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/aotLinkedClassBulkLoader.hpp" 27 #include "cds/cds_globals.hpp" 28 #include "cds/cdsConfig.hpp" 29 #include "cds/classListWriter.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() { 175 LogStreamHandle(Info, init) log; 176 if (log.is_enabled()) { 177 SharedRuntime::print_counters_on(&log); 178 ClassLoader::print_counters(&log); 179 AOTLinkedClassBulkLoader::print_counters_on(&log); 180 log.cr(); 181 // FIXME: intermittent crashes 182 // if (CountBytecodesPerThread) { 183 // log.print_cr("Thread info:"); 184 // class PrintThreadInfo : public ThreadClosure { 185 // outputStream* _st; 186 // public: 187 // PrintThreadInfo(outputStream* st) : ThreadClosure(), _st(st) {} 188 // void do_thread(Thread* thread) { 189 // JavaThread* jt = JavaThread::cast(thread); 190 // if (jt->bc_counter_value() > 0) { 191 // _st->print_cr(" Thread " INTPTR_FORMAT ": %ld bytecodes executed (clinit: %ld)", 192 // p2i(jt), /*jt->name(),*/ jt->bc_counter_value(), jt->clinit_bc_counter_value()); 193 // } 194 // } 195 // }; 196 // PrintThreadInfo cl(&log); 197 // Threads::java_threads_do(&cl); 198 // } 199 // log.cr(); 200 log.print_cr("Deoptimization events: "); 201 Deoptimization::print_statistics_on(&log); 202 log.cr(); 203 204 log.print("Compilation statistics: "); 205 CompileBroker::print_statistics_on(&log); 206 log.cr(); 207 208 { 209 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 210 log.print("Code cache statistics: "); 211 CodeCache::print_nmethod_statistics_on(&log); 212 log.cr(); 213 } 214 215 if (SCCache::is_on_for_read()) { 216 log.print_cr("Startup Code Cache: "); 217 SCCache::print_statistics_on(&log); 218 log.cr(); 219 SCCache::print_timers_on(&log); 220 } 221 222 VMThread::print_counters_on(&log); 223 log.cr(); 224 MutexLockerImpl::print_counters_on(&log); 225 log.cr(); 226 log.print("Runtime events for thread \"main\""); 227 if (ProfileRuntimeCalls) { 228 log.print_cr(" (%d nested events):", ProfileVMCallContext::nested_runtime_calls_count()); 229 230 InterpreterRuntime::print_counters_on(&log); 231 #ifdef COMPILER1 232 Runtime1::print_counters_on(&log); 233 #endif 234 #ifdef COMPILER2 235 OptoRuntime::print_counters_on(&log); 236 Deoptimization::print_counters_on(&log); 237 #endif 238 } else { 239 log.print_cr(": no info (%s is disabled)", (UsePerfData ? "ProfileRuntimeCalls" : "UsePerfData")); 240 } 241 log.cr(); 242 perf_jvm_print_on(&log); 243 log.cr(); 244 MethodHandles::print_counters_on(&log); 245 } 246 } 247 248 void print_bytecode_count() { 249 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 250 tty->print_cr("[BytecodeCounter::counter_value = " JLONG_FORMAT "]", BytecodeCounter::counter_value()); 251 } 252 } 253 254 #ifndef PRODUCT 255 256 // Statistics printing (method invocation histogram) 257 258 GrowableArray<Method*>* collected_invoked_methods; 259 260 static void collect_invoked_methods(Method* m) { 261 if (m->invocation_count() + m->compiled_invocation_count() >= 1) { 262 collected_invoked_methods->push(m); 263 } 264 } 265 266 267 // Invocation count accumulators should be unsigned long to shift the 268 // overflow border. Longer-running workloads tend to create invocation 269 // counts which already overflow 32-bit counters for individual methods. 270 static void print_method_invocation_histogram() { 271 ResourceMark rm; 272 collected_invoked_methods = new GrowableArray<Method*>(1024); 273 SystemDictionary::methods_do(collect_invoked_methods); 274 collected_invoked_methods->sort(&compare_methods); 275 // 276 tty->cr(); 277 tty->print_cr("Histogram Over Method Invocation Counters (cutoff = " INTX_FORMAT "):", MethodHistogramCutoff); 278 tty->cr(); 279 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); 280 uint64_t total = 0, 281 int_total = 0, 282 comp_total = 0, 283 special_total= 0, 284 static_total = 0, 285 final_total = 0, 286 synch_total = 0, 287 native_total = 0, 288 access_total = 0; 289 for (int index = 0; index < collected_invoked_methods->length(); index++) { 290 // Counter values returned from getter methods are signed int. 291 // To shift the overflow border by a factor of two, we interpret 292 // them here as unsigned long. A counter can't be negative anyway. 293 Method* m = collected_invoked_methods->at(index); 294 uint64_t iic = (uint64_t)m->invocation_count(); 295 uint64_t cic = (uint64_t)m->compiled_invocation_count(); 296 if ((iic + cic) >= (uint64_t)MethodHistogramCutoff) m->print_invocation_count(tty); 297 int_total += iic; 298 comp_total += cic; 299 if (m->is_final()) final_total += iic + cic; 300 if (m->is_static()) static_total += iic + cic; 301 if (m->is_synchronized()) synch_total += iic + cic; 302 if (m->is_native()) native_total += iic + cic; 303 if (m->is_accessor()) access_total += iic + cic; 304 } 305 tty->cr(); 306 total = int_total + comp_total; 307 special_total = final_total + static_total +synch_total + native_total + access_total; 308 tty->print_cr("Invocations summary for %d methods:", collected_invoked_methods->length()); 309 double total_div = (double)total; 310 tty->print_cr("\t" UINT64_FORMAT_W(12) " (100%%) total", total); 311 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- interpreted", int_total, 100.0 * (double)int_total / total_div); 312 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- compiled", comp_total, 100.0 * (double)comp_total / total_div); 313 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- special methods (interpreted and compiled)", 314 special_total, 100.0 * (double)special_total/ total_div); 315 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- synchronized",synch_total, 100.0 * (double)synch_total / total_div); 316 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- final", final_total, 100.0 * (double)final_total / total_div); 317 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- static", static_total, 100.0 * (double)static_total / total_div); 318 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- native", native_total, 100.0 * (double)native_total / total_div); 319 tty->print_cr("\t" UINT64_FORMAT_W(12) " (%4.1f%%) |- accessor", access_total, 100.0 * (double)access_total / total_div); 320 tty->cr(); 321 SharedRuntime::print_call_statistics_on(tty); 322 } 323 324 #else 325 326 static void print_method_invocation_histogram() {} 327 328 #endif // PRODUCT 329 330 331 // General statistics printing (profiling ...) 332 void print_statistics() { 333 #if INCLUDE_CDS 334 if (ReplayTraining && PrintTrainingInfo) { 335 TrainingData::print_archived_training_data_on(tty); 336 } 337 #endif 338 if (CITime) { 339 CompileBroker::print_times(); 340 } 341 342 #ifdef COMPILER1 343 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { 344 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); 345 Runtime1::print_statistics_on(tty); 346 SharedRuntime::print_statistics(); 347 } 348 #endif /* COMPILER1 */ 349 350 #ifdef COMPILER2 351 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { 352 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); 353 Compile::print_statistics(); 354 Deoptimization::print_statistics(); 355 #ifndef COMPILER1 356 SharedRuntime::print_statistics(); 357 #endif //COMPILER1 358 } 359 360 if (PrintLockStatistics) { 361 OptoRuntime::print_named_counters(); 362 } 363 #ifdef ASSERT 364 if (CollectIndexSetStatistics) { 365 IndexSet::print_statistics(); 366 } 367 #endif // ASSERT 368 #else // COMPILER2 369 #if INCLUDE_JVMCI 370 #ifndef COMPILER1 371 if ((TraceDeoptimization || LogVMOutput || LogCompilation) && UseCompiler) { 372 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && TraceDeoptimization); 373 Deoptimization::print_statistics(); 374 SharedRuntime::print_statistics(); 375 } 376 #endif // COMPILER1 377 #endif // INCLUDE_JVMCI 378 #endif // COMPILER2 379 380 if (PrintNMethodStatistics) { 381 nmethod::print_statistics(); 382 } 383 if (CountCompiledCalls) { 384 print_method_invocation_histogram(); 385 } 386 387 print_method_profiling_data(); 388 389 if (TimeOopMap) { 390 GenerateOopMap::print_time(); 391 } 392 if (PrintSymbolTableSizeHistogram) { 393 SymbolTable::print_histogram(); 394 } 395 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 396 BytecodeCounter::print(); 397 } 398 if (PrintBytecodePairHistogram) { 399 BytecodePairHistogram::print(); 400 } 401 402 if (PrintCodeCache) { 403 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 404 CodeCache::print(); 405 } 406 407 // CodeHeap State Analytics. 408 if (PrintCodeHeapAnalytics) { 409 CompileBroker::print_heapinfo(nullptr, "all", 4096); // details 410 } 411 412 LogStreamHandle(Debug, codecache, nmethod) log; 413 if (log.is_enabled()) { 414 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 415 CodeCache::print_nmethods_on(&log); 416 } 417 418 #ifndef PRODUCT 419 if (PrintCodeCache2) { 420 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 421 CodeCache::print_internals(); 422 } 423 #endif 424 425 if (VerifyOops && Verbose) { 426 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); 427 } 428 429 print_bytecode_count(); 430 431 if (PrintSystemDictionaryAtExit) { 432 ResourceMark rm; 433 MutexLocker mcld(ClassLoaderDataGraph_lock); 434 SystemDictionary::print(); 435 } 436 437 if (PrintClassLoaderDataGraphAtExit) { 438 ResourceMark rm; 439 MutexLocker mcld(ClassLoaderDataGraph_lock); 440 ClassLoaderDataGraph::print(); 441 } 442 443 // Native memory tracking data 444 if (PrintNMTStatistics) { 445 MemTracker::final_report(tty); 446 } 447 448 if (PrintMetaspaceStatisticsAtExit) { 449 MetaspaceUtils::print_basic_report(tty, 0); 450 } 451 452 if (CompilerOracle::should_print_final_memstat_report()) { 453 CompilationMemoryStatistic::print_all_by_size(tty, false, 0); 454 } 455 456 ThreadsSMRSupport::log_statistics(); 457 458 log_vm_init_stats(); 459 460 if (log_is_enabled(Info, perf, class, link)) { 461 LogStreamHandle(Info, perf, class, link) log; 462 log.print_cr("At VM exit:"); 463 ClassLoader::print_counters(&log); 464 } 465 } 466 467 // Note: before_exit() can be executed only once, if more than one threads 468 // are trying to shutdown the VM at the same time, only one thread 469 // can run before_exit() and all other threads must wait. 470 void before_exit(JavaThread* thread, bool halt) { 471 #define BEFORE_EXIT_NOT_RUN 0 472 #define BEFORE_EXIT_RUNNING 1 473 #define BEFORE_EXIT_DONE 2 474 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; 475 476 Events::log(thread, "Before exit entered"); 477 478 // Note: don't use a Mutex to guard the entire before_exit(), as 479 // JVMTI post_thread_end_event and post_vm_death_event will run native code. 480 // A CAS or OSMutex would work just fine but then we need to manipulate 481 // thread state for Safepoint. Here we use Monitor wait() and notify_all() 482 // for synchronization. 483 { MonitorLocker ml(BeforeExit_lock); 484 switch (_before_exit_status) { 485 case BEFORE_EXIT_NOT_RUN: 486 _before_exit_status = BEFORE_EXIT_RUNNING; 487 break; 488 case BEFORE_EXIT_RUNNING: 489 while (_before_exit_status == BEFORE_EXIT_RUNNING) { 490 ml.wait(); 491 } 492 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); 493 return; 494 case BEFORE_EXIT_DONE: 495 // need block to avoid SS compiler bug 496 { 497 return; 498 } 499 } 500 } 501 502 // At this point only one thread is executing this logic. Any other threads 503 // attempting to invoke before_exit() will wait above and return early once 504 // this thread finishes before_exit(). 505 506 // Do not add any additional shutdown logic between the above mutex logic and 507 // leak sanitizer logic below. Any additional shutdown code which performs some 508 // cleanup should be added after the leak sanitizer logic below. 509 510 #ifdef LEAK_SANITIZER 511 // If we are built with LSan, we need to perform leak checking. If we are 512 // terminating normally, not halting and no VM error, we perform a normal 513 // leak check which terminates if leaks are found. If we are not terminating 514 // normally, halting or VM error, we perform a recoverable leak check which 515 // prints leaks but will not terminate. 516 if (!halt && !VMError::is_error_reported()) { 517 LSAN_DO_LEAK_CHECK(); 518 } else { 519 // Ignore the return value. 520 static_cast<void>(LSAN_DO_RECOVERABLE_LEAK_CHECK()); 521 } 522 #endif 523 524 #if INCLUDE_CDS 525 MethodProfiler::process_method_hotness(); 526 #endif 527 528 // Actual shutdown logic begins here. 529 530 #if INCLUDE_JVMCI 531 if (EnableJVMCI) { 532 JVMCI::shutdown(thread); 533 } 534 #endif 535 536 #if INCLUDE_CDS 537 ClassListWriter::write_resolved_constants(); 538 ClassListWriter::write_reflection_data(); 539 ClassListWriter::write_loader_negative_lookup_cache(); 540 // Dynamic CDS dumping must happen whilst we can still reliably 541 // run Java code. 542 if (CDSConfig::is_dumping_preimage_static_archive()) { 543 // Creating the hotspot.cds.preimage file 544 MetaspaceShared::preload_and_dump(thread); 545 } else { 546 DynamicArchive::dump_at_exit(thread, ArchiveClassesAtExit); 547 } 548 assert(!thread->has_pending_exception(), "must be"); 549 #endif 550 551 SCCache::close(); // Write final data and close archive 552 553 // Hang forever on exit if we're reporting an error. 554 if (ShowMessageBoxOnError && VMError::is_error_reported()) { 555 os::infinite_sleep(); 556 } 557 558 EventThreadEnd event; 559 if (event.should_commit()) { 560 event.set_thread(JFR_JVM_THREAD_ID(thread)); 561 event.commit(); 562 } 563 564 JFR_ONLY(Jfr::on_vm_shutdown(false, halt);) 565 566 // Stop the WatcherThread. We do this before disenrolling various 567 // PeriodicTasks to reduce the likelihood of races. 568 WatcherThread::stop(); 569 570 // shut down the StatSampler task 571 StatSampler::disengage(); 572 StatSampler::destroy(); 573 574 NativeHeapTrimmer::cleanup(); 575 576 // Stop concurrent GC threads 577 Universe::heap()->stop(); 578 579 // Print GC/heap related information. 580 Log(gc, heap, exit) log; 581 if (log.is_info()) { 582 ResourceMark rm; 583 LogStream ls_info(log.info()); 584 Universe::print_on(&ls_info); 585 if (log.is_trace()) { 586 LogStream ls_trace(log.trace()); 587 MutexLocker mcld(ClassLoaderDataGraph_lock); 588 ClassLoaderDataGraph::print_on(&ls_trace); 589 } 590 } 591 592 if (PrintBytecodeHistogram) { 593 BytecodeHistogram::print(PrintBytecodeHistogramCutoff); 594 } 595 596 #ifdef LINUX 597 if (DumpPerfMapAtExit) { 598 CodeCache::write_perf_map(nullptr, tty); 599 } 600 if (PrintMemoryMapAtExit) { 601 MemMapPrinter::print_all_mappings(tty); 602 } 603 #endif 604 605 if (JvmtiExport::should_post_thread_life()) { 606 JvmtiExport::post_thread_end(thread); 607 } 608 609 // Always call even when there are not JVMTI environments yet, since environments 610 // may be attached late and JVMTI must track phases of VM execution 611 JvmtiExport::post_vm_death(); 612 JvmtiAgentList::unload_agents(); 613 614 // Terminate the signal thread 615 // Note: we don't wait until it actually dies. 616 os::terminate_signal_thread(); 617 618 if (VerifyTrainingData) { 619 EXCEPTION_MARK; 620 CompilationPolicy::replay_training_at_init(true, THREAD); // implies TrainingData::verify() 621 } 622 623 print_statistics(); 624 Universe::heap()->print_tracing_info(); 625 626 { MutexLocker ml(BeforeExit_lock); 627 _before_exit_status = BEFORE_EXIT_DONE; 628 BeforeExit_lock->notify_all(); 629 } 630 631 if (VerifyStringTableAtExit) { 632 size_t fail_cnt = StringTable::verify_and_compare_entries(); 633 if (fail_cnt != 0) { 634 tty->print_cr("ERROR: fail_cnt=" SIZE_FORMAT, fail_cnt); 635 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); 636 } 637 } 638 639 #undef BEFORE_EXIT_NOT_RUN 640 #undef BEFORE_EXIT_RUNNING 641 #undef BEFORE_EXIT_DONE 642 } 643 644 void vm_exit(int code) { 645 Thread* thread = 646 ThreadLocalStorage::is_initialized() ? Thread::current_or_null() : nullptr; 647 if (thread == nullptr) { 648 // very early initialization failure -- just exit 649 vm_direct_exit(code); 650 } 651 652 // We'd like to add an entry to the XML log to show that the VM is 653 // terminating, but we can't safely do that here. The logic to make 654 // XML termination logging safe is tied to the termination of the 655 // VMThread, and it doesn't terminate on this exit path. See 8222534. 656 657 if (VMThread::vm_thread() != nullptr) { 658 if (thread->is_Java_thread()) { 659 // We must be "in_vm" for the code below to work correctly. 660 // Historically there must have been some exit path for which 661 // that was not the case and so we set it explicitly - even 662 // though we no longer know what that path may be. 663 JavaThread::cast(thread)->set_thread_state(_thread_in_vm); 664 } 665 666 // Fire off a VM_Exit operation to bring VM to a safepoint and exit 667 VM_Exit op(code); 668 669 // 4945125 The vm thread comes to a safepoint during exit. 670 // GC vm_operations can get caught at the safepoint, and the 671 // heap is unparseable if they are caught. Grab the Heap_lock 672 // to prevent this. The GC vm_operations will not be able to 673 // queue until after we release it, but we never do that as we 674 // are terminating the VM process. 675 MutexLocker ml(Heap_lock); 676 677 VMThread::execute(&op); 678 // should never reach here; but in case something wrong with VM Thread. 679 vm_direct_exit(code); 680 } else { 681 // VM thread is gone, just exit 682 vm_direct_exit(code); 683 } 684 ShouldNotReachHere(); 685 } 686 687 void notify_vm_shutdown() { 688 // For now, just a dtrace probe. 689 HOTSPOT_VM_SHUTDOWN(); 690 } 691 692 void vm_direct_exit(int code) { 693 notify_vm_shutdown(); 694 os::wait_for_keypress_at_exit(); 695 os::exit(code); 696 } 697 698 void vm_direct_exit(int code, const char* message) { 699 if (message != nullptr) { 700 tty->print_cr("%s", message); 701 } 702 vm_direct_exit(code); 703 } 704 705 static void vm_perform_shutdown_actions() { 706 if (is_init_completed()) { 707 Thread* thread = Thread::current_or_null(); 708 if (thread != nullptr && thread->is_Java_thread()) { 709 // We are leaving the VM, set state to native (in case any OS exit 710 // handlers call back to the VM) 711 JavaThread* jt = JavaThread::cast(thread); 712 // Must always be walkable or have no last_Java_frame when in 713 // thread_in_native 714 jt->frame_anchor()->make_walkable(); 715 jt->set_thread_state(_thread_in_native); 716 } 717 } 718 notify_vm_shutdown(); 719 } 720 721 void vm_shutdown() 722 { 723 vm_perform_shutdown_actions(); 724 os::wait_for_keypress_at_exit(); 725 os::shutdown(); 726 } 727 728 void vm_abort(bool dump_core) { 729 vm_perform_shutdown_actions(); 730 os::wait_for_keypress_at_exit(); 731 732 // Flush stdout and stderr before abort. 733 fflush(stdout); 734 fflush(stderr); 735 736 os::abort(dump_core); 737 ShouldNotReachHere(); 738 } 739 740 static void vm_notify_during_cds_dumping(const char* error, const char* message) { 741 if (error != nullptr) { 742 tty->print_cr("Error occurred during CDS dumping"); 743 tty->print("%s", error); 744 if (message != nullptr) { 745 tty->print_cr(": %s", message); 746 } 747 else { 748 tty->cr(); 749 } 750 } 751 } 752 753 void vm_exit_during_cds_dumping(const char* error, const char* message) { 754 vm_notify_during_cds_dumping(error, message); 755 756 // Failure during CDS dumping, we don't want to dump core 757 vm_abort(false); 758 } 759 760 static void vm_notify_during_shutdown(const char* error, const char* message) { 761 if (error != nullptr) { 762 tty->print_cr("Error occurred during initialization of VM"); 763 tty->print("%s", error); 764 if (message != nullptr) { 765 tty->print_cr(": %s", message); 766 } 767 else { 768 tty->cr(); 769 } 770 } 771 if (ShowMessageBoxOnError && WizardMode) { 772 fatal("Error occurred during initialization of VM"); 773 } 774 } 775 776 void vm_exit_during_initialization() { 777 vm_notify_during_shutdown(nullptr, nullptr); 778 779 // Failure during initialization, we don't want to dump core 780 vm_abort(false); 781 } 782 783 void vm_exit_during_initialization(Handle exception) { 784 tty->print_cr("Error occurred during initialization of VM"); 785 // If there are exceptions on this thread it must be cleared 786 // first and here. Any future calls to EXCEPTION_MARK requires 787 // that no pending exceptions exist. 788 JavaThread* THREAD = JavaThread::current(); // can't be null 789 if (HAS_PENDING_EXCEPTION) { 790 CLEAR_PENDING_EXCEPTION; 791 } 792 java_lang_Throwable::print_stack_trace(exception, tty); 793 tty->cr(); 794 vm_notify_during_shutdown(nullptr, nullptr); 795 796 // Failure during initialization, we don't want to dump core 797 vm_abort(false); 798 } 799 800 void vm_exit_during_initialization(Symbol* ex, const char* message) { 801 ResourceMark rm; 802 vm_notify_during_shutdown(ex->as_C_string(), message); 803 804 // Failure during initialization, we don't want to dump core 805 vm_abort(false); 806 } 807 808 void vm_exit_during_initialization(const char* error, const char* message) { 809 vm_notify_during_shutdown(error, message); 810 811 // Failure during initialization, we don't want to dump core 812 vm_abort(false); 813 } 814 815 void vm_shutdown_during_initialization(const char* error, const char* message) { 816 vm_notify_during_shutdown(error, message); 817 vm_shutdown(); 818 } 819 820 JDK_Version JDK_Version::_current; 821 const char* JDK_Version::_java_version; 822 const char* JDK_Version::_runtime_name; 823 const char* JDK_Version::_runtime_version; 824 const char* JDK_Version::_runtime_vendor_version; 825 const char* JDK_Version::_runtime_vendor_vm_bug_url; 826 827 void JDK_Version::initialize() { 828 assert(!_current.is_valid(), "Don't initialize twice"); 829 830 int major = VM_Version::vm_major_version(); 831 int minor = VM_Version::vm_minor_version(); 832 int security = VM_Version::vm_security_version(); 833 int build = VM_Version::vm_build_number(); 834 int patch = VM_Version::vm_patch_version(); 835 _current = JDK_Version(major, minor, security, patch, build); 836 } 837 838 void JDK_Version_init() { 839 JDK_Version::initialize(); 840 } 841 842 static int64_t encode_jdk_version(const JDK_Version& v) { 843 return 844 ((int64_t)v.major_version() << (BitsPerByte * 4)) | 845 ((int64_t)v.minor_version() << (BitsPerByte * 3)) | 846 ((int64_t)v.security_version() << (BitsPerByte * 2)) | 847 ((int64_t)v.patch_version() << (BitsPerByte * 1)) | 848 ((int64_t)v.build_number() << (BitsPerByte * 0)); 849 } 850 851 int JDK_Version::compare(const JDK_Version& other) const { 852 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); 853 uint64_t e = encode_jdk_version(*this); 854 uint64_t o = encode_jdk_version(other); 855 return (e > o) ? 1 : ((e == o) ? 0 : -1); 856 } 857 858 /* See JEP 223 */ 859 void JDK_Version::to_string(char* buffer, size_t buflen) const { 860 assert(buffer && buflen > 0, "call with useful buffer"); 861 size_t index = 0; 862 863 if (!is_valid()) { 864 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); 865 } else { 866 int rc = jio_snprintf( 867 &buffer[index], buflen - index, "%d.%d", _major, _minor); 868 if (rc == -1) return; 869 index += rc; 870 if (_patch > 0) { 871 rc = jio_snprintf(&buffer[index], buflen - index, ".%d.%d", _security, _patch); 872 if (rc == -1) return; 873 index += rc; 874 } else if (_security > 0) { 875 rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _security); 876 if (rc == -1) return; 877 index += rc; 878 } 879 if (_build > 0) { 880 rc = jio_snprintf(&buffer[index], buflen - index, "+%d", _build); 881 if (rc == -1) return; 882 index += rc; 883 } 884 } 885 }