1 /* 2 * Copyright (c) 1997, 2024, 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 "cds/cds_globals.hpp" 27 #include "cds/cdsConfig.hpp" 28 #include "cds/classListWriter.hpp" 29 #include "cds/classPreloader.hpp" 30 #include "cds/dynamicArchive.hpp" 31 #include "cds/methodProfiler.hpp" 32 #include "cds/metaspaceShared.hpp" 33 #include "classfile/classLoader.hpp" 34 #include "classfile/classLoaderDataGraph.hpp" 35 #include "classfile/javaClasses.hpp" 36 #include "classfile/stringTable.hpp" 37 #include "classfile/symbolTable.hpp" 38 #include "classfile/systemDictionary.hpp" 39 #include "code/codeCache.hpp" 40 #include "code/SCCache.hpp" 41 #include "compiler/compilationMemoryStatistic.hpp" 42 #include "compiler/compilationPolicy.hpp" 43 #include "compiler/compileBroker.hpp" 44 #include "compiler/compilerOracle.hpp" 45 #include "gc/shared/collectedHeap.hpp" 46 #include "gc/shared/stringdedup/stringDedup.hpp" 47 #include "interpreter/bytecodeHistogram.hpp" 48 #include "interpreter/interpreterRuntime.hpp" 49 #include "jfr/jfrEvents.hpp" 50 #include "jfr/support/jfrThreadId.hpp" 51 #include "jvm.h" 52 #include "logging/log.hpp" 53 #include "logging/logStream.hpp" 54 #include "memory/metaspaceUtils.hpp" 55 #include "memory/oopFactory.hpp" 56 #include "memory/resourceArea.hpp" 57 #include "memory/universe.hpp" 58 #include "nmt/memMapPrinter.hpp" 59 #include "nmt/memTracker.hpp" 60 #include "oops/constantPool.hpp" 61 #include "oops/generateOopMap.hpp" 62 #include "oops/instanceKlass.hpp" 63 #include "oops/instanceOop.hpp" 64 #include "oops/klassVtable.hpp" 65 #include "oops/method.hpp" 66 #include "oops/objArrayOop.hpp" 67 #include "oops/oop.inline.hpp" 68 #include "oops/symbol.hpp" 69 #include "oops/trainingData.hpp" 70 #include "prims/jvmtiAgentList.hpp" 71 #include "prims/jvmtiExport.hpp" 72 #include "prims/methodHandles.hpp" 73 #include "runtime/continuation.hpp" 74 #include "runtime/deoptimization.hpp" 75 #include "runtime/flags/flagSetting.hpp" 76 #include "runtime/globals_extension.hpp" 77 #include "runtime/handles.inline.hpp" 78 #include "runtime/init.hpp" 79 #include "runtime/interfaceSupport.inline.hpp" 80 #include "runtime/java.hpp" 81 #include "runtime/javaThread.hpp" 82 #include "runtime/sharedRuntime.hpp" 83 #include "runtime/statSampler.hpp" 84 #include "runtime/stubRoutines.hpp" 85 #include "runtime/task.hpp" 86 #include "runtime/threads.hpp" 87 #include "runtime/timer.hpp" 88 #include "runtime/trimNativeHeap.hpp" 89 #include "runtime/vmOperations.hpp" 90 #include "runtime/vmThread.hpp" 91 #include "runtime/vm_version.hpp" 92 #include "sanitizers/leak.hpp" 93 #include "utilities/dtrace.hpp" 94 #include "utilities/events.hpp" 95 #include "utilities/globalDefinitions.hpp" 96 #include "utilities/macros.hpp" 97 #include "utilities/vmError.hpp" 98 #ifdef COMPILER1 99 #include "c1/c1_Compiler.hpp" 100 #include "c1/c1_Runtime1.hpp" 101 #endif 102 #ifdef COMPILER2 103 #include "code/compiledIC.hpp" 104 #include "opto/compile.hpp" 105 #include "opto/indexSet.hpp" 106 #include "opto/runtime.hpp" 107 #endif 108 #if INCLUDE_JFR 109 #include "jfr/jfr.hpp" 110 #endif 111 #if INCLUDE_JVMCI 112 #include "jvmci/jvmci.hpp" 113 #endif 114 115 GrowableArray<Method*>* collected_profiled_methods; 116 117 static int compare_methods(Method** a, Method** b) { 118 // compiled_invocation_count() returns int64_t, forcing the entire expression 119 // to be evaluated as int64_t. Overflow is not an issue. 120 int64_t diff = (((*b)->invocation_count() + (*b)->compiled_invocation_count()) 121 - ((*a)->invocation_count() + (*a)->compiled_invocation_count())); 122 return (diff < 0) ? -1 : (diff > 0) ? 1 : 0; 123 } 124 125 static void collect_profiled_methods(Method* m) { 126 Thread* thread = Thread::current(); 127 methodHandle mh(thread, m); 128 if ((m->method_data() != nullptr) && 129 (PrintMethodData || CompilerOracle::should_print(mh))) { 130 collected_profiled_methods->push(m); 131 } 132 } 133 134 static void print_method_profiling_data() { 135 if ((ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) && 136 (PrintMethodData || CompilerOracle::should_print_methods())) { 137 ResourceMark rm; 138 collected_profiled_methods = new GrowableArray<Method*>(1024); 139 SystemDictionary::methods_do(collect_profiled_methods); 140 collected_profiled_methods->sort(&compare_methods); 141 142 int count = collected_profiled_methods->length(); 143 int total_size = 0; 144 if (count > 0) { 145 for (int index = 0; index < count; index++) { 146 Method* m = collected_profiled_methods->at(index); 147 148 // Instead of taking tty lock, we collect all lines into a string stream 149 // and then print them all at once. 150 ResourceMark rm2; 151 stringStream ss; 152 153 ss.print_cr("------------------------------------------------------------------------"); 154 m->print_invocation_count(&ss); 155 ss.print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); 156 ss.cr(); 157 // Dump data on parameters if any 158 if (m->method_data() != nullptr && m->method_data()->parameters_type_data() != nullptr) { 159 ss.fill_to(2); 160 m->method_data()->parameters_type_data()->print_data_on(&ss); 161 } 162 m->print_codes_on(&ss); 163 tty->print("%s", ss.as_string()); // print all at once 164 total_size += m->method_data()->size_in_bytes(); 165 } 166 tty->print_cr("------------------------------------------------------------------------"); 167 tty->print_cr("Total MDO size: %d bytes", total_size); 168 } 169 } 170 } 171 172 void perf_jvm_print_on(outputStream* st); 173 174 void log_vm_init_stats(bool use_tty) { 175 LogStreamHandle(Info, init) log; 176 if (log.is_enabled()) { 177 outputStream* out = use_tty ? tty : &log; 178 SharedRuntime::print_counters_on(out); 179 LogStreamHandle(Info, perf, class, link) log2; 180 outputStream* out2 = use_tty ? tty : &log2; 181 ClassLoader::print_counters(out2); 182 ClassPreloader::print_counters(); 183 out->cr(); 184 // FIXME: intermittent crashes 185 // if (CountBytecodesPerThread) { 186 // log.print_cr("Thread info:"); 187 // class PrintThreadInfo : public ThreadClosure { 188 // outputStream* _st; 189 // public: 190 // PrintThreadInfo(outputStream* st) : ThreadClosure(), _st(st) {} 191 // void do_thread(Thread* thread) { 192 // JavaThread* jt = JavaThread::cast(thread); 193 // if (jt->bc_counter_value() > 0) { 194 // _st->print_cr(" Thread " INTPTR_FORMAT ": %ld bytecodes executed (clinit: %ld)", 195 // p2i(jt), /*jt->name(),*/ jt->bc_counter_value(), jt->clinit_bc_counter_value()); 196 // } 197 // } 198 // }; 199 // PrintThreadInfo cl(&log); 200 // Threads::java_threads_do(&cl); 201 // } 202 // log.cr(); 203 out->print_cr("Deoptimization events: "); 204 Deoptimization::print_statistics_on(out); 205 out->cr(); 206 207 out->print("Compilation statistics: "); 208 CompileBroker::print_statistics_on(out); 209 out->cr(); 210 211 { 212 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 213 out->print("Code cache statistics: "); 214 CodeCache::print_nmethod_statistics_on(out); 215 out->cr(); 216 } 217 218 if (SCCache::is_on_for_read()) { 219 out->print_cr("Startup Code Cache: "); 220 SCCache::print_statistics_on(out); 221 out->cr(); 222 SCCache::print_timers_on(out); 223 } 224 225 VMThread::print_counters_on(out); 226 out->cr(); 227 MutexLockerImpl::print_counters_on(out); 228 out->cr(); 229 out->print("Runtime events for thread \"main\""); 230 if (ProfileRuntimeCalls) { 231 out->print_cr(" (%d nested events):", ProfileVMCallContext::nested_runtime_calls_count()); 232 233 Runtime1::print_counters_on(out); 234 OptoRuntime::print_counters_on(out); 235 InterpreterRuntime::print_counters_on(out); 236 Deoptimization::print_counters_on(out); 237 } else { 238 out->print_cr(": no info (%s is disabled)", (UsePerfData ? "ProfileRuntimeCalls" : "UsePerfData")); 239 } 240 out->cr(); 241 perf_jvm_print_on(out); 242 out->cr(); 243 MethodHandles::print_counters_on(out); 244 } 245 } 246 247 void print_bytecode_count() { 248 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 249 tty->print_cr("[BytecodeCounter::counter_value = %ld]", BytecodeCounter::counter_value()); 250 } 251 } 252 253 #ifndef PRODUCT 254 255 // Statistics printing (method invocation histogram) 256 257 GrowableArray<Method*>* collected_invoked_methods; 258 259 static void collect_invoked_methods(Method* m) { 260 if (m->invocation_count() + m->compiled_invocation_count() >= 1) { 261 collected_invoked_methods->push(m); 262 } 263 } 264 265 266 // Invocation count accumulators should be unsigned long to shift the 267 // overflow border. Longer-running workloads tend to create invocation 268 // counts which already overflow 32-bit counters for individual methods. 269 static void print_method_invocation_histogram() { 270 ResourceMark rm; 271 collected_invoked_methods = new GrowableArray<Method*>(1024); 272 SystemDictionary::methods_do(collect_invoked_methods); 273 collected_invoked_methods->sort(&compare_methods); 274 // 275 tty->cr(); 276 tty->print_cr("Histogram Over Method Invocation Counters (cutoff = " INTX_FORMAT "):", MethodHistogramCutoff); 277 tty->cr(); 278 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); 279 uint64_t total = 0, 280 int_total = 0, 281 comp_total = 0, 282 special_total= 0, 283 static_total = 0, 284 final_total = 0, 285 synch_total = 0, 286 native_total = 0, 287 access_total = 0; 288 for (int index = 0; index < collected_invoked_methods->length(); index++) { 289 // Counter values returned from getter methods are signed int. 290 // To shift the overflow border by a factor of two, we interpret 291 // them here as unsigned long. A counter can't be negative anyway. 292 Method* m = collected_invoked_methods->at(index); 293 uint64_t iic = (uint64_t)m->invocation_count(); 294 uint64_t cic = (uint64_t)m->compiled_invocation_count(); 295 if ((iic + cic) >= (uint64_t)MethodHistogramCutoff) m->print_invocation_count(tty); 296 int_total += iic; 297 comp_total += cic; 298 if (m->is_final()) final_total += iic + cic; 299 if (m->is_static()) static_total += iic + cic; 300 if (m->is_synchronized()) synch_total += iic + cic; 301 if (m->is_native()) native_total += iic + cic; 302 if (m->is_accessor()) access_total += iic + cic; 303 } 304 tty->cr(); 305 total = int_total + comp_total; 306 special_total = final_total + static_total +synch_total + native_total + access_total; 307 tty->print_cr("Invocations summary for %d methods:", collected_invoked_methods->length()); 308 double total_div = (double)total; 309 tty->print_cr("\t" UINT64_FORMAT_W(12) " (100%%) total", total); 310 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- interpreted", int_total, 100.0 * (double)int_total / total_div); 311 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- compiled", comp_total, 100.0 * (double)comp_total / total_div); 312 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- special methods (interpreted and compiled)", 313 special_total, 100.0 * (double)special_total/ total_div); 314 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- synchronized",synch_total, 100.0 * (double)synch_total / total_div); 315 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- final", final_total, 100.0 * (double)final_total / total_div); 316 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- static", static_total, 100.0 * (double)static_total / total_div); 317 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- native", native_total, 100.0 * (double)native_total / total_div); 318 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- accessor", access_total, 100.0 * (double)access_total / total_div); 319 tty->cr(); 320 SharedRuntime::print_call_statistics_on(tty); 321 } 322 323 #else 324 325 static void print_method_invocation_histogram() {} 326 327 #endif // PRODUCT 328 329 330 // General statistics printing (profiling ...) 331 void print_statistics() { 332 if (ReplayTraining && PrintTrainingInfo) { 333 TrainingData::print_archived_training_data_on(tty); 334 } 335 if (CITime) { 336 CompileBroker::print_times(); 337 } 338 339 #ifdef COMPILER1 340 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { 341 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); 342 Runtime1::print_statistics_on(tty); 343 SharedRuntime::print_statistics(); 344 } 345 #endif /* COMPILER1 */ 346 347 #ifdef COMPILER2 348 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { 349 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); 350 Compile::print_statistics(); 351 Deoptimization::print_statistics(); 352 #ifndef COMPILER1 353 SharedRuntime::print_statistics(); 354 #endif //COMPILER1 355 } 356 357 if (PrintLockStatistics) { 358 OptoRuntime::print_named_counters(); 359 } 360 #ifdef ASSERT 361 if (CollectIndexSetStatistics) { 362 IndexSet::print_statistics(); 363 } 364 #endif // ASSERT 365 #else // COMPILER2 366 #if INCLUDE_JVMCI 367 #ifndef COMPILER1 368 if ((TraceDeoptimization || LogVMOutput || LogCompilation) && UseCompiler) { 369 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && TraceDeoptimization); 370 Deoptimization::print_statistics(); 371 SharedRuntime::print_statistics(); 372 } 373 #endif // COMPILER1 374 #endif // INCLUDE_JVMCI 375 #endif // COMPILER2 376 377 if (PrintNMethodStatistics) { 378 nmethod::print_statistics(); 379 } 380 if (CountCompiledCalls) { 381 print_method_invocation_histogram(); 382 } 383 384 print_method_profiling_data(); 385 386 if (TimeOopMap) { 387 GenerateOopMap::print_time(); 388 } 389 if (PrintSymbolTableSizeHistogram) { 390 SymbolTable::print_histogram(); 391 } 392 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 393 BytecodeCounter::print(); 394 } 395 if (PrintBytecodePairHistogram) { 396 BytecodePairHistogram::print(); 397 } 398 399 if (PrintCodeCache) { 400 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 401 CodeCache::print(); 402 } 403 404 // CodeHeap State Analytics. 405 if (PrintCodeHeapAnalytics) { 406 CompileBroker::print_heapinfo(nullptr, "all", 4096); // details 407 } 408 409 LogStreamHandle(Debug, codecache, nmethod) log; 410 if (log.is_enabled()) { 411 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 412 CodeCache::print_nmethods_on(&log); 413 } 414 415 #ifndef PRODUCT 416 if (PrintCodeCache2) { 417 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 418 CodeCache::print_internals(); 419 } 420 #endif 421 422 if (VerifyOops && Verbose) { 423 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); 424 } 425 426 print_bytecode_count(); 427 428 if (PrintSystemDictionaryAtExit) { 429 ResourceMark rm; 430 MutexLocker mcld(ClassLoaderDataGraph_lock); 431 SystemDictionary::print(); 432 } 433 434 if (PrintClassLoaderDataGraphAtExit) { 435 ResourceMark rm; 436 MutexLocker mcld(ClassLoaderDataGraph_lock); 437 ClassLoaderDataGraph::print(); 438 } 439 440 // Native memory tracking data 441 if (PrintNMTStatistics) { 442 MemTracker::final_report(tty); 443 } 444 445 if (PrintMetaspaceStatisticsAtExit) { 446 MetaspaceUtils::print_basic_report(tty, 0); 447 } 448 449 if (CompilerOracle::should_print_final_memstat_report()) { 450 CompilationMemoryStatistic::print_all_by_size(tty, false, 0); 451 } 452 453 ThreadsSMRSupport::log_statistics(); 454 455 log_vm_init_stats(true /* use_tty */); 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, bool halt) { 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 Events::log(thread, "Before exit entered"); 468 469 // Note: don't use a Mutex to guard the entire before_exit(), as 470 // JVMTI post_thread_end_event and post_vm_death_event will run native code. 471 // A CAS or OSMutex would work just fine but then we need to manipulate 472 // thread state for Safepoint. Here we use Monitor wait() and notify_all() 473 // for synchronization. 474 { MonitorLocker ml(BeforeExit_lock); 475 switch (_before_exit_status) { 476 case BEFORE_EXIT_NOT_RUN: 477 _before_exit_status = BEFORE_EXIT_RUNNING; 478 break; 479 case BEFORE_EXIT_RUNNING: 480 while (_before_exit_status == BEFORE_EXIT_RUNNING) { 481 ml.wait(); 482 } 483 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); 484 return; 485 case BEFORE_EXIT_DONE: 486 // need block to avoid SS compiler bug 487 { 488 return; 489 } 490 } 491 } 492 493 // At this point only one thread is executing this logic. Any other threads 494 // attempting to invoke before_exit() will wait above and return early once 495 // this thread finishes before_exit(). 496 497 // Do not add any additional shutdown logic between the above mutex logic and 498 // leak sanitizer logic below. Any additional shutdown code which performs some 499 // cleanup should be added after the leak sanitizer logic below. 500 501 #ifdef LEAK_SANITIZER 502 // If we are built with LSan, we need to perform leak checking. If we are 503 // terminating normally, not halting and no VM error, we perform a normal 504 // leak check which terminates if leaks are found. If we are not terminating 505 // normally, halting or VM error, we perform a recoverable leak check which 506 // prints leaks but will not terminate. 507 if (!halt && !VMError::is_error_reported()) { 508 LSAN_DO_LEAK_CHECK(); 509 } else { 510 // Ignore the return value. 511 static_cast<void>(LSAN_DO_RECOVERABLE_LEAK_CHECK()); 512 } 513 #endif 514 515 MethodProfiler::process_method_hotness(); 516 517 // Actual shutdown logic begins here. 518 519 #if INCLUDE_JVMCI 520 if (EnableJVMCI) { 521 JVMCI::shutdown(thread); 522 } 523 #endif 524 525 #if INCLUDE_CDS 526 ClassListWriter::write_resolved_constants(); 527 ClassListWriter::write_reflection_data(); 528 ClassListWriter::write_loader_negative_lookup_cache(); 529 // Dynamic CDS dumping must happen whilst we can still reliably 530 // run Java code. 531 if (CDSConfig::is_dumping_preimage_static_archive()) { 532 // Creating the hotspot.cds.preimage file 533 MetaspaceShared::preload_and_dump(thread); 534 } else { 535 DynamicArchive::dump_at_exit(thread, ArchiveClassesAtExit); 536 } 537 assert(!thread->has_pending_exception(), "must be"); 538 #endif 539 540 SCCache::close(); // Write final data and close archive 541 542 // Hang forever on exit if we're reporting an error. 543 if (ShowMessageBoxOnError && VMError::is_error_reported()) { 544 os::infinite_sleep(); 545 } 546 547 EventThreadEnd event; 548 if (event.should_commit()) { 549 event.set_thread(JFR_JVM_THREAD_ID(thread)); 550 event.commit(); 551 } 552 553 JFR_ONLY(Jfr::on_vm_shutdown(false, halt);) 554 555 // Stop the WatcherThread. We do this before disenrolling various 556 // PeriodicTasks to reduce the likelihood of races. 557 WatcherThread::stop(); 558 559 // shut down the StatSampler task 560 StatSampler::disengage(); 561 StatSampler::destroy(); 562 563 NativeHeapTrimmer::cleanup(); 564 565 // Stop concurrent GC threads 566 Universe::heap()->stop(); 567 568 // Print GC/heap related information. 569 Log(gc, heap, exit) log; 570 if (log.is_info()) { 571 ResourceMark rm; 572 LogStream ls_info(log.info()); 573 Universe::print_on(&ls_info); 574 if (log.is_trace()) { 575 LogStream ls_trace(log.trace()); 576 MutexLocker mcld(ClassLoaderDataGraph_lock); 577 ClassLoaderDataGraph::print_on(&ls_trace); 578 } 579 } 580 581 if (PrintBytecodeHistogram) { 582 BytecodeHistogram::print(PrintBytecodeHistogramCutoff); 583 } 584 585 #ifdef LINUX 586 if (DumpPerfMapAtExit) { 587 CodeCache::write_perf_map(); 588 } 589 if (PrintMemoryMapAtExit) { 590 MemMapPrinter::print_all_mappings(tty); 591 } 592 #endif 593 594 if (JvmtiExport::should_post_thread_life()) { 595 JvmtiExport::post_thread_end(thread); 596 } 597 598 // Always call even when there are not JVMTI environments yet, since environments 599 // may be attached late and JVMTI must track phases of VM execution 600 JvmtiExport::post_vm_death(); 601 JvmtiAgentList::unload_agents(); 602 603 // Terminate the signal thread 604 // Note: we don't wait until it actually dies. 605 os::terminate_signal_thread(); 606 607 if (VerifyTrainingData) { 608 EXCEPTION_MARK; 609 CompilationPolicy::replay_training_at_init(true, THREAD); // implies TrainingData::verify() 610 } 611 612 print_statistics(); 613 Universe::heap()->print_tracing_info(); 614 615 { MutexLocker ml(BeforeExit_lock); 616 _before_exit_status = BEFORE_EXIT_DONE; 617 BeforeExit_lock->notify_all(); 618 } 619 620 if (VerifyStringTableAtExit) { 621 size_t fail_cnt = StringTable::verify_and_compare_entries(); 622 if (fail_cnt != 0) { 623 tty->print_cr("ERROR: fail_cnt=" SIZE_FORMAT, fail_cnt); 624 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); 625 } 626 } 627 628 #undef BEFORE_EXIT_NOT_RUN 629 #undef BEFORE_EXIT_RUNNING 630 #undef BEFORE_EXIT_DONE 631 } 632 633 void vm_exit(int code) { 634 Thread* thread = 635 ThreadLocalStorage::is_initialized() ? Thread::current_or_null() : nullptr; 636 if (thread == nullptr) { 637 // very early initialization failure -- just exit 638 vm_direct_exit(code); 639 } 640 641 // We'd like to add an entry to the XML log to show that the VM is 642 // terminating, but we can't safely do that here. The logic to make 643 // XML termination logging safe is tied to the termination of the 644 // VMThread, and it doesn't terminate on this exit path. See 8222534. 645 646 if (VMThread::vm_thread() != nullptr) { 647 if (thread->is_Java_thread()) { 648 // We must be "in_vm" for the code below to work correctly. 649 // Historically there must have been some exit path for which 650 // that was not the case and so we set it explicitly - even 651 // though we no longer know what that path may be. 652 JavaThread::cast(thread)->set_thread_state(_thread_in_vm); 653 } 654 655 // Fire off a VM_Exit operation to bring VM to a safepoint and exit 656 VM_Exit op(code); 657 658 // 4945125 The vm thread comes to a safepoint during exit. 659 // GC vm_operations can get caught at the safepoint, and the 660 // heap is unparseable if they are caught. Grab the Heap_lock 661 // to prevent this. The GC vm_operations will not be able to 662 // queue until after we release it, but we never do that as we 663 // are terminating the VM process. 664 MutexLocker ml(Heap_lock); 665 666 VMThread::execute(&op); 667 // should never reach here; but in case something wrong with VM Thread. 668 vm_direct_exit(code); 669 } else { 670 // VM thread is gone, just exit 671 vm_direct_exit(code); 672 } 673 ShouldNotReachHere(); 674 } 675 676 void notify_vm_shutdown() { 677 // For now, just a dtrace probe. 678 HOTSPOT_VM_SHUTDOWN(); 679 } 680 681 void vm_direct_exit(int code) { 682 notify_vm_shutdown(); 683 os::wait_for_keypress_at_exit(); 684 os::exit(code); 685 } 686 687 void vm_direct_exit(int code, const char* message) { 688 if (message != nullptr) { 689 tty->print_cr("%s", message); 690 } 691 vm_direct_exit(code); 692 } 693 694 static void vm_perform_shutdown_actions() { 695 if (is_init_completed()) { 696 Thread* thread = Thread::current_or_null(); 697 if (thread != nullptr && thread->is_Java_thread()) { 698 // We are leaving the VM, set state to native (in case any OS exit 699 // handlers call back to the VM) 700 JavaThread* jt = JavaThread::cast(thread); 701 // Must always be walkable or have no last_Java_frame when in 702 // thread_in_native 703 jt->frame_anchor()->make_walkable(); 704 jt->set_thread_state(_thread_in_native); 705 } 706 } 707 notify_vm_shutdown(); 708 } 709 710 void vm_shutdown() 711 { 712 vm_perform_shutdown_actions(); 713 os::wait_for_keypress_at_exit(); 714 os::shutdown(); 715 } 716 717 void vm_abort(bool dump_core) { 718 vm_perform_shutdown_actions(); 719 os::wait_for_keypress_at_exit(); 720 721 // Flush stdout and stderr before abort. 722 fflush(stdout); 723 fflush(stderr); 724 725 os::abort(dump_core); 726 ShouldNotReachHere(); 727 } 728 729 static void vm_notify_during_cds_dumping(const char* error, const char* message) { 730 if (error != nullptr) { 731 tty->print_cr("Error occurred during CDS dumping"); 732 tty->print("%s", error); 733 if (message != nullptr) { 734 tty->print_cr(": %s", message); 735 } 736 else { 737 tty->cr(); 738 } 739 } 740 } 741 742 void vm_exit_during_cds_dumping(const char* error, const char* message) { 743 vm_notify_during_cds_dumping(error, message); 744 745 // Failure during CDS dumping, we don't want to dump core 746 vm_abort(false); 747 } 748 749 static void vm_notify_during_shutdown(const char* error, const char* message) { 750 if (error != nullptr) { 751 tty->print_cr("Error occurred during initialization of VM"); 752 tty->print("%s", error); 753 if (message != nullptr) { 754 tty->print_cr(": %s", message); 755 } 756 else { 757 tty->cr(); 758 } 759 } 760 if (ShowMessageBoxOnError && WizardMode) { 761 fatal("Error occurred during initialization of VM"); 762 } 763 } 764 765 void vm_exit_during_initialization() { 766 vm_notify_during_shutdown(nullptr, nullptr); 767 768 // Failure during initialization, we don't want to dump core 769 vm_abort(false); 770 } 771 772 void vm_exit_during_initialization(Handle exception) { 773 tty->print_cr("Error occurred during initialization of VM"); 774 // If there are exceptions on this thread it must be cleared 775 // first and here. Any future calls to EXCEPTION_MARK requires 776 // that no pending exceptions exist. 777 JavaThread* THREAD = JavaThread::current(); // can't be null 778 if (HAS_PENDING_EXCEPTION) { 779 CLEAR_PENDING_EXCEPTION; 780 } 781 java_lang_Throwable::print_stack_trace(exception, tty); 782 tty->cr(); 783 vm_notify_during_shutdown(nullptr, nullptr); 784 785 // Failure during initialization, we don't want to dump core 786 vm_abort(false); 787 } 788 789 void vm_exit_during_initialization(Symbol* ex, const char* message) { 790 ResourceMark rm; 791 vm_notify_during_shutdown(ex->as_C_string(), message); 792 793 // Failure during initialization, we don't want to dump core 794 vm_abort(false); 795 } 796 797 void vm_exit_during_initialization(const char* error, const char* message) { 798 vm_notify_during_shutdown(error, message); 799 800 // Failure during initialization, we don't want to dump core 801 vm_abort(false); 802 } 803 804 void vm_shutdown_during_initialization(const char* error, const char* message) { 805 vm_notify_during_shutdown(error, message); 806 vm_shutdown(); 807 } 808 809 JDK_Version JDK_Version::_current; 810 const char* JDK_Version::_java_version; 811 const char* JDK_Version::_runtime_name; 812 const char* JDK_Version::_runtime_version; 813 const char* JDK_Version::_runtime_vendor_version; 814 const char* JDK_Version::_runtime_vendor_vm_bug_url; 815 816 void JDK_Version::initialize() { 817 assert(!_current.is_valid(), "Don't initialize twice"); 818 819 int major = VM_Version::vm_major_version(); 820 int minor = VM_Version::vm_minor_version(); 821 int security = VM_Version::vm_security_version(); 822 int build = VM_Version::vm_build_number(); 823 int patch = VM_Version::vm_patch_version(); 824 _current = JDK_Version(major, minor, security, patch, build); 825 } 826 827 void JDK_Version_init() { 828 JDK_Version::initialize(); 829 } 830 831 static int64_t encode_jdk_version(const JDK_Version& v) { 832 return 833 ((int64_t)v.major_version() << (BitsPerByte * 4)) | 834 ((int64_t)v.minor_version() << (BitsPerByte * 3)) | 835 ((int64_t)v.security_version() << (BitsPerByte * 2)) | 836 ((int64_t)v.patch_version() << (BitsPerByte * 1)) | 837 ((int64_t)v.build_number() << (BitsPerByte * 0)); 838 } 839 840 int JDK_Version::compare(const JDK_Version& other) const { 841 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); 842 uint64_t e = encode_jdk_version(*this); 843 uint64_t o = encode_jdk_version(other); 844 return (e > o) ? 1 : ((e == o) ? 0 : -1); 845 } 846 847 /* See JEP 223 */ 848 void JDK_Version::to_string(char* buffer, size_t buflen) const { 849 assert(buffer && buflen > 0, "call with useful buffer"); 850 size_t index = 0; 851 852 if (!is_valid()) { 853 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); 854 } else { 855 int rc = jio_snprintf( 856 &buffer[index], buflen - index, "%d.%d", _major, _minor); 857 if (rc == -1) return; 858 index += rc; 859 if (_patch > 0) { 860 rc = jio_snprintf(&buffer[index], buflen - index, ".%d.%d", _security, _patch); 861 if (rc == -1) return; 862 index += rc; 863 } else if (_security > 0) { 864 rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _security); 865 if (rc == -1) return; 866 index += rc; 867 } 868 if (_build > 0) { 869 rc = jio_snprintf(&buffer[index], buflen - index, "+%d", _build); 870 if (rc == -1) return; 871 index += rc; 872 } 873 } 874 } --- EOF ---