1 /* 2 * Copyright (c) 1997, 2013, 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/memReporter.hpp" 61 #include "services/memTracker.hpp" 62 #include "trace/tracing.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 99 100 101 GrowableArray<Method*>* collected_profiled_methods; 102 103 int compare_methods(Method** a, Method** b) { 104 // %%% there can be 32-bit overflow here 105 return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) 106 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); 107 } 108 109 void collect_profiled_methods(Method* m) { 110 Thread* thread = Thread::current(); 111 // This HandleMark prevents a huge amount of handles from being added 112 // to the metadata_handles() array on the thread. 113 HandleMark hm(thread); 114 methodHandle mh(thread, m); 115 if ((m->method_data() != NULL) && 116 (PrintMethodData || CompilerOracle::should_print(mh))) { 117 collected_profiled_methods->push(m); 118 } 119 } 120 121 void print_method_profiling_data() { 122 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) { 123 ResourceMark rm; 124 HandleMark hm; 125 collected_profiled_methods = new GrowableArray<Method*>(1024); 126 ClassLoaderDataGraph::methods_do(collect_profiled_methods); 127 collected_profiled_methods->sort(&compare_methods); 128 129 int count = collected_profiled_methods->length(); 130 int total_size = 0; 131 if (count > 0) { 132 for (int index = 0; index < count; index++) { 133 Method* m = collected_profiled_methods->at(index); 134 ttyLocker ttyl; 135 tty->print_cr("------------------------------------------------------------------------"); 136 m->print_invocation_count(); 137 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); 138 tty->cr(); 139 // Dump data on parameters if any 140 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) { 141 tty->fill_to(2); 142 m->method_data()->parameters_type_data()->print_data_on(tty); 143 } 144 m->print_codes(); 145 total_size += m->method_data()->size_in_bytes(); 146 } 147 tty->print_cr("------------------------------------------------------------------------"); 148 tty->print_cr("Total MDO size: %d bytes", total_size); 149 } 150 } 151 } 152 153 154 #ifndef PRODUCT 155 156 // Statistics printing (method invocation histogram) 157 158 GrowableArray<Method*>* collected_invoked_methods; 159 160 void collect_invoked_methods(Method* m) { 161 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { 162 collected_invoked_methods->push(m); 163 } 164 } 165 166 167 168 169 void print_method_invocation_histogram() { 170 ResourceMark rm; 171 HandleMark hm; 172 collected_invoked_methods = new GrowableArray<Method*>(1024); 173 SystemDictionary::methods_do(collect_invoked_methods); 174 collected_invoked_methods->sort(&compare_methods); 175 // 176 tty->cr(); 177 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff); 178 tty->cr(); 179 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); 180 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, 181 synch_total = 0, nativ_total = 0, acces_total = 0; 182 for (int index = 0; index < collected_invoked_methods->length(); index++) { 183 Method* m = collected_invoked_methods->at(index); 184 int c = m->invocation_count() + m->compiled_invocation_count(); 185 if (c >= MethodHistogramCutoff) m->print_invocation_count(); 186 int_total += m->invocation_count(); 187 comp_total += m->compiled_invocation_count(); 188 if (m->is_final()) final_total += c; 189 if (m->is_static()) static_total += c; 190 if (m->is_synchronized()) synch_total += c; 191 if (m->is_native()) nativ_total += c; 192 if (m->is_accessor()) acces_total += c; 193 } 194 tty->cr(); 195 total = int_total + comp_total; 196 tty->print_cr("Invocations summary:"); 197 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); 198 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); 199 tty->print_cr("\t%9d (100%%) total", total); 200 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); 201 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); 202 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); 203 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); 204 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); 205 tty->cr(); 206 SharedRuntime::print_call_statistics(comp_total); 207 } 208 209 void print_bytecode_count() { 210 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 211 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); 212 } 213 } 214 215 AllocStats alloc_stats; 216 217 218 219 // General statistics printing (profiling ...) 220 void print_statistics() { 221 #ifdef ASSERT 222 223 if (CountRuntimeCalls) { 224 extern Histogram *RuntimeHistogram; 225 RuntimeHistogram->print(); 226 } 227 228 if (CountJNICalls) { 229 extern Histogram *JNIHistogram; 230 JNIHistogram->print(); 231 } 232 233 if (CountJVMCalls) { 234 extern Histogram *JVMHistogram; 235 JVMHistogram->print(); 236 } 237 238 #endif 239 240 if (MemProfiling) { 241 MemProfiler::disengage(); 242 } 243 244 if (CITime) { 245 CompileBroker::print_times(); 246 } 247 248 #ifdef COMPILER1 249 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { 250 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); 251 Runtime1::print_statistics(); 252 Deoptimization::print_statistics(); 253 SharedRuntime::print_statistics(); 254 nmethod::print_statistics(); 255 } 256 #endif /* COMPILER1 */ 257 258 #ifdef COMPILER2 259 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { 260 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); 261 Compile::print_statistics(); 262 #ifndef COMPILER1 263 Deoptimization::print_statistics(); 264 nmethod::print_statistics(); 265 SharedRuntime::print_statistics(); 266 #endif //COMPILER1 267 os::print_statistics(); 268 } 269 270 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 271 OptoRuntime::print_named_counters(); 272 } 273 274 if (TimeLivenessAnalysis) { 275 MethodLiveness::print_times(); 276 } 277 #ifdef ASSERT 278 if (CollectIndexSetStatistics) { 279 IndexSet::print_statistics(); 280 } 281 #endif // ASSERT 282 #endif // COMPILER2 283 if (CountCompiledCalls) { 284 print_method_invocation_histogram(); 285 } 286 287 print_method_profiling_data(); 288 289 if (TimeCompiler) { 290 COMPILER2_PRESENT(Compile::print_timers();) 291 } 292 if (TimeCompilationPolicy) { 293 CompilationPolicy::policy()->print_time(); 294 } 295 if (TimeOopMap) { 296 GenerateOopMap::print_time(); 297 } 298 if (ProfilerCheckIntervals) { 299 PeriodicTask::print_intervals(); 300 } 301 if (PrintSymbolTableSizeHistogram) { 302 SymbolTable::print_histogram(); 303 } 304 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 305 BytecodeCounter::print(); 306 } 307 if (PrintBytecodePairHistogram) { 308 BytecodePairHistogram::print(); 309 } 310 311 if (PrintCodeCache) { 312 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 313 CodeCache::print(); 314 } 315 316 if (PrintMethodFlushingStatistics) { 317 NMethodSweeper::print(); 318 } 319 320 if (PrintCodeCache2) { 321 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 322 CodeCache::print_internals(); 323 } 324 325 if (PrintClassStatistics) { 326 SystemDictionary::print_class_statistics(); 327 } 328 if (PrintMethodStatistics) { 329 SystemDictionary::print_method_statistics(); 330 } 331 332 if (PrintVtableStats) { 333 klassVtable::print_statistics(); 334 klassItable::print_statistics(); 335 } 336 if (VerifyOops) { 337 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); 338 } 339 340 print_bytecode_count(); 341 if (PrintMallocStatistics) { 342 tty->print("allocation stats: "); 343 alloc_stats.print(); 344 tty->cr(); 345 } 346 347 if (PrintSystemDictionaryAtExit) { 348 SystemDictionary::print(); 349 } 350 351 if (PrintBiasedLockingStatistics) { 352 BiasedLocking::print_counters(); 353 } 354 355 #ifdef ENABLE_ZAP_DEAD_LOCALS 356 #ifdef COMPILER2 357 if (ZapDeadCompiledLocals) { 358 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); 359 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); 360 } 361 #endif // COMPILER2 362 #endif // ENABLE_ZAP_DEAD_LOCALS 363 // Native memory tracking data 364 if (PrintNMTStatistics) { 365 if (MemTracker::is_on()) { 366 BaselineTTYOutputer outputer(tty); 367 MemTracker::print_memory_usage(outputer, K, false); 368 } else { 369 tty->print_cr(MemTracker::reason()); 370 } 371 } 372 } 373 374 #else // PRODUCT MODE STATISTICS 375 376 void print_statistics() { 377 378 if (PrintMethodData) { 379 print_method_profiling_data(); 380 } 381 382 if (CITime) { 383 CompileBroker::print_times(); 384 } 385 386 if (PrintCodeCache) { 387 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 388 CodeCache::print(); 389 } 390 391 if (PrintMethodFlushingStatistics) { 392 NMethodSweeper::print(); 393 } 394 395 #ifdef COMPILER2 396 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 397 OptoRuntime::print_named_counters(); 398 } 399 #endif 400 if (PrintBiasedLockingStatistics) { 401 BiasedLocking::print_counters(); 402 } 403 404 // Native memory tracking data 405 if (PrintNMTStatistics) { 406 if (MemTracker::is_on()) { 407 BaselineTTYOutputer outputer(tty); 408 MemTracker::print_memory_usage(outputer, K, false); 409 } else { 410 tty->print_cr(MemTracker::reason()); 411 } 412 } 413 } 414 415 #endif 416 417 418 // Helper class for registering on_exit calls through JVM_OnExit 419 420 extern "C" { 421 typedef void (*__exit_proc)(void); 422 } 423 424 class ExitProc : public CHeapObj<mtInternal> { 425 private: 426 __exit_proc _proc; 427 // void (*_proc)(void); 428 ExitProc* _next; 429 public: 430 // ExitProc(void (*proc)(void)) { 431 ExitProc(__exit_proc proc) { 432 _proc = proc; 433 _next = NULL; 434 } 435 void evaluate() { _proc(); } 436 ExitProc* next() const { return _next; } 437 void set_next(ExitProc* next) { _next = next; } 438 }; 439 440 441 // Linked list of registered on_exit procedures 442 443 static ExitProc* exit_procs = NULL; 444 445 446 extern "C" { 447 void register_on_exit_function(void (*func)(void)) { 448 ExitProc *entry = new ExitProc(func); 449 // Classic vm does not throw an exception in case the allocation failed, 450 if (entry != NULL) { 451 entry->set_next(exit_procs); 452 exit_procs = entry; 453 } 454 } 455 } 456 457 // Note: before_exit() can be executed only once, if more than one threads 458 // are trying to shutdown the VM at the same time, only one thread 459 // can run before_exit() and all other threads must wait. 460 void before_exit(JavaThread * thread) { 461 #define BEFORE_EXIT_NOT_RUN 0 462 #define BEFORE_EXIT_RUNNING 1 463 #define BEFORE_EXIT_DONE 2 464 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; 465 466 // Note: don't use a Mutex to guard the entire before_exit(), as 467 // JVMTI post_thread_end_event and post_vm_death_event will run native code. 468 // A CAS or OSMutex would work just fine but then we need to manipulate 469 // thread state for Safepoint. Here we use Monitor wait() and notify_all() 470 // for synchronization. 471 { MutexLocker ml(BeforeExit_lock); 472 switch (_before_exit_status) { 473 case BEFORE_EXIT_NOT_RUN: 474 _before_exit_status = BEFORE_EXIT_RUNNING; 475 break; 476 case BEFORE_EXIT_RUNNING: 477 while (_before_exit_status == BEFORE_EXIT_RUNNING) { 478 BeforeExit_lock->wait(); 479 } 480 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); 481 return; 482 case BEFORE_EXIT_DONE: 483 return; 484 } 485 } 486 487 // The only difference between this and Win32's _onexit procs is that 488 // this version is invoked before any threads get killed. 489 ExitProc* current = exit_procs; 490 while (current != NULL) { 491 ExitProc* next = current->next(); 492 current->evaluate(); 493 delete current; 494 current = next; 495 } 496 497 // Hang forever on exit if we're reporting an error. 498 if (ShowMessageBoxOnError && is_error_reported()) { 499 os::infinite_sleep(); 500 } 501 502 // Stop any ongoing concurrent GC work 503 Universe::heap()->stop(); 504 505 // Terminate watcher thread - must before disenrolling any periodic task 506 if (PeriodicTask::num_tasks() > 0) 507 WatcherThread::stop(); 508 509 // Print statistics gathered (profiling ...) 510 if (Arguments::has_profile()) { 511 FlatProfiler::disengage(); 512 FlatProfiler::print(10); 513 } 514 515 // shut down the StatSampler task 516 StatSampler::disengage(); 517 StatSampler::destroy(); 518 519 // We do not need to explicitly stop concurrent GC threads because the 520 // JVM will be taken down at a safepoint when such threads are inactive -- 521 // except for some concurrent G1 threads, see (comment in) 522 // Threads::destroy_vm(). 523 524 // Print GC/heap related information. 525 if (PrintGCDetails) { 526 Universe::print(); 527 AdaptiveSizePolicyOutput(0); 528 if (Verbose) { 529 ClassLoaderDataGraph::dump_on(gclog_or_tty); 530 } 531 } 532 533 if (PrintBytecodeHistogram) { 534 BytecodeHistogram::print(); 535 } 536 537 if (JvmtiExport::should_post_thread_life()) { 538 JvmtiExport::post_thread_end(thread); 539 } 540 541 542 EventThreadEnd event; 543 if (event.should_commit()) { 544 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 545 event.commit(); 546 } 547 548 // Always call even when there are not JVMTI environments yet, since environments 549 // may be attached late and JVMTI must track phases of VM execution 550 JvmtiExport::post_vm_death(); 551 Threads::shutdown_vm_agents(); 552 553 // Terminate the signal thread 554 // Note: we don't wait until it actually dies. 555 os::terminate_signal_thread(); 556 557 print_statistics(); 558 Universe::heap()->print_tracing_info(); 559 560 { MutexLocker ml(BeforeExit_lock); 561 _before_exit_status = BEFORE_EXIT_DONE; 562 BeforeExit_lock->notify_all(); 563 } 564 565 // Shutdown NMT before exit. Otherwise, 566 // it will run into trouble when system destroys static variables. 567 MemTracker::shutdown(MemTracker::NMT_normal); 568 569 if (VerifyStringTableAtExit) { 570 int fail_cnt = 0; 571 { 572 MutexLocker ml(StringTable_lock); 573 fail_cnt = StringTable::verify_and_compare_entries(); 574 } 575 576 if (fail_cnt != 0) { 577 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); 578 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); 579 } 580 } 581 582 #undef BEFORE_EXIT_NOT_RUN 583 #undef BEFORE_EXIT_RUNNING 584 #undef BEFORE_EXIT_DONE 585 } 586 587 void vm_exit(int code) { 588 Thread* thread = ThreadLocalStorage::is_initialized() ? 589 ThreadLocalStorage::get_thread_slow() : NULL; 590 if (thread == NULL) { 591 // we have serious problems -- just exit 592 vm_direct_exit(code); 593 } 594 595 if (VMThread::vm_thread() != NULL) { 596 // Fire off a VM_Exit operation to bring VM to a safepoint and exit 597 VM_Exit op(code); 598 if (thread->is_Java_thread()) 599 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); 600 VMThread::execute(&op); 601 // should never reach here; but in case something wrong with VM Thread. 602 vm_direct_exit(code); 603 } else { 604 // VM thread is gone, just exit 605 vm_direct_exit(code); 606 } 607 ShouldNotReachHere(); 608 } 609 610 void notify_vm_shutdown() { 611 // For now, just a dtrace probe. 612 HOTSPOT_VM_SHUTDOWN(); 613 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); 614 } 615 616 void vm_direct_exit(int code) { 617 notify_vm_shutdown(); 618 os::wait_for_keypress_at_exit(); 619 ::exit(code); 620 } 621 622 void vm_perform_shutdown_actions() { 623 // Warning: do not call 'exit_globals()' here. All threads are still running. 624 // Calling 'exit_globals()' will disable thread-local-storage and cause all 625 // kinds of assertions to trigger in debug mode. 626 if (is_init_completed()) { 627 Thread* thread = ThreadLocalStorage::is_initialized() ? 628 ThreadLocalStorage::get_thread_slow() : NULL; 629 if (thread != NULL && thread->is_Java_thread()) { 630 // We are leaving the VM, set state to native (in case any OS exit 631 // handlers call back to the VM) 632 JavaThread* jt = (JavaThread*)thread; 633 // Must always be walkable or have no last_Java_frame when in 634 // thread_in_native 635 jt->frame_anchor()->make_walkable(jt); 636 jt->set_thread_state(_thread_in_native); 637 } 638 } 639 notify_vm_shutdown(); 640 } 641 642 void vm_shutdown() 643 { 644 vm_perform_shutdown_actions(); 645 os::wait_for_keypress_at_exit(); 646 os::shutdown(); 647 } 648 649 void vm_abort(bool dump_core) { 650 vm_perform_shutdown_actions(); 651 os::wait_for_keypress_at_exit(); 652 os::abort(dump_core); 653 ShouldNotReachHere(); 654 } 655 656 void vm_notify_during_shutdown(const char* error, const char* message) { 657 if (error != NULL) { 658 tty->print_cr("Error occurred during initialization of VM"); 659 tty->print("%s", error); 660 if (message != NULL) { 661 tty->print_cr(": %s", message); 662 } 663 else { 664 tty->cr(); 665 } 666 } 667 if (ShowMessageBoxOnError && WizardMode) { 668 fatal("Error occurred during initialization of VM"); 669 } 670 } 671 672 void vm_exit_during_initialization(Handle exception) { 673 tty->print_cr("Error occurred during initialization of VM"); 674 // If there are exceptions on this thread it must be cleared 675 // first and here. Any future calls to EXCEPTION_MARK requires 676 // that no pending exceptions exist. 677 Thread *THREAD = Thread::current(); 678 if (HAS_PENDING_EXCEPTION) { 679 CLEAR_PENDING_EXCEPTION; 680 } 681 java_lang_Throwable::print(exception, tty); 682 tty->cr(); 683 java_lang_Throwable::print_stack_trace(exception(), tty); 684 tty->cr(); 685 vm_notify_during_shutdown(NULL, NULL); 686 687 // Failure during initialization, we don't want to dump core 688 vm_abort(false); 689 } 690 691 void vm_exit_during_initialization(Symbol* ex, const char* message) { 692 ResourceMark rm; 693 vm_notify_during_shutdown(ex->as_C_string(), message); 694 695 // Failure during initialization, we don't want to dump core 696 vm_abort(false); 697 } 698 699 void vm_exit_during_initialization(const char* error, const char* message) { 700 vm_notify_during_shutdown(error, message); 701 702 // Failure during initialization, we don't want to dump core 703 vm_abort(false); 704 } 705 706 void vm_shutdown_during_initialization(const char* error, const char* message) { 707 vm_notify_during_shutdown(error, message); 708 vm_shutdown(); 709 } 710 711 JDK_Version JDK_Version::_current; 712 const char* JDK_Version::_runtime_name; 713 const char* JDK_Version::_runtime_version; 714 715 void JDK_Version::initialize() { 716 jdk_version_info info; 717 assert(!_current.is_valid(), "Don't initialize twice"); 718 719 void *lib_handle = os::native_java_library(); 720 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, 721 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); 722 723 if (func == NULL) { 724 // JDK older than 1.6 725 _current._partially_initialized = true; 726 } else { 727 (*func)(&info, sizeof(info)); 728 729 int major = JDK_VERSION_MAJOR(info.jdk_version); 730 int minor = JDK_VERSION_MINOR(info.jdk_version); 731 int micro = JDK_VERSION_MICRO(info.jdk_version); 732 int build = JDK_VERSION_BUILD(info.jdk_version); 733 if (major == 1 && minor > 4) { 734 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. 735 major = minor; 736 minor = micro; 737 micro = 0; 738 } 739 _current = JDK_Version(major, minor, micro, info.update_version, 740 info.special_update_version, build, 741 info.thread_park_blocker == 1, 742 info.post_vm_init_hook_enabled == 1, 743 info.pending_list_uses_discovered_field == 1); 744 } 745 } 746 747 void JDK_Version::fully_initialize( 748 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { 749 // This is only called when current is less than 1.6 and we've gotten 750 // far enough in the initialization to determine the exact version. 751 assert(major < 6, "not needed for JDK version >= 6"); 752 assert(is_partially_initialized(), "must not initialize"); 753 if (major < 5) { 754 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. 755 micro = minor; 756 minor = major; 757 major = 1; 758 } 759 _current = JDK_Version(major, minor, micro, update); 760 } 761 762 void JDK_Version_init() { 763 JDK_Version::initialize(); 764 } 765 766 static int64_t encode_jdk_version(const JDK_Version& v) { 767 return 768 ((int64_t)v.major_version() << (BitsPerByte * 5)) | 769 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | 770 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | 771 ((int64_t)v.update_version() << (BitsPerByte * 2)) | 772 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | 773 ((int64_t)v.build_number() << (BitsPerByte * 0)); 774 } 775 776 int JDK_Version::compare(const JDK_Version& other) const { 777 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); 778 if (!is_partially_initialized() && other.is_partially_initialized()) { 779 return -(other.compare(*this)); // flip the comparators 780 } 781 assert(!other.is_partially_initialized(), "Not initialized yet"); 782 if (is_partially_initialized()) { 783 assert(other.major_version() >= 6, 784 "Invalid JDK version comparison during initialization"); 785 return -1; 786 } else { 787 uint64_t e = encode_jdk_version(*this); 788 uint64_t o = encode_jdk_version(other); 789 return (e > o) ? 1 : ((e == o) ? 0 : -1); 790 } 791 } 792 793 void JDK_Version::to_string(char* buffer, size_t buflen) const { 794 size_t index = 0; 795 if (!is_valid()) { 796 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); 797 } else if (is_partially_initialized()) { 798 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); 799 } else { 800 index += jio_snprintf( 801 &buffer[index], buflen - index, "%d.%d", _major, _minor); 802 if (_micro > 0) { 803 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); 804 } 805 if (_update > 0) { 806 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); 807 } 808 if (_special > 0) { 809 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special); 810 } 811 if (_build > 0) { 812 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); 813 } 814 } 815 }