1 /* 2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "classfile/classLoader.hpp" 27 #include "classfile/symbolTable.hpp" 28 #include "classfile/systemDictionary.hpp" 29 #include "code/codeCache.hpp" 30 #include "compiler/compileBroker.hpp" 31 #include "compiler/compilerOracle.hpp" 32 #include "interpreter/bytecodeHistogram.hpp" 33 #include "memory/genCollectedHeap.hpp" 34 #include "memory/oopFactory.hpp" 35 #include "memory/universe.hpp" 36 #include "oops/constantPool.hpp" 37 #include "oops/generateOopMap.hpp" 38 #include "oops/instanceKlass.hpp" 39 #include "oops/instanceOop.hpp" 40 #include "oops/method.hpp" 41 #include "oops/objArrayOop.hpp" 42 #include "oops/oop.inline.hpp" 43 #include "oops/symbol.hpp" 44 #include "prims/jvmtiExport.hpp" 45 #include "runtime/arguments.hpp" 46 #include "runtime/biasedLocking.hpp" 47 #include "runtime/compilationPolicy.hpp" 48 #include "runtime/fprofiler.hpp" 49 #include "runtime/init.hpp" 50 #include "runtime/interfaceSupport.hpp" 51 #include "runtime/java.hpp" 52 #include "runtime/memprofiler.hpp" 53 #include "runtime/sharedRuntime.hpp" 54 #include "runtime/statSampler.hpp" 55 #include "runtime/sweeper.hpp" 56 #include "runtime/task.hpp" 57 #include "runtime/thread.inline.hpp" 58 #include "runtime/timer.hpp" 59 #include "runtime/vm_operations.hpp" 60 #include "services/memTracker.hpp" 61 #include "trace/tracing.hpp" 62 #include "utilities/dtrace.hpp" 63 #include "utilities/globalDefinitions.hpp" 64 #include "utilities/histogram.hpp" 65 #include "utilities/macros.hpp" 66 #include "utilities/vmError.hpp" 67 #ifdef TARGET_ARCH_x86 68 # include "vm_version_x86.hpp" 69 #endif 70 #ifdef TARGET_ARCH_sparc 71 # include "vm_version_sparc.hpp" 72 #endif 73 #ifdef TARGET_ARCH_zero 74 # include "vm_version_zero.hpp" 75 #endif 76 #ifdef TARGET_ARCH_arm 77 # include "vm_version_arm.hpp" 78 #endif 79 #ifdef TARGET_ARCH_ppc 80 # include "vm_version_ppc.hpp" 81 #endif 82 #if INCLUDE_ALL_GCS 83 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp" 84 #include "gc_implementation/parallelScavenge/psScavenge.hpp" 85 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" 86 #endif // INCLUDE_ALL_GCS 87 #ifdef COMPILER1 88 #include "c1/c1_Compiler.hpp" 89 #include "c1/c1_Runtime1.hpp" 90 #endif 91 #ifdef COMPILER2 92 #include "code/compiledIC.hpp" 93 #include "compiler/methodLiveness.hpp" 94 #include "opto/compile.hpp" 95 #include "opto/indexSet.hpp" 96 #include "opto/runtime.hpp" 97 #endif 98 99 #ifndef USDT2 100 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown); 101 #endif /* !USDT2 */ 102 103 #ifndef PRODUCT 104 105 // Statistics printing (method invocation histogram) 106 107 GrowableArray<Method*>* collected_invoked_methods; 108 109 void collect_invoked_methods(Method* m) { 110 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { 111 collected_invoked_methods->push(m); 112 } 113 } 114 115 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 116 117 GrowableArray<Method*>* collected_profiled_methods; 118 119 void collect_profiled_methods(Method* m) { 120 Thread* thread = Thread::current(); 121 // This HandleMark prevents a huge amount of handles from being added 122 // to the metadata_handles() array on the thread. 123 HandleMark hm(thread); 124 methodHandle mh(thread, m); 125 if ((m->method_data() != NULL) && 126 (PrintMethodData || CompilerOracle::should_print(mh))) { 127 collected_profiled_methods->push(m); 128 } 129 } 130 131 132 int compare_methods(Method** a, Method** b) { 133 // %%% there can be 32-bit overflow here 134 return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) 135 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); 136 } 137 138 139 void print_method_invocation_histogram() { 140 ResourceMark rm; 141 HandleMark hm; 142 collected_invoked_methods = new GrowableArray<Method*>(1024); 143 SystemDictionary::methods_do(collect_invoked_methods); 144 collected_invoked_methods->sort(&compare_methods); 145 // 146 tty->cr(); 147 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff); 148 tty->cr(); 149 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); 150 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, 151 synch_total = 0, nativ_total = 0, acces_total = 0; 152 for (int index = 0; index < collected_invoked_methods->length(); index++) { 153 Method* m = collected_invoked_methods->at(index); 154 int c = m->invocation_count() + m->compiled_invocation_count(); 155 if (c >= MethodHistogramCutoff) m->print_invocation_count(); 156 int_total += m->invocation_count(); 157 comp_total += m->compiled_invocation_count(); 158 if (m->is_final()) final_total += c; 159 if (m->is_static()) static_total += c; 160 if (m->is_synchronized()) synch_total += c; 161 if (m->is_native()) nativ_total += c; 162 if (m->is_accessor()) acces_total += c; 163 } 164 tty->cr(); 165 total = int_total + comp_total; 166 tty->print_cr("Invocations summary:"); 167 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); 168 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); 169 tty->print_cr("\t%9d (100%%) total", total); 170 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); 171 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); 172 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); 173 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); 174 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); 175 tty->cr(); 176 SharedRuntime::print_call_statistics(comp_total); 177 } 178 179 void print_method_profiling_data() { 180 ResourceMark rm; 181 HandleMark hm; 182 collected_profiled_methods = new GrowableArray<Method*>(1024); 183 SystemDictionary::methods_do(collect_profiled_methods); 184 collected_profiled_methods->sort(&compare_methods); 185 186 int count = collected_profiled_methods->length(); 187 int total_size = 0; 188 if (count > 0) { 189 for (int index = 0; index < count; index++) { 190 Method* m = collected_profiled_methods->at(index); 191 ttyLocker ttyl; 192 tty->print_cr("------------------------------------------------------------------------"); 193 //m->print_name(tty); 194 m->print_invocation_count(); 195 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); 196 tty->cr(); 197 // Dump data on parameters if any 198 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) { 199 tty->fill_to(2); 200 m->method_data()->parameters_type_data()->print_data_on(tty); 201 } 202 m->print_codes(); 203 total_size += m->method_data()->size_in_bytes(); 204 } 205 tty->print_cr("------------------------------------------------------------------------"); 206 tty->print_cr("Total MDO size: %d bytes", total_size); 207 } 208 } 209 210 void print_bytecode_count() { 211 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 212 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); 213 } 214 } 215 216 AllocStats alloc_stats; 217 218 219 220 // General statistics printing (profiling ...) 221 void print_statistics() { 222 #ifdef ASSERT 223 224 if (CountRuntimeCalls) { 225 extern Histogram *RuntimeHistogram; 226 RuntimeHistogram->print(); 227 } 228 229 if (CountJNICalls) { 230 extern Histogram *JNIHistogram; 231 JNIHistogram->print(); 232 } 233 234 if (CountJVMCalls) { 235 extern Histogram *JVMHistogram; 236 JVMHistogram->print(); 237 } 238 239 #endif 240 241 if (MemProfiling) { 242 MemProfiler::disengage(); 243 } 244 245 if (CITime) { 246 CompileBroker::print_times(); 247 } 248 249 #ifdef COMPILER1 250 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { 251 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); 252 Runtime1::print_statistics(); 253 Deoptimization::print_statistics(); 254 SharedRuntime::print_statistics(); 255 nmethod::print_statistics(); 256 } 257 #endif /* COMPILER1 */ 258 259 #ifdef COMPILER2 260 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { 261 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); 262 Compile::print_statistics(); 263 #ifndef COMPILER1 264 Deoptimization::print_statistics(); 265 nmethod::print_statistics(); 266 SharedRuntime::print_statistics(); 267 #endif //COMPILER1 268 os::print_statistics(); 269 } 270 271 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 272 OptoRuntime::print_named_counters(); 273 } 274 275 if (TimeLivenessAnalysis) { 276 MethodLiveness::print_times(); 277 } 278 #ifdef ASSERT 279 if (CollectIndexSetStatistics) { 280 IndexSet::print_statistics(); 281 } 282 #endif // ASSERT 283 #endif // COMPILER2 284 if (CountCompiledCalls) { 285 print_method_invocation_histogram(); 286 } 287 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) { 288 print_method_profiling_data(); 289 } 290 if (TimeCompiler) { 291 COMPILER2_PRESENT(Compile::print_timers();) 292 } 293 if (TimeCompilationPolicy) { 294 CompilationPolicy::policy()->print_time(); 295 } 296 if (TimeOopMap) { 297 GenerateOopMap::print_time(); 298 } 299 if (ProfilerCheckIntervals) { 300 PeriodicTask::print_intervals(); 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 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 314 CodeCache::print(); 315 } 316 317 if (PrintMethodFlushingStatistics) { 318 NMethodSweeper::print(); 319 } 320 321 if (PrintCodeCache2) { 322 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 323 CodeCache::print_internals(); 324 } 325 326 if (PrintClassStatistics) { 327 SystemDictionary::print_class_statistics(); 328 } 329 if (PrintMethodStatistics) { 330 SystemDictionary::print_method_statistics(); 331 } 332 333 if (PrintVtableStats) { 334 klassVtable::print_statistics(); 335 klassItable::print_statistics(); 336 } 337 if (VerifyOops) { 338 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); 339 } 340 341 print_bytecode_count(); 342 if (PrintMallocStatistics) { 343 tty->print("allocation stats: "); 344 alloc_stats.print(); 345 tty->cr(); 346 } 347 348 if (PrintSystemDictionaryAtExit) { 349 SystemDictionary::print(); 350 } 351 352 if (PrintBiasedLockingStatistics) { 353 BiasedLocking::print_counters(); 354 } 355 356 #ifdef ENABLE_ZAP_DEAD_LOCALS 357 #ifdef COMPILER2 358 if (ZapDeadCompiledLocals) { 359 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); 360 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); 361 } 362 #endif // COMPILER2 363 #endif // ENABLE_ZAP_DEAD_LOCALS 364 // Native memory tracking data 365 if (PrintNMTStatistics) { 366 MemTracker::final_report(tty); 367 } 368 } 369 370 #else // PRODUCT MODE STATISTICS 371 372 void print_statistics() { 373 374 if (CITime) { 375 CompileBroker::print_times(); 376 } 377 378 if (PrintCodeCache) { 379 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 380 CodeCache::print(); 381 } 382 383 if (PrintMethodFlushingStatistics) { 384 NMethodSweeper::print(); 385 } 386 387 #ifdef COMPILER2 388 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 389 OptoRuntime::print_named_counters(); 390 } 391 #endif 392 if (PrintBiasedLockingStatistics) { 393 BiasedLocking::print_counters(); 394 } 395 396 // Native memory tracking data 397 if (PrintNMTStatistics) { 398 MemTracker::final_report(tty); 399 } 400 } 401 402 #endif 403 404 405 // Helper class for registering on_exit calls through JVM_OnExit 406 407 extern "C" { 408 typedef void (*__exit_proc)(void); 409 } 410 411 class ExitProc : public CHeapObj<mtInternal> { 412 private: 413 __exit_proc _proc; 414 // void (*_proc)(void); 415 ExitProc* _next; 416 public: 417 // ExitProc(void (*proc)(void)) { 418 ExitProc(__exit_proc proc) { 419 _proc = proc; 420 _next = NULL; 421 } 422 void evaluate() { _proc(); } 423 ExitProc* next() const { return _next; } 424 void set_next(ExitProc* next) { _next = next; } 425 }; 426 427 428 // Linked list of registered on_exit procedures 429 430 static ExitProc* exit_procs = NULL; 431 432 433 extern "C" { 434 void register_on_exit_function(void (*func)(void)) { 435 ExitProc *entry = new ExitProc(func); 436 // Classic vm does not throw an exception in case the allocation failed, 437 if (entry != NULL) { 438 entry->set_next(exit_procs); 439 exit_procs = entry; 440 } 441 } 442 } 443 444 // Note: before_exit() can be executed only once, if more than one threads 445 // are trying to shutdown the VM at the same time, only one thread 446 // can run before_exit() and all other threads must wait. 447 void before_exit(JavaThread * thread) { 448 #define BEFORE_EXIT_NOT_RUN 0 449 #define BEFORE_EXIT_RUNNING 1 450 #define BEFORE_EXIT_DONE 2 451 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; 452 453 // Note: don't use a Mutex to guard the entire before_exit(), as 454 // JVMTI post_thread_end_event and post_vm_death_event will run native code. 455 // A CAS or OSMutex would work just fine but then we need to manipulate 456 // thread state for Safepoint. Here we use Monitor wait() and notify_all() 457 // for synchronization. 458 { MutexLocker ml(BeforeExit_lock); 459 switch (_before_exit_status) { 460 case BEFORE_EXIT_NOT_RUN: 461 _before_exit_status = BEFORE_EXIT_RUNNING; 462 break; 463 case BEFORE_EXIT_RUNNING: 464 while (_before_exit_status == BEFORE_EXIT_RUNNING) { 465 BeforeExit_lock->wait(); 466 } 467 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); 468 return; 469 case BEFORE_EXIT_DONE: 470 return; 471 } 472 } 473 474 // The only difference between this and Win32's _onexit procs is that 475 // this version is invoked before any threads get killed. 476 ExitProc* current = exit_procs; 477 while (current != NULL) { 478 ExitProc* next = current->next(); 479 current->evaluate(); 480 delete current; 481 current = next; 482 } 483 484 // Hang forever on exit if we're reporting an error. 485 if (ShowMessageBoxOnError && is_error_reported()) { 486 os::infinite_sleep(); 487 } 488 489 // Terminate watcher thread - must before disenrolling any periodic task 490 if (PeriodicTask::num_tasks() > 0) 491 WatcherThread::stop(); 492 493 // Print statistics gathered (profiling ...) 494 if (Arguments::has_profile()) { 495 FlatProfiler::disengage(); 496 FlatProfiler::print(10); 497 } 498 499 // shut down the StatSampler task 500 StatSampler::disengage(); 501 StatSampler::destroy(); 502 503 // Stop concurrent GC threads 504 Universe::heap()->stop(); 505 506 // Print GC/heap related information. 507 if (PrintGCDetails) { 508 Universe::print(); 509 AdaptiveSizePolicyOutput(0); 510 if (Verbose) { 511 ClassLoaderDataGraph::dump_on(gclog_or_tty); 512 } 513 } 514 515 if (PrintBytecodeHistogram) { 516 BytecodeHistogram::print(); 517 } 518 519 if (JvmtiExport::should_post_thread_life()) { 520 JvmtiExport::post_thread_end(thread); 521 } 522 523 EventThreadEnd event; 524 if (event.should_commit()) { 525 event.set_thread(THREAD_TRACE_ID(thread)); 526 event.commit(); 527 } 528 529 TRACE_VM_EXIT(); 530 531 // Always call even when there are not JVMTI environments yet, since environments 532 // may be attached late and JVMTI must track phases of VM execution 533 JvmtiExport::post_vm_death(); 534 Threads::shutdown_vm_agents(); 535 536 // Terminate the signal thread 537 // Note: we don't wait until it actually dies. 538 os::terminate_signal_thread(); 539 540 print_statistics(); 541 Universe::heap()->print_tracing_info(); 542 543 { MutexLocker ml(BeforeExit_lock); 544 _before_exit_status = BEFORE_EXIT_DONE; 545 BeforeExit_lock->notify_all(); 546 } 547 548 if (VerifyStringTableAtExit) { 549 int fail_cnt = 0; 550 { 551 MutexLocker ml(StringTable_lock); 552 fail_cnt = StringTable::verify_and_compare_entries(); 553 } 554 555 if (fail_cnt != 0) { 556 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); 557 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); 558 } 559 } 560 561 #undef BEFORE_EXIT_NOT_RUN 562 #undef BEFORE_EXIT_RUNNING 563 #undef BEFORE_EXIT_DONE 564 } 565 566 void vm_exit(int code) { 567 Thread* thread = ThreadLocalStorage::is_initialized() ? 568 ThreadLocalStorage::get_thread_slow() : NULL; 569 if (thread == NULL) { 570 // we have serious problems -- just exit 571 vm_direct_exit(code); 572 } 573 574 if (VMThread::vm_thread() != NULL) { 575 // Fire off a VM_Exit operation to bring VM to a safepoint and exit 576 VM_Exit op(code); 577 if (thread->is_Java_thread()) 578 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); 579 VMThread::execute(&op); 580 // should never reach here; but in case something wrong with VM Thread. 581 vm_direct_exit(code); 582 } else { 583 // VM thread is gone, just exit 584 vm_direct_exit(code); 585 } 586 ShouldNotReachHere(); 587 } 588 589 void notify_vm_shutdown() { 590 // For now, just a dtrace probe. 591 #ifndef USDT2 592 HS_DTRACE_PROBE(hotspot, vm__shutdown); 593 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); 594 #else /* USDT2 */ 595 HOTSPOT_VM_SHUTDOWN(); 596 #endif /* USDT2 */ 597 } 598 599 void vm_direct_exit(int code) { 600 notify_vm_shutdown(); 601 os::wait_for_keypress_at_exit(); 602 ::exit(code); 603 } 604 605 void vm_perform_shutdown_actions() { 606 // Warning: do not call 'exit_globals()' here. All threads are still running. 607 // Calling 'exit_globals()' will disable thread-local-storage and cause all 608 // kinds of assertions to trigger in debug mode. 609 if (is_init_completed()) { 610 Thread* thread = ThreadLocalStorage::is_initialized() ? 611 ThreadLocalStorage::get_thread_slow() : NULL; 612 if (thread != NULL && thread->is_Java_thread()) { 613 // We are leaving the VM, set state to native (in case any OS exit 614 // handlers call back to the VM) 615 JavaThread* jt = (JavaThread*)thread; 616 // Must always be walkable or have no last_Java_frame when in 617 // thread_in_native 618 jt->frame_anchor()->make_walkable(jt); 619 jt->set_thread_state(_thread_in_native); 620 } 621 } 622 notify_vm_shutdown(); 623 } 624 625 void vm_shutdown() 626 { 627 vm_perform_shutdown_actions(); 628 os::wait_for_keypress_at_exit(); 629 os::shutdown(); 630 } 631 632 void vm_abort(bool dump_core) { 633 vm_perform_shutdown_actions(); 634 os::wait_for_keypress_at_exit(); 635 os::abort(dump_core); 636 ShouldNotReachHere(); 637 } 638 639 void vm_notify_during_shutdown(const char* error, const char* message) { 640 if (error != NULL) { 641 tty->print_cr("Error occurred during initialization of VM"); 642 tty->print("%s", error); 643 if (message != NULL) { 644 tty->print_cr(": %s", message); 645 } 646 else { 647 tty->cr(); 648 } 649 } 650 if (ShowMessageBoxOnError && WizardMode) { 651 fatal("Error occurred during initialization of VM"); 652 } 653 } 654 655 void vm_exit_during_initialization(Handle exception) { 656 tty->print_cr("Error occurred during initialization of VM"); 657 // If there are exceptions on this thread it must be cleared 658 // first and here. Any future calls to EXCEPTION_MARK requires 659 // that no pending exceptions exist. 660 Thread *THREAD = Thread::current(); 661 if (HAS_PENDING_EXCEPTION) { 662 CLEAR_PENDING_EXCEPTION; 663 } 664 java_lang_Throwable::print(exception, tty); 665 tty->cr(); 666 java_lang_Throwable::print_stack_trace(exception(), tty); 667 tty->cr(); 668 vm_notify_during_shutdown(NULL, NULL); 669 670 // Failure during initialization, we don't want to dump core 671 vm_abort(false); 672 } 673 674 void vm_exit_during_initialization(Symbol* ex, const char* message) { 675 ResourceMark rm; 676 vm_notify_during_shutdown(ex->as_C_string(), message); 677 678 // Failure during initialization, we don't want to dump core 679 vm_abort(false); 680 } 681 682 void vm_exit_during_initialization(const char* error, const char* message) { 683 vm_notify_during_shutdown(error, message); 684 685 // Failure during initialization, we don't want to dump core 686 vm_abort(false); 687 } 688 689 void vm_shutdown_during_initialization(const char* error, const char* message) { 690 vm_notify_during_shutdown(error, message); 691 vm_shutdown(); 692 } 693 694 JDK_Version JDK_Version::_current; 695 const char* JDK_Version::_runtime_name; 696 const char* JDK_Version::_runtime_version; 697 698 void JDK_Version::initialize() { 699 jdk_version_info info; 700 assert(!_current.is_valid(), "Don't initialize twice"); 701 702 void *lib_handle = os::native_java_library(); 703 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, 704 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); 705 706 if (func == NULL) { 707 // JDK older than 1.6 708 _current._partially_initialized = true; 709 } else { 710 (*func)(&info, sizeof(info)); 711 712 int major = JDK_VERSION_MAJOR(info.jdk_version); 713 int minor = JDK_VERSION_MINOR(info.jdk_version); 714 int micro = JDK_VERSION_MICRO(info.jdk_version); 715 int build = JDK_VERSION_BUILD(info.jdk_version); 716 if (major == 1 && minor > 4) { 717 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. 718 major = minor; 719 minor = micro; 720 micro = 0; 721 } 722 _current = JDK_Version(major, minor, micro, info.update_version, 723 info.special_update_version, build, 724 info.thread_park_blocker == 1, 725 info.post_vm_init_hook_enabled == 1, 726 info.pending_list_uses_discovered_field == 1); 727 } 728 } 729 730 void JDK_Version::fully_initialize( 731 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { 732 // This is only called when current is less than 1.6 and we've gotten 733 // far enough in the initialization to determine the exact version. 734 assert(major < 6, "not needed for JDK version >= 6"); 735 assert(is_partially_initialized(), "must not initialize"); 736 if (major < 5) { 737 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. 738 micro = minor; 739 minor = major; 740 major = 1; 741 } 742 _current = JDK_Version(major, minor, micro, update); 743 } 744 745 void JDK_Version_init() { 746 JDK_Version::initialize(); 747 } 748 749 static int64_t encode_jdk_version(const JDK_Version& v) { 750 return 751 ((int64_t)v.major_version() << (BitsPerByte * 5)) | 752 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | 753 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | 754 ((int64_t)v.update_version() << (BitsPerByte * 2)) | 755 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | 756 ((int64_t)v.build_number() << (BitsPerByte * 0)); 757 } 758 759 int JDK_Version::compare(const JDK_Version& other) const { 760 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); 761 if (!is_partially_initialized() && other.is_partially_initialized()) { 762 return -(other.compare(*this)); // flip the comparators 763 } 764 assert(!other.is_partially_initialized(), "Not initialized yet"); 765 if (is_partially_initialized()) { 766 assert(other.major_version() >= 6, 767 "Invalid JDK version comparison during initialization"); 768 return -1; 769 } else { 770 uint64_t e = encode_jdk_version(*this); 771 uint64_t o = encode_jdk_version(other); 772 return (e > o) ? 1 : ((e == o) ? 0 : -1); 773 } 774 } 775 776 void JDK_Version::to_string(char* buffer, size_t buflen) const { 777 assert(buffer && buflen > 0, "call with useful buffer"); 778 size_t index = 0; 779 if (!is_valid()) { 780 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); 781 } else if (is_partially_initialized()) { 782 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); 783 } else { 784 int rc = jio_snprintf( 785 &buffer[index], buflen - index, "%d.%d", _major, _minor); 786 if (rc == -1) return; 787 index += rc; 788 if (_micro > 0) { 789 rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); 790 if (rc == -1) return; 791 index += rc; 792 } 793 if (_update > 0) { 794 rc = jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); 795 if (rc == -1) return; 796 index += rc; 797 } 798 if (_special > 0) { 799 rc = jio_snprintf(&buffer[index], buflen - index, "%c", _special); 800 if (rc == -1) return; 801 index += rc; 802 } 803 if (_build > 0) { 804 rc = jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); 805 if (rc == -1) return; 806 index += rc; 807 } 808 } 809 }