1/*
2 * Copyright (c) 1997, 2019, 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 "jvm.h"
27#include "aot/aotLoader.hpp"
28#include "classfile/classLoader.hpp"
29#include "classfile/classLoaderDataGraph.hpp"
30#include "classfile/stringTable.hpp"
31#include "classfile/symbolTable.hpp"
32#include "classfile/systemDictionary.hpp"
33#include "code/codeCache.hpp"
34#include "compiler/compileBroker.hpp"
35#include "compiler/compilerOracle.hpp"
36#include "interpreter/bytecodeHistogram.hpp"
37#include "jfr/jfrEvents.hpp"
38#include "jfr/support/jfrThreadId.hpp"
39#if INCLUDE_JVMCI
40#include "jvmci/jvmci.hpp"
41#endif
42#include "logging/log.hpp"
43#include "logging/logStream.hpp"
44#include "memory/oopFactory.hpp"
45#include "memory/resourceArea.hpp"
46#include "memory/dynamicArchive.hpp"
47#include "memory/universe.hpp"
48#include "oops/constantPool.hpp"
49#include "oops/generateOopMap.hpp"
50#include "oops/instanceKlass.hpp"
51#include "oops/instanceOop.hpp"
52#include "oops/method.hpp"
53#include "oops/objArrayOop.hpp"
54#include "oops/oop.inline.hpp"
55#include "oops/symbol.hpp"
56#include "prims/jvmtiExport.hpp"
57#include "runtime/arguments.hpp"
58#include "runtime/biasedLocking.hpp"
59#include "runtime/compilationPolicy.hpp"
60#include "runtime/deoptimization.hpp"
61#include "runtime/flags/flagSetting.hpp"
62#include "runtime/handles.inline.hpp"
63#include "runtime/init.hpp"
64#include "runtime/interfaceSupport.inline.hpp"
65#include "runtime/java.hpp"
66#include "runtime/memprofiler.hpp"
67#include "runtime/sharedRuntime.hpp"
68#include "runtime/statSampler.hpp"
69#include "runtime/sweeper.hpp"
70#include "runtime/task.hpp"
71#include "runtime/thread.inline.hpp"
72#include "runtime/timer.hpp"
73#include "runtime/vmOperations.hpp"
74#include "services/memTracker.hpp"
75#include "utilities/dtrace.hpp"
76#include "utilities/globalDefinitions.hpp"
77#include "utilities/histogram.hpp"
78#include "utilities/macros.hpp"
79#include "utilities/vmError.hpp"
80#ifdef COMPILER1
81#include "c1/c1_Compiler.hpp"
82#include "c1/c1_Runtime1.hpp"
83#endif
84#ifdef COMPILER2
85#include "code/compiledIC.hpp"
86#include "opto/compile.hpp"
87#include "opto/indexSet.hpp"
88#include "opto/runtime.hpp"
89#endif
90#if INCLUDE_JFR
91#include "jfr/jfr.hpp"
92#endif
93
94GrowableArray<Method*>* collected_profiled_methods;
95
96int compare_methods(Method** a, Method** b) {
97 // %%% there can be 32-bit overflow here
98 return ((*b)->invocation_count() + (*b)->compiled_invocation_count())
99 - ((*a)->invocation_count() + (*a)->compiled_invocation_count());
100}
101
102void collect_profiled_methods(Method* m) {
103 Thread* thread = Thread::current();
104 methodHandle mh(thread, m);
105 if ((m->method_data() != NULL) &&
106 (PrintMethodData || CompilerOracle::should_print(mh))) {
107 collected_profiled_methods->push(m);
108 }
109}
110
111void print_method_profiling_data() {
112 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData) &&
113 (PrintMethodData || CompilerOracle::should_print_methods())) {
114 ResourceMark rm;
115 HandleMark hm;
116 collected_profiled_methods = new GrowableArray<Method*>(1024);
117 SystemDictionary::methods_do(collect_profiled_methods);
118 collected_profiled_methods->sort(&compare_methods);
119
120 int count = collected_profiled_methods->length();
121 int total_size = 0;
122 if (count > 0) {
123 for (int index = 0; index < count; index++) {
124 Method* m = collected_profiled_methods->at(index);
125 ttyLocker ttyl;
126 tty->print_cr("------------------------------------------------------------------------");
127 m->print_invocation_count();
128 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes());
129 tty->cr();
130 // Dump data on parameters if any
131 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) {
132 tty->fill_to(2);
133 m->method_data()->parameters_type_data()->print_data_on(tty);
134 }
135 m->print_codes();
136 total_size += m->method_data()->size_in_bytes();
137 }
138 tty->print_cr("------------------------------------------------------------------------");
139 tty->print_cr("Total MDO size: %d bytes", total_size);
140 }
141 }
142}
143
144
145#ifndef PRODUCT
146
147// Statistics printing (method invocation histogram)
148
149GrowableArray<Method*>* collected_invoked_methods;
150
151void collect_invoked_methods(Method* m) {
152 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {
153 collected_invoked_methods->push(m);
154 }
155}
156
157
158
159
160void print_method_invocation_histogram() {
161 ResourceMark rm;
162 HandleMark hm;
163 collected_invoked_methods = new GrowableArray<Method*>(1024);
164 SystemDictionary::methods_do(collect_invoked_methods);
165 collected_invoked_methods->sort(&compare_methods);
166 //
167 tty->cr();
168 tty->print_cr("Histogram Over Method Invocation Counters (cutoff = " INTX_FORMAT "):", MethodHistogramCutoff);
169 tty->cr();
170 tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
171 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,
172 synch_total = 0, nativ_total = 0, acces_total = 0;
173 for (int index = 0; index < collected_invoked_methods->length(); index++) {
174 Method* m = collected_invoked_methods->at(index);
175 int c = m->invocation_count() + m->compiled_invocation_count();
176 if (c >= MethodHistogramCutoff) m->print_invocation_count();
177 int_total += m->invocation_count();
178 comp_total += m->compiled_invocation_count();
179 if (m->is_final()) final_total += c;
180 if (m->is_static()) static_total += c;
181 if (m->is_synchronized()) synch_total += c;
182 if (m->is_native()) nativ_total += c;
183 if (m->is_accessor()) acces_total += c;
184 }
185 tty->cr();
186 total = int_total + comp_total;
187 tty->print_cr("Invocations summary:");
188 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total);
189 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total);
190 tty->print_cr("\t%9d (100%%) total", total);
191 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total);
192 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total);
193 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total);
194 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total);
195 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total);
196 tty->cr();
197 SharedRuntime::print_call_statistics(comp_total);
198}
199
200void print_bytecode_count() {
201 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
202 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
203 }
204}
205
206AllocStats alloc_stats;
207
208
209
210// General statistics printing (profiling ...)
211void print_statistics() {
212#ifdef ASSERT
213
214 if (CountRuntimeCalls) {
215 extern Histogram *RuntimeHistogram;
216 RuntimeHistogram->print();
217 }
218
219 if (CountJNICalls) {
220 extern Histogram *JNIHistogram;
221 JNIHistogram->print();
222 }
223
224 if (CountJVMCalls) {
225 extern Histogram *JVMHistogram;
226 JVMHistogram->print();
227 }
228
229#endif
230
231 if (MemProfiling) {
232 MemProfiler::disengage();
233 }
234
235 if (CITime) {
236 CompileBroker::print_times();
237 }
238
239#ifdef COMPILER1
240 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {
241 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);
242 Runtime1::print_statistics();
243 Deoptimization::print_statistics();
244 SharedRuntime::print_statistics();
245 }
246#endif /* COMPILER1 */
247
248#ifdef COMPILER2
249 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {
250 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);
251 Compile::print_statistics();
252#ifndef COMPILER1
253 Deoptimization::print_statistics();
254 SharedRuntime::print_statistics();
255#endif //COMPILER1
256 os::print_statistics();
257 }
258
259 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {
260 OptoRuntime::print_named_counters();
261 }
262#ifdef ASSERT
263 if (CollectIndexSetStatistics) {
264 IndexSet::print_statistics();
265 }
266#endif // ASSERT
267#else // COMPILER2
268#if INCLUDE_JVMCI
269#ifndef COMPILER1
270 if ((TraceDeoptimization || LogVMOutput || LogCompilation) && UseCompiler) {
271 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && TraceDeoptimization);
272 Deoptimization::print_statistics();
273 SharedRuntime::print_statistics();
274 }
275#endif // COMPILER1
276#endif // INCLUDE_JVMCI
277#endif // COMPILER2
278
279 if (PrintAOTStatistics) {
280 AOTLoader::print_statistics();
281 }
282
283 if (PrintNMethodStatistics) {
284 nmethod::print_statistics();
285 }
286 if (CountCompiledCalls) {
287 print_method_invocation_histogram();
288 }
289
290 print_method_profiling_data();
291
292 if (TimeOopMap) {
293 GenerateOopMap::print_time();
294 }
295 if (PrintSymbolTableSizeHistogram) {
296 SymbolTable::print_histogram();
297 }
298 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
299 BytecodeCounter::print();
300 }
301 if (PrintBytecodePairHistogram) {
302 BytecodePairHistogram::print();
303 }
304
305 if (PrintCodeCache) {
306 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
307 CodeCache::print();
308 }
309
310 // CodeHeap State Analytics.
311 // Does also call NMethodSweeper::print(tty)
312 if (PrintCodeHeapAnalytics) {
313 CompileBroker::print_heapinfo(NULL, "all", 4096); // details
314 } else if (PrintMethodFlushingStatistics) {
315 NMethodSweeper::print(tty);
316 }
317
318 if (PrintCodeCache2) {
319 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
320 CodeCache::print_internals();
321 }
322
323 if (PrintVtableStats) {
324 klassVtable::print_statistics();
325 klassItable::print_statistics();
326 }
327 if (VerifyOops && Verbose) {
328 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());
329 }
330
331 print_bytecode_count();
332 if (PrintMallocStatistics) {
333 tty->print("allocation stats: ");
334 alloc_stats.print();
335 tty->cr();
336 }
337
338 if (PrintSystemDictionaryAtExit) {
339 ResourceMark rm;
340 MutexLocker mcld(ClassLoaderDataGraph_lock);
341 SystemDictionary::print();
342 ClassLoaderDataGraph::print();
343 }
344
345 if (LogTouchedMethods && PrintTouchedMethodsAtExit) {
346 Method::print_touched_methods(tty);
347 }
348
349 if (PrintBiasedLockingStatistics) {
350 BiasedLocking::print_counters();
351 }
352
353 // Native memory tracking data
354 if (PrintNMTStatistics) {
355 MemTracker::final_report(tty);
356 }
357
358 ThreadsSMRSupport::log_statistics();
359}
360
361#else // PRODUCT MODE STATISTICS
362
363void print_statistics() {
364
365 if (PrintMethodData) {
366 print_method_profiling_data();
367 }
368
369 if (CITime) {
370 CompileBroker::print_times();
371 }
372
373 if (PrintCodeCache) {
374 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
375 CodeCache::print();
376 }
377
378 // CodeHeap State Analytics.
379 // Does also call NMethodSweeper::print(tty)
380 if (PrintCodeHeapAnalytics) {
381 CompileBroker::print_heapinfo(NULL, "all", 4096); // details
382 } else if (PrintMethodFlushingStatistics) {
383 NMethodSweeper::print(tty);
384 }
385
386#ifdef COMPILER2
387 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {
388 OptoRuntime::print_named_counters();
389 }
390#endif
391 if (PrintBiasedLockingStatistics) {
392 BiasedLocking::print_counters();
393 }
394
395 // Native memory tracking data
396 if (PrintNMTStatistics) {
397 MemTracker::final_report(tty);
398 }
399
400 if (LogTouchedMethods && PrintTouchedMethodsAtExit) {
401 Method::print_touched_methods(tty);
402 }
403
404 ThreadsSMRSupport::log_statistics();
405}
406
407#endif
408
409// Note: before_exit() can be executed only once, if more than one threads
410// are trying to shutdown the VM at the same time, only one thread
411// can run before_exit() and all other threads must wait.
412void before_exit(JavaThread* thread) {
413 #define BEFORE_EXIT_NOT_RUN 0
414 #define BEFORE_EXIT_RUNNING 1
415 #define BEFORE_EXIT_DONE 2
416 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
417
418 // Note: don't use a Mutex to guard the entire before_exit(), as
419 // JVMTI post_thread_end_event and post_vm_death_event will run native code.
420 // A CAS or OSMutex would work just fine but then we need to manipulate
421 // thread state for Safepoint. Here we use Monitor wait() and notify_all()
422 // for synchronization.
423 { MonitorLocker ml(BeforeExit_lock);
424 switch (_before_exit_status) {
425 case BEFORE_EXIT_NOT_RUN:
426 _before_exit_status = BEFORE_EXIT_RUNNING;
427 break;
428 case BEFORE_EXIT_RUNNING:
429 while (_before_exit_status == BEFORE_EXIT_RUNNING) {
430 ml.wait();
431 }
432 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
433 return;
434 case BEFORE_EXIT_DONE:
435 // need block to avoid SS compiler bug
436 {
437 return;
438 }
439 }
440 }
441
442#if INCLUDE_JVMCI
443 JVMCI::shutdown();
444#endif
445
446 // Hang forever on exit if we're reporting an error.
447 if (ShowMessageBoxOnError && VMError::is_error_reported()) {
448 os::infinite_sleep();
449 }
450
451 EventThreadEnd event;
452 if (event.should_commit()) {
453 event.set_thread(JFR_THREAD_ID(thread));
454 event.commit();
455 }
456
457 JFR_ONLY(Jfr::on_vm_shutdown();)
458
459 // Stop the WatcherThread. We do this before disenrolling various
460 // PeriodicTasks to reduce the likelihood of races.
461 if (PeriodicTask::num_tasks() > 0) {
462 WatcherThread::stop();
463 }
464
465 // shut down the StatSampler task
466 StatSampler::disengage();
467 StatSampler::destroy();
468
469 // Stop concurrent GC threads
470 Universe::heap()->stop();
471
472 // Print GC/heap related information.
473 Log(gc, heap, exit) log;
474 if (log.is_info()) {
475 ResourceMark rm;
476 LogStream ls_info(log.info());
477 Universe::print_on(&ls_info);
478 if (log.is_trace()) {
479 LogStream ls_trace(log.trace());
480 MutexLocker mcld(ClassLoaderDataGraph_lock);
481 ClassLoaderDataGraph::print_on(&ls_trace);
482 }
483 }
484
485 if (PrintBytecodeHistogram) {
486 BytecodeHistogram::print();
487 }
488
489 if (JvmtiExport::should_post_thread_life()) {
490 JvmtiExport::post_thread_end(thread);
491 }
492
493 // Always call even when there are not JVMTI environments yet, since environments
494 // may be attached late and JVMTI must track phases of VM execution
495 JvmtiExport::post_vm_death();
496 Threads::shutdown_vm_agents();
497
498 // Terminate the signal thread
499 // Note: we don't wait until it actually dies.
500 os::terminate_signal_thread();
501
502#if INCLUDE_CDS
503 if (DynamicDumpSharedSpaces) {
504 DynamicArchive::dump();
505 }
506#endif
507
508 print_statistics();
509 Universe::heap()->print_tracing_info();
510
511 { MutexLocker ml(BeforeExit_lock);
512 _before_exit_status = BEFORE_EXIT_DONE;
513 BeforeExit_lock->notify_all();
514 }
515
516 if (VerifyStringTableAtExit) {
517 size_t fail_cnt = StringTable::verify_and_compare_entries();
518 if (fail_cnt != 0) {
519 tty->print_cr("ERROR: fail_cnt=" SIZE_FORMAT, fail_cnt);
520 guarantee(fail_cnt == 0, "unexpected StringTable verification failures");
521 }
522 }
523
524 #undef BEFORE_EXIT_NOT_RUN
525 #undef BEFORE_EXIT_RUNNING
526 #undef BEFORE_EXIT_DONE
527}
528
529void vm_exit(int code) {
530 Thread* thread =
531 ThreadLocalStorage::is_initialized() ? Thread::current_or_null() : NULL;
532 if (thread == NULL) {
533 // very early initialization failure -- just exit
534 vm_direct_exit(code);
535 }
536
537 // We'd like to add an entry to the XML log to show that the VM is
538 // terminating, but we can't safely do that here. The logic to make
539 // XML termination logging safe is tied to the termination of the
540 // VMThread, and it doesn't terminate on this exit path. See 8222534.
541
542 if (VMThread::vm_thread() != NULL) {
543 if (thread->is_Java_thread()) {
544 // We must be "in_vm" for the code below to work correctly.
545 // Historically there must have been some exit path for which
546 // that was not the case and so we set it explicitly - even
547 // though we no longer know what that path may be.
548 ((JavaThread*)thread)->set_thread_state(_thread_in_vm);
549 }
550
551 // Fire off a VM_Exit operation to bring VM to a safepoint and exit
552 VM_Exit op(code);
553
554 // 4945125 The vm thread comes to a safepoint during exit.
555 // GC vm_operations can get caught at the safepoint, and the
556 // heap is unparseable if they are caught. Grab the Heap_lock
557 // to prevent this. The GC vm_operations will not be able to
558 // queue until after we release it, but we never do that as we
559 // are terminating the VM process.
560 MutexLocker ml(Heap_lock);
561
562 VMThread::execute(&op);
563 // should never reach here; but in case something wrong with VM Thread.
564 vm_direct_exit(code);
565 } else {
566 // VM thread is gone, just exit
567 vm_direct_exit(code);
568 }
569 ShouldNotReachHere();
570}
571
572void notify_vm_shutdown() {
573 // For now, just a dtrace probe.
574 HOTSPOT_VM_SHUTDOWN();
575 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG();
576}
577
578void vm_direct_exit(int code) {
579 notify_vm_shutdown();
580 os::wait_for_keypress_at_exit();
581 os::exit(code);
582}
583
584void vm_perform_shutdown_actions() {
585 if (is_init_completed()) {
586 Thread* thread = Thread::current_or_null();
587 if (thread != NULL && thread->is_Java_thread()) {
588 // We are leaving the VM, set state to native (in case any OS exit
589 // handlers call back to the VM)
590 JavaThread* jt = (JavaThread*)thread;
591 // Must always be walkable or have no last_Java_frame when in
592 // thread_in_native
593 jt->frame_anchor()->make_walkable(jt);
594 jt->set_thread_state(_thread_in_native);
595 }
596 }
597 notify_vm_shutdown();
598}
599
600void vm_shutdown()
601{
602 vm_perform_shutdown_actions();
603 os::wait_for_keypress_at_exit();
604 os::shutdown();
605}
606
607void vm_abort(bool dump_core) {
608 vm_perform_shutdown_actions();
609 os::wait_for_keypress_at_exit();
610
611 // Flush stdout and stderr before abort.
612 fflush(stdout);
613 fflush(stderr);
614
615 os::abort(dump_core);
616 ShouldNotReachHere();
617}
618
619void vm_notify_during_cds_dumping(const char* error, const char* message) {
620 if (error != NULL) {
621 tty->print_cr("Error occurred during CDS dumping");
622 tty->print("%s", error);
623 if (message != NULL) {
624 tty->print_cr(": %s", message);
625 }
626 else {
627 tty->cr();
628 }
629 }
630}
631
632void vm_exit_during_cds_dumping(const char* error, const char* message) {
633 vm_notify_during_cds_dumping(error, message);
634
635 // Failure during CDS dumping, we don't want to dump core
636 vm_abort(false);
637}
638
639void vm_notify_during_shutdown(const char* error, const char* message) {
640 if (error != NULL) {
641 tty->print_cr("Error occurred during initialization of VM");
642 tty->print("%s", error);
643 if (message != NULL) {
644 tty->print_cr(": %s", message);
645 }
646 else {
647 tty->cr();
648 }
649 }
650 if (ShowMessageBoxOnError && WizardMode) {
651 fatal("Error occurred during initialization of VM");
652 }
653}
654
655void vm_exit_during_initialization() {
656 vm_notify_during_shutdown(NULL, NULL);
657
658 // Failure during initialization, we don't want to dump core
659 vm_abort(false);
660}
661
662void 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(); // can't be NULL
668 if (HAS_PENDING_EXCEPTION) {
669 CLEAR_PENDING_EXCEPTION;
670 }
671 java_lang_Throwable::print_stack_trace(exception, tty);
672 tty->cr();
673 vm_notify_during_shutdown(NULL, NULL);
674
675 // Failure during initialization, we don't want to dump core
676 vm_abort(false);
677}
678
679void vm_exit_during_initialization(Symbol* ex, const char* message) {
680 ResourceMark rm;
681 vm_notify_during_shutdown(ex->as_C_string(), message);
682
683 // Failure during initialization, we don't want to dump core
684 vm_abort(false);
685}
686
687void vm_exit_during_initialization(const char* error, const char* message) {
688 vm_notify_during_shutdown(error, message);
689
690 // Failure during initialization, we don't want to dump core
691 vm_abort(false);
692}
693
694void vm_shutdown_during_initialization(const char* error, const char* message) {
695 vm_notify_during_shutdown(error, message);
696 vm_shutdown();
697}
698
699JDK_Version JDK_Version::_current;
700const char* JDK_Version::_runtime_name;
701const char* JDK_Version::_runtime_version;
702
703void JDK_Version::initialize() {
704 jdk_version_info info;
705 assert(!_current.is_valid(), "Don't initialize twice");
706
707 void *lib_handle = os::native_java_library();
708 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t,
709 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
710
711 assert(func != NULL, "Support for JDK 1.5 or older has been removed after JEP-223");
712
713 (*func)(&info, sizeof(info));
714
715 int major = JDK_VERSION_MAJOR(info.jdk_version);
716 int minor = JDK_VERSION_MINOR(info.jdk_version);
717 int security = JDK_VERSION_SECURITY(info.jdk_version);
718 int build = JDK_VERSION_BUILD(info.jdk_version);
719
720 _current = JDK_Version(major, minor, security, info.patch_version, build);
721}
722
723void JDK_Version_init() {
724 JDK_Version::initialize();
725}
726
727static int64_t encode_jdk_version(const JDK_Version& v) {
728 return
729 ((int64_t)v.major_version() << (BitsPerByte * 4)) |
730 ((int64_t)v.minor_version() << (BitsPerByte * 3)) |
731 ((int64_t)v.security_version() << (BitsPerByte * 2)) |
732 ((int64_t)v.patch_version() << (BitsPerByte * 1)) |
733 ((int64_t)v.build_number() << (BitsPerByte * 0));
734}
735
736int JDK_Version::compare(const JDK_Version& other) const {
737 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)");
738 uint64_t e = encode_jdk_version(*this);
739 uint64_t o = encode_jdk_version(other);
740 return (e > o) ? 1 : ((e == o) ? 0 : -1);
741}
742
743void JDK_Version::to_string(char* buffer, size_t buflen) const {
744 assert(buffer && buflen > 0, "call with useful buffer");
745 size_t index = 0;
746
747 if (!is_valid()) {
748 jio_snprintf(buffer, buflen, "%s", "(uninitialized)");
749 } else {
750 int rc = jio_snprintf(
751 &buffer[index], buflen - index, "%d.%d", _major, _minor);
752 if (rc == -1) return;
753 index += rc;
754 if (_security > 0) {
755 rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _security);
756 if (rc == -1) return;
757 index += rc;
758 }
759 if (_patch > 0) {
760 rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _patch);
761 if (rc == -1) return;
762 index += rc;
763 }
764 if (_build > 0) {
765 rc = jio_snprintf(&buffer[index], buflen - index, "+%d", _build);
766 if (rc == -1) return;
767 index += rc;
768 }
769 }
770}
771