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/task.hpp" 56 #include "runtime/thread.inline.hpp" 57 #include "runtime/timer.hpp" 58 #include "runtime/vm_operations.hpp" 59 #include "services/memReporter.hpp" 60 #include "services/memTracker.hpp" 61 #include "trace/tracing.hpp" 62 #include "utilities/dtrace.hpp" 63 #include "utilities/globalDefinitions.hpp" 64 #include "utilities/histogram.hpp" 65 #include "utilities/macros.hpp" 66 #include "utilities/vmError.hpp" 67 #ifdef TARGET_ARCH_x86 68 # include "vm_version_x86.hpp" 69 #endif 70 #ifdef TARGET_ARCH_sparc 71 # include "vm_version_sparc.hpp" 72 #endif 73 #ifdef TARGET_ARCH_zero 74 # include "vm_version_zero.hpp" 75 #endif 76 #ifdef TARGET_ARCH_arm 77 # include "vm_version_arm.hpp" 78 #endif 79 #ifdef TARGET_ARCH_ppc 80 # include "vm_version_ppc.hpp" 81 #endif 82 #if INCLUDE_ALL_GCS 83 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp" 84 #include "gc_implementation/parallelScavenge/psScavenge.hpp" 85 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" 86 #endif // INCLUDE_ALL_GCS 87 #ifdef COMPILER1 88 #include "c1/c1_Compiler.hpp" 89 #include "c1/c1_Runtime1.hpp" 90 #endif 91 #ifdef COMPILER2 92 #include "code/compiledIC.hpp" 93 #include "compiler/methodLiveness.hpp" 94 #include "opto/compile.hpp" 95 #include "opto/indexSet.hpp" 96 #include "opto/runtime.hpp" 97 #endif 98 99 #ifndef USDT2 100 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown); 101 #endif /* !USDT2 */ 102 103 #ifndef PRODUCT 104 105 // Statistics printing (method invocation histogram) 106 107 GrowableArray<Method*>* collected_invoked_methods; 108 109 void collect_invoked_methods(Method* m) { 110 if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { 111 collected_invoked_methods->push(m); 112 } 113 } 114 115 116 GrowableArray<Method*>* collected_profiled_methods; 117 118 void collect_profiled_methods(Method* m) { 119 Thread* thread = Thread::current(); 120 // This HandleMark prevents a huge amount of handles from being added 121 // to the metadata_handles() array on the thread. 122 HandleMark hm(thread); 123 methodHandle mh(thread, m); 124 if ((m->method_data() != NULL) && 125 (PrintMethodData || CompilerOracle::should_print(mh))) { 126 collected_profiled_methods->push(m); 127 } 128 } 129 130 131 int compare_methods(Method** a, Method** b) { 132 // %%% there can be 32-bit overflow here 133 return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) 134 - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); 135 } 136 137 138 void print_method_invocation_histogram() { 139 ResourceMark rm; 140 HandleMark hm; 141 collected_invoked_methods = new GrowableArray<Method*>(1024); 142 SystemDictionary::methods_do(collect_invoked_methods); 143 collected_invoked_methods->sort(&compare_methods); 144 // 145 tty->cr(); 146 tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff); 147 tty->cr(); 148 tty->print_cr("____Count_(I+C)____Method________________________Module_________________"); 149 unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0, 150 synch_total = 0, nativ_total = 0, acces_total = 0; 151 for (int index = 0; index < collected_invoked_methods->length(); index++) { 152 Method* m = collected_invoked_methods->at(index); 153 int c = m->invocation_count() + m->compiled_invocation_count(); 154 if (c >= MethodHistogramCutoff) m->print_invocation_count(); 155 int_total += m->invocation_count(); 156 comp_total += m->compiled_invocation_count(); 157 if (m->is_final()) final_total += c; 158 if (m->is_static()) static_total += c; 159 if (m->is_synchronized()) synch_total += c; 160 if (m->is_native()) nativ_total += c; 161 if (m->is_accessor()) acces_total += c; 162 } 163 tty->cr(); 164 total = int_total + comp_total; 165 tty->print_cr("Invocations summary:"); 166 tty->print_cr("\t%9d (%4.1f%%) interpreted", int_total, 100.0 * int_total / total); 167 tty->print_cr("\t%9d (%4.1f%%) compiled", comp_total, 100.0 * comp_total / total); 168 tty->print_cr("\t%9d (100%%) total", total); 169 tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total, 100.0 * synch_total / total); 170 tty->print_cr("\t%9d (%4.1f%%) final", final_total, 100.0 * final_total / total); 171 tty->print_cr("\t%9d (%4.1f%%) static", static_total, 100.0 * static_total / total); 172 tty->print_cr("\t%9d (%4.1f%%) native", nativ_total, 100.0 * nativ_total / total); 173 tty->print_cr("\t%9d (%4.1f%%) accessor", acces_total, 100.0 * acces_total / total); 174 tty->cr(); 175 SharedRuntime::print_call_statistics(comp_total); 176 } 177 178 void print_method_profiling_data() { 179 ResourceMark rm; 180 HandleMark hm; 181 collected_profiled_methods = new GrowableArray<Method*>(1024); 182 SystemDictionary::methods_do(collect_profiled_methods); 183 collected_profiled_methods->sort(&compare_methods); 184 185 int count = collected_profiled_methods->length(); 186 int total_size = 0; 187 if (count > 0) { 188 for (int index = 0; index < count; index++) { 189 Method* m = collected_profiled_methods->at(index); 190 ttyLocker ttyl; 191 tty->print_cr("------------------------------------------------------------------------"); 192 //m->print_name(tty); 193 m->print_invocation_count(); 194 tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); 195 tty->cr(); 196 m->print_codes(); 197 total_size += m->method_data()->size_in_bytes(); 198 } 199 tty->print_cr("------------------------------------------------------------------------"); 200 tty->print_cr("Total MDO size: %d bytes", total_size); 201 } 202 } 203 204 void print_bytecode_count() { 205 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 206 tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value()); 207 } 208 } 209 210 AllocStats alloc_stats; 211 212 213 214 // General statistics printing (profiling ...) 215 216 void print_statistics() { 217 218 #ifdef ASSERT 219 220 if (CountRuntimeCalls) { 221 extern Histogram *RuntimeHistogram; 222 RuntimeHistogram->print(); 223 } 224 225 if (CountJNICalls) { 226 extern Histogram *JNIHistogram; 227 JNIHistogram->print(); 228 } 229 230 if (CountJVMCalls) { 231 extern Histogram *JVMHistogram; 232 JVMHistogram->print(); 233 } 234 235 #endif 236 237 if (MemProfiling) { 238 MemProfiler::disengage(); 239 } 240 241 if (CITime) { 242 CompileBroker::print_times(); 243 } 244 245 #ifdef COMPILER1 246 if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) { 247 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics); 248 Runtime1::print_statistics(); 249 Deoptimization::print_statistics(); 250 SharedRuntime::print_statistics(); 251 nmethod::print_statistics(); 252 } 253 #endif /* COMPILER1 */ 254 255 #ifdef COMPILER2 256 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { 257 FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); 258 Compile::print_statistics(); 259 #ifndef COMPILER1 260 Deoptimization::print_statistics(); 261 nmethod::print_statistics(); 262 SharedRuntime::print_statistics(); 263 #endif //COMPILER1 264 os::print_statistics(); 265 } 266 267 if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics) { 268 OptoRuntime::print_named_counters(); 269 } 270 271 if (TimeLivenessAnalysis) { 272 MethodLiveness::print_times(); 273 } 274 #ifdef ASSERT 275 if (CollectIndexSetStatistics) { 276 IndexSet::print_statistics(); 277 } 278 #endif // ASSERT 279 #endif // COMPILER2 280 if (CountCompiledCalls) { 281 print_method_invocation_histogram(); 282 } 283 if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) { 284 print_method_profiling_data(); 285 } 286 if (TimeCompiler) { 287 COMPILER2_PRESENT(Compile::print_timers();) 288 } 289 if (TimeCompilationPolicy) { 290 CompilationPolicy::policy()->print_time(); 291 } 292 if (TimeOopMap) { 293 GenerateOopMap::print_time(); 294 } 295 if (ProfilerCheckIntervals) { 296 PeriodicTask::print_intervals(); 297 } 298 if (PrintSymbolTableSizeHistogram) { 299 SymbolTable::print_histogram(); 300 } 301 if (CountBytecodes || TraceBytecodes || StopInterpreterAt) { 302 BytecodeCounter::print(); 303 } 304 if (PrintBytecodePairHistogram) { 305 BytecodePairHistogram::print(); 306 } 307 308 if (PrintCodeCache) { 309 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 310 CodeCache::print(); 311 } 312 313 if (PrintCodeCache2) { 314 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 315 CodeCache::print_internals(); 316 } 317 318 if (PrintClassStatistics) { 319 SystemDictionary::print_class_statistics(); 320 } 321 if (PrintMethodStatistics) { 322 SystemDictionary::print_method_statistics(); 323 } 324 325 if (PrintVtableStats) { 326 klassVtable::print_statistics(); 327 klassItable::print_statistics(); 328 } 329 if (VerifyOops) { 330 tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); 331 } 332 333 print_bytecode_count(); 334 if (PrintMallocStatistics) { 335 tty->print("allocation stats: "); 336 alloc_stats.print(); 337 tty->cr(); 338 } 339 340 if (PrintSystemDictionaryAtExit) { 341 SystemDictionary::print(); 342 } 343 344 if (PrintBiasedLockingStatistics) { 345 BiasedLocking::print_counters(); 346 } 347 348 #ifdef ENABLE_ZAP_DEAD_LOCALS 349 #ifdef COMPILER2 350 if (ZapDeadCompiledLocals) { 351 tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count); 352 tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count); 353 } 354 #endif // COMPILER2 355 #endif // ENABLE_ZAP_DEAD_LOCALS 356 // Native memory tracking data 357 if (PrintNMTStatistics) { 358 if (MemTracker::is_on()) { 359 BaselineTTYOutputer outputer(tty); 360 MemTracker::print_memory_usage(outputer, K, false); 361 } else { 362 tty->print_cr(MemTracker::reason()); 363 } 364 } 365 } 366 367 #else // PRODUCT MODE STATISTICS 368 369 void print_statistics() { 370 371 if (CITime) { 372 CompileBroker::print_times(); 373 } 374 375 if (PrintCodeCache) { 376 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 377 CodeCache::print(); 378 } 379 380 #ifdef COMPILER2 381 if (PrintPreciseBiasedLockingStatistics) { 382 OptoRuntime::print_named_counters(); 383 } 384 #endif 385 if (PrintBiasedLockingStatistics) { 386 BiasedLocking::print_counters(); 387 } 388 389 // Native memory tracking data 390 if (PrintNMTStatistics) { 391 if (MemTracker::is_on()) { 392 BaselineTTYOutputer outputer(tty); 393 MemTracker::print_memory_usage(outputer, K, false); 394 } else { 395 tty->print_cr(MemTracker::reason()); 396 } 397 } 398 } 399 400 #endif 401 402 403 // Helper class for registering on_exit calls through JVM_OnExit 404 405 extern "C" { 406 typedef void (*__exit_proc)(void); 407 } 408 409 class ExitProc : public CHeapObj<mtInternal> { 410 private: 411 __exit_proc _proc; 412 // void (*_proc)(void); 413 ExitProc* _next; 414 public: 415 // ExitProc(void (*proc)(void)) { 416 ExitProc(__exit_proc proc) { 417 _proc = proc; 418 _next = NULL; 419 } 420 void evaluate() { _proc(); } 421 ExitProc* next() const { return _next; } 422 void set_next(ExitProc* next) { _next = next; } 423 }; 424 425 426 // Linked list of registered on_exit procedures 427 428 static ExitProc* exit_procs = NULL; 429 430 431 extern "C" { 432 void register_on_exit_function(void (*func)(void)) { 433 ExitProc *entry = new ExitProc(func); 434 // Classic vm does not throw an exception in case the allocation failed, 435 if (entry != NULL) { 436 entry->set_next(exit_procs); 437 exit_procs = entry; 438 } 439 } 440 } 441 442 // Note: before_exit() can be executed only once, if more than one threads 443 // are trying to shutdown the VM at the same time, only one thread 444 // can run before_exit() and all other threads must wait. 445 void before_exit(JavaThread * thread) { 446 #define BEFORE_EXIT_NOT_RUN 0 447 #define BEFORE_EXIT_RUNNING 1 448 #define BEFORE_EXIT_DONE 2 449 static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN; 450 451 // Note: don't use a Mutex to guard the entire before_exit(), as 452 // JVMTI post_thread_end_event and post_vm_death_event will run native code. 453 // A CAS or OSMutex would work just fine but then we need to manipulate 454 // thread state for Safepoint. Here we use Monitor wait() and notify_all() 455 // for synchronization. 456 { MutexLocker ml(BeforeExit_lock); 457 switch (_before_exit_status) { 458 case BEFORE_EXIT_NOT_RUN: 459 _before_exit_status = BEFORE_EXIT_RUNNING; 460 break; 461 case BEFORE_EXIT_RUNNING: 462 while (_before_exit_status == BEFORE_EXIT_RUNNING) { 463 BeforeExit_lock->wait(); 464 } 465 assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state"); 466 return; 467 case BEFORE_EXIT_DONE: 468 return; 469 } 470 } 471 472 // The only difference between this and Win32's _onexit procs is that 473 // this version is invoked before any threads get killed. 474 ExitProc* current = exit_procs; 475 while (current != NULL) { 476 ExitProc* next = current->next(); 477 current->evaluate(); 478 delete current; 479 current = next; 480 } 481 482 // Hang forever on exit if we're reporting an error. 483 if (ShowMessageBoxOnError && is_error_reported()) { 484 os::infinite_sleep(); 485 } 486 487 // Terminate watcher thread - must before disenrolling any periodic task 488 if (PeriodicTask::num_tasks() > 0) 489 WatcherThread::stop(); 490 491 // Print statistics gathered (profiling ...) 492 if (Arguments::has_profile()) { 493 FlatProfiler::disengage(); 494 FlatProfiler::print(10); 495 } 496 497 // shut down the StatSampler task 498 StatSampler::disengage(); 499 StatSampler::destroy(); 500 501 // We do not need to explicitly stop concurrent GC threads because the 502 // JVM will be taken down at a safepoint when such threads are inactive -- 503 // except for some concurrent G1 threads, see (comment in) 504 // Threads::destroy_vm(). 505 506 // Print GC/heap related information. 507 if (PrintGCDetails) { 508 Universe::print(); 509 AdaptiveSizePolicyOutput(0); 510 if (Verbose) { 511 ClassLoaderDataGraph::dump_on(gclog_or_tty); 512 } 513 } 514 515 if (PrintBytecodeHistogram) { 516 BytecodeHistogram::print(); 517 } 518 519 if (JvmtiExport::should_post_thread_life()) { 520 JvmtiExport::post_thread_end(thread); 521 } 522 523 524 EventThreadEnd event; 525 if (event.should_commit()) { 526 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj())); 527 event.commit(); 528 } 529 530 // Always call even when there are not JVMTI environments yet, since environments 531 // may be attached late and JVMTI must track phases of VM execution 532 JvmtiExport::post_vm_death(); 533 Threads::shutdown_vm_agents(); 534 535 // Terminate the signal thread 536 // Note: we don't wait until it actually dies. 537 os::terminate_signal_thread(); 538 539 print_statistics(); 540 Universe::heap()->print_tracing_info(); 541 542 { MutexLocker ml(BeforeExit_lock); 543 _before_exit_status = BEFORE_EXIT_DONE; 544 BeforeExit_lock->notify_all(); 545 } 546 547 // Shutdown NMT before exit. Otherwise, 548 // it will run into trouble when system destroys static variables. 549 MemTracker::shutdown(MemTracker::NMT_normal); 550 551 if (VerifyStringTableAtExit) { 552 int fail_cnt = 0; 553 { 554 MutexLocker ml(StringTable_lock); 555 fail_cnt = StringTable::verify_and_compare_entries(); 556 } 557 558 if (fail_cnt != 0) { 559 tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); 560 guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); 561 } 562 } 563 564 #undef BEFORE_EXIT_NOT_RUN 565 #undef BEFORE_EXIT_RUNNING 566 #undef BEFORE_EXIT_DONE 567 } 568 569 void vm_exit(int code) { 570 Thread* thread = ThreadLocalStorage::is_initialized() ? 571 ThreadLocalStorage::get_thread_slow() : NULL; 572 if (thread == NULL) { 573 // we have serious problems -- just exit 574 vm_direct_exit(code); 575 } 576 577 if (VMThread::vm_thread() != NULL) { 578 // Fire off a VM_Exit operation to bring VM to a safepoint and exit 579 VM_Exit op(code); 580 if (thread->is_Java_thread()) 581 ((JavaThread*)thread)->set_thread_state(_thread_in_vm); 582 VMThread::execute(&op); 583 // should never reach here; but in case something wrong with VM Thread. 584 vm_direct_exit(code); 585 } else { 586 // VM thread is gone, just exit 587 vm_direct_exit(code); 588 } 589 ShouldNotReachHere(); 590 } 591 592 void notify_vm_shutdown() { 593 // For now, just a dtrace probe. 594 #ifndef USDT2 595 HS_DTRACE_PROBE(hotspot, vm__shutdown); 596 HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); 597 #else /* USDT2 */ 598 HOTSPOT_VM_SHUTDOWN(); 599 #endif /* USDT2 */ 600 } 601 602 void vm_direct_exit(int code) { 603 notify_vm_shutdown(); 604 os::wait_for_keypress_at_exit(); 605 ::exit(code); 606 } 607 608 void vm_perform_shutdown_actions() { 609 // Warning: do not call 'exit_globals()' here. All threads are still running. 610 // Calling 'exit_globals()' will disable thread-local-storage and cause all 611 // kinds of assertions to trigger in debug mode. 612 if (is_init_completed()) { 613 Thread* thread = ThreadLocalStorage::is_initialized() ? 614 ThreadLocalStorage::get_thread_slow() : NULL; 615 if (thread != NULL && thread->is_Java_thread()) { 616 // We are leaving the VM, set state to native (in case any OS exit 617 // handlers call back to the VM) 618 JavaThread* jt = (JavaThread*)thread; 619 // Must always be walkable or have no last_Java_frame when in 620 // thread_in_native 621 jt->frame_anchor()->make_walkable(jt); 622 jt->set_thread_state(_thread_in_native); 623 } 624 } 625 notify_vm_shutdown(); 626 } 627 628 void vm_shutdown() 629 { 630 vm_perform_shutdown_actions(); 631 os::wait_for_keypress_at_exit(); 632 os::shutdown(); 633 } 634 635 void vm_abort(bool dump_core) { 636 vm_perform_shutdown_actions(); 637 os::wait_for_keypress_at_exit(); 638 os::abort(dump_core); 639 ShouldNotReachHere(); 640 } 641 642 void vm_notify_during_shutdown(const char* error, const char* message) { 643 if (error != NULL) { 644 tty->print_cr("Error occurred during initialization of VM"); 645 tty->print("%s", error); 646 if (message != NULL) { 647 tty->print_cr(": %s", message); 648 } 649 else { 650 tty->cr(); 651 } 652 } 653 if (ShowMessageBoxOnError && WizardMode) { 654 fatal("Error occurred during initialization of VM"); 655 } 656 } 657 658 void vm_exit_during_initialization(Handle exception) { 659 tty->print_cr("Error occurred during initialization of VM"); 660 // If there are exceptions on this thread it must be cleared 661 // first and here. Any future calls to EXCEPTION_MARK requires 662 // that no pending exceptions exist. 663 Thread *THREAD = Thread::current(); 664 if (HAS_PENDING_EXCEPTION) { 665 CLEAR_PENDING_EXCEPTION; 666 } 667 java_lang_Throwable::print(exception, tty); 668 tty->cr(); 669 java_lang_Throwable::print_stack_trace(exception(), tty); 670 tty->cr(); 671 vm_notify_during_shutdown(NULL, NULL); 672 673 // Failure during initialization, we don't want to dump core 674 vm_abort(false); 675 } 676 677 void vm_exit_during_initialization(Symbol* ex, const char* message) { 678 ResourceMark rm; 679 vm_notify_during_shutdown(ex->as_C_string(), message); 680 681 // Failure during initialization, we don't want to dump core 682 vm_abort(false); 683 } 684 685 void vm_exit_during_initialization(const char* error, const char* message) { 686 vm_notify_during_shutdown(error, message); 687 688 // Failure during initialization, we don't want to dump core 689 vm_abort(false); 690 } 691 692 void vm_shutdown_during_initialization(const char* error, const char* message) { 693 vm_notify_during_shutdown(error, message); 694 vm_shutdown(); 695 } 696 697 JDK_Version JDK_Version::_current; 698 const char* JDK_Version::_runtime_name; 699 const char* JDK_Version::_runtime_version; 700 701 void JDK_Version::initialize() { 702 jdk_version_info info; 703 assert(!_current.is_valid(), "Don't initialize twice"); 704 705 void *lib_handle = os::native_java_library(); 706 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t, 707 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); 708 709 if (func == NULL) { 710 // JDK older than 1.6 711 _current._partially_initialized = true; 712 } else { 713 (*func)(&info, sizeof(info)); 714 715 int major = JDK_VERSION_MAJOR(info.jdk_version); 716 int minor = JDK_VERSION_MINOR(info.jdk_version); 717 int micro = JDK_VERSION_MICRO(info.jdk_version); 718 int build = JDK_VERSION_BUILD(info.jdk_version); 719 if (major == 1 && minor > 4) { 720 // We represent "1.5.0" as "5.0", but 1.4.2 as itself. 721 major = minor; 722 minor = micro; 723 micro = 0; 724 } 725 _current = JDK_Version(major, minor, micro, info.update_version, 726 info.special_update_version, build, 727 info.thread_park_blocker == 1, 728 info.post_vm_init_hook_enabled == 1, 729 info.pending_list_uses_discovered_field == 1); 730 } 731 } 732 733 void JDK_Version::fully_initialize( 734 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) { 735 // This is only called when current is less than 1.6 and we've gotten 736 // far enough in the initialization to determine the exact version. 737 assert(major < 6, "not needed for JDK version >= 6"); 738 assert(is_partially_initialized(), "must not initialize"); 739 if (major < 5) { 740 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc. 741 micro = minor; 742 minor = major; 743 major = 1; 744 } 745 _current = JDK_Version(major, minor, micro, update); 746 } 747 748 void JDK_Version_init() { 749 JDK_Version::initialize(); 750 } 751 752 static int64_t encode_jdk_version(const JDK_Version& v) { 753 return 754 ((int64_t)v.major_version() << (BitsPerByte * 5)) | 755 ((int64_t)v.minor_version() << (BitsPerByte * 4)) | 756 ((int64_t)v.micro_version() << (BitsPerByte * 3)) | 757 ((int64_t)v.update_version() << (BitsPerByte * 2)) | 758 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) | 759 ((int64_t)v.build_number() << (BitsPerByte * 0)); 760 } 761 762 int JDK_Version::compare(const JDK_Version& other) const { 763 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)"); 764 if (!is_partially_initialized() && other.is_partially_initialized()) { 765 return -(other.compare(*this)); // flip the comparators 766 } 767 assert(!other.is_partially_initialized(), "Not initialized yet"); 768 if (is_partially_initialized()) { 769 assert(other.major_version() >= 6, 770 "Invalid JDK version comparison during initialization"); 771 return -1; 772 } else { 773 uint64_t e = encode_jdk_version(*this); 774 uint64_t o = encode_jdk_version(other); 775 return (e > o) ? 1 : ((e == o) ? 0 : -1); 776 } 777 } 778 779 void JDK_Version::to_string(char* buffer, size_t buflen) const { 780 size_t index = 0; 781 if (!is_valid()) { 782 jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); 783 } else if (is_partially_initialized()) { 784 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0"); 785 } else { 786 index += jio_snprintf( 787 &buffer[index], buflen - index, "%d.%d", _major, _minor); 788 if (_micro > 0) { 789 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro); 790 } 791 if (_update > 0) { 792 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update); 793 } 794 if (_special > 0) { 795 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special); 796 } 797 if (_build > 0) { 798 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build); 799 } 800 } 801 }