1 /* 2 * Copyright (c) 1997, 2016, 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 "jfr/jfrEvents.hpp" 34 #include "jfr/support/jfrThreadId.hpp" 35 #include "memory/genCollectedHeap.hpp" 36 #include "memory/oopFactory.hpp" 37 #include "memory/universe.hpp" 38 #include "oops/constantPool.hpp" 39 #include "oops/generateOopMap.hpp" 40 #include "oops/instanceKlass.hpp" 41 #include "oops/instanceOop.hpp" 42 #include "oops/method.hpp" 43 #include "oops/objArrayOop.hpp" 44 #include "oops/oop.inline.hpp" 45 #include "oops/symbol.hpp" 46 #include "prims/jvmtiExport.hpp" 47 #include "runtime/arguments.hpp" 48 #include "runtime/biasedLocking.hpp" 49 #include "runtime/compilationPolicy.hpp" 50 #include "runtime/fprofiler.hpp" 51 #include "runtime/init.hpp" 52 #include "runtime/interfaceSupport.hpp" 53 #include "runtime/java.hpp" 54 #include "runtime/memprofiler.hpp" 55 #include "runtime/sharedRuntime.hpp" 56 #include "runtime/statSampler.hpp" 57 #include "runtime/sweeper.hpp" 58 #include "runtime/task.hpp" 59 #include "runtime/thread.inline.hpp" 60 #include "runtime/timer.hpp" 61 #include "runtime/vm_operations.hpp" 62 #include "services/memTracker.hpp" 63 #include "utilities/dtrace.hpp" 64 #include "utilities/globalDefinitions.hpp" 65 #include "utilities/histogram.hpp" 66 #include "utilities/macros.hpp" 67 #include "utilities/vmError.hpp" 68 #ifdef TARGET_ARCH_x86 69 # include "vm_version_x86.hpp" 70 #endif 71 #ifdef TARGET_ARCH_sparc 72 # include "vm_version_sparc.hpp" 73 #endif 74 #ifdef TARGET_ARCH_zero 75 # include "vm_version_zero.hpp" 76 #endif 77 #ifdef TARGET_ARCH_arm 78 # include "vm_version_arm.hpp" 79 #endif 80 #ifdef TARGET_ARCH_ppc 81 # include "vm_version_ppc.hpp" 82 #endif 83 #if INCLUDE_ALL_GCS 84 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp" 85 #include "gc_implementation/parallelScavenge/psScavenge.hpp" 86 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" 87 #endif // INCLUDE_ALL_GCS 88 #ifdef COMPILER1 89 #include "c1/c1_Compiler.hpp" 90 #include "c1/c1_Runtime1.hpp" 91 #endif 92 #ifdef COMPILER2 93 #include "code/compiledIC.hpp" 94 #include "compiler/methodLiveness.hpp" 95 #include "opto/compile.hpp" 96 #include "opto/indexSet.hpp" 97 #include "opto/runtime.hpp" 98 #endif 99 #if INCLUDE_JFR 100 #include "jfr/jfr.hpp" 101 #endif 102 103 #ifndef USDT2 104 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown); 105 #endif /* !USDT2 */ 106 107 #ifndef PRODUCT 108 109 // Statistics printing (method invocation histogram) 110 111 GrowableArray<Method*>* collected_invoked_methods; 112 113 void collect_invoked_methods(Method* m) { 114 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { 115 collected_invoked_methods->push(m); 116 } 117 } 118 119 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 120 121 GrowableArray<Method*>* collected_profiled_methods; 122 123 void collect_profiled_methods(Method* m) { 124 Thread* thread = Thread::current(); 125 // This HandleMark prevents a huge amount of handles from being added 126 // to the metadata_handles() array on the thread. 127 HandleMark hm(thread); 128 methodHandle mh(thread, m); 129 if ((m->method_data() != NULL) && 130 (PrintMethodData || CompilerOracle::should_print(mh))) { 131 collected_profiled_methods->push(m); 132 } 133 } 134 135 136 int compare_methods(Method** a, Method** b) { 137 // %%% there can be 32-bit overflow here 138 return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) 139 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); 140 } 141 142 143 void print_method_invocation_histogram() { 144 ResourceMark rm; 145 HandleMark hm; 146 collected_invoked_methods = new GrowableArray<Method*>(1024); 147 SystemDictionary::methods_do(collect_invoked_methods); 148 collected_invoked_methods->sort(&compare_methods); 149 // 150 tty->cr(); 151 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff); 152 tty->cr(); 153 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); 154 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, 155 synch_total = 0, nativ_total = 0, acces_total = 0; 156 for (int index = 0; index < collected_invoked_methods->length(); index++) { 157 Method* m = collected_invoked_methods->at(index); 158 int c = m->invocation_count() + m->compiled_invocation_count(); 159 if (c >= MethodHistogramCutoff) m->print_invocation_count(); 160 int_total += m->invocation_count(); 161 comp_total += m->compiled_invocation_count(); 162 if (m->is_final()) final_total += c; 163 if (m->is_static()) static_total += c; 164 if (m->is_synchronized()) synch_total += c; 165 if (m->is_native()) nativ_total += c; 166 if (m->is_accessor()) acces_total += c; 167 } 168 tty->cr(); 169 total = int_total + comp_total; 170 tty->print_cr("Invocations summary:"); 171 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); 172 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); 173 tty->print_cr("\t%9d (100%%) total", total); 174 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); 175 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); 176 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); 177 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); 178 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); 179 tty->cr(); 180 SharedRuntime::print_call_statistics(comp_total); 181 } 182 183 void print_method_profiling_data() { 184 ResourceMark rm; 185 HandleMark hm; 186 collected_profiled_methods = new GrowableArray<Method*>(1024); 187 SystemDictionary::methods_do(collect_profiled_methods); 188 collected_profiled_methods->sort(&compare_methods); 189 190 int count = collected_profiled_methods->length(); 191 int total_size = 0; 192 if (count > 0) { 193 for (int index = 0; index < count; index++) { 194 Method* m = collected_profiled_methods->at(index); 195 ttyLocker ttyl; 196 tty->print_cr("------------------------------------------------------------------------"); 197 //m->print_name(tty); 198 m->print_invocation_count(); 199 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); 200 tty->cr(); 201 // Dump data on parameters if any 202 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) { 203 tty->fill_to(2); 204 m->method_data()->parameters_type_data()->print_data_on(tty); 205 } 206 m->print_codes(); 207 total_size += m->method_data()->size_in_bytes(); 208 } 209 tty->print_cr("------------------------------------------------------------------------"); 210 tty->print_cr("Total MDO size: %d bytes", total_size); 211 } 212 } 213 214 void print_bytecode_count() { 215 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 216 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); 217 } 218 } 219 220 AllocStats alloc_stats; 221 222 223 224 // General statistics printing (profiling ...) 225 void print_statistics() { 226 #ifdef ASSERT 227 228 if (CountRuntimeCalls) { 229 extern Histogram *RuntimeHistogram; 230 RuntimeHistogram->print(); 231 } 232 233 if (CountJNICalls) { 234 extern Histogram *JNIHistogram; 235 JNIHistogram->print(); 236 } 237 238 if (CountJVMCalls) { 239 extern Histogram *JVMHistogram; 240 JVMHistogram->print(); 241 } 242 243 #endif 244 245 if (MemProfiling) { 246 MemProfiler::disengage(); 247 } 248 249 if (CITime) { 250 CompileBroker::print_times(); 251 } 252 253 #ifdef COMPILER1 254 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { 255 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); 256 Runtime1::print_statistics(); 257 Deoptimization::print_statistics(); 258 SharedRuntime::print_statistics(); 259 nmethod::print_statistics(); 260 } 261 #endif /* COMPILER1 */ 262 263 #ifdef COMPILER2 264 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { 265 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); 266 Compile::print_statistics(); 267 #ifndef COMPILER1 268 Deoptimization::print_statistics(); 269 nmethod::print_statistics(); 270 SharedRuntime::print_statistics(); 271 #endif //COMPILER1 272 os::print_statistics(); 273 } 274 275 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 276 OptoRuntime::print_named_counters(); 277 } 278 279 if (TimeLivenessAnalysis) { 280 MethodLiveness::print_times(); 281 } 282 #ifdef ASSERT 283 if (CollectIndexSetStatistics) { 284 IndexSet::print_statistics(); 285 } 286 #endif // ASSERT 287 #endif // COMPILER2 288 if (CountCompiledCalls) { 289 print_method_invocation_histogram(); 290 } 291 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) { 292 print_method_profiling_data(); 293 } 294 if (TimeCompiler) { 295 COMPILER2_PRESENT(Compile::print_timers();) 296 } 297 if (TimeCompilationPolicy) { 298 CompilationPolicy::policy()->print_time(); 299 } 300 if (TimeOopMap) { 301 GenerateOopMap::print_time(); 302 } 303 if (ProfilerCheckIntervals) { 304 PeriodicTask::print_intervals(); 305 } 306 if (PrintSymbolTableSizeHistogram) { 307 SymbolTable::print_histogram(); 308 } 309 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 310 BytecodeCounter::print(); 311 } 312 if (PrintBytecodePairHistogram) { 313 BytecodePairHistogram::print(); 314 } 315 316 if (PrintCodeCache) { 317 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 318 CodeCache::print(); 319 } 320 321 if (PrintMethodFlushingStatistics) { 322 NMethodSweeper::print(); 323 } 324 325 if (PrintCodeCache2) { 326 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 327 CodeCache::print_internals(); 328 } 329 330 if (PrintClassStatistics) { 331 SystemDictionary::print_class_statistics(); 332 } 333 if (PrintMethodStatistics) { 334 SystemDictionary::print_method_statistics(); 335 } 336 337 if (PrintVtableStats) { 338 klassVtable::print_statistics(); 339 klassItable::print_statistics(); 340 } 341 if (VerifyOops) { 342 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); 343 } 344 345 print_bytecode_count(); 346 if (PrintMallocStatistics) { 347 tty->print("allocation stats: "); 348 alloc_stats.print(); 349 tty->cr(); 350 } 351 352 if (PrintSystemDictionaryAtExit) { 353 SystemDictionary::print(); 354 } 355 356 if (PrintBiasedLockingStatistics) { 357 BiasedLocking::print_counters(); 358 } 359 360 #ifdef ENABLE_ZAP_DEAD_LOCALS 361 #ifdef COMPILER2 362 if (ZapDeadCompiledLocals) { 363 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); 364 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); 365 } 366 #endif // COMPILER2 367 #endif // ENABLE_ZAP_DEAD_LOCALS 368 // Native memory tracking data 369 if (PrintNMTStatistics) { 370 MemTracker::final_report(tty); 371 } 372 } 373 374 #else // PRODUCT MODE STATISTICS 375 376 void print_statistics() { 377 378 if (CITime) { 379 CompileBroker::print_times(); 380 } 381 382 if (PrintCodeCache) { 383 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 384 CodeCache::print(); 385 } 386 387 if (PrintMethodFlushingStatistics) { 388 NMethodSweeper::print(); 389 } 390 391 #ifdef COMPILER2 392 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 393 OptoRuntime::print_named_counters(); 394 } 395 #endif 396 if (PrintBiasedLockingStatistics) { 397 BiasedLocking::print_counters(); 398 } 399 400 // Native memory tracking data 401 if (PrintNMTStatistics) { 402 MemTracker::final_report(tty); 403 } 404 } 405 406 #endif 407 408 409 // Helper class for registering on_exit calls through JVM_OnExit 410 411 extern "C" { 412 typedef void (*__exit_proc)(void); 413 } 414 415 class ExitProc : public CHeapObj<mtInternal> { 416 private: 417 __exit_proc _proc; 418 // void (*_proc)(void); 419 ExitProc* _next; 420 public: 421 // ExitProc(void (*proc)(void)) { 422 ExitProc(__exit_proc proc) { 423 _proc = proc; 424 _next = NULL; 425 } 426 void evaluate() { _proc(); } 427 ExitProc* next() const { return _next; } 428 void set_next(ExitProc* next) { _next = next; } 429 }; 430 431 432 // Linked list of registered on_exit procedures 433 434 static ExitProc* exit_procs = NULL; 435 436 437 extern "C" { 438 void register_on_exit_function(void (*func)(void)) { 439 ExitProc *entry = new ExitProc(func); 440 // Classic vm does not throw an exception in case the allocation failed, 441 if (entry != NULL) { 442 entry->set_next(exit_procs); 443 exit_procs = entry; 444 } 445 } 446 } 447 448 // Note: before_exit() can be executed only once, if more than one threads 449 // are trying to shutdown the VM at the same time, only one thread 450 // can run before_exit() and all other threads must wait. 451 void before_exit(JavaThread * thread) { 452 #define BEFORE_EXIT_NOT_RUN 0 453 #define BEFORE_EXIT_RUNNING 1 454 #define BEFORE_EXIT_DONE 2 455 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; 456 457 // Note: don't use a Mutex to guard the entire before_exit(), as 458 // JVMTI post_thread_end_event and post_vm_death_event will run native code. 459 // A CAS or OSMutex would work just fine but then we need to manipulate 460 // thread state for Safepoint. Here we use Monitor wait() and notify_all() 461 // for synchronization. 462 { MutexLocker ml(BeforeExit_lock); 463 switch (_before_exit_status) { 464 case BEFORE_EXIT_NOT_RUN: 465 _before_exit_status = BEFORE_EXIT_RUNNING; 466 break; 467 case BEFORE_EXIT_RUNNING: 468 while (_before_exit_status == BEFORE_EXIT_RUNNING) { 469 BeforeExit_lock->wait(); 470 } 471 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); 472 return; 473 case BEFORE_EXIT_DONE: 474 return; 475 } 476 } 477 478 // The only difference between this and Win32's _onexit procs is that 479 // this version is invoked before any threads get killed. 480 ExitProc* current = exit_procs; 481 while (current != NULL) { 482 ExitProc* next = current->next(); 483 current->evaluate(); 484 delete current; 485 current = next; 486 } 487 488 // Hang forever on exit if we're reporting an error. 489 if (ShowMessageBoxOnError && is_error_reported()) { 490 os::infinite_sleep(); 491 } 492 493 // Terminate watcher thread - must before disenrolling any periodic task 494 if (PeriodicTask::num_tasks() > 0) 495 WatcherThread::stop(); 496 497 // Print statistics gathered (profiling ...) 498 if (Arguments::has_profile()) { 499 FlatProfiler::disengage(); 500 FlatProfiler::print(10); 501 } 502 503 // shut down the StatSampler task 504 StatSampler::disengage(); 505 StatSampler::destroy(); 506 507 // Stop concurrent GC threads 508 Universe::heap()->stop(); 509 510 // Print GC/heap related information. 511 if (PrintGCDetails) { 512 Universe::print(); 513 AdaptiveSizePolicyOutput(0); 514 if (Verbose) { 515 ClassLoaderDataGraph::dump_on(gclog_or_tty); 516 } 517 } 518 519 if (PrintBytecodeHistogram) { 520 BytecodeHistogram::print(); 521 } 522 523 if (JvmtiExport::should_post_thread_life()) { 524 JvmtiExport::post_thread_end(thread); 525 } 526 527 528 EventThreadEnd event; 529 if (event.should_commit()) { 530 event.set_thread(JFR_THREAD_ID(thread)); 531 event.commit(); 532 } 533 534 JFR_ONLY(Jfr::on_vm_shutdown();) 535 536 // Always call even when there are not JVMTI environments yet, since environments 537 // may be attached late and JVMTI must track phases of VM execution 538 JvmtiExport::post_vm_death(); 539 Threads::shutdown_vm_agents(); 540 541 // Terminate the signal thread 542 // Note: we don't wait until it actually dies. 543 os::terminate_signal_thread(); 544 545 print_statistics(); 546 Universe::heap()->print_tracing_info(); 547 548 { MutexLocker ml(BeforeExit_lock); 549 _before_exit_status = BEFORE_EXIT_DONE; 550 BeforeExit_lock->notify_all(); 551 } 552 553 if (VerifyStringTableAtExit) { 554 int fail_cnt = 0; 555 { 556 MutexLocker ml(StringTable_lock); 557 fail_cnt = StringTable::verify_and_compare_entries(); 558 } 559 560 if (fail_cnt != 0) { 561 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); 562 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); 563 } 564 } 565 566 #undef BEFORE_EXIT_NOT_RUN 567 #undef BEFORE_EXIT_RUNNING 568 #undef BEFORE_EXIT_DONE 569 } 570 571 void vm_exit(int code) { 572 Thread* thread = ThreadLocalStorage::is_initialized() ? 573 ThreadLocalStorage::get_thread_slow() : NULL; 574 if (thread == NULL) { 575 // we have serious problems -- just exit 576 vm_direct_exit(code); 577 } 578 579 if (VMThread::vm_thread() != NULL) { 580 // Fire off a VM_Exit operation to bring VM to a safepoint and exit 581 VM_Exit op(code); 582 if (thread->is_Java_thread()) 583 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); 584 VMThread::execute(&op); 585 // should never reach here; but in case something wrong with VM Thread. 586 vm_direct_exit(code); 587 } else { 588 // VM thread is gone, just exit 589 vm_direct_exit(code); 590 } 591 ShouldNotReachHere(); 592 } 593 594 void notify_vm_shutdown() { 595 // For now, just a dtrace probe. 596 #ifndef USDT2 597 HS_DTRACE_PROBE(hotspot, vm__shutdown); 598 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); 599 #else /* USDT2 */ 600 HOTSPOT_VM_SHUTDOWN(); 601 #endif /* USDT2 */ 602 } 603 604 void vm_direct_exit(int code) { 605 notify_vm_shutdown(); 606 os::wait_for_keypress_at_exit(); 607 ::exit(code); 608 } 609 610 void vm_perform_shutdown_actions() { 611 // Warning: do not call 'exit_globals()' here. All threads are still running. 612 // Calling 'exit_globals()' will disable thread-local-storage and cause all 613 // kinds of assertions to trigger in debug mode. 614 if (is_init_completed()) { 615 Thread* thread = ThreadLocalStorage::is_initialized() ? 616 ThreadLocalStorage::get_thread_slow() : NULL; 617 if (thread != NULL && thread->is_Java_thread()) { 618 // We are leaving the VM, set state to native (in case any OS exit 619 // handlers call back to the VM) 620 JavaThread* jt = (JavaThread*)thread; 621 // Must always be walkable or have no last_Java_frame when in 622 // thread_in_native 623 jt->frame_anchor()->make_walkable(jt); 624 jt->set_thread_state(_thread_in_native); 625 } 626 } 627 notify_vm_shutdown(); 628 } 629 630 void vm_shutdown() 631 { 632 vm_perform_shutdown_actions(); 633 os::wait_for_keypress_at_exit(); 634 os::shutdown(); 635 } 636 637 void vm_abort(bool dump_core) { 638 vm_perform_shutdown_actions(); 639 os::wait_for_keypress_at_exit(); 640 os::abort(dump_core); 641 ShouldNotReachHere(); 642 } 643 644 void vm_notify_during_shutdown(const char* error, const char* message) { 645 if (error != NULL) { 646 tty->print_cr("Error occurred during initialization of VM"); 647 tty->print("%s", error); 648 if (message != NULL) { 649 tty->print_cr(": %s", message); 650 } 651 else { 652 tty->cr(); 653 } 654 } 655 if (ShowMessageBoxOnError && WizardMode) { 656 fatal("Error occurred during initialization of VM"); 657 } 658 } 659 660 void vm_exit_during_initialization(Handle exception) { 661 tty->print_cr("Error occurred during initialization of VM"); 662 // If there are exceptions on this thread it must be cleared 663 // first and here. Any future calls to EXCEPTION_MARK requires 664 // that no pending exceptions exist. 665 Thread *THREAD = Thread::current(); 666 if (HAS_PENDING_EXCEPTION) { 667 CLEAR_PENDING_EXCEPTION; 668 } 669 java_lang_Throwable::print(exception, tty); 670 tty->cr(); 671 java_lang_Throwable::print_stack_trace(exception(), tty); 672 tty->cr(); 673 vm_notify_during_shutdown(NULL, NULL); 674 675 // Failure during initialization, we don't want to dump core 676 vm_abort(false); 677 } 678 679 void vm_exit_during_initialization(Symbol* ex, const char* message) { 680 ResourceMark rm; 681 vm_notify_during_shutdown(ex->as_C_string(), message); 682 683 // Failure during initialization, we don't want to dump core 684 vm_abort(false); 685 } 686 687 void vm_exit_during_initialization(const char* error, const char* message) { 688 vm_notify_during_shutdown(error, message); 689 690 // Failure during initialization, we don't want to dump core 691 vm_abort(false); 692 } 693 694 void vm_shutdown_during_initialization(const char* error, const char* message) { 695 vm_notify_during_shutdown(error, message); 696 vm_shutdown(); 697 } 698 699 JDK_Version JDK_Version::_current; 700 const char* JDK_Version::_runtime_name; 701 const char* JDK_Version::_runtime_version; 702 703 void JDK_Version::initialize() { 704 jdk_version_info info; 705 assert(!_current.is_valid(), "Don't initialize twice"); 706 707 void *lib_handle = os::native_java_library(); 708 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, 709 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); 710 711 if (func == NULL) { 712 // JDK older than 1.6 713 _current._partially_initialized = true; 714 } else { 715 (*func)(&info, sizeof(info)); 716 717 int major = JDK_VERSION_MAJOR(info.jdk_version); 718 int minor = JDK_VERSION_MINOR(info.jdk_version); 719 int micro = JDK_VERSION_MICRO(info.jdk_version); 720 int build = JDK_VERSION_BUILD(info.jdk_version); 721 if (major == 1 && minor > 4) { 722 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. 723 major = minor; 724 minor = micro; 725 micro = 0; 726 } 727 _current = JDK_Version(major, minor, micro, info.update_version, 728 info.special_update_version, build, 729 info.thread_park_blocker == 1, 730 info.post_vm_init_hook_enabled == 1, 731 info.pending_list_uses_discovered_field == 1); 732 } 733 } 734 735 void JDK_Version::fully_initialize( 736 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { 737 // This is only called when current is less than 1.6 and we've gotten 738 // far enough in the initialization to determine the exact version. 739 assert(major < 6, "not needed for JDK version >= 6"); 740 assert(is_partially_initialized(), "must not initialize"); 741 if (major < 5) { 742 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. 743 micro = minor; 744 minor = major; 745 major = 1; 746 } 747 _current = JDK_Version(major, minor, micro, update); 748 } 749 750 void JDK_Version_init() { 751 JDK_Version::initialize(); 752 } 753 754 static int64_t encode_jdk_version(const JDK_Version& v) { 755 return 756 ((int64_t)v.major_version() << (BitsPerByte * 5)) | 757 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | 758 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | 759 ((int64_t)v.update_version() << (BitsPerByte * 2)) | 760 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | 761 ((int64_t)v.build_number() << (BitsPerByte * 0)); 762 } 763 764 int JDK_Version::compare(const JDK_Version& other) const { 765 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); 766 if (!is_partially_initialized() && other.is_partially_initialized()) { 767 return -(other.compare(*this)); // flip the comparators 768 } 769 assert(!other.is_partially_initialized(), "Not initialized yet"); 770 if (is_partially_initialized()) { 771 assert(other.major_version() >= 6, 772 "Invalid JDK version comparison during initialization"); 773 return -1; 774 } else { 775 uint64_t e = encode_jdk_version(*this); 776 uint64_t o = encode_jdk_version(other); 777 return (e > o) ? 1 : ((e == o) ? 0 : -1); 778 } 779 } 780 781 void JDK_Version::to_string(char* buffer, size_t buflen) const { 782 assert(buffer && buflen > 0, "call with useful buffer"); 783 size_t index = 0; 784 if (!is_valid()) { 785 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); 786 } else if (is_partially_initialized()) { 787 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); 788 } else { 789 int rc = jio_snprintf( 790 &buffer[index], buflen - index, "%d.%d", _major, _minor); 791 if (rc == -1) return; 792 index += rc; 793 if (_micro > 0) { 794 rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); 795 if (rc == -1) return; 796 index += rc; 797 } 798 if (_update > 0) { 799 rc = jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); 800 if (rc == -1) return; 801 index += rc; 802 } 803 if (_special > 0) { 804 rc = jio_snprintf(&buffer[index], buflen - index, "%c", _special); 805 if (rc == -1) return; 806 index += rc; 807 } 808 if (_build > 0) { 809 rc = jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); 810 if (rc == -1) return; 811 index += rc; 812 } 813 } 814 }