1 /*
2 * Copyright (c) 1997, 2014, 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/stringTable.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 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
101
102 GrowableArray<Method*>* collected_profiled_methods;
103
104 int compare_methods(Method** a, Method** b) {
105 // %%% there can be 32-bit overflow here
106 return ((*b)->invocation_count() + (*b)->compiled_invocation_count())
107 - ((*a)->invocation_count() + (*a)->compiled_invocation_count());
108 }
109
110 void collect_profiled_methods(Method* m) {
111 Thread* thread = Thread::current();
112 // This HandleMark prevents a huge amount of handles from being added
113 // to the metadata_handles() array on the thread.
114 HandleMark hm(thread);
115 methodHandle mh(thread, m);
116 if ((m->method_data() != NULL) &&
117 (PrintMethodData || CompilerOracle::should_print(mh))) {
118 collected_profiled_methods->push(m);
119 }
120 }
121
122 void print_method_profiling_data() {
123 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) {
124 ResourceMark rm;
125 HandleMark hm;
126 collected_profiled_methods = new GrowableArray<Method*>(1024);
127 ClassLoaderDataGraph::methods_do(collect_profiled_methods);
128 collected_profiled_methods->sort(&compare_methods);
129
130 int count = collected_profiled_methods->length();
131 int total_size = 0;
132 if (count > 0) {
133 for (int index = 0; index < count; index++) {
134 Method* m = collected_profiled_methods->at(index);
135 ttyLocker ttyl;
136 tty->print_cr("------------------------------------------------------------------------");
137 m->print_invocation_count();
138 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes());
139 tty->cr();
140 // Dump data on parameters if any
141 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) {
142 tty->fill_to(2);
143 m->method_data()->parameters_type_data()->print_data_on(tty);
144 }
145 m->print_codes();
146 total_size += m->method_data()->size_in_bytes();
147 }
148 tty->print_cr("------------------------------------------------------------------------");
149 tty->print_cr("Total MDO size: %d bytes", total_size);
150 }
151 }
152 }
153
154
155 #ifndef PRODUCT
156
157 // Statistics printing (method invocation histogram)
158
159 GrowableArray<Method*>* collected_invoked_methods;
160
161 void collect_invoked_methods(Method* m) {
162 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {
163 collected_invoked_methods->push(m);
164 }
165 }
166
167
168
169
170 void print_method_invocation_histogram() {
171 ResourceMark rm;
172 HandleMark hm;
173 collected_invoked_methods = new GrowableArray<Method*>(1024);
174 SystemDictionary::methods_do(collect_invoked_methods);
175 collected_invoked_methods->sort(&compare_methods);
176 //
177 tty->cr();
178 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff);
179 tty->cr();
180 tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
181 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,
182 synch_total = 0, nativ_total = 0, acces_total = 0;
183 for (int index = 0; index < collected_invoked_methods->length(); index++) {
184 Method* m = collected_invoked_methods->at(index);
185 int c = m->invocation_count() + m->compiled_invocation_count();
186 if (c >= MethodHistogramCutoff) m->print_invocation_count();
187 int_total += m->invocation_count();
188 comp_total += m->compiled_invocation_count();
189 if (m->is_final()) final_total += c;
190 if (m->is_static()) static_total += c;
191 if (m->is_synchronized()) synch_total += c;
192 if (m->is_native()) nativ_total += c;
193 if (m->is_accessor()) acces_total += c;
194 }
195 tty->cr();
196 total = int_total + comp_total;
197 tty->print_cr("Invocations summary:");
198 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total);
199 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total);
200 tty->print_cr("\t%9d (100%%) total", total);
201 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total);
202 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total);
203 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total);
204 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total);
205 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total);
206 tty->cr();
207 SharedRuntime::print_call_statistics(comp_total);
208 }
209
210 void print_bytecode_count() {
211 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
212 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
213 }
214 }
215
216 AllocStats alloc_stats;
217
218
219
220 // General statistics printing (profiling ...)
221 void print_statistics() {
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 || PrintPreciseRTMLockingStatistics) {
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
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 (PrintMethodFlushingStatistics) {
318 NMethodSweeper::print();
319 }
320
321 if (PrintCodeCache2) {
322 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
323 CodeCache::print_internals();
324 }
325
326 if (PrintClassStatistics) {
327 SystemDictionary::print_class_statistics();
328 }
329 if (PrintMethodStatistics) {
330 SystemDictionary::print_method_statistics();
331 }
332
333 if (PrintVtableStats) {
334 klassVtable::print_statistics();
335 klassItable::print_statistics();
336 }
337 if (VerifyOops) {
338 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());
339 }
340
341 print_bytecode_count();
342 if (PrintMallocStatistics) {
343 tty->print("allocation stats: ");
344 alloc_stats.print();
345 tty->cr();
346 }
347
348 if (PrintSystemDictionaryAtExit) {
349 SystemDictionary::print();
350 }
351
352 if (PrintBiasedLockingStatistics) {
353 BiasedLocking::print_counters();
354 }
355
356 #ifdef ENABLE_ZAP_DEAD_LOCALS
357 #ifdef COMPILER2
358 if (ZapDeadCompiledLocals) {
359 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count);
360 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count);
361 }
362 #endif // COMPILER2
363 #endif // ENABLE_ZAP_DEAD_LOCALS
364 // Native memory tracking data
365 if (PrintNMTStatistics) {
366 if (MemTracker::is_on()) {
367 BaselineTTYOutputer outputer(tty);
368 MemTracker::print_memory_usage(outputer, K, false);
369 } else {
370 tty->print_cr("%s", MemTracker::reason());
371 }
372 }
373 }
374
375 #else // PRODUCT MODE STATISTICS
376
377 void print_statistics() {
378
379 if (PrintMethodData) {
380 print_method_profiling_data();
381 }
382
383 if (CITime) {
384 CompileBroker::print_times();
385 }
386
387 if (PrintCodeCache) {
388 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
389 CodeCache::print();
390 }
391
392 if (PrintMethodFlushingStatistics) {
393 NMethodSweeper::print();
394 }
395
396 #ifdef COMPILER2
397 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {
398 OptoRuntime::print_named_counters();
399 }
400 #endif
401 if (PrintBiasedLockingStatistics) {
402 BiasedLocking::print_counters();
403 }
404
405 // Native memory tracking data
406 if (PrintNMTStatistics) {
407 if (MemTracker::is_on()) {
408 BaselineTTYOutputer outputer(tty);
409 MemTracker::print_memory_usage(outputer, K, false);
410 } else {
411 tty->print_cr("%s", MemTracker::reason());
412 }
413 }
414 }
415
416 #endif
417
418
419 // Helper class for registering on_exit calls through JVM_OnExit
420
421 extern "C" {
422 typedef void (*__exit_proc)(void);
423 }
424
425 class ExitProc : public CHeapObj<mtInternal> {
426 private:
427 __exit_proc _proc;
428 // void (*_proc)(void);
429 ExitProc* _next;
430 public:
431 // ExitProc(void (*proc)(void)) {
432 ExitProc(__exit_proc proc) {
433 _proc = proc;
434 _next = NULL;
435 }
436 void evaluate() { _proc(); }
437 ExitProc* next() const { return _next; }
438 void set_next(ExitProc* next) { _next = next; }
439 };
440
441
442 // Linked list of registered on_exit procedures
443
444 static ExitProc* exit_procs = NULL;
445
446
447 extern "C" {
448 void register_on_exit_function(void (*func)(void)) {
449 ExitProc *entry = new ExitProc(func);
450 // Classic vm does not throw an exception in case the allocation failed,
451 if (entry != NULL) {
452 entry->set_next(exit_procs);
453 exit_procs = entry;
454 }
455 }
456 }
457
458 // Note: before_exit() can be executed only once, if more than one threads
459 // are trying to shutdown the VM at the same time, only one thread
460 // can run before_exit() and all other threads must wait.
461 void before_exit(JavaThread * thread) {
462 #define BEFORE_EXIT_NOT_RUN 0
463 #define BEFORE_EXIT_RUNNING 1
464 #define BEFORE_EXIT_DONE 2
465 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
466
467 // Note: don't use a Mutex to guard the entire before_exit(), as
468 // JVMTI post_thread_end_event and post_vm_death_event will run native code.
469 // A CAS or OSMutex would work just fine but then we need to manipulate
470 // thread state for Safepoint. Here we use Monitor wait() and notify_all()
471 // for synchronization.
472 { MutexLocker ml(BeforeExit_lock);
473 switch (_before_exit_status) {
474 case BEFORE_EXIT_NOT_RUN:
475 _before_exit_status = BEFORE_EXIT_RUNNING;
476 break;
477 case BEFORE_EXIT_RUNNING:
478 while (_before_exit_status == BEFORE_EXIT_RUNNING) {
479 BeforeExit_lock->wait();
480 }
481 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
482 return;
483 case BEFORE_EXIT_DONE:
484 return;
485 }
486 }
487
488 // The only difference between this and Win32's _onexit procs is that
489 // this version is invoked before any threads get killed.
490 ExitProc* current = exit_procs;
491 while (current != NULL) {
492 ExitProc* next = current->next();
493 current->evaluate();
494 delete current;
495 current = next;
496 }
497
498 // Hang forever on exit if we're reporting an error.
499 if (ShowMessageBoxOnError && is_error_reported()) {
500 os::infinite_sleep();
501 }
502
503 // Terminate watcher thread - must before disenrolling any periodic task
504 if (PeriodicTask::num_tasks() > 0)
505 WatcherThread::stop();
506
507 // Print statistics gathered (profiling ...)
508 if (Arguments::has_profile()) {
509 FlatProfiler::disengage();
510 FlatProfiler::print(10);
511 }
512
513 // shut down the StatSampler task
514 StatSampler::disengage();
515 StatSampler::destroy();
516
517 // Stop concurrent GC threads
518 Universe::heap()->stop();
519
520 // Print GC/heap related information.
521 if (PrintGCDetails) {
522 Universe::print();
523 AdaptiveSizePolicyOutput(0);
524 if (Verbose) {
525 ClassLoaderDataGraph::dump_on(gclog_or_tty);
526 }
527 }
528
529 if (PrintBytecodeHistogram) {
530 BytecodeHistogram::print();
531 }
532
533 if (JvmtiExport::should_post_thread_life()) {
534 JvmtiExport::post_thread_end(thread);
535 }
536
537
538 EventThreadEnd event;
539 if (event.should_commit()) {
540 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
541 event.commit();
542 }
543
544 // Always call even when there are not JVMTI environments yet, since environments
545 // may be attached late and JVMTI must track phases of VM execution
546 JvmtiExport::post_vm_death();
547 Threads::shutdown_vm_agents();
548
549 // Terminate the signal thread
550 // Note: we don't wait until it actually dies.
551 os::terminate_signal_thread();
552
553 print_statistics();
554 Universe::heap()->print_tracing_info();
555
556 { MutexLocker ml(BeforeExit_lock);
557 _before_exit_status = BEFORE_EXIT_DONE;
558 BeforeExit_lock->notify_all();
559 }
560
561 // Shutdown NMT before exit. Otherwise,
562 // it will run into trouble when system destroys static variables.
563 MemTracker::shutdown(MemTracker::NMT_normal);
564
565 if (VerifyStringTableAtExit) {
566 int fail_cnt = 0;
567 {
568 MutexLocker ml(StringTable_lock);
569 fail_cnt = StringTable::verify_and_compare_entries();
570 }
571
572 if (fail_cnt != 0) {
573 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt);
574 guarantee(fail_cnt == 0, "unexpected StringTable verification failures");
575 }
576 }
577
578 #undef BEFORE_EXIT_NOT_RUN
579 #undef BEFORE_EXIT_RUNNING
580 #undef BEFORE_EXIT_DONE
581 }
582
583 void vm_exit(int code) {
584 Thread* thread = ThreadLocalStorage::is_initialized() ?
585 ThreadLocalStorage::get_thread_slow() : NULL;
586 if (thread == NULL) {
587 // we have serious problems -- just exit
588 vm_direct_exit(code);
589 }
590
591 if (VMThread::vm_thread() != NULL) {
592 // Fire off a VM_Exit operation to bring VM to a safepoint and exit
593 VM_Exit op(code);
594 if (thread->is_Java_thread())
595 ((JavaThread*)thread)->set_thread_state(_thread_in_vm);
596 VMThread::execute(&op);
597 // should never reach here; but in case something wrong with VM Thread.
598 vm_direct_exit(code);
599 } else {
600 // VM thread is gone, just exit
601 vm_direct_exit(code);
602 }
603 ShouldNotReachHere();
604 }
605
606 void notify_vm_shutdown() {
607 // For now, just a dtrace probe.
608 HOTSPOT_VM_SHUTDOWN();
609 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG();
610 }
611
612 void vm_direct_exit(int code) {
613 notify_vm_shutdown();
614 os::wait_for_keypress_at_exit();
615 ::exit(code);
616 }
617
618 void vm_perform_shutdown_actions() {
619 // Warning: do not call 'exit_globals()' here. All threads are still running.
620 // Calling 'exit_globals()' will disable thread-local-storage and cause all
621 // kinds of assertions to trigger in debug mode.
622 if (is_init_completed()) {
623 Thread* thread = ThreadLocalStorage::is_initialized() ?
624 ThreadLocalStorage::get_thread_slow() : NULL;
625 if (thread != NULL && thread->is_Java_thread()) {
626 // We are leaving the VM, set state to native (in case any OS exit
627 // handlers call back to the VM)
628 JavaThread* jt = (JavaThread*)thread;
629 // Must always be walkable or have no last_Java_frame when in
630 // thread_in_native
631 jt->frame_anchor()->make_walkable(jt);
632 jt->set_thread_state(_thread_in_native);
633 }
634 }
635 notify_vm_shutdown();
636 }
637
638 void vm_shutdown()
639 {
640 vm_perform_shutdown_actions();
641 os::wait_for_keypress_at_exit();
642 os::shutdown();
643 }
644
645 void vm_abort(bool dump_core) {
646 vm_perform_shutdown_actions();
647 os::wait_for_keypress_at_exit();
648 os::abort(dump_core);
649 ShouldNotReachHere();
650 }
651
652 void vm_notify_during_shutdown(const char* error, const char* message) {
653 if (error != NULL) {
654 tty->print_cr("Error occurred during initialization of VM");
655 tty->print("%s", error);
656 if (message != NULL) {
657 tty->print_cr(": %s", message);
658 }
659 else {
660 tty->cr();
661 }
662 }
663 if (ShowMessageBoxOnError && WizardMode) {
664 fatal("Error occurred during initialization of VM");
665 }
666 }
667
668 void vm_exit_during_initialization(Handle exception) {
669 tty->print_cr("Error occurred during initialization of VM");
670 // If there are exceptions on this thread it must be cleared
671 // first and here. Any future calls to EXCEPTION_MARK requires
672 // that no pending exceptions exist.
673 Thread *THREAD = Thread::current();
674 if (HAS_PENDING_EXCEPTION) {
675 CLEAR_PENDING_EXCEPTION;
676 }
677 java_lang_Throwable::print(exception, tty);
678 tty->cr();
679 java_lang_Throwable::print_stack_trace(exception(), tty);
680 tty->cr();
681 vm_notify_during_shutdown(NULL, NULL);
682
683 // Failure during initialization, we don't want to dump core
684 vm_abort(false);
685 }
686
687 void vm_exit_during_initialization(Symbol* ex, const char* message) {
688 ResourceMark rm;
689 vm_notify_during_shutdown(ex->as_C_string(), message);
690
691 // Failure during initialization, we don't want to dump core
692 vm_abort(false);
693 }
694
695 void vm_exit_during_initialization(const char* error, const char* message) {
696 vm_notify_during_shutdown(error, message);
697
698 // Failure during initialization, we don't want to dump core
699 vm_abort(false);
700 }
701
702 void vm_shutdown_during_initialization(const char* error, const char* message) {
703 vm_notify_during_shutdown(error, message);
704 vm_shutdown();
705 }
706
707 JDK_Version JDK_Version::_current;
708 const char* JDK_Version::_runtime_name;
709 const char* JDK_Version::_runtime_version;
710
711 void JDK_Version::initialize() {
712 jdk_version_info info;
713 assert(!_current.is_valid(), "Don't initialize twice");
714
715 void *lib_handle = os::native_java_library();
716 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t,
717 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
718
719 if (func == NULL) {
720 // JDK older than 1.6
721 _current._partially_initialized = true;
722 } else {
723 (*func)(&info, sizeof(info));
724
725 int major = JDK_VERSION_MAJOR(info.jdk_version);
726 int minor = JDK_VERSION_MINOR(info.jdk_version);
727 int micro = JDK_VERSION_MICRO(info.jdk_version);
728 int build = JDK_VERSION_BUILD(info.jdk_version);
729 if (major == 1 && minor > 4) {
730 // We represent "1.5.0" as "5.0", but 1.4.2 as itself.
731 major = minor;
732 minor = micro;
733 micro = 0;
734 }
735 _current = JDK_Version(major, minor, micro, info.update_version,
736 info.special_update_version, build,
737 info.thread_park_blocker == 1,
738 info.post_vm_init_hook_enabled == 1,
739 info.pending_list_uses_discovered_field == 1);
740 }
741 }
742
743 void JDK_Version::fully_initialize(
744 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) {
745 // This is only called when current is less than 1.6 and we've gotten
746 // far enough in the initialization to determine the exact version.
747 assert(major < 6, "not needed for JDK version >= 6");
748 assert(is_partially_initialized(), "must not initialize");
749 if (major < 5) {
750 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc.
751 micro = minor;
752 minor = major;
753 major = 1;
754 }
755 _current = JDK_Version(major, minor, micro, update);
756 }
757
758 void JDK_Version_init() {
759 JDK_Version::initialize();
760 }
761
762 static int64_t encode_jdk_version(const JDK_Version& v) {
763 return
764 ((int64_t)v.major_version() << (BitsPerByte * 5)) |
765 ((int64_t)v.minor_version() << (BitsPerByte * 4)) |
766 ((int64_t)v.micro_version() << (BitsPerByte * 3)) |
767 ((int64_t)v.update_version() << (BitsPerByte * 2)) |
768 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) |
769 ((int64_t)v.build_number() << (BitsPerByte * 0));
770 }
771
772 int JDK_Version::compare(const JDK_Version& other) const {
773 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)");
774 if (!is_partially_initialized() && other.is_partially_initialized()) {
775 return -(other.compare(*this)); // flip the comparators
776 }
777 assert(!other.is_partially_initialized(), "Not initialized yet");
778 if (is_partially_initialized()) {
779 assert(other.major_version() >= 6,
780 "Invalid JDK version comparison during initialization");
781 return -1;
782 } else {
783 uint64_t e = encode_jdk_version(*this);
784 uint64_t o = encode_jdk_version(other);
785 return (e > o) ? 1 : ((e == o) ? 0 : -1);
786 }
787 }
788
789 void JDK_Version::to_string(char* buffer, size_t buflen) const {
790 size_t index = 0;
791 if (!is_valid()) {
792 jio_snprintf(buffer, buflen, "%s", "(uninitialized)");
793 } else if (is_partially_initialized()) {
794 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0");
795 } else {
796 index += jio_snprintf(
797 &buffer[index], buflen - index, "%d.%d", _major, _minor);
798 if (_micro > 0) {
799 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro);
800 }
801 if (_update > 0) {
802 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update);
803 }
804 if (_special > 0) {
805 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special);
806 }
807 if (_build > 0) {
808 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build);
809 }
810 }
811 }