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/deoptimization.hpp" 51 #include "runtime/fprofiler.hpp" 52 #include "runtime/init.hpp" 53 #include "runtime/interfaceSupport.hpp" 54 #include "runtime/java.hpp" 55 #include "runtime/memprofiler.hpp" 56 #include "runtime/sharedRuntime.hpp" 57 #include "runtime/statSampler.hpp" 58 #include "runtime/sweeper.hpp" 59 #include "runtime/task.hpp" 60 #include "runtime/thread.inline.hpp" 61 #include "runtime/timer.hpp" 62 #include "runtime/vm_operations.hpp" 63 #include "services/memTracker.hpp" 64 #include "utilities/dtrace.hpp" 65 #include "utilities/globalDefinitions.hpp" 66 #include "utilities/histogram.hpp" 67 #include "utilities/macros.hpp" 68 #include "utilities/vmError.hpp" 69 #ifdef TARGET_ARCH_x86 70 # include "vm_version_x86.hpp" 71 #endif 72 #ifdef TARGET_ARCH_sparc 73 # include "vm_version_sparc.hpp" 74 #endif 75 #ifdef TARGET_ARCH_zero 76 # include "vm_version_zero.hpp" 77 #endif 78 #ifdef TARGET_ARCH_arm 79 # include "vm_version_arm.hpp" 80 #endif 81 #ifdef TARGET_ARCH_ppc 82 # include "vm_version_ppc.hpp" 83 #endif 84 #if INCLUDE_ALL_GCS 85 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp" 86 #include "gc_implementation/parallelScavenge/psScavenge.hpp" 87 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" 88 #endif // INCLUDE_ALL_GCS 89 #ifdef COMPILER1 90 #include "c1/c1_Compiler.hpp" 91 #include "c1/c1_Runtime1.hpp" 92 #endif 93 #ifdef COMPILER2 94 #include "code/compiledIC.hpp" 95 #include "compiler/methodLiveness.hpp" 96 #include "opto/compile.hpp" 97 #include "opto/indexSet.hpp" 98 #include "opto/runtime.hpp" 99 #endif 100 #if INCLUDE_JFR 101 #include "jfr/jfr.hpp" 102 #endif 103 104 #ifndef USDT2 105 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown); 106 #endif /* !USDT2 */ 107 108 #ifndef PRODUCT 109 110 // Statistics printing (method invocation histogram) 111 112 GrowableArray<Method*>* collected_invoked_methods; 113 114 void collect_invoked_methods(Method* m) { 115 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { 116 collected_invoked_methods->push(m); 117 } 118 } 119 120 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 121 122 GrowableArray<Method*>* collected_profiled_methods; 123 124 void collect_profiled_methods(Method* m) { 125 Thread* thread = Thread::current(); 126 // This HandleMark prevents a huge amount of handles from being added 127 // to the metadata_handles() array on the thread. 128 HandleMark hm(thread); 129 methodHandle mh(thread, m); 130 if ((m->method_data() != NULL) && 131 (PrintMethodData || CompilerOracle::should_print(mh))) { 132 collected_profiled_methods->push(m); 133 } 134 } 135 136 137 int compare_methods(Method** a, Method** b) { 138 // %%% there can be 32-bit overflow here 139 return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) 140 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); 141 } 142 143 144 void print_method_invocation_histogram() { 145 ResourceMark rm; 146 HandleMark hm; 147 collected_invoked_methods = new GrowableArray<Method*>(1024); 148 SystemDictionary::methods_do(collect_invoked_methods); 149 collected_invoked_methods->sort(&compare_methods); 150 // 151 tty->cr(); 152 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff); 153 tty->cr(); 154 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); 155 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, 156 synch_total = 0, nativ_total = 0, acces_total = 0; 157 for (int index = 0; index < collected_invoked_methods->length(); index++) { 158 Method* m = collected_invoked_methods->at(index); 159 int c = m->invocation_count() + m->compiled_invocation_count(); 160 if (c >= MethodHistogramCutoff) m->print_invocation_count(); 161 int_total += m->invocation_count(); 162 comp_total += m->compiled_invocation_count(); 163 if (m->is_final()) final_total += c; 164 if (m->is_static()) static_total += c; 165 if (m->is_synchronized()) synch_total += c; 166 if (m->is_native()) nativ_total += c; 167 if (m->is_accessor()) acces_total += c; 168 } 169 tty->cr(); 170 total = int_total + comp_total; 171 tty->print_cr("Invocations summary:"); 172 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); 173 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); 174 tty->print_cr("\t%9d (100%%) total", total); 175 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); 176 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); 177 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); 178 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); 179 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); 180 tty->cr(); 181 SharedRuntime::print_call_statistics(comp_total); 182 } 183 184 void print_method_profiling_data() { 185 ResourceMark rm; 186 HandleMark hm; 187 collected_profiled_methods = new GrowableArray<Method*>(1024); 188 SystemDictionary::methods_do(collect_profiled_methods); 189 collected_profiled_methods->sort(&compare_methods); 190 191 int count = collected_profiled_methods->length(); 192 int total_size = 0; 193 if (count > 0) { 194 for (int index = 0; index < count; index++) { 195 Method* m = collected_profiled_methods->at(index); 196 ttyLocker ttyl; 197 tty->print_cr("------------------------------------------------------------------------"); 198 //m->print_name(tty); 199 m->print_invocation_count(); 200 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); 201 tty->cr(); 202 // Dump data on parameters if any 203 if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) { 204 tty->fill_to(2); 205 m->method_data()->parameters_type_data()->print_data_on(tty); 206 } 207 m->print_codes(); 208 total_size += m->method_data()->size_in_bytes(); 209 } 210 tty->print_cr("------------------------------------------------------------------------"); 211 tty->print_cr("Total MDO size: %d bytes", total_size); 212 } 213 } 214 215 void print_bytecode_count() { 216 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 217 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); 218 } 219 } 220 221 AllocStats alloc_stats; 222 223 224 225 // General statistics printing (profiling ...) 226 void print_statistics() { 227 #ifdef ASSERT 228 229 if (CountRuntimeCalls) { 230 extern Histogram *RuntimeHistogram; 231 RuntimeHistogram->print(); 232 } 233 234 if (CountJNICalls) { 235 extern Histogram *JNIHistogram; 236 JNIHistogram->print(); 237 } 238 239 if (CountJVMCalls) { 240 extern Histogram *JVMHistogram; 241 JVMHistogram->print(); 242 } 243 244 #endif 245 246 if (MemProfiling) { 247 MemProfiler::disengage(); 248 } 249 250 if (CITime) { 251 CompileBroker::print_times(); 252 } 253 254 #ifdef COMPILER1 255 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { 256 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); 257 Runtime1::print_statistics(); 258 Deoptimization::print_statistics(); 259 SharedRuntime::print_statistics(); 260 nmethod::print_statistics(); 261 } 262 #endif /* COMPILER1 */ 263 264 #ifdef COMPILER2 265 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { 266 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); 267 Compile::print_statistics(); 268 #ifndef COMPILER1 269 Deoptimization::print_statistics(); 270 nmethod::print_statistics(); 271 SharedRuntime::print_statistics(); 272 #endif //COMPILER1 273 os::print_statistics(); 274 } 275 276 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 277 OptoRuntime::print_named_counters(); 278 } 279 280 if (TimeLivenessAnalysis) { 281 MethodLiveness::print_times(); 282 } 283 #ifdef ASSERT 284 if (CollectIndexSetStatistics) { 285 IndexSet::print_statistics(); 286 } 287 #endif // ASSERT 288 #endif // COMPILER2 289 if (CountCompiledCalls) { 290 print_method_invocation_histogram(); 291 } 292 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) { 293 print_method_profiling_data(); 294 } 295 if (TimeCompiler) { 296 COMPILER2_PRESENT(Compile::print_timers();) 297 } 298 if (TimeCompilationPolicy) { 299 CompilationPolicy::policy()->print_time(); 300 } 301 if (TimeOopMap) { 302 GenerateOopMap::print_time(); 303 } 304 if (ProfilerCheckIntervals) { 305 PeriodicTask::print_intervals(); 306 } 307 if (PrintSymbolTableSizeHistogram) { 308 SymbolTable::print_histogram(); 309 } 310 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 311 BytecodeCounter::print(); 312 } 313 if (PrintBytecodePairHistogram) { 314 BytecodePairHistogram::print(); 315 } 316 317 if (PrintCodeCache) { 318 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 319 CodeCache::print(); 320 } 321 322 if (PrintMethodFlushingStatistics) { 323 NMethodSweeper::print(); 324 } 325 326 if (PrintCodeCache2) { 327 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 328 CodeCache::print_internals(); 329 } 330 331 if (PrintClassStatistics) { 332 SystemDictionary::print_class_statistics(); 333 } 334 if (PrintMethodStatistics) { 335 SystemDictionary::print_method_statistics(); 336 } 337 338 if (PrintVtableStats) { 339 klassVtable::print_statistics(); 340 klassItable::print_statistics(); 341 } 342 if (VerifyOops && Verbose) { 343 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); 344 } 345 346 print_bytecode_count(); 347 if (PrintMallocStatistics) { 348 tty->print("allocation stats: "); 349 alloc_stats.print(); 350 tty->cr(); 351 } 352 353 if (PrintSystemDictionaryAtExit) { 354 SystemDictionary::print(); 355 } 356 357 if (PrintBiasedLockingStatistics) { 358 BiasedLocking::print_counters(); 359 } 360 361 #ifdef ENABLE_ZAP_DEAD_LOCALS 362 #ifdef COMPILER2 363 if (ZapDeadCompiledLocals) { 364 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); 365 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); 366 } 367 #endif // COMPILER2 368 #endif // ENABLE_ZAP_DEAD_LOCALS 369 // Native memory tracking data 370 if (PrintNMTStatistics) { 371 MemTracker::final_report(tty); 372 } 373 } 374 375 #else // PRODUCT MODE STATISTICS 376 377 void print_statistics() { 378 379 if (CITime) { 380 CompileBroker::print_times(); 381 } 382 383 if (PrintCodeCache) { 384 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 385 CodeCache::print(); 386 } 387 388 if (PrintMethodFlushingStatistics) { 389 NMethodSweeper::print(); 390 } 391 392 #ifdef COMPILER2 393 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { 394 OptoRuntime::print_named_counters(); 395 } 396 #endif 397 if (PrintBiasedLockingStatistics) { 398 BiasedLocking::print_counters(); 399 } 400 401 // Native memory tracking data 402 if (PrintNMTStatistics) { 403 MemTracker::final_report(tty); 404 } 405 } 406 407 #endif 408 409 410 // Helper class for registering on_exit calls through JVM_OnExit 411 412 extern "C" { 413 typedef void (*__exit_proc)(void); 414 } 415 416 class ExitProc : public CHeapObj<mtInternal> { 417 private: 418 __exit_proc _proc; 419 // void (*_proc)(void); 420 ExitProc* _next; 421 public: 422 // ExitProc(void (*proc)(void)) { 423 ExitProc(__exit_proc proc) { 424 _proc = proc; 425 _next = NULL; 426 } 427 void evaluate() { _proc(); } 428 ExitProc* next() const { return _next; } 429 void set_next(ExitProc* next) { _next = next; } 430 }; 431 432 433 // Linked list of registered on_exit procedures 434 435 static ExitProc* exit_procs = NULL; 436 437 438 extern "C" { 439 void register_on_exit_function(void (*func)(void)) { 440 ExitProc *entry = new ExitProc(func); 441 // Classic vm does not throw an exception in case the allocation failed, 442 if (entry != NULL) { 443 entry->set_next(exit_procs); 444 exit_procs = entry; 445 } 446 } 447 } 448 449 // Note: before_exit() can be executed only once, if more than one threads 450 // are trying to shutdown the VM at the same time, only one thread 451 // can run before_exit() and all other threads must wait. 452 void before_exit(JavaThread * thread) { 453 #define BEFORE_EXIT_NOT_RUN 0 454 #define BEFORE_EXIT_RUNNING 1 455 #define BEFORE_EXIT_DONE 2 456 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; 457 458 // Note: don't use a Mutex to guard the entire before_exit(), as 459 // JVMTI post_thread_end_event and post_vm_death_event will run native code. 460 // A CAS or OSMutex would work just fine but then we need to manipulate 461 // thread state for Safepoint. Here we use Monitor wait() and notify_all() 462 // for synchronization. 463 { MutexLocker ml(BeforeExit_lock); 464 switch (_before_exit_status) { 465 case BEFORE_EXIT_NOT_RUN: 466 _before_exit_status = BEFORE_EXIT_RUNNING; 467 break; 468 case BEFORE_EXIT_RUNNING: 469 while (_before_exit_status == BEFORE_EXIT_RUNNING) { 470 BeforeExit_lock->wait(); 471 } 472 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); 473 return; 474 case BEFORE_EXIT_DONE: 475 return; 476 } 477 } 478 479 // The only difference between this and Win32's _onexit procs is that 480 // this version is invoked before any threads get killed. 481 ExitProc* current = exit_procs; 482 while (current != NULL) { 483 ExitProc* next = current->next(); 484 current->evaluate(); 485 delete current; 486 current = next; 487 } 488 489 // Hang forever on exit if we're reporting an error. 490 if (ShowMessageBoxOnError && is_error_reported()) { 491 os::infinite_sleep(); 492 } 493 494 // Terminate watcher thread - must before disenrolling any periodic task 495 if (PeriodicTask::num_tasks() > 0) 496 WatcherThread::stop(); 497 498 // Print statistics gathered (profiling ...) 499 if (Arguments::has_profile()) { 500 FlatProfiler::disengage(); 501 FlatProfiler::print(10); 502 } 503 504 // shut down the StatSampler task 505 StatSampler::disengage(); 506 StatSampler::destroy(); 507 508 // Stop concurrent GC threads 509 Universe::heap()->stop(); 510 511 // Print GC/heap related information. 512 if (PrintGCDetails) { 513 Universe::print(); 514 AdaptiveSizePolicyOutput(0); 515 if (Verbose) { 516 ClassLoaderDataGraph::dump_on(gclog_or_tty); 517 } 518 } 519 520 if (PrintBytecodeHistogram) { 521 BytecodeHistogram::print(); 522 } 523 524 if (JvmtiExport::should_post_thread_life()) { 525 JvmtiExport::post_thread_end(thread); 526 } 527 528 529 EventThreadEnd event; 530 if (event.should_commit()) { 531 event.set_thread(JFR_THREAD_ID(thread)); 532 event.commit(); 533 } 534 535 JFR_ONLY(Jfr::on_vm_shutdown();) 536 537 // Always call even when there are not JVMTI environments yet, since environments 538 // may be attached late and JVMTI must track phases of VM execution 539 JvmtiExport::post_vm_death(); 540 Threads::shutdown_vm_agents(); 541 542 // Terminate the signal thread 543 // Note: we don't wait until it actually dies. 544 os::terminate_signal_thread(); 545 546 print_statistics(); 547 Universe::heap()->print_tracing_info(); 548 549 { MutexLocker ml(BeforeExit_lock); 550 _before_exit_status = BEFORE_EXIT_DONE; 551 BeforeExit_lock->notify_all(); 552 } 553 554 if (VerifyStringTableAtExit) { 555 int fail_cnt = 0; 556 { 557 MutexLocker ml(StringTable_lock); 558 fail_cnt = StringTable::verify_and_compare_entries(); 559 } 560 561 if (fail_cnt != 0) { 562 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); 563 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); 564 } 565 } 566 567 #undef BEFORE_EXIT_NOT_RUN 568 #undef BEFORE_EXIT_RUNNING 569 #undef BEFORE_EXIT_DONE 570 } 571 572 void vm_exit(int code) { 573 Thread* thread = ThreadLocalStorage::is_initialized() ? 574 ThreadLocalStorage::get_thread_slow() : NULL; 575 if (thread == NULL) { 576 // we have serious problems -- just exit 577 vm_direct_exit(code); 578 } 579 580 if (VMThread::vm_thread() != NULL) { 581 // Fire off a VM_Exit operation to bring VM to a safepoint and exit 582 VM_Exit op(code); 583 if (thread->is_Java_thread()) 584 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); 585 VMThread::execute(&op); 586 // should never reach here; but in case something wrong with VM Thread. 587 vm_direct_exit(code); 588 } else { 589 // VM thread is gone, just exit 590 vm_direct_exit(code); 591 } 592 ShouldNotReachHere(); 593 } 594 595 void notify_vm_shutdown() { 596 // For now, just a dtrace probe. 597 #ifndef USDT2 598 HS_DTRACE_PROBE(hotspot, vm__shutdown); 599 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); 600 #else /* USDT2 */ 601 HOTSPOT_VM_SHUTDOWN(); 602 #endif /* USDT2 */ 603 } 604 605 void vm_direct_exit(int code) { 606 notify_vm_shutdown(); 607 os::wait_for_keypress_at_exit(); 608 ::exit(code); 609 } 610 611 void vm_perform_shutdown_actions() { 612 // Warning: do not call 'exit_globals()' here. All threads are still running. 613 // Calling 'exit_globals()' will disable thread-local-storage and cause all 614 // kinds of assertions to trigger in debug mode. 615 if (is_init_completed()) { 616 Thread* thread = ThreadLocalStorage::is_initialized() ? 617 ThreadLocalStorage::get_thread_slow() : NULL; 618 if (thread != NULL && thread->is_Java_thread()) { 619 // We are leaving the VM, set state to native (in case any OS exit 620 // handlers call back to the VM) 621 JavaThread* jt = (JavaThread*)thread; 622 // Must always be walkable or have no last_Java_frame when in 623 // thread_in_native 624 jt->frame_anchor()->make_walkable(jt); 625 jt->set_thread_state(_thread_in_native); 626 } 627 } 628 notify_vm_shutdown(); 629 } 630 631 void vm_shutdown() 632 { 633 vm_perform_shutdown_actions(); 634 os::wait_for_keypress_at_exit(); 635 os::shutdown(); 636 } 637 638 void vm_abort(bool dump_core) { 639 vm_perform_shutdown_actions(); 640 os::wait_for_keypress_at_exit(); 641 os::abort(dump_core); 642 ShouldNotReachHere(); 643 } 644 645 void vm_notify_during_shutdown(const char* error, const char* message) { 646 if (error != NULL) { 647 tty->print_cr("Error occurred during initialization of VM"); 648 tty->print("%s", error); 649 if (message != NULL) { 650 tty->print_cr(": %s", message); 651 } 652 else { 653 tty->cr(); 654 } 655 } 656 if (ShowMessageBoxOnError && WizardMode) { 657 fatal("Error occurred during initialization of VM"); 658 } 659 } 660 661 void vm_exit_during_initialization(Handle exception) { 662 tty->print_cr("Error occurred during initialization of VM"); 663 // If there are exceptions on this thread it must be cleared 664 // first and here. Any future calls to EXCEPTION_MARK requires 665 // that no pending exceptions exist. 666 Thread *THREAD = Thread::current(); 667 if (HAS_PENDING_EXCEPTION) { 668 CLEAR_PENDING_EXCEPTION; 669 } 670 java_lang_Throwable::print(exception, tty); 671 tty->cr(); 672 java_lang_Throwable::print_stack_trace(exception(), tty); 673 tty->cr(); 674 vm_notify_during_shutdown(NULL, NULL); 675 676 // Failure during initialization, we don't want to dump core 677 vm_abort(false); 678 } 679 680 void vm_exit_during_initialization(Symbol* ex, const char* message) { 681 ResourceMark rm; 682 vm_notify_during_shutdown(ex->as_C_string(), message); 683 684 // Failure during initialization, we don't want to dump core 685 vm_abort(false); 686 } 687 688 void vm_exit_during_initialization(const char* error, const char* message) { 689 vm_notify_during_shutdown(error, message); 690 691 // Failure during initialization, we don't want to dump core 692 vm_abort(false); 693 } 694 695 void vm_shutdown_during_initialization(const char* error, const char* message) { 696 vm_notify_during_shutdown(error, message); 697 vm_shutdown(); 698 } 699 700 JDK_Version JDK_Version::_current; 701 const char* JDK_Version::_runtime_name; 702 const char* JDK_Version::_runtime_version; 703 704 void JDK_Version::initialize() { 705 jdk_version_info info; 706 assert(!_current.is_valid(), "Don't initialize twice"); 707 708 void *lib_handle = os::native_java_library(); 709 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, 710 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); 711 712 if (func == NULL) { 713 // JDK older than 1.6 714 _current._partially_initialized = true; 715 } else { 716 (*func)(&info, sizeof(info)); 717 718 int major = JDK_VERSION_MAJOR(info.jdk_version); 719 int minor = JDK_VERSION_MINOR(info.jdk_version); 720 int micro = JDK_VERSION_MICRO(info.jdk_version); 721 int build = JDK_VERSION_BUILD(info.jdk_version); 722 if (major == 1 && minor > 4) { 723 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. 724 major = minor; 725 minor = micro; 726 micro = 0; 727 } 728 _current = JDK_Version(major, minor, micro, info.update_version, 729 info.special_update_version, build, 730 info.thread_park_blocker == 1, 731 info.post_vm_init_hook_enabled == 1, 732 info.pending_list_uses_discovered_field == 1); 733 } 734 } 735 736 void JDK_Version::fully_initialize( 737 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { 738 // This is only called when current is less than 1.6 and we've gotten 739 // far enough in the initialization to determine the exact version. 740 assert(major < 6, "not needed for JDK version >= 6"); 741 assert(is_partially_initialized(), "must not initialize"); 742 if (major < 5) { 743 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. 744 micro = minor; 745 minor = major; 746 major = 1; 747 } 748 _current = JDK_Version(major, minor, micro, update); 749 } 750 751 void JDK_Version_init() { 752 JDK_Version::initialize(); 753 } 754 755 static int64_t encode_jdk_version(const JDK_Version& v) { 756 return 757 ((int64_t)v.major_version() << (BitsPerByte * 5)) | 758 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | 759 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | 760 ((int64_t)v.update_version() << (BitsPerByte * 2)) | 761 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | 762 ((int64_t)v.build_number() << (BitsPerByte * 0)); 763 } 764 765 int JDK_Version::compare(const JDK_Version& other) const { 766 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); 767 if (!is_partially_initialized() && other.is_partially_initialized()) { 768 return -(other.compare(*this)); // flip the comparators 769 } 770 assert(!other.is_partially_initialized(), "Not initialized yet"); 771 if (is_partially_initialized()) { 772 assert(other.major_version() >= 6, 773 "Invalid JDK version comparison during initialization"); 774 return -1; 775 } else { 776 uint64_t e = encode_jdk_version(*this); 777 uint64_t o = encode_jdk_version(other); 778 return (e > o) ? 1 : ((e == o) ? 0 : -1); 779 } 780 } 781 782 void JDK_Version::to_string(char* buffer, size_t buflen) const { 783 assert(buffer && buflen > 0, "call with useful buffer"); 784 size_t index = 0; 785 if (!is_valid()) { 786 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); 787 } else if (is_partially_initialized()) { 788 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); 789 } else { 790 int rc = jio_snprintf( 791 &buffer[index], buflen - index, "%d.%d", _major, _minor); 792 if (rc == -1) return; 793 index += rc; 794 if (_micro > 0) { 795 rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); 796 if (rc == -1) return; 797 index += rc; 798 } 799 if (_update > 0) { 800 rc = jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); 801 if (rc == -1) return; 802 index += rc; 803 } 804 if (_special > 0) { 805 rc = jio_snprintf(&buffer[index], buflen - index, "%c", _special); 806 if (rc == -1) return; 807 index += rc; 808 } 809 if (_build > 0) { 810 rc = jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); 811 if (rc == -1) return; 812 index += rc; 813 } 814 } 815 }