1 /* 2 * Copyright (c) 1997, 2014, 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/stringTable.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 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 101 102 GrowableArray<Method*>* collected_profiled_methods; 103 104 int compare_methods(Method** a, Method** b) { 105 // %%% there can be 32-bit overflow here 106 return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) 107 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); 108 } 109 110 void collect_profiled_methods(Method* m) { 111 Thread* thread = Thread::current(); 112 // This HandleMark prevents a huge amount of handles from being added 113 // to the metadata_handles() array on the thread. 114 HandleMark hm(thread); 115 methodHandle mh(thread, m); 116 if ((m->method_data() != NULL) && 117 (PrintMethodData || CompilerOracle::should_print(mh))) { 118 collected_profiled_methods->push(m); 119 } 120 } 121 122 void print_method_profiling_data() { 123 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData) && 124 (PrintMethodData || CompilerOracle::should_print_methods())) { 125 ResourceMark rm; 126 HandleMark hm; 127 collected_profiled_methods = new GrowableArray<Method*>(1024); 128 ClassLoaderDataGraph::methods_do(collect_profiled_methods); 129 collected_profiled_methods->sort(&compare_methods); 130 131 int count = collected_profiled_methods->length(); 132 int total_size = 0; 133 if (count > 0) { 134 for (int index = 0; index < count; index++) { 135 Method* m = collected_profiled_methods->at(index); 136 ttyLocker ttyl; 137 tty->print_cr("------------------------------------------------------------------------"); 138 m->print_invocation_count(); 139 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); 140 tty->cr(); 141 // Dump data on parameters if any 142 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) { 143 tty->fill_to(2); 144 m->method_data()->parameters_type_data()->print_data_on(tty); 145 } 146 m->print_codes(); 147 total_size += m->method_data()->size_in_bytes(); 148 } 149 tty->print_cr("------------------------------------------------------------------------"); 150 tty->print_cr("Total MDO size: %d bytes", total_size); 151 } 152 } 153 } 154 155 156 #ifndef PRODUCT 157 158 // Statistics printing (method invocation histogram) 159 160 GrowableArray<Method*>* collected_invoked_methods; 161 162 void collect_invoked_methods(Method* m) { 163 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { 164 collected_invoked_methods->push(m); 165 } 166 } 167 168 169 170 171 void print_method_invocation_histogram() { 172 ResourceMark rm; 173 HandleMark hm; 174 collected_invoked_methods = new GrowableArray<Method*>(1024); 175 SystemDictionary::methods_do(collect_invoked_methods); 176 collected_invoked_methods->sort(&compare_methods); 177 // 178 tty->cr(); 179 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff); 180 tty->cr(); 181 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); 182 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, 183 synch_total = 0, nativ_total = 0, acces_total = 0; 184 for (int index = 0; index < collected_invoked_methods->length(); index++) { 185 Method* m = collected_invoked_methods->at(index); 186 int c = m->invocation_count() + m->compiled_invocation_count(); 187 if (c >= MethodHistogramCutoff) m->print_invocation_count(); 188 int_total += m->invocation_count(); 189 comp_total += m->compiled_invocation_count(); 190 if (m->is_final()) final_total += c; 191 if (m->is_static()) static_total += c; 192 if (m->is_synchronized()) synch_total += c; 193 if (m->is_native()) nativ_total += c; 194 if (m->is_accessor()) acces_total += c; 195 } 196 tty->cr(); 197 total = int_total + comp_total; 198 tty->print_cr("Invocations summary:"); 199 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); 200 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); 201 tty->print_cr("\t%9d (100%%) total", total); 202 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); 203 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); 204 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); 205 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); 206 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); 207 tty->cr(); 208 SharedRuntime::print_call_statistics(comp_total); 209 } 210 211 void print_bytecode_count() { 212 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 213 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); 214 } 215 } 216 217 AllocStats alloc_stats; 218 219 220 221 // General statistics printing (profiling ...) 222 void print_statistics() { 223 #ifdef ASSERT 224 225 if (CountRuntimeCalls) { 226 extern Histogram *RuntimeHistogram; 227 RuntimeHistogram->print(); 228 } 229 230 if (CountJNICalls) { 231 extern Histogram *JNIHistogram; 232 JNIHistogram->print(); 233 } 234 235 if (CountJVMCalls) { 236 extern Histogram *JVMHistogram; 237 JVMHistogram->print(); 238 } 239 240 #endif 241 242 if (MemProfiling) { 243 MemProfiler::disengage(); 244 } 245 246 if (CITime) { 247 CompileBroker::print_times(); 248 } 249 250 #ifdef COMPILER1 251 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { 252 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); 253 Runtime1::print_statistics(); 254 Deoptimization::print_statistics(); 255 SharedRuntime::print_statistics(); 256 nmethod::print_statistics(); 257 } 258 #endif /* COMPILER1 */ 259 260 #ifdef COMPILER2 261 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { 262 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); 263 Compile::print_statistics(); 264 #ifndef COMPILER1 265 Deoptimization::print_statistics(); 266 nmethod::print_statistics(); 267 SharedRuntime::print_statistics(); 268 #endif //COMPILER1 269 os::print_statistics(); 270 } 271 272 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 273 OptoRuntime::print_named_counters(); 274 } 275 276 if (TimeLivenessAnalysis) { 277 MethodLiveness::print_times(); 278 } 279 #ifdef ASSERT 280 if (CollectIndexSetStatistics) { 281 IndexSet::print_statistics(); 282 } 283 #endif // ASSERT 284 #endif // COMPILER2 285 if (CountCompiledCalls) { 286 print_method_invocation_histogram(); 287 } 288 289 print_method_profiling_data(); 290 291 if (TimeCompiler) { 292 COMPILER2_PRESENT(Compile::print_timers();) 293 } 294 if (TimeCompilationPolicy) { 295 CompilationPolicy::policy()->print_time(); 296 } 297 if (TimeOopMap) { 298 GenerateOopMap::print_time(); 299 } 300 if (ProfilerCheckIntervals) { 301 PeriodicTask::print_intervals(); 302 } 303 if (PrintSymbolTableSizeHistogram) { 304 SymbolTable::print_histogram(); 305 } 306 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 307 BytecodeCounter::print(); 308 } 309 if (PrintBytecodePairHistogram) { 310 BytecodePairHistogram::print(); 311 } 312 313 if (PrintCodeCache) { 314 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 315 CodeCache::print(); 316 } 317 318 if (PrintMethodFlushingStatistics) { 319 NMethodSweeper::print(); 320 } 321 322 if (PrintCodeCache2) { 323 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 324 CodeCache::print_internals(); 325 } 326 327 if (PrintClassStatistics) { 328 SystemDictionary::print_class_statistics(); 329 } 330 if (PrintMethodStatistics) { 331 SystemDictionary::print_method_statistics(); 332 } 333 334 if (PrintVtableStats) { 335 klassVtable::print_statistics(); 336 klassItable::print_statistics(); 337 } 338 if (VerifyOops) { 339 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); 340 } 341 342 print_bytecode_count(); 343 if (PrintMallocStatistics) { 344 tty->print("allocation stats: "); 345 alloc_stats.print(); 346 tty->cr(); 347 } 348 349 if (PrintSystemDictionaryAtExit) { 350 SystemDictionary::print(); 351 } 352 353 if (PrintBiasedLockingStatistics) { 354 BiasedLocking::print_counters(); 355 } 356 357 #ifdef ENABLE_ZAP_DEAD_LOCALS 358 #ifdef COMPILER2 359 if (ZapDeadCompiledLocals) { 360 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); 361 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); 362 } 363 #endif // COMPILER2 364 #endif // ENABLE_ZAP_DEAD_LOCALS 365 // Native memory tracking data 366 if (PrintNMTStatistics) { 367 if (MemTracker::is_on()) { 368 BaselineTTYOutputer outputer(tty); 369 MemTracker::print_memory_usage(outputer, K, false); 370 } else { 371 tty->print_cr("%s", MemTracker::reason()); 372 } 373 } 374 } 375 376 #else // PRODUCT MODE STATISTICS 377 378 void print_statistics() { 379 380 if (PrintMethodData) { 381 print_method_profiling_data(); 382 } 383 384 if (CITime) { 385 CompileBroker::print_times(); 386 } 387 388 if (PrintCodeCache) { 389 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 390 CodeCache::print(); 391 } 392 393 if (PrintMethodFlushingStatistics) { 394 NMethodSweeper::print(); 395 } 396 397 #ifdef COMPILER2 398 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 399 OptoRuntime::print_named_counters(); 400 } 401 #endif 402 if (PrintBiasedLockingStatistics) { 403 BiasedLocking::print_counters(); 404 } 405 406 // Native memory tracking data 407 if (PrintNMTStatistics) { 408 if (MemTracker::is_on()) { 409 BaselineTTYOutputer outputer(tty); 410 MemTracker::print_memory_usage(outputer, K, false); 411 } else { 412 tty->print_cr("%s", MemTracker::reason()); 413 } 414 } 415 } 416 417 #endif 418 419 420 // Helper class for registering on_exit calls through JVM_OnExit 421 422 extern "C" { 423 typedef void (*__exit_proc)(void); 424 } 425 426 class ExitProc : public CHeapObj<mtInternal> { 427 private: 428 __exit_proc _proc; 429 // void (*_proc)(void); 430 ExitProc* _next; 431 public: 432 // ExitProc(void (*proc)(void)) { 433 ExitProc(__exit_proc proc) { 434 _proc = proc; 435 _next = NULL; 436 } 437 void evaluate() { _proc(); } 438 ExitProc* next() const { return _next; } 439 void set_next(ExitProc* next) { _next = next; } 440 }; 441 442 443 // Linked list of registered on_exit procedures 444 445 static ExitProc* exit_procs = NULL; 446 447 448 extern "C" { 449 void register_on_exit_function(void (*func)(void)) { 450 ExitProc *entry = new ExitProc(func); 451 // Classic vm does not throw an exception in case the allocation failed, 452 if (entry != NULL) { 453 entry->set_next(exit_procs); 454 exit_procs = entry; 455 } 456 } 457 } 458 459 // Note: before_exit() can be executed only once, if more than one threads 460 // are trying to shutdown the VM at the same time, only one thread 461 // can run before_exit() and all other threads must wait. 462 void before_exit(JavaThread * thread) { 463 #define BEFORE_EXIT_NOT_RUN 0 464 #define BEFORE_EXIT_RUNNING 1 465 #define BEFORE_EXIT_DONE 2 466 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; 467 468 // Note: don't use a Mutex to guard the entire before_exit(), as 469 // JVMTI post_thread_end_event and post_vm_death_event will run native code. 470 // A CAS or OSMutex would work just fine but then we need to manipulate 471 // thread state for Safepoint. Here we use Monitor wait() and notify_all() 472 // for synchronization. 473 { MutexLocker ml(BeforeExit_lock); 474 switch (_before_exit_status) { 475 case BEFORE_EXIT_NOT_RUN: 476 _before_exit_status = BEFORE_EXIT_RUNNING; 477 break; 478 case BEFORE_EXIT_RUNNING: 479 while (_before_exit_status == BEFORE_EXIT_RUNNING) { 480 BeforeExit_lock->wait(); 481 } 482 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); 483 return; 484 case BEFORE_EXIT_DONE: 485 return; 486 } 487 } 488 489 // The only difference between this and Win32's _onexit procs is that 490 // this version is invoked before any threads get killed. 491 ExitProc* current = exit_procs; 492 while (current != NULL) { 493 ExitProc* next = current->next(); 494 current->evaluate(); 495 delete current; 496 current = next; 497 } 498 499 // Hang forever on exit if we're reporting an error. 500 if (ShowMessageBoxOnError && is_error_reported()) { 501 os::infinite_sleep(); 502 } 503 504 // Terminate watcher thread - must before disenrolling any periodic task 505 if (PeriodicTask::num_tasks() > 0) 506 WatcherThread::stop(); 507 508 // Print statistics gathered (profiling ...) 509 if (Arguments::has_profile()) { 510 FlatProfiler::disengage(); 511 FlatProfiler::print(10); 512 } 513 514 // shut down the StatSampler task 515 StatSampler::disengage(); 516 StatSampler::destroy(); 517 518 // Stop concurrent GC threads 519 Universe::heap()->stop(); 520 521 // Print GC/heap related information. 522 if (PrintGCDetails) { 523 Universe::print(); 524 AdaptiveSizePolicyOutput(0); 525 if (Verbose) { 526 ClassLoaderDataGraph::dump_on(gclog_or_tty); 527 } 528 } 529 530 if (PrintBytecodeHistogram) { 531 BytecodeHistogram::print(); 532 } 533 534 if (JvmtiExport::should_post_thread_life()) { 535 JvmtiExport::post_thread_end(thread); 536 } 537 538 539 EventThreadEnd event; 540 if (event.should_commit()) { 541 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 542 event.commit(); 543 } 544 545 // Always call even when there are not JVMTI environments yet, since environments 546 // may be attached late and JVMTI must track phases of VM execution 547 JvmtiExport::post_vm_death(); 548 Threads::shutdown_vm_agents(); 549 550 // Terminate the signal thread 551 // Note: we don't wait until it actually dies. 552 os::terminate_signal_thread(); 553 554 print_statistics(); 555 Universe::heap()->print_tracing_info(); 556 557 { MutexLocker ml(BeforeExit_lock); 558 _before_exit_status = BEFORE_EXIT_DONE; 559 BeforeExit_lock->notify_all(); 560 } 561 562 // Shutdown NMT before exit. Otherwise, 563 // it will run into trouble when system destroys static variables. 564 MemTracker::shutdown(MemTracker::NMT_normal); 565 566 if (VerifyStringTableAtExit) { 567 int fail_cnt = 0; 568 { 569 MutexLocker ml(StringTable_lock); 570 fail_cnt = StringTable::verify_and_compare_entries(); 571 } 572 573 if (fail_cnt != 0) { 574 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); 575 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); 576 } 577 } 578 579 #undef BEFORE_EXIT_NOT_RUN 580 #undef BEFORE_EXIT_RUNNING 581 #undef BEFORE_EXIT_DONE 582 } 583 584 void vm_exit(int code) { 585 Thread* thread = ThreadLocalStorage::is_initialized() ? 586 ThreadLocalStorage::get_thread_slow() : NULL; 587 if (thread == NULL) { 588 // we have serious problems -- just exit 589 vm_direct_exit(code); 590 } 591 592 if (VMThread::vm_thread() != NULL) { 593 // Fire off a VM_Exit operation to bring VM to a safepoint and exit 594 VM_Exit op(code); 595 if (thread->is_Java_thread()) 596 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); 597 VMThread::execute(&op); 598 // should never reach here; but in case something wrong with VM Thread. 599 vm_direct_exit(code); 600 } else { 601 // VM thread is gone, just exit 602 vm_direct_exit(code); 603 } 604 ShouldNotReachHere(); 605 } 606 607 void notify_vm_shutdown() { 608 // For now, just a dtrace probe. 609 HOTSPOT_VM_SHUTDOWN(); 610 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); 611 } 612 613 void vm_direct_exit(int code) { 614 notify_vm_shutdown(); 615 os::wait_for_keypress_at_exit(); 616 ::exit(code); 617 } 618 619 void vm_perform_shutdown_actions() { 620 // Warning: do not call 'exit_globals()' here. All threads are still running. 621 // Calling 'exit_globals()' will disable thread-local-storage and cause all 622 // kinds of assertions to trigger in debug mode. 623 if (is_init_completed()) { 624 Thread* thread = ThreadLocalStorage::is_initialized() ? 625 ThreadLocalStorage::get_thread_slow() : NULL; 626 if (thread != NULL && thread->is_Java_thread()) { 627 // We are leaving the VM, set state to native (in case any OS exit 628 // handlers call back to the VM) 629 JavaThread* jt = (JavaThread*)thread; 630 // Must always be walkable or have no last_Java_frame when in 631 // thread_in_native 632 jt->frame_anchor()->make_walkable(jt); 633 jt->set_thread_state(_thread_in_native); 634 } 635 } 636 notify_vm_shutdown(); 637 } 638 639 void vm_shutdown() 640 { 641 vm_perform_shutdown_actions(); 642 os::wait_for_keypress_at_exit(); 643 os::shutdown(); 644 } 645 646 void vm_abort(bool dump_core) { 647 vm_perform_shutdown_actions(); 648 os::wait_for_keypress_at_exit(); 649 os::abort(dump_core); 650 ShouldNotReachHere(); 651 } 652 653 void vm_notify_during_shutdown(const char* error, const char* message) { 654 if (error != NULL) { 655 tty->print_cr("Error occurred during initialization of VM"); 656 tty->print("%s", error); 657 if (message != NULL) { 658 tty->print_cr(": %s", message); 659 } 660 else { 661 tty->cr(); 662 } 663 } 664 if (ShowMessageBoxOnError && WizardMode) { 665 fatal("Error occurred during initialization of VM"); 666 } 667 } 668 669 void vm_exit_during_initialization(Handle exception) { 670 tty->print_cr("Error occurred during initialization of VM"); 671 // If there are exceptions on this thread it must be cleared 672 // first and here. Any future calls to EXCEPTION_MARK requires 673 // that no pending exceptions exist. 674 Thread *THREAD = Thread::current(); 675 if (HAS_PENDING_EXCEPTION) { 676 CLEAR_PENDING_EXCEPTION; 677 } 678 java_lang_Throwable::print(exception, tty); 679 tty->cr(); 680 java_lang_Throwable::print_stack_trace(exception(), tty); 681 tty->cr(); 682 vm_notify_during_shutdown(NULL, NULL); 683 684 // Failure during initialization, we don't want to dump core 685 vm_abort(false); 686 } 687 688 void vm_exit_during_initialization(Symbol* ex, const char* message) { 689 ResourceMark rm; 690 vm_notify_during_shutdown(ex->as_C_string(), message); 691 692 // Failure during initialization, we don't want to dump core 693 vm_abort(false); 694 } 695 696 void vm_exit_during_initialization(const char* error, const char* message) { 697 vm_notify_during_shutdown(error, message); 698 699 // Failure during initialization, we don't want to dump core 700 vm_abort(false); 701 } 702 703 void vm_shutdown_during_initialization(const char* error, const char* message) { 704 vm_notify_during_shutdown(error, message); 705 vm_shutdown(); 706 } 707 708 JDK_Version JDK_Version::_current; 709 const char* JDK_Version::_runtime_name; 710 const char* JDK_Version::_runtime_version; 711 712 void JDK_Version::initialize() { 713 jdk_version_info info; 714 assert(!_current.is_valid(), "Don't initialize twice"); 715 716 void *lib_handle = os::native_java_library(); 717 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, 718 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); 719 720 if (func == NULL) { 721 // JDK older than 1.6 722 _current._partially_initialized = true; 723 } else { 724 (*func)(&info, sizeof(info)); 725 726 int major = JDK_VERSION_MAJOR(info.jdk_version); 727 int minor = JDK_VERSION_MINOR(info.jdk_version); 728 int micro = JDK_VERSION_MICRO(info.jdk_version); 729 int build = JDK_VERSION_BUILD(info.jdk_version); 730 if (major == 1 && minor > 4) { 731 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. 732 major = minor; 733 minor = micro; 734 micro = 0; 735 } 736 _current = JDK_Version(major, minor, micro, info.update_version, 737 info.special_update_version, build, 738 info.thread_park_blocker == 1, 739 info.post_vm_init_hook_enabled == 1, 740 info.pending_list_uses_discovered_field == 1); 741 } 742 } 743 744 void JDK_Version::fully_initialize( 745 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { 746 // This is only called when current is less than 1.6 and we've gotten 747 // far enough in the initialization to determine the exact version. 748 assert(major < 6, "not needed for JDK version >= 6"); 749 assert(is_partially_initialized(), "must not initialize"); 750 if (major < 5) { 751 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. 752 micro = minor; 753 minor = major; 754 major = 1; 755 } 756 _current = JDK_Version(major, minor, micro, update); 757 } 758 759 void JDK_Version_init() { 760 JDK_Version::initialize(); 761 } 762 763 static int64_t encode_jdk_version(const JDK_Version& v) { 764 return 765 ((int64_t)v.major_version() << (BitsPerByte * 5)) | 766 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | 767 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | 768 ((int64_t)v.update_version() << (BitsPerByte * 2)) | 769 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | 770 ((int64_t)v.build_number() << (BitsPerByte * 0)); 771 } 772 773 int JDK_Version::compare(const JDK_Version& other) const { 774 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); 775 if (!is_partially_initialized() && other.is_partially_initialized()) { 776 return -(other.compare(*this)); // flip the comparators 777 } 778 assert(!other.is_partially_initialized(), "Not initialized yet"); 779 if (is_partially_initialized()) { 780 assert(other.major_version() >= 6, 781 "Invalid JDK version comparison during initialization"); 782 return -1; 783 } else { 784 uint64_t e = encode_jdk_version(*this); 785 uint64_t o = encode_jdk_version(other); 786 return (e > o) ? 1 : ((e == o) ? 0 : -1); 787 } 788 } 789 790 void JDK_Version::to_string(char* buffer, size_t buflen) const { 791 size_t index = 0; 792 if (!is_valid()) { 793 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); 794 } else if (is_partially_initialized()) { 795 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); 796 } else { 797 index += jio_snprintf( 798 &buffer[index], buflen - index, "%d.%d", _major, _minor); 799 if (_micro > 0) { 800 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); 801 } 802 if (_update > 0) { 803 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); 804 } 805 if (_special > 0) { 806 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special); 807 } 808 if (_build > 0) { 809 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); 810 } 811 } 812 }