jdk8-mips64-public/hotspot: src/share/vm/runtime/java.cpp@78bbf4d43a14

8037816: Fix for 8036122 breaks build with Xcode5/clang
8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti

     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  */

    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

   100 #ifndef USDT2

   101 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown);

   102 #endif /* !USDT2 */

   104 #ifndef PRODUCT

   106 // Statistics printing (method invocation histogram)

   108 GrowableArray<Method*>* collected_invoked_methods;

   110 void collect_invoked_methods(Method* m) {

   111   if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) {

   112     collected_invoked_methods->push(m);

   113   }

   114 }

   116 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC

   118 GrowableArray<Method*>* collected_profiled_methods;

   120 void collect_profiled_methods(Method* m) {

   121   Thread* thread = Thread::current();

   122   // This HandleMark prevents a huge amount of handles from being added

   123   // to the metadata_handles() array on the thread.

   124   HandleMark hm(thread);

   125   methodHandle mh(thread, m);

   126   if ((m->method_data() != NULL) &&

   127       (PrintMethodData || CompilerOracle::should_print(mh))) {

   128     collected_profiled_methods->push(m);

   129   }

   130 }

   133 int compare_methods(Method** a, Method** b) {

   134   // %%% there can be 32-bit overflow here

   135   return ((*b)->invocation_count() + (*b)->compiled_invocation_count())

   136        - ((*a)->invocation_count() + (*a)->compiled_invocation_count());

   137 }

   140 void print_method_invocation_histogram() {

   141   ResourceMark rm;

   142   HandleMark hm;

   143   collected_invoked_methods = new GrowableArray<Method*>(1024);

   144   SystemDictionary::methods_do(collect_invoked_methods);

   145   collected_invoked_methods->sort(&compare_methods);

   146   //

   147   tty->cr();

   148   tty->print_cr("Histogram Over MethodOop Invocation Counters (cutoff = %d):", MethodHistogramCutoff);

   149   tty->cr();

   150   tty->print_cr("____Count_(I+C)____Method________________________Module_________________");

   151   unsigned total = 0, int_total = 0, comp_total = 0, static_total = 0, final_total = 0,

   152       synch_total = 0, nativ_total = 0, acces_total = 0;

   153   for (int index = 0; index < collected_invoked_methods->length(); index++) {

   154     Method* m = collected_invoked_methods->at(index);

   155     int c = m->invocation_count() + m->compiled_invocation_count();

   156     if (c >= MethodHistogramCutoff) m->print_invocation_count();

   157     int_total  += m->invocation_count();

   158     comp_total += m->compiled_invocation_count();

   159     if (m->is_final())        final_total  += c;

   160     if (m->is_static())       static_total += c;

   161     if (m->is_synchronized()) synch_total  += c;

   162     if (m->is_native())       nativ_total  += c;

   163     if (m->is_accessor())     acces_total  += c;

   164   }

   165   tty->cr();

   166   total = int_total + comp_total;

   167   tty->print_cr("Invocations summary:");

   168   tty->print_cr("\t%9d (%4.1f%%) interpreted",  int_total,    100.0 * int_total    / total);

   169   tty->print_cr("\t%9d (%4.1f%%) compiled",     comp_total,   100.0 * comp_total   / total);

   170   tty->print_cr("\t%9d (100%%)  total",         total);

   171   tty->print_cr("\t%9d (%4.1f%%) synchronized", synch_total,  100.0 * synch_total  / total);

   172   tty->print_cr("\t%9d (%4.1f%%) final",        final_total,  100.0 * final_total  / total);

   173   tty->print_cr("\t%9d (%4.1f%%) static",       static_total, 100.0 * static_total / total);

   174   tty->print_cr("\t%9d (%4.1f%%) native",       nativ_total,  100.0 * nativ_total  / total);

   175   tty->print_cr("\t%9d (%4.1f%%) accessor",     acces_total,  100.0 * acces_total  / total);

   176   tty->cr();

   177   SharedRuntime::print_call_statistics(comp_total);

   178 }

   180 void print_method_profiling_data() {

   181   ResourceMark rm;

   182   HandleMark hm;

   183   collected_profiled_methods = new GrowableArray<Method*>(1024);

   184   SystemDictionary::methods_do(collect_profiled_methods);

   185   collected_profiled_methods->sort(&compare_methods);

   187   int count = collected_profiled_methods->length();

   188   int total_size = 0;

   189   if (count > 0) {

   190     for (int index = 0; index < count; index++) {

   191       Method* m = collected_profiled_methods->at(index);

   192       ttyLocker ttyl;

   193       tty->print_cr("------------------------------------------------------------------------");

   194       //m->print_name(tty);

   195       m->print_invocation_count();

   196       tty->print_cr("  mdo size: %d bytes", m->method_data()->size_in_bytes());

   197       tty->cr();

   198       // Dump data on parameters if any

   199       if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) {

   200         tty->fill_to(2);

   201         m->method_data()->parameters_type_data()->print_data_on(tty);

   202       }

   203       m->print_codes();

   204       total_size += m->method_data()->size_in_bytes();

   205     }

   206     tty->print_cr("------------------------------------------------------------------------");

   207     tty->print_cr("Total MDO size: %d bytes", total_size);

   208   }

   209 }

   211 void print_bytecode_count() {

   212   if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {

   213     tty->print_cr("[BytecodeCounter::counter_value = %d]", BytecodeCounter::counter_value());

   214   }

   215 }

   217 AllocStats alloc_stats;

   221 // General statistics printing (profiling ...)

   222 void print_statistics() {

   223 #ifdef ASSERT

   225   if (CountRuntimeCalls) {

   226     extern Histogram *RuntimeHistogram;

   227     RuntimeHistogram->print();

   228   }

   230   if (CountJNICalls) {

   231     extern Histogram *JNIHistogram;

   232     JNIHistogram->print();

   233   }

   235   if (CountJVMCalls) {

   236     extern Histogram *JVMHistogram;

   237     JVMHistogram->print();

   238   }

   240 #endif

   242   if (MemProfiling) {

   243     MemProfiler::disengage();

   244   }

   246   if (CITime) {

   247     CompileBroker::print_times();

   248   }

   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 */

   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   }

   272   if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {

   273     OptoRuntime::print_named_counters();

   274   }

   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   if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData)) {

   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   }

   313   if (PrintCodeCache) {

   314     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);

   315     CodeCache::print();

   316   }

   318   if (PrintMethodFlushingStatistics) {

   319     NMethodSweeper::print();

   320   }

   322   if (PrintCodeCache2) {

   323     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);

   324     CodeCache::print_internals();

   325   }

   327   if (PrintClassStatistics) {

   328     SystemDictionary::print_class_statistics();

   329   }

   330   if (PrintMethodStatistics) {

   331     SystemDictionary::print_method_statistics();

   332   }

   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   }

   342   print_bytecode_count();

   343   if (PrintMallocStatistics) {

   344     tty->print("allocation stats: ");

   345     alloc_stats.print();

   346     tty->cr();

   347   }

   349   if (PrintSystemDictionaryAtExit) {

   350     SystemDictionary::print();

   351   }

   353   if (PrintBiasedLockingStatistics) {

   354     BiasedLocking::print_counters();

   355   }

   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 }

   376 #else // PRODUCT MODE STATISTICS

   378 void print_statistics() {

   380   if (CITime) {

   381     CompileBroker::print_times();

   382   }

   384   if (PrintCodeCache) {

   385     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);

   386     CodeCache::print();

   387   }

   389   if (PrintMethodFlushingStatistics) {

   390     NMethodSweeper::print();

   391   }

   393 #ifdef COMPILER2

   394   if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) {

   395     OptoRuntime::print_named_counters();

   396   }

   397 #endif

   398   if (PrintBiasedLockingStatistics) {

   399     BiasedLocking::print_counters();

   400   }

   402   // Native memory tracking data

   403   if (PrintNMTStatistics) {

   404     if (MemTracker::is_on()) {

   405       BaselineTTYOutputer outputer(tty);

   406       MemTracker::print_memory_usage(outputer, K, false);

   407     } else {

   408       tty->print_cr("%s", MemTracker::reason());

   409     }

   410   }

   411 }

   413 #endif

   416 // Helper class for registering on_exit calls through JVM_OnExit

   418 extern "C" {

   419     typedef void (*__exit_proc)(void);

   420 }

   422 class ExitProc : public CHeapObj<mtInternal> {

   423  private:

   424   __exit_proc _proc;

   425   // void (*_proc)(void);

   426   ExitProc* _next;

   427  public:

   428   // ExitProc(void (*proc)(void)) {

   429   ExitProc(__exit_proc proc) {

   430     _proc = proc;

   431     _next = NULL;

   432   }

   433   void evaluate()               { _proc(); }

   434   ExitProc* next() const        { return _next; }

   435   void set_next(ExitProc* next) { _next = next; }

   436 };

   439 // Linked list of registered on_exit procedures

   441 static ExitProc* exit_procs = NULL;

   444 extern "C" {

   445   void register_on_exit_function(void (*func)(void)) {

   446     ExitProc *entry = new ExitProc(func);

   447     // Classic vm does not throw an exception in case the allocation failed,

   448     if (entry != NULL) {

   449       entry->set_next(exit_procs);

   450       exit_procs = entry;

   451     }

   452   }

   453 }

   455 // Note: before_exit() can be executed only once, if more than one threads

   456 //       are trying to shutdown the VM at the same time, only one thread

   457 //       can run before_exit() and all other threads must wait.

   458 void before_exit(JavaThread * thread) {

   459   #define BEFORE_EXIT_NOT_RUN 0

   460   #define BEFORE_EXIT_RUNNING 1

   461   #define BEFORE_EXIT_DONE    2

   462   static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;

   464   // Note: don't use a Mutex to guard the entire before_exit(), as

   465   // JVMTI post_thread_end_event and post_vm_death_event will run native code.

   466   // A CAS or OSMutex would work just fine but then we need to manipulate

   467   // thread state for Safepoint. Here we use Monitor wait() and notify_all()

   468   // for synchronization.

   469   { MutexLocker ml(BeforeExit_lock);

   470     switch (_before_exit_status) {

   471     case BEFORE_EXIT_NOT_RUN:

   472       _before_exit_status = BEFORE_EXIT_RUNNING;

   473       break;

   474     case BEFORE_EXIT_RUNNING:

   475       while (_before_exit_status == BEFORE_EXIT_RUNNING) {

   476         BeforeExit_lock->wait();

   477       }

   478       assert(_before_exit_status == BEFORE_EXIT_DONE, "invalid state");

   479       return;

   480     case BEFORE_EXIT_DONE:

   481       return;

   482     }

   483   }

   485   // The only difference between this and Win32's _onexit procs is that

   486   // this version is invoked before any threads get killed.

   487   ExitProc* current = exit_procs;

   488   while (current != NULL) {

   489     ExitProc* next = current->next();

   490     current->evaluate();

   491     delete current;

   492     current = next;

   493   }

   495   // Hang forever on exit if we're reporting an error.

   496   if (ShowMessageBoxOnError && is_error_reported()) {

   497     os::infinite_sleep();

   498   }

   500   // Terminate watcher thread - must before disenrolling any periodic task

   501   if (PeriodicTask::num_tasks() > 0)

   502     WatcherThread::stop();

   504   // Print statistics gathered (profiling ...)

   505   if (Arguments::has_profile()) {

   506     FlatProfiler::disengage();

   507     FlatProfiler::print(10);

   508   }

   510   // shut down the StatSampler task

   511   StatSampler::disengage();

   512   StatSampler::destroy();

   514   // We do not need to explicitly stop concurrent GC threads because the

   515   // JVM will be taken down at a safepoint when such threads are inactive --

   516   // except for some concurrent G1 threads, see (comment in)

   517   // Threads::destroy_vm().

   519   // Print GC/heap related information.

   520   if (PrintGCDetails) {

   521     Universe::print();

   522     AdaptiveSizePolicyOutput(0);

   523     if (Verbose) {

   524       ClassLoaderDataGraph::dump_on(gclog_or_tty);

   525     }

   526   }

   528   if (PrintBytecodeHistogram) {

   529     BytecodeHistogram::print();

   530   }

   532   if (JvmtiExport::should_post_thread_life()) {

   533     JvmtiExport::post_thread_end(thread);

   534   }

   537   EventThreadEnd event;

   538   if (event.should_commit()) {

   539       event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));

   540       event.commit();

   541   }

   543   // Always call even when there are not JVMTI environments yet, since environments

   544   // may be attached late and JVMTI must track phases of VM execution

   545   JvmtiExport::post_vm_death();

   546   Threads::shutdown_vm_agents();

   548   // Terminate the signal thread

   549   // Note: we don't wait until it actually dies.

   550   os::terminate_signal_thread();

   552   print_statistics();

   553   Universe::heap()->print_tracing_info();

   555   { MutexLocker ml(BeforeExit_lock);

   556     _before_exit_status = BEFORE_EXIT_DONE;

   557     BeforeExit_lock->notify_all();

   558   }

   560   // Shutdown NMT before exit. Otherwise,

   561   // it will run into trouble when system destroys static variables.

   562   MemTracker::shutdown(MemTracker::NMT_normal);

   564   if (VerifyStringTableAtExit) {

   565     int fail_cnt = 0;

   566     {

   567       MutexLocker ml(StringTable_lock);

   568       fail_cnt = StringTable::verify_and_compare_entries();

   569     }

   571     if (fail_cnt != 0) {

   572       tty->print_cr("ERROR: fail_cnt=%d", fail_cnt);

   573       guarantee(fail_cnt == 0, "unexpected StringTable verification failures");

   574     }

   575   }

   577   #undef BEFORE_EXIT_NOT_RUN

   578   #undef BEFORE_EXIT_RUNNING

   579   #undef BEFORE_EXIT_DONE

   580 }

   582 void vm_exit(int code) {

   583   Thread* thread = ThreadLocalStorage::is_initialized() ?

   584     ThreadLocalStorage::get_thread_slow() : NULL;

   585   if (thread == NULL) {

   586     // we have serious problems -- just exit

   587     vm_direct_exit(code);

   588   }

   590   if (VMThread::vm_thread() != NULL) {

   591     // Fire off a VM_Exit operation to bring VM to a safepoint and exit

   592     VM_Exit op(code);

   593     if (thread->is_Java_thread())

   594       ((JavaThread*)thread)->set_thread_state(_thread_in_vm);

   595     VMThread::execute(&op);

   596     // should never reach here; but in case something wrong with VM Thread.

   597     vm_direct_exit(code);

   598   } else {

   599     // VM thread is gone, just exit

   600     vm_direct_exit(code);

   601   }

   602   ShouldNotReachHere();

   603 }

   605 void notify_vm_shutdown() {

   606   // For now, just a dtrace probe.

   607 #ifndef USDT2

   608   HS_DTRACE_PROBE(hotspot, vm__shutdown);

   609   HS_DTRACE_WORKAROUND_TAIL_CALL_BUG();

   610 #else /* USDT2 */

   611   HOTSPOT_VM_SHUTDOWN();

   612 #endif /* USDT2 */

   613 }

   615 void vm_direct_exit(int code) {

   616   notify_vm_shutdown();

   617   os::wait_for_keypress_at_exit();

   618   ::exit(code);

   619 }

   621 void vm_perform_shutdown_actions() {

   622   // Warning: do not call 'exit_globals()' here. All threads are still running.

   623   // Calling 'exit_globals()' will disable thread-local-storage and cause all

   624   // kinds of assertions to trigger in debug mode.

   625   if (is_init_completed()) {

   626     Thread* thread = ThreadLocalStorage::is_initialized() ?

   627                      ThreadLocalStorage::get_thread_slow() : NULL;

   628     if (thread != NULL && thread->is_Java_thread()) {

   629       // We are leaving the VM, set state to native (in case any OS exit

   630       // handlers call back to the VM)

   631       JavaThread* jt = (JavaThread*)thread;

   632       // Must always be walkable or have no last_Java_frame when in

   633       // thread_in_native

   634       jt->frame_anchor()->make_walkable(jt);

   635       jt->set_thread_state(_thread_in_native);

   636     }

   637   }

   638   notify_vm_shutdown();

   639 }

   641 void vm_shutdown()

   642 {

   643   vm_perform_shutdown_actions();

   644   os::wait_for_keypress_at_exit();

   645   os::shutdown();

   646 }

   648 void vm_abort(bool dump_core) {

   649   vm_perform_shutdown_actions();

   650   os::wait_for_keypress_at_exit();

   651   os::abort(dump_core);

   652   ShouldNotReachHere();

   653 }

   655 void vm_notify_during_shutdown(const char* error, const char* message) {

   656   if (error != NULL) {

   657     tty->print_cr("Error occurred during initialization of VM");

   658     tty->print("%s", error);

   659     if (message != NULL) {

   660       tty->print_cr(": %s", message);

   661     }

   662     else {

   663       tty->cr();

   664     }

   665   }

   666   if (ShowMessageBoxOnError && WizardMode) {

   667     fatal("Error occurred during initialization of VM");

   668   }

   669 }

   671 void vm_exit_during_initialization(Handle exception) {

   672   tty->print_cr("Error occurred during initialization of VM");

   673   // If there are exceptions on this thread it must be cleared

   674   // first and here. Any future calls to EXCEPTION_MARK requires

   675   // that no pending exceptions exist.

   676   Thread *THREAD = Thread::current();

   677   if (HAS_PENDING_EXCEPTION) {

   678     CLEAR_PENDING_EXCEPTION;

   679   }

   680   java_lang_Throwable::print(exception, tty);

   681   tty->cr();

   682   java_lang_Throwable::print_stack_trace(exception(), tty);

   683   tty->cr();

   684   vm_notify_during_shutdown(NULL, NULL);

   686   // Failure during initialization, we don't want to dump core

   687   vm_abort(false);

   688 }

   690 void vm_exit_during_initialization(Symbol* ex, const char* message) {

   691   ResourceMark rm;

   692   vm_notify_during_shutdown(ex->as_C_string(), message);

   694   // Failure during initialization, we don't want to dump core

   695   vm_abort(false);

   696 }

   698 void vm_exit_during_initialization(const char* error, const char* message) {

   699   vm_notify_during_shutdown(error, message);

   701   // Failure during initialization, we don't want to dump core

   702   vm_abort(false);

   703 }

   705 void vm_shutdown_during_initialization(const char* error, const char* message) {

   706   vm_notify_during_shutdown(error, message);

   707   vm_shutdown();

   708 }

   710 JDK_Version JDK_Version::_current;

   711 const char* JDK_Version::_runtime_name;

   712 const char* JDK_Version::_runtime_version;

   714 void JDK_Version::initialize() {

   715   jdk_version_info info;

   716   assert(!_current.is_valid(), "Don't initialize twice");

   718   void *lib_handle = os::native_java_library();

   719   jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t,

   720      os::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));

   722   if (func == NULL) {

   723     // JDK older than 1.6

   724     _current._partially_initialized = true;

   725   } else {

   726     (*func)(&info, sizeof(info));

   728     int major = JDK_VERSION_MAJOR(info.jdk_version);

   729     int minor = JDK_VERSION_MINOR(info.jdk_version);

   730     int micro = JDK_VERSION_MICRO(info.jdk_version);

   731     int build = JDK_VERSION_BUILD(info.jdk_version);

   732     if (major == 1 && minor > 4) {

   733       // We represent "1.5.0" as "5.0", but 1.4.2 as itself.

   734       major = minor;

   735       minor = micro;

   736       micro = 0;

   737     }

   738     _current = JDK_Version(major, minor, micro, info.update_version,

   739                            info.special_update_version, build,

   740                            info.thread_park_blocker == 1,

   741                            info.post_vm_init_hook_enabled == 1,

   742                            info.pending_list_uses_discovered_field == 1);

   743   }

   744 }

   746 void JDK_Version::fully_initialize(

   747     uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) {

   748   // This is only called when current is less than 1.6 and we've gotten

   749   // far enough in the initialization to determine the exact version.

   750   assert(major < 6, "not needed for JDK version >= 6");

   751   assert(is_partially_initialized(), "must not initialize");

   752   if (major < 5) {

   753     // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc.

   754     micro = minor;

   755     minor = major;

   756     major = 1;

   757   }

   758   _current = JDK_Version(major, minor, micro, update);

   759 }

   761 void JDK_Version_init() {

   762   JDK_Version::initialize();

   763 }

   765 static int64_t encode_jdk_version(const JDK_Version& v) {

   766   return

   767     ((int64_t)v.major_version()          << (BitsPerByte * 5)) |

   768     ((int64_t)v.minor_version()          << (BitsPerByte * 4)) |

   769     ((int64_t)v.micro_version()          << (BitsPerByte * 3)) |

   770     ((int64_t)v.update_version()         << (BitsPerByte * 2)) |

   771     ((int64_t)v.special_update_version() << (BitsPerByte * 1)) |

   772     ((int64_t)v.build_number()           << (BitsPerByte * 0));

   773 }

   775 int JDK_Version::compare(const JDK_Version& other) const {

   776   assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)");

   777   if (!is_partially_initialized() && other.is_partially_initialized()) {

   778     return -(other.compare(*this)); // flip the comparators

   779   }

   780   assert(!other.is_partially_initialized(), "Not initialized yet");

   781   if (is_partially_initialized()) {

   782     assert(other.major_version() >= 6,

   783            "Invalid JDK version comparison during initialization");

   784     return -1;

   785   } else {

   786     uint64_t e = encode_jdk_version(*this);

   787     uint64_t o = encode_jdk_version(other);

   788     return (e > o) ? 1 : ((e == o) ? 0 : -1);

   789   }

   790 }

   792 void JDK_Version::to_string(char* buffer, size_t buflen) const {

   793   size_t index = 0;

   794   if (!is_valid()) {

   795     jio_snprintf(buffer, buflen, "%s", "(uninitialized)");

   796   } else if (is_partially_initialized()) {

   797     jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0");

   798   } else {

   799     index += jio_snprintf(

   800         &buffer[index], buflen - index, "%d.%d", _major, _minor);

   801     if (_micro > 0) {

   802       index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro);

   803     }

   804     if (_update > 0) {

   805       index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update);

   806     }

   807     if (_special > 0) {

   808       index += jio_snprintf(&buffer[index], buflen - index, "%c", _special);

   809     }

   810     if (_build > 0) {

   811       index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build);

   812     }

   813   }

   814 }

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/runtime/java.cpp@78bbf4d43a14

src/share/vm/runtime/java.cpp