1 /*
2 * Copyright (c) 1997, 2025, 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 "cds/cds_globals.hpp"
26 #include "cds/cdsConfig.hpp"
27 #include "cds/classListWriter.hpp"
28 #include "cds/dynamicArchive.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/classLoaderDataGraph.hpp"
31 #include "classfile/javaClasses.hpp"
32 #include "classfile/stringTable.hpp"
33 #include "classfile/symbolTable.hpp"
34 #include "classfile/systemDictionary.hpp"
35 #include "code/codeCache.hpp"
36 #include "compiler/compilationMemoryStatistic.hpp"
37 #include "compiler/compileBroker.hpp"
38 #include "compiler/compilerOracle.hpp"
39 #include "gc/shared/collectedHeap.hpp"
40 #include "gc/shared/stringdedup/stringDedup.hpp"
41 #include "interpreter/bytecodeHistogram.hpp"
42 #include "jfr/jfrEvents.hpp"
43 #include "jfr/support/jfrThreadId.hpp"
44 #include "jvm.h"
45 #include "logging/log.hpp"
46 #include "logging/logStream.hpp"
47 #include "memory/metaspaceUtils.hpp"
48 #include "memory/oopFactory.hpp"
49 #include "memory/resourceArea.hpp"
50 #include "memory/universe.hpp"
51 #include "nmt/memMapPrinter.hpp"
52 #include "nmt/memTracker.hpp"
53 #include "oops/constantPool.hpp"
54 #include "oops/generateOopMap.hpp"
55 #include "oops/instanceKlass.hpp"
56 #include "oops/instanceOop.hpp"
57 #include "oops/klassVtable.hpp"
58 #include "oops/method.inline.hpp"
59 #include "oops/objArrayOop.hpp"
60 #include "oops/oop.inline.hpp"
61 #include "oops/symbol.hpp"
62 #include "prims/jvmtiAgentList.hpp"
63 #include "prims/jvmtiExport.hpp"
64 #include "runtime/continuation.hpp"
65 #include "runtime/deoptimization.hpp"
66 #include "runtime/flags/flagSetting.hpp"
67 #include "runtime/handles.inline.hpp"
68 #include "runtime/init.hpp"
69 #include "runtime/interfaceSupport.inline.hpp"
70 #include "runtime/java.hpp"
71 #include "runtime/javaThread.hpp"
72 #include "runtime/sharedRuntime.hpp"
73 #include "runtime/statSampler.hpp"
74 #include "runtime/stubRoutines.hpp"
75 #include "runtime/task.hpp"
76 #include "runtime/threads.hpp"
77 #include "runtime/timer.hpp"
78 #include "runtime/trimNativeHeap.hpp"
79 #include "runtime/vmOperations.hpp"
80 #include "runtime/vmThread.hpp"
81 #include "runtime/vm_version.hpp"
82 #include "sanitizers/leak.hpp"
83 #include "utilities/dtrace.hpp"
84 #include "utilities/events.hpp"
85 #include "utilities/globalDefinitions.hpp"
86 #include "utilities/macros.hpp"
87 #include "utilities/vmError.hpp"
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 "opto/compile.hpp"
95 #include "opto/indexSet.hpp"
96 #include "opto/runtime.hpp"
97 #endif
98 #if INCLUDE_JFR
99 #include "jfr/jfr.hpp"
100 #endif
101 #if INCLUDE_JVMCI
102 #include "jvmci/jvmci.hpp"
103 #endif
104
105 GrowableArray<Method*>* collected_profiled_methods;
106
107 static int compare_methods(Method** a, Method** b) {
108 // compiled_invocation_count() returns int64_t, forcing the entire expression
109 // to be evaluated as int64_t. Overflow is not an issue.
110 int64_t diff = (((*b)->invocation_count() + (*b)->compiled_invocation_count())
111 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()));
112 return (diff < 0) ? -1 : (diff > 0) ? 1 : 0;
113 }
114
115 static void collect_profiled_methods(Method* m) {
116 Thread* thread = Thread::current();
117 methodHandle mh(thread, m);
118 if ((m->method_data() != nullptr) &&
119 (PrintMethodData || CompilerOracle::should_print(mh))) {
120 collected_profiled_methods->push(m);
121 }
122 }
123
124 static void print_method_profiling_data() {
125 if ((ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) &&
126 (PrintMethodData || CompilerOracle::should_print_methods())) {
127 ResourceMark rm;
128 collected_profiled_methods = new GrowableArray<Method*>(1024);
129 SystemDictionary::methods_do(collect_profiled_methods);
130 collected_profiled_methods->sort(&compare_methods);
131
132 int count = collected_profiled_methods->length();
133 int total_size = 0;
134 if (count > 0) {
135 for (int index = 0; index < count; index++) {
136 Method* m = collected_profiled_methods->at(index);
137
138 // Instead of taking tty lock, we collect all lines into a string stream
139 // and then print them all at once.
140 ResourceMark rm2;
141 stringStream ss;
142
143 ss.print_cr("------------------------------------------------------------------------");
144 m->print_invocation_count(&ss);
145 ss.print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes());
146 ss.cr();
147 // Dump data on parameters if any
148 if (m->method_data() != nullptr && m->method_data()->parameters_type_data() != nullptr) {
149 ss.fill_to(2);
150 m->method_data()->parameters_type_data()->print_data_on(&ss);
151 }
152 m->print_codes_on(&ss);
153 tty->print("%s", ss.as_string()); // print all at once
154 total_size += m->method_data()->size_in_bytes();
155 }
156 tty->print_cr("------------------------------------------------------------------------");
157 tty->print_cr("Total MDO size: %d bytes", total_size);
158 }
159 }
160 }
161
162 #ifndef PRODUCT
163
164 // Statistics printing (method invocation histogram)
165
166 GrowableArray<Method*>* collected_invoked_methods;
167
168 static void collect_invoked_methods(Method* m) {
169 if (m->invocation_count() + m->compiled_invocation_count() >= 1) {
170 collected_invoked_methods->push(m);
171 }
172 }
173
174
175 // Invocation count accumulators should be unsigned long to shift the
176 // overflow border. Longer-running workloads tend to create invocation
177 // counts which already overflow 32-bit counters for individual methods.
178 static void print_method_invocation_histogram() {
179 ResourceMark rm;
180 collected_invoked_methods = new GrowableArray<Method*>(1024);
181 SystemDictionary::methods_do(collect_invoked_methods);
182 collected_invoked_methods->sort(&compare_methods);
183 //
184 tty->cr();
185 tty->print_cr("Histogram Over Method Invocation Counters (cutoff = %zd):", MethodHistogramCutoff);
186 tty->cr();
187 tty->print_cr("____Count_(I+C)____Method________________________Module_________________");
188 uint64_t total = 0,
189 int_total = 0,
190 comp_total = 0,
191 special_total= 0,
192 static_total = 0,
193 final_total = 0,
194 synch_total = 0,
195 native_total = 0,
196 access_total = 0;
197 for (int index = 0; index < collected_invoked_methods->length(); index++) {
198 // Counter values returned from getter methods are signed int.
199 // To shift the overflow border by a factor of two, we interpret
200 // them here as unsigned long. A counter can't be negative anyway.
201 Method* m = collected_invoked_methods->at(index);
202 uint64_t iic = (uint64_t)m->invocation_count();
203 uint64_t cic = (uint64_t)m->compiled_invocation_count();
204 if ((iic + cic) >= (uint64_t)MethodHistogramCutoff) m->print_invocation_count(tty);
205 int_total += iic;
206 comp_total += cic;
207 if (m->is_final()) final_total += iic + cic;
208 if (m->is_static()) static_total += iic + cic;
209 if (m->is_synchronized()) synch_total += iic + cic;
210 if (m->is_native()) native_total += iic + cic;
211 if (m->is_accessor()) access_total += iic + cic;
212 }
213 tty->cr();
214 total = int_total + comp_total;
215 special_total = final_total + static_total +synch_total + native_total + access_total;
216 tty->print_cr("Invocations summary for %d methods:", collected_invoked_methods->length());
217 double total_div = (double)total;
218 tty->print_cr("\t" UINT64_FORMAT_W(12) " (100%%) total", total);
219 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- interpreted", int_total, 100.0 * (double)int_total / total_div);
220 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- compiled", comp_total, 100.0 * (double)comp_total / total_div);
221 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- special methods (interpreted and compiled)",
222 special_total, 100.0 * (double)special_total/ total_div);
223 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- synchronized",synch_total, 100.0 * (double)synch_total / total_div);
224 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- final", final_total, 100.0 * (double)final_total / total_div);
225 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- static", static_total, 100.0 * (double)static_total / total_div);
226 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- native", native_total, 100.0 * (double)native_total / total_div);
227 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- accessor", access_total, 100.0 * (double)access_total / total_div);
228 tty->cr();
229 SharedRuntime::print_call_statistics(comp_total);
230 }
231
232 static void print_bytecode_count() {
233 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {
234 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());
235 }
236 }
237
238 #else
239
240 static void print_method_invocation_histogram() {}
241 static void print_bytecode_count() {}
242
243 #endif // PRODUCT
244
245
246 // General statistics printing (profiling ...)
247 void print_statistics() {
248 if (CITime) {
249 CompileBroker::print_times();
250 }
251
252 #ifdef COMPILER1
253 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {
254 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);
255 Runtime1::print_statistics();
256 SharedRuntime::print_statistics();
257 }
258 #endif /* COMPILER1 */
259
260 #ifdef COMPILER2
261 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {
262 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);
263 Compile::print_statistics();
264 Deoptimization::print_statistics();
265 #ifndef COMPILER1
266 SharedRuntime::print_statistics();
267 #endif //COMPILER1
268 }
269
270 if (PrintLockStatistics) {
271 OptoRuntime::print_named_counters();
272 }
273 #ifdef ASSERT
274 if (CollectIndexSetStatistics) {
275 IndexSet::print_statistics();
276 }
277 #endif // ASSERT
278 #else // COMPILER2
279 #if INCLUDE_JVMCI
280 #ifndef COMPILER1
281 if ((TraceDeoptimization || LogVMOutput || LogCompilation) && UseCompiler) {
282 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && TraceDeoptimization);
283 Deoptimization::print_statistics();
284 SharedRuntime::print_statistics();
285 }
286 #endif // COMPILER1
287 #endif // INCLUDE_JVMCI
288 #endif // COMPILER2
289
290 if (PrintNMethodStatistics) {
291 nmethod::print_statistics();
292 }
293 if (CountCompiledCalls) {
294 print_method_invocation_histogram();
295 }
296
297 print_method_profiling_data();
298
299 if (TimeOopMap) {
300 GenerateOopMap::print_time();
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 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
314 CodeCache::print();
315 }
316
317 // CodeHeap State Analytics.
318 if (PrintCodeHeapAnalytics) {
319 CompileBroker::print_heapinfo(nullptr, "all", 4096); // details
320 }
321
322 #ifndef PRODUCT
323 if (PrintCodeCache2) {
324 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
325 CodeCache::print_internals();
326 }
327 #endif
328
329 if (VerifyOops && Verbose) {
330 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());
331 }
332
333 print_bytecode_count();
334
335 if (PrintSystemDictionaryAtExit) {
336 ResourceMark rm;
337 MutexLocker mcld(ClassLoaderDataGraph_lock);
338 SystemDictionary::print();
339 }
340
341 if (PrintClassLoaderDataGraphAtExit) {
342 ResourceMark rm;
343 MutexLocker mcld(ClassLoaderDataGraph_lock);
344 ClassLoaderDataGraph::print();
345 }
346
347 // Native memory tracking data
348 if (PrintNMTStatistics) {
349 MemTracker::final_report(tty);
350 }
351
352 if (PrintMetaspaceStatisticsAtExit) {
353 MetaspaceUtils::print_basic_report(tty, 0);
354 }
355
356 if (CompilerOracle::should_print_final_memstat_report()) {
357 CompilationMemoryStatistic::print_all_by_size(tty, false, 0);
358 }
359
360 ThreadsSMRSupport::log_statistics();
361
362 if (log_is_enabled(Info, perf, class, link)) {
363 LogStreamHandle(Info, perf, class, link) log;
364 log.print_cr("At VM exit:");
365 ClassLoader::print_counters(&log);
366 }
367 }
368
369 // Note: before_exit() can be executed only once, if more than one threads
370 // are trying to shutdown the VM at the same time, only one thread
371 // can run before_exit() and all other threads must wait.
372 void before_exit(JavaThread* thread, bool halt) {
373 #define BEFORE_EXIT_NOT_RUN 0
374 #define BEFORE_EXIT_RUNNING 1
375 #define BEFORE_EXIT_DONE 2
376 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;
377
378 Events::log(thread, "Before exit entered");
379
380 // Note: don't use a Mutex to guard the entire before_exit(), as
381 // JVMTI post_thread_end_event and post_vm_death_event will run native code.
382 // A CAS or OSMutex would work just fine but then we need to manipulate
383 // thread state for Safepoint. Here we use Monitor wait() and notify_all()
384 // for synchronization.
385 { MonitorLocker ml(BeforeExit_lock);
386 switch (_before_exit_status) {
387 case BEFORE_EXIT_NOT_RUN:
388 _before_exit_status = BEFORE_EXIT_RUNNING;
389 break;
390 case BEFORE_EXIT_RUNNING:
391 while (_before_exit_status == BEFORE_EXIT_RUNNING) {
392 ml.wait();
393 }
394 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");
395 return;
396 case BEFORE_EXIT_DONE:
397 // need block to avoid SS compiler bug
398 {
399 return;
400 }
401 }
402 }
403
404 // At this point only one thread is executing this logic. Any other threads
405 // attempting to invoke before_exit() will wait above and return early once
406 // this thread finishes before_exit().
407
408 // Do not add any additional shutdown logic between the above mutex logic and
409 // leak sanitizer logic below. Any additional shutdown code which performs some
410 // cleanup should be added after the leak sanitizer logic below.
411
412 #ifdef LEAK_SANITIZER
413 // If we are built with LSan, we need to perform leak checking. If we are
414 // terminating normally, not halting and no VM error, we perform a normal
415 // leak check which terminates if leaks are found. If we are not terminating
416 // normally, halting or VM error, we perform a recoverable leak check which
417 // prints leaks but will not terminate.
418 if (!halt && !VMError::is_error_reported()) {
419 LSAN_DO_LEAK_CHECK();
420 } else {
421 // Ignore the return value.
422 static_cast<void>(LSAN_DO_RECOVERABLE_LEAK_CHECK());
423 }
424 #endif
425
426 #if INCLUDE_CDS
427 // Dynamic CDS dumping must happen whilst we can still reliably
428 // run Java code.
429 DynamicArchive::dump_at_exit(thread, ArchiveClassesAtExit);
430 assert(!thread->has_pending_exception(), "must be");
431 #endif
432
433
434 // Actual shutdown logic begins here.
435
436 #if INCLUDE_JVMCI
437 if (EnableJVMCI) {
438 JVMCI::shutdown(thread);
439 }
440 #endif
441
442 #if INCLUDE_CDS
443 ClassListWriter::write_resolved_constants();
444
445 if (CDSConfig::is_dumping_preimage_static_archive()) {
446 MetaspaceShared::preload_and_dump(thread);
447 }
448 #endif
449
450 // Hang forever on exit if we're reporting an error.
451 if (ShowMessageBoxOnError && VMError::is_error_reported()) {
452 os::infinite_sleep();
453 }
454
455 EventThreadEnd event;
456 if (event.should_commit()) {
457 event.set_thread(JFR_JVM_THREAD_ID(thread));
458 event.commit();
459 }
460
461 JFR_ONLY(Jfr::on_vm_shutdown(false, halt);)
462
463 // Stop the WatcherThread. We do this before disenrolling various
464 // PeriodicTasks to reduce the likelihood of races.
465 WatcherThread::stop();
466
467 // shut down the StatSampler task
468 StatSampler::disengage();
469 StatSampler::destroy();
470
471 NativeHeapTrimmer::cleanup();
472
473 // Stop concurrent GC threads
474 Universe::heap()->stop();
475
476 // Print GC/heap related information.
477 Log(gc, heap, exit) log;
478 if (log.is_info()) {
479 ResourceMark rm;
480 LogStream ls_info(log.info());
481 Universe::print_on(&ls_info);
482 if (log.is_trace()) {
483 LogStream ls_trace(log.trace());
484 MutexLocker mcld(ClassLoaderDataGraph_lock);
485 ClassLoaderDataGraph::print_on(&ls_trace);
486 }
487 }
488
489 if (PrintBytecodeHistogram) {
490 BytecodeHistogram::print();
491 }
492
493 #ifdef LINUX
494 if (DumpPerfMapAtExit) {
495 CodeCache::write_perf_map(nullptr, tty);
496 }
497 if (PrintMemoryMapAtExit) {
498 MemMapPrinter::print_all_mappings(tty);
499 }
500 #endif
501
502 if (JvmtiExport::should_post_thread_life()) {
503 JvmtiExport::post_thread_end(thread);
504 }
505
506 // Always call even when there are not JVMTI environments yet, since environments
507 // may be attached late and JVMTI must track phases of VM execution
508 JvmtiExport::post_vm_death();
509 JvmtiAgentList::unload_agents();
510
511 // Terminate the signal thread
512 // Note: we don't wait until it actually dies.
513 os::terminate_signal_thread();
514
515 print_statistics();
516 Universe::heap()->print_tracing_info();
517
518 { MutexLocker ml(BeforeExit_lock);
519 _before_exit_status = BEFORE_EXIT_DONE;
520 BeforeExit_lock->notify_all();
521 }
522
523 if (VerifyStringTableAtExit) {
524 size_t fail_cnt = StringTable::verify_and_compare_entries();
525 if (fail_cnt != 0) {
526 tty->print_cr("ERROR: fail_cnt=%zu", fail_cnt);
527 guarantee(fail_cnt == 0, "unexpected StringTable verification failures");
528 }
529 }
530
531 #undef BEFORE_EXIT_NOT_RUN
532 #undef BEFORE_EXIT_RUNNING
533 #undef BEFORE_EXIT_DONE
534 }
535
536 void vm_exit(int code) {
537 Thread* thread =
538 ThreadLocalStorage::is_initialized() ? Thread::current_or_null() : nullptr;
539 if (thread == nullptr) {
540 // very early initialization failure -- just exit
541 vm_direct_exit(code);
542 }
543
544 // We'd like to add an entry to the XML log to show that the VM is
545 // terminating, but we can't safely do that here. The logic to make
546 // XML termination logging safe is tied to the termination of the
547 // VMThread, and it doesn't terminate on this exit path. See 8222534.
548
549 if (VMThread::vm_thread() != nullptr) {
550 if (thread->is_Java_thread()) {
551 // We must be "in_vm" for the code below to work correctly.
552 // Historically there must have been some exit path for which
553 // that was not the case and so we set it explicitly - even
554 // though we no longer know what that path may be.
555 JavaThread::cast(thread)->set_thread_state(_thread_in_vm);
556 }
557
558 // Fire off a VM_Exit operation to bring VM to a safepoint and exit
559 VM_Exit op(code);
560
561 // 4945125 The vm thread comes to a safepoint during exit.
562 // GC vm_operations can get caught at the safepoint, and the
563 // heap is unparseable if they are caught. Grab the Heap_lock
564 // to prevent this. The GC vm_operations will not be able to
565 // queue until after we release it, but we never do that as we
566 // are terminating the VM process.
567 MutexLocker ml(Heap_lock);
568
569 VMThread::execute(&op);
570 // should never reach here; but in case something wrong with VM Thread.
571 vm_direct_exit(code);
572 } else {
573 // VM thread is gone, just exit
574 vm_direct_exit(code);
575 }
576 ShouldNotReachHere();
577 }
578
579 void notify_vm_shutdown() {
580 // For now, just a dtrace probe.
581 HOTSPOT_VM_SHUTDOWN();
582 }
583
584 void vm_direct_exit(int code) {
585 notify_vm_shutdown();
586 os::wait_for_keypress_at_exit();
587 os::exit(code);
588 }
589
590 void vm_direct_exit(int code, const char* message) {
591 if (message != nullptr) {
592 tty->print_cr("%s", message);
593 }
594 vm_direct_exit(code);
595 }
596
597 static void vm_perform_shutdown_actions() {
598 if (is_init_completed()) {
599 Thread* thread = Thread::current_or_null();
600 if (thread != nullptr && thread->is_Java_thread()) {
601 // We are leaving the VM, set state to native (in case any OS exit
602 // handlers call back to the VM)
603 JavaThread* jt = JavaThread::cast(thread);
604 // Must always be walkable or have no last_Java_frame when in
605 // thread_in_native
606 jt->frame_anchor()->make_walkable();
607 jt->set_thread_state(_thread_in_native);
608 }
609 }
610 notify_vm_shutdown();
611 }
612
613 void vm_shutdown()
614 {
615 vm_perform_shutdown_actions();
616 os::wait_for_keypress_at_exit();
617 os::shutdown();
618 }
619
620 void vm_abort(bool dump_core) {
621 vm_perform_shutdown_actions();
622 os::wait_for_keypress_at_exit();
623
624 // Flush stdout and stderr before abort.
625 fflush(stdout);
626 fflush(stderr);
627
628 os::abort(dump_core);
629 ShouldNotReachHere();
630 }
631
632 static void vm_notify_during_cds_dumping(const char* error, const char* message) {
633 if (error != nullptr) {
634 tty->print_cr("Error occurred during CDS dumping");
635 tty->print("%s", error);
636 if (message != nullptr) {
637 tty->print_cr(": %s", message);
638 }
639 else {
640 tty->cr();
641 }
642 }
643 }
644
645 void vm_exit_during_cds_dumping(const char* error, const char* message) {
646 vm_notify_during_cds_dumping(error, message);
647
648 // Failure during CDS dumping, we don't want to dump core
649 vm_abort(false);
650 }
651
652 static void vm_notify_during_shutdown(const char* error, const char* message) {
653 if (error != nullptr) {
654 tty->print_cr("Error occurred during initialization of VM");
655 tty->print("%s", error);
656 if (message != nullptr) {
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() {
669 vm_notify_during_shutdown(nullptr, nullptr);
670
671 // Failure during initialization, we don't want to dump core
672 vm_abort(false);
673 }
674
675 void vm_exit_during_initialization(Handle exception) {
676 tty->print_cr("Error occurred during initialization of VM");
677 // If there are exceptions on this thread it must be cleared
678 // first and here. Any future calls to EXCEPTION_MARK requires
679 // that no pending exceptions exist.
680 JavaThread* THREAD = JavaThread::current(); // can't be null
681 if (HAS_PENDING_EXCEPTION) {
682 CLEAR_PENDING_EXCEPTION;
683 }
684 java_lang_Throwable::print_stack_trace(exception, tty);
685 tty->cr();
686 vm_notify_during_shutdown(nullptr, nullptr);
687
688 // Failure during initialization, we don't want to dump core
689 vm_abort(false);
690 }
691
692 void vm_exit_during_initialization(Symbol* ex, const char* message) {
693 ResourceMark rm;
694 vm_notify_during_shutdown(ex->as_C_string(), message);
695
696 // Failure during initialization, we don't want to dump core
697 vm_abort(false);
698 }
699
700 void vm_exit_during_initialization(const char* error, const char* message) {
701 vm_notify_during_shutdown(error, message);
702
703 // Failure during initialization, we don't want to dump core
704 vm_abort(false);
705 }
706
707 void vm_shutdown_during_initialization(const char* error, const char* message) {
708 vm_notify_during_shutdown(error, message);
709 vm_shutdown();
710 }
711
712 JDK_Version JDK_Version::_current;
713 const char* JDK_Version::_java_version;
714 const char* JDK_Version::_runtime_name;
715 const char* JDK_Version::_runtime_version;
716 const char* JDK_Version::_runtime_vendor_version;
717 const char* JDK_Version::_runtime_vendor_vm_bug_url;
718
719 void JDK_Version::initialize() {
720 assert(!_current.is_valid(), "Don't initialize twice");
721
722 int major = VM_Version::vm_major_version();
723 int minor = VM_Version::vm_minor_version();
724 int security = VM_Version::vm_security_version();
725 int build = VM_Version::vm_build_number();
726 int patch = VM_Version::vm_patch_version();
727 _current = JDK_Version(major, minor, security, patch, build);
728 }
729
730 void JDK_Version_init() {
731 JDK_Version::initialize();
732 }
733
734 static int64_t encode_jdk_version(const JDK_Version& v) {
735 return
736 ((int64_t)v.major_version() << (BitsPerByte * 4)) |
737 ((int64_t)v.minor_version() << (BitsPerByte * 3)) |
738 ((int64_t)v.security_version() << (BitsPerByte * 2)) |
739 ((int64_t)v.patch_version() << (BitsPerByte * 1)) |
740 ((int64_t)v.build_number() << (BitsPerByte * 0));
741 }
742
743 int JDK_Version::compare(const JDK_Version& other) const {
744 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)");
745 uint64_t e = encode_jdk_version(*this);
746 uint64_t o = encode_jdk_version(other);
747 return (e > o) ? 1 : ((e == o) ? 0 : -1);
748 }
749
750 /* See JEP 223 */
751 void JDK_Version::to_string(char* buffer, size_t buflen) const {
752 assert(buffer && buflen > 0, "call with useful buffer");
753 size_t index = 0;
754
755 if (!is_valid()) {
756 jio_snprintf(buffer, buflen, "%s", "(uninitialized)");
757 } else {
758 int rc = jio_snprintf(
759 &buffer[index], buflen - index, "%d.%d", _major, _minor);
760 if (rc == -1) return;
761 index += rc;
762 if (_patch > 0) {
763 rc = jio_snprintf(&buffer[index], buflen - index, ".%d.%d", _security, _patch);
764 if (rc == -1) return;
765 index += rc;
766 } else if (_security > 0) {
767 rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _security);
768 if (rc == -1) return;
769 index += rc;
770 }
771 if (_build > 0) {
772 rc = jio_snprintf(&buffer[index], buflen - index, "+%d", _build);
773 if (rc == -1) return;
774 index += rc;
775 }
776 }
777 }