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