Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/runtime/java.cpp@fb19af007ffc
src/share/vm/runtime/java.cpp
Wed, 10 Oct 2012 14:35:58 -0400
- author
- jprovino
- date
- Wed, 10 Oct 2012 14:35:58 -0400
- changeset 4165
- fb19af007ffc
- parent 4081
- 9a86ddfc6c8f
- child 4232
- a1b8cf9cf970
- permissions
- -rw-r--r--
7189254: Change makefiles for more flexibility to override defaults
Summary: Change makefiles so that targets and parameters can be overridden by alternate makefiles.
Reviewed-by: dholmes, coleenp
1 /*
2 * Copyright (c) 1997, 2012, 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 #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/aprofiler.hpp"
46 #include "runtime/arguments.hpp"
47 #include "runtime/biasedLocking.hpp"
48 #include "runtime/compilationPolicy.hpp"
49 #include "runtime/fprofiler.hpp"
50 #include "runtime/init.hpp"
51 #include "runtime/interfaceSupport.hpp"
52 #include "runtime/java.hpp"
53 #include "runtime/memprofiler.hpp"
54 #include "runtime/sharedRuntime.hpp"
55 #include "runtime/statSampler.hpp"
56 #include "runtime/task.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 "trace/traceEventTypes.hpp"
63 #include "utilities/dtrace.hpp"
64 #include "utilities/globalDefinitions.hpp"
65 #include "utilities/histogram.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 #ifdef TARGET_OS_FAMILY_linux
83 # include "thread_linux.inline.hpp"
84 #endif
85 #ifdef TARGET_OS_FAMILY_solaris
86 # include "thread_solaris.inline.hpp"
87 #endif
88 #ifdef TARGET_OS_FAMILY_windows
89 # include "thread_windows.inline.hpp"
90 #endif
91 #ifdef TARGET_OS_FAMILY_bsd
92 # include "thread_bsd.inline.hpp"
93 #endif
94 #ifndef SERIALGC
95 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp"
96 #include "gc_implementation/parallelScavenge/psScavenge.hpp"
97 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
98 #endif
99 #ifdef COMPILER1
100 #include "c1/c1_Compiler.hpp"
101 #include "c1/c1_Runtime1.hpp"
102 #endif
103 #ifdef COMPILER2
104 #include "code/compiledIC.hpp"
105 #include "compiler/methodLiveness.hpp"
106 #include "opto/compile.hpp"
107 #include "opto/indexSet.hpp"
108 #include "opto/runtime.hpp"
109 #endif
111 #ifndef USDT2
112 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown);
113 #endif /* !USDT2 */
115 #ifndef PRODUCT
117 // Statistics printing (method invocation histogram)
119 GrowableArray<Method*>* collected_invoked_methods;
121 void collect_invoked_methods(Method* m) {
122 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {
123 collected_invoked_methods->push(m);
124 }
125 }
128 GrowableArray<Method*>* collected_profiled_methods;
130 void collect_profiled_methods(Method* m) {
131 Thread* thread = Thread::current();
132 // This HandleMark prevents a huge amount of handles from being added
133 // to the metadata_handles() array on the thread.
134 HandleMark hm(thread);
135 methodHandle mh(thread, m);
136 if ((m->method_data() != NULL) &&
137 (PrintMethodData || CompilerOracle::should_print(mh))) {
138 collected_profiled_methods->push(m);
139 }
140 }
143 int compare_methods(Method** a, Method** b) {
144 // %%% there can be 32-bit overflow here
145 return ((*b)->invocation_count() + (*b)->compiled_invocation_count())
146 - ((*a)->invocation_count() + (*a)->compiled_invocation_count());
147 }
150 void print_method_invocation_histogram() {
151 ResourceMark rm;
152 HandleMark hm;
153 collected_invoked_methods = new GrowableArray<Method*>(1024);
154 SystemDictionary::methods_do(collect_invoked_methods);
155 collected_invoked_methods->sort(&compare_methods);
156 //
157 tty->cr();
158 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff);
159 tty->cr();
160 tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
161 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,
162 synch_total = 0, nativ_total = 0, acces_total = 0;
163 for (int index = 0; index < collected_invoked_methods->length(); index++) {
164 Method* m = collected_invoked_methods->at(index);
165 int c = m->invocation_count() + m->compiled_invocation_count();
166 if (c >= MethodHistogramCutoff) m->print_invocation_count();
167 int_total += m->invocation_count();
168 comp_total += m->compiled_invocation_count();
169 if (m->is_final()) final_total += c;
170 if (m->is_static()) static_total += c;
171 if (m->is_synchronized()) synch_total += c;
172 if (m->is_native()) nativ_total += c;
173 if (m->is_accessor()) acces_total += c;
174 }
175 tty->cr();
176 total = int_total + comp_total;
177 tty->print_cr("Invocations summary:");
178 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total);
179 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total);
180 tty->print_cr("\t%9d (100%%) total", total);
181 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total);
182 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total);
183 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total);
184 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total);
185 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total);
186 tty->cr();
187 SharedRuntime::print_call_statistics(comp_total);
188 }
190 void print_method_profiling_data() {
191 ResourceMark rm;
192 HandleMark hm;
193 collected_profiled_methods = new GrowableArray<Method*>(1024);
194 SystemDictionary::methods_do(collect_profiled_methods);
195 collected_profiled_methods->sort(&compare_methods);
197 int count = collected_profiled_methods->length();
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->cr();
206 m->print_codes();
207 }
208 tty->print_cr("------------------------------------------------------------------------");
209 }
210 }
212 void print_bytecode_count() {
213 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
214 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
215 }
216 }
218 AllocStats alloc_stats;
222 // General statistics printing (profiling ...)
224 void print_statistics() {
226 #ifdef ASSERT
228 if (CountRuntimeCalls) {
229 extern Histogram *RuntimeHistogram;
230 RuntimeHistogram->print();
231 }
233 if (CountJNICalls) {
234 extern Histogram *JNIHistogram;
235 JNIHistogram->print();
236 }
238 if (CountJVMCalls) {
239 extern Histogram *JVMHistogram;
240 JVMHistogram->print();
241 }
243 #endif
245 if (MemProfiling) {
246 MemProfiler::disengage();
247 }
249 if (CITime) {
250 CompileBroker::print_times();
251 }
253 #ifdef COMPILER1
254 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {
255 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);
256 Runtime1::print_statistics();
257 Deoptimization::print_statistics();
258 SharedRuntime::print_statistics();
259 nmethod::print_statistics();
260 }
261 #endif /* COMPILER1 */
263 #ifdef COMPILER2
264 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {
265 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);
266 Compile::print_statistics();
267 #ifndef COMPILER1
268 Deoptimization::print_statistics();
269 nmethod::print_statistics();
270 SharedRuntime::print_statistics();
271 #endif //COMPILER1
272 os::print_statistics();
273 }
275 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics) {
276 OptoRuntime::print_named_counters();
277 }
279 if (TimeLivenessAnalysis) {
280 MethodLiveness::print_times();
281 }
282 #ifdef ASSERT
283 if (CollectIndexSetStatistics) {
284 IndexSet::print_statistics();
285 }
286 #endif // ASSERT
287 #endif // COMPILER2
288 if (CountCompiledCalls) {
289 print_method_invocation_histogram();
290 }
291 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) {
292 print_method_profiling_data();
293 }
294 if (TimeCompiler) {
295 COMPILER2_PRESENT(Compile::print_timers();)
296 }
297 if (TimeCompilationPolicy) {
298 CompilationPolicy::policy()->print_time();
299 }
300 if (TimeOopMap) {
301 GenerateOopMap::print_time();
302 }
303 if (ProfilerCheckIntervals) {
304 PeriodicTask::print_intervals();
305 }
306 if (PrintSymbolTableSizeHistogram) {
307 SymbolTable::print_histogram();
308 }
309 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
310 BytecodeCounter::print();
311 }
312 if (PrintBytecodePairHistogram) {
313 BytecodePairHistogram::print();
314 }
316 if (PrintCodeCache) {
317 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
318 CodeCache::print();
319 }
321 if (PrintCodeCache2) {
322 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
323 CodeCache::print_internals();
324 }
326 if (PrintClassStatistics) {
327 SystemDictionary::print_class_statistics();
328 }
329 if (PrintMethodStatistics) {
330 SystemDictionary::print_method_statistics();
331 }
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 }
341 print_bytecode_count();
342 if (PrintMallocStatistics) {
343 tty->print("allocation stats: ");
344 alloc_stats.print();
345 tty->cr();
346 }
348 if (PrintSystemDictionaryAtExit) {
349 SystemDictionary::print();
350 }
352 if (PrintBiasedLockingStatistics) {
353 BiasedLocking::print_counters();
354 }
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(MemTracker::reason());
371 }
372 }
373 }
375 #else // PRODUCT MODE STATISTICS
377 void print_statistics() {
379 if (CITime) {
380 CompileBroker::print_times();
381 }
382 #ifdef COMPILER2
383 if (PrintPreciseBiasedLockingStatistics) {
384 OptoRuntime::print_named_counters();
385 }
386 #endif
387 if (PrintBiasedLockingStatistics) {
388 BiasedLocking::print_counters();
389 }
391 // Native memory tracking data
392 if (PrintNMTStatistics) {
393 if (MemTracker::is_on()) {
394 BaselineTTYOutputer outputer(tty);
395 MemTracker::print_memory_usage(outputer, K, false);
396 } else {
397 tty->print_cr(MemTracker::reason());
398 }
399 }
400 }
402 #endif
405 // Helper class for registering on_exit calls through JVM_OnExit
407 extern "C" {
408 typedef void (*__exit_proc)(void);
409 }
411 class ExitProc : public CHeapObj<mtInternal> {
412 private:
413 __exit_proc _proc;
414 // void (*_proc)(void);
415 ExitProc* _next;
416 public:
417 // ExitProc(void (*proc)(void)) {
418 ExitProc(__exit_proc proc) {
419 _proc = proc;
420 _next = NULL;
421 }
422 void evaluate() { _proc(); }
423 ExitProc* next() const { return _next; }
424 void set_next(ExitProc* next) { _next = next; }
425 };
428 // Linked list of registered on_exit procedures
430 static ExitProc* exit_procs = NULL;
433 extern "C" {
434 void register_on_exit_function(void (*func)(void)) {
435 ExitProc *entry = new ExitProc(func);
436 // Classic vm does not throw an exception in case the allocation failed,
437 if (entry != NULL) {
438 entry->set_next(exit_procs);
439 exit_procs = entry;
440 }
441 }
442 }
444 // Note: before_exit() can be executed only once, if more than one threads
445 // are trying to shutdown the VM at the same time, only one thread
446 // can run before_exit() and all other threads must wait.
447 void before_exit(JavaThread * thread) {
448 #define BEFORE_EXIT_NOT_RUN 0
449 #define BEFORE_EXIT_RUNNING 1
450 #define BEFORE_EXIT_DONE 2
451 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
453 // Note: don't use a Mutex to guard the entire before_exit(), as
454 // JVMTI post_thread_end_event and post_vm_death_event will run native code.
455 // A CAS or OSMutex would work just fine but then we need to manipulate
456 // thread state for Safepoint. Here we use Monitor wait() and notify_all()
457 // for synchronization.
458 { MutexLocker ml(BeforeExit_lock);
459 switch (_before_exit_status) {
460 case BEFORE_EXIT_NOT_RUN:
461 _before_exit_status = BEFORE_EXIT_RUNNING;
462 break;
463 case BEFORE_EXIT_RUNNING:
464 while (_before_exit_status == BEFORE_EXIT_RUNNING) {
465 BeforeExit_lock->wait();
466 }
467 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
468 return;
469 case BEFORE_EXIT_DONE:
470 return;
471 }
472 }
474 // The only difference between this and Win32's _onexit procs is that
475 // this version is invoked before any threads get killed.
476 ExitProc* current = exit_procs;
477 while (current != NULL) {
478 ExitProc* next = current->next();
479 current->evaluate();
480 delete current;
481 current = next;
482 }
484 // Hang forever on exit if we're reporting an error.
485 if (ShowMessageBoxOnError && is_error_reported()) {
486 os::infinite_sleep();
487 }
489 // Terminate watcher thread - must before disenrolling any periodic task
490 if (PeriodicTask::num_tasks() > 0)
491 WatcherThread::stop();
493 // Print statistics gathered (profiling ...)
494 if (Arguments::has_profile()) {
495 FlatProfiler::disengage();
496 FlatProfiler::print(10);
497 }
499 // shut down the StatSampler task
500 StatSampler::disengage();
501 StatSampler::destroy();
503 // We do not need to explicitly stop concurrent GC threads because the
504 // JVM will be taken down at a safepoint when such threads are inactive --
505 // except for some concurrent G1 threads, see (comment in)
506 // Threads::destroy_vm().
508 // Print GC/heap related information.
509 if (PrintGCDetails) {
510 Universe::print();
511 AdaptiveSizePolicyOutput(0);
512 if (Verbose) {
513 ClassLoaderDataGraph::dump_on(gclog_or_tty);
514 }
515 }
518 if (Arguments::has_alloc_profile()) {
519 HandleMark hm;
520 // Do one last collection to enumerate all the objects
521 // allocated since the last one.
522 Universe::heap()->collect(GCCause::_allocation_profiler);
523 AllocationProfiler::disengage();
524 AllocationProfiler::print(0);
525 }
527 if (PrintBytecodeHistogram) {
528 BytecodeHistogram::print();
529 }
531 if (JvmtiExport::should_post_thread_life()) {
532 JvmtiExport::post_thread_end(thread);
533 }
535 EVENT_BEGIN(TraceEventThreadEnd, event);
536 EVENT_COMMIT(event,
537 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
539 // Always call even when there are not JVMTI environments yet, since environments
540 // may be attached late and JVMTI must track phases of VM execution
541 JvmtiExport::post_vm_death();
542 Threads::shutdown_vm_agents();
544 // Terminate the signal thread
545 // Note: we don't wait until it actually dies.
546 os::terminate_signal_thread();
548 print_statistics();
549 Universe::heap()->print_tracing_info();
551 { MutexLocker ml(BeforeExit_lock);
552 _before_exit_status = BEFORE_EXIT_DONE;
553 BeforeExit_lock->notify_all();
554 }
556 #undef BEFORE_EXIT_NOT_RUN
557 #undef BEFORE_EXIT_RUNNING
558 #undef BEFORE_EXIT_DONE
559 }
561 void vm_exit(int code) {
562 Thread* thread = ThreadLocalStorage::is_initialized() ?
563 ThreadLocalStorage::get_thread_slow() : NULL;
564 if (thread == NULL) {
565 // we have serious problems -- just exit
566 vm_direct_exit(code);
567 }
569 if (VMThread::vm_thread() != NULL) {
570 // Fire off a VM_Exit operation to bring VM to a safepoint and exit
571 VM_Exit op(code);
572 if (thread->is_Java_thread())
573 ((JavaThread*)thread)->set_thread_state(_thread_in_vm);
574 VMThread::execute(&op);
575 // should never reach here; but in case something wrong with VM Thread.
576 vm_direct_exit(code);
577 } else {
578 // VM thread is gone, just exit
579 vm_direct_exit(code);
580 }
581 ShouldNotReachHere();
582 }
584 void notify_vm_shutdown() {
585 // For now, just a dtrace probe.
586 #ifndef USDT2
587 HS_DTRACE_PROBE(hotspot, vm__shutdown);
588 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG();
589 #else /* USDT2 */
590 HOTSPOT_VM_SHUTDOWN();
591 #endif /* USDT2 */
592 }
594 void vm_direct_exit(int code) {
595 notify_vm_shutdown();
596 os::wait_for_keypress_at_exit();
597 ::exit(code);
598 }
600 void vm_perform_shutdown_actions() {
601 // Warning: do not call 'exit_globals()' here. All threads are still running.
602 // Calling 'exit_globals()' will disable thread-local-storage and cause all
603 // kinds of assertions to trigger in debug mode.
604 if (is_init_completed()) {
605 Thread* thread = ThreadLocalStorage::is_initialized() ?
606 ThreadLocalStorage::get_thread_slow() : NULL;
607 if (thread != NULL && thread->is_Java_thread()) {
608 // We are leaving the VM, set state to native (in case any OS exit
609 // handlers call back to the VM)
610 JavaThread* jt = (JavaThread*)thread;
611 // Must always be walkable or have no last_Java_frame when in
612 // thread_in_native
613 jt->frame_anchor()->make_walkable(jt);
614 jt->set_thread_state(_thread_in_native);
615 }
616 }
617 notify_vm_shutdown();
618 }
620 void vm_shutdown()
621 {
622 vm_perform_shutdown_actions();
623 os::wait_for_keypress_at_exit();
624 os::shutdown();
625 }
627 void vm_abort(bool dump_core) {
628 vm_perform_shutdown_actions();
629 os::wait_for_keypress_at_exit();
630 os::abort(dump_core);
631 ShouldNotReachHere();
632 }
634 void vm_notify_during_shutdown(const char* error, const char* message) {
635 if (error != NULL) {
636 tty->print_cr("Error occurred during initialization of VM");
637 tty->print("%s", error);
638 if (message != NULL) {
639 tty->print_cr(": %s", message);
640 }
641 else {
642 tty->cr();
643 }
644 }
645 if (ShowMessageBoxOnError && WizardMode) {
646 fatal("Error occurred during initialization of VM");
647 }
648 }
650 void vm_exit_during_initialization(Handle exception) {
651 tty->print_cr("Error occurred during initialization of VM");
652 // If there are exceptions on this thread it must be cleared
653 // first and here. Any future calls to EXCEPTION_MARK requires
654 // that no pending exceptions exist.
655 Thread *THREAD = Thread::current();
656 if (HAS_PENDING_EXCEPTION) {
657 CLEAR_PENDING_EXCEPTION;
658 }
659 java_lang_Throwable::print(exception, tty);
660 tty->cr();
661 java_lang_Throwable::print_stack_trace(exception(), tty);
662 tty->cr();
663 vm_notify_during_shutdown(NULL, NULL);
665 // Failure during initialization, we don't want to dump core
666 vm_abort(false);
667 }
669 void vm_exit_during_initialization(Symbol* ex, const char* message) {
670 ResourceMark rm;
671 vm_notify_during_shutdown(ex->as_C_string(), message);
673 // Failure during initialization, we don't want to dump core
674 vm_abort(false);
675 }
677 void vm_exit_during_initialization(const char* error, const char* message) {
678 vm_notify_during_shutdown(error, message);
680 // Failure during initialization, we don't want to dump core
681 vm_abort(false);
682 }
684 void vm_shutdown_during_initialization(const char* error, const char* message) {
685 vm_notify_during_shutdown(error, message);
686 vm_shutdown();
687 }
689 JDK_Version JDK_Version::_current;
690 const char* JDK_Version::_runtime_name;
692 void JDK_Version::initialize() {
693 jdk_version_info info;
694 assert(!_current.is_valid(), "Don't initialize twice");
696 void *lib_handle = os::native_java_library();
697 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t,
698 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
700 if (func == NULL) {
701 // JDK older than 1.6
702 _current._partially_initialized = true;
703 } else {
704 (*func)(&info, sizeof(info));
706 int major = JDK_VERSION_MAJOR(info.jdk_version);
707 int minor = JDK_VERSION_MINOR(info.jdk_version);
708 int micro = JDK_VERSION_MICRO(info.jdk_version);
709 int build = JDK_VERSION_BUILD(info.jdk_version);
710 if (major == 1 && minor > 4) {
711 // We represent "1.5.0" as "5.0", but 1.4.2 as itself.
712 major = minor;
713 minor = micro;
714 micro = 0;
715 }
716 _current = JDK_Version(major, minor, micro, info.update_version,
717 info.special_update_version, build,
718 info.thread_park_blocker == 1,
719 info.post_vm_init_hook_enabled == 1,
720 info.pending_list_uses_discovered_field == 1);
721 }
722 }
724 void JDK_Version::fully_initialize(
725 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) {
726 // This is only called when current is less than 1.6 and we've gotten
727 // far enough in the initialization to determine the exact version.
728 assert(major < 6, "not needed for JDK version >= 6");
729 assert(is_partially_initialized(), "must not initialize");
730 if (major < 5) {
731 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc.
732 micro = minor;
733 minor = major;
734 major = 1;
735 }
736 _current = JDK_Version(major, minor, micro, update);
737 }
739 void JDK_Version_init() {
740 JDK_Version::initialize();
741 }
743 static int64_t encode_jdk_version(const JDK_Version& v) {
744 return
745 ((int64_t)v.major_version() << (BitsPerByte * 5)) |
746 ((int64_t)v.minor_version() << (BitsPerByte * 4)) |
747 ((int64_t)v.micro_version() << (BitsPerByte * 3)) |
748 ((int64_t)v.update_version() << (BitsPerByte * 2)) |
749 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) |
750 ((int64_t)v.build_number() << (BitsPerByte * 0));
751 }
753 int JDK_Version::compare(const JDK_Version& other) const {
754 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)");
755 if (!is_partially_initialized() && other.is_partially_initialized()) {
756 return -(other.compare(*this)); // flip the comparators
757 }
758 assert(!other.is_partially_initialized(), "Not initialized yet");
759 if (is_partially_initialized()) {
760 assert(other.major_version() >= 6,
761 "Invalid JDK version comparison during initialization");
762 return -1;
763 } else {
764 uint64_t e = encode_jdk_version(*this);
765 uint64_t o = encode_jdk_version(other);
766 return (e > o) ? 1 : ((e == o) ? 0 : -1);
767 }
768 }
770 void JDK_Version::to_string(char* buffer, size_t buflen) const {
771 size_t index = 0;
772 if (!is_valid()) {
773 jio_snprintf(buffer, buflen, "%s", "(uninitialized)");
774 } else if (is_partially_initialized()) {
775 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0");
776 } else {
777 index += jio_snprintf(
778 &buffer[index], buflen - index, "%d.%d", _major, _minor);
779 if (_micro > 0) {
780 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro);
781 }
782 if (_update > 0) {
783 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update);
784 }
785 if (_special > 0) {
786 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special);
787 }
788 if (_build > 0) {
789 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build);
790 }
791 }
792 }
