();
639 }
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 }
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 }
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);
679 // Failure during initialization, we don't want to dump core
680 vm_abort(false);
681 }
683 void vm_exit_during_initialization(Symbol* ex, const char* message) {
684 ResourceMark rm;
685 vm_notify_during_shutdown(ex->as_C_string(), message);
687 // Failure during initialization, we don't want to dump core
688 vm_abort(false);
689 }
691 void vm_exit_during_initialization(const char* error, const char* message) {
692 vm_notify_during_shutdown(error, message);
694 // Failure during initialization, we don't want to dump core
695 vm_abort(false);
696 }
698 void vm_shutdown_during_initialization(const char* error, const char* message) {
699 vm_notify_during_shutdown(error, message);
700 vm_shutdown();
701 }
703 JDK_Version JDK_Version::_current;
704 const char* JDK_Version::_runtime_name;
705 const char* JDK_Version::_runtime_version;
707 void JDK_Version::initialize() {
708 jdk_version_info info;
709 assert(!_current.is_valid(), "Don't initialize twice");
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"));
715 if (func == NULL) {
716 // JDK older than 1.6
717 _current._partially_initialized = true;
718 } else {
719 (*func)(&info, sizeof(info));
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 }
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 }
754 void JDK_Version_init() {
755 JDK_Version::initialize();
756 }
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 }
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 }
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 }
