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

 /*

  * Copyright 1997-2008 Sun Microsystems, Inc.  All Rights Reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

  * CA 95054 USA or visit www.sun.com if you need additional information or

  * have any questions.

  *

  */

 #include "incls/_precompiled.incl"

 #include "incls/_java.cpp.incl"

 HS_DTRACE_PROBE_DECL(hotspot, vm__shutdown);

 #ifndef PRODUCT

 // Statistics printing (method invocation histogram)

 GrowableArray<methodOop>* collected_invoked_methods;

 void collect_invoked_methods(methodOop m) {

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

     collected_invoked_methods->push(m);

   }

 }

 GrowableArray<methodOop>* collected_profiled_methods;

 void collect_profiled_methods(methodOop m) {

   methodHandle mh(Thread::current(), m);

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

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

     collected_profiled_methods->push(m);

   }

 }

 int compare_methods(methodOop* a, methodOop* b) {

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

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

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

 }

 void print_method_invocation_histogram() {

   ResourceMark rm;

   HandleMark hm;

   collected_invoked_methods = new GrowableArray<methodOop>(1024);

   SystemDictionary::methods_do(collect_invoked_methods);

   collected_invoked_methods->sort(&compare_methods);

   //

   tty->cr();

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

   tty->cr();

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

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

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

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

     methodOop m = collected_invoked_methods->at(index);

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

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

     int_total  += m->invocation_count();

     comp_total += m->compiled_invocation_count();

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

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

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

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

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

   }

   tty->cr();

   total = int_total + comp_total;

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

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

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

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

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

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

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

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

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

   tty->cr();

   SharedRuntime::print_call_statistics(comp_total);

 }

 void print_method_profiling_data() {

   ResourceMark rm;

   HandleMark hm;

   collected_profiled_methods = new GrowableArray<methodOop>(1024);

   SystemDictionary::methods_do(collect_profiled_methods);

   collected_profiled_methods->sort(&compare_methods);

   int count = collected_profiled_methods->length();

   if (count > 0) {

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

       methodOop m = collected_profiled_methods->at(index);

       ttyLocker ttyl;

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

       //m->print_name(tty);

       m->print_invocation_count();

       tty->cr();

       m->print_codes();

     }

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

   }

 }

 void print_bytecode_count() {

   if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {

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

   }

 }

 AllocStats alloc_stats;

 // General statistics printing (profiling ...)

 void print_statistics() {

 #ifdef ASSERT

   if (CountRuntimeCalls) {

     extern Histogram *RuntimeHistogram;

     RuntimeHistogram->print();

   }

   if (CountJNICalls) {

     extern Histogram *JNIHistogram;

     JNIHistogram->print();

   }

   if (CountJVMCalls) {

     extern Histogram *JVMHistogram;

     JVMHistogram->print();

   }

 #endif

   if (MemProfiling) {

     MemProfiler::disengage();

   }

   if (CITime) {

     CompileBroker::print_times();

   }

 #ifdef COMPILER1

   if ((PrintC1Statistics || LogVMOutput || LogCompilation) && UseCompiler) {

     FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintC1Statistics);

     Runtime1::print_statistics();

     Deoptimization::print_statistics();

     nmethod::print_statistics();

   }

 #endif /* COMPILER1 */

 #ifdef COMPILER2

   if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) {

     FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics);

     Compile::print_statistics();

 #ifndef COMPILER1

     Deoptimization::print_statistics();

     nmethod::print_statistics();

 #endif //COMPILER1

     SharedRuntime::print_statistics();

     os::print_statistics();

   }

   if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics) {

     OptoRuntime::print_named_counters();

   }

   if (TimeLivenessAnalysis) {

     MethodLiveness::print_times();

   }

 #ifdef ASSERT

   if (CollectIndexSetStatistics) {

     IndexSet::print_statistics();

   }

 #endif // ASSERT

 #endif // COMPILER2

   if (CountCompiledCalls) {

     print_method_invocation_histogram();

   }

   if (ProfileInterpreter || Tier1UpdateMethodData) {

     print_method_profiling_data();

   }

   if (TimeCompiler) {

     COMPILER2_PRESENT(Compile::print_timers();)

   }

   if (TimeCompilationPolicy) {

     CompilationPolicy::policy()->print_time();

   }

   if (TimeOopMap) {

     GenerateOopMap::print_time();

   }

   if (ProfilerCheckIntervals) {

     PeriodicTask::print_intervals();

   }

   if (PrintSymbolTableSizeHistogram) {

     SymbolTable::print_histogram();

   }

   if (CountBytecodes || TraceBytecodes || StopInterpreterAt) {

     BytecodeCounter::print();

   }

   if (PrintBytecodePairHistogram) {

     BytecodePairHistogram::print();

   }

   if (PrintCodeCache) {

     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);

     CodeCache::print();

   }

   if (PrintCodeCache2) {

     MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);

     CodeCache::print_internals();

   }

   if (PrintClassStatistics) {

     SystemDictionary::print_class_statistics();

   }

   if (PrintMethodStatistics) {

     SystemDictionary::print_method_statistics();

   }

   if (PrintVtableStats) {

     klassVtable::print_statistics();

     klassItable::print_statistics();

   }

   if (VerifyOops) {

     tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count());

   }

   print_bytecode_count();

   if (WizardMode) {

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

     alloc_stats.print();

     tty->cr();

   }

   if (PrintSystemDictionaryAtExit) {

     SystemDictionary::print();

   }

   if (PrintBiasedLockingStatistics) {

     BiasedLocking::print_counters();

   }

 #ifdef ENABLE_ZAP_DEAD_LOCALS

 #ifdef COMPILER2

   if (ZapDeadCompiledLocals) {

     tty->print_cr("Compile::CompiledZap_count = %d", Compile::CompiledZap_count);

     tty->print_cr("OptoRuntime::ZapDeadCompiledLocals_count = %d", OptoRuntime::ZapDeadCompiledLocals_count);

   }

 #endif // COMPILER2

 #endif // ENABLE_ZAP_DEAD_LOCALS

 }

 #else // PRODUCT MODE STATISTICS

 void print_statistics() {

   if (CITime) {

     CompileBroker::print_times();

   }

 #ifdef COMPILER2

   if (PrintPreciseBiasedLockingStatistics) {

     OptoRuntime::print_named_counters();

   }

 #endif

   if (PrintBiasedLockingStatistics) {

     BiasedLocking::print_counters();

   }

 }

 #endif

 // Helper class for registering on_exit calls through JVM_OnExit

 extern "C" {

     typedef void (*__exit_proc)(void);

 }

 class ExitProc : public CHeapObj {

  private:

   __exit_proc _proc;

   // void (*_proc)(void);

   ExitProc* _next;

  public:

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

   ExitProc(__exit_proc proc) {

     _proc = proc;

     _next = NULL;

   }

   void evaluate()               { _proc(); }

   ExitProc* next() const        { return _next; }

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

 };

 // Linked list of registered on_exit procedures

 static ExitProc* exit_procs = NULL;

 extern "C" {

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

     ExitProc *entry = new ExitProc(func);

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

     if (entry != NULL) {

       entry->set_next(exit_procs);

       exit_procs = entry;

     }

   }

 }

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

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

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

 void before_exit(JavaThread * thread) {

   #define BEFORE_EXIT_NOT_RUN 0

   #define BEFORE_EXIT_RUNNING 1

   #define BEFORE_EXIT_DONE    2

   static jint volatile _before_exit_status = BEFORE_EXIT_NOT_RUN;

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

   // JVMTI post_thread_end_event and post_vm_death_event will run native code.

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

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

   // for synchronization.

   { MutexLocker ml(BeforeExit_lock);

     switch (_before_exit_status) {

     case BEFORE_EXIT_NOT_RUN:

       _before_exit_status = BEFORE_EXIT_RUNNING;

       break;

     case BEFORE_EXIT_RUNNING:

       while (_before_exit_status == BEFORE_EXIT_RUNNING) {

         BeforeExit_lock->wait();

       }

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

       return;

     case BEFORE_EXIT_DONE:

       return;

     }

   }

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

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

   ExitProc* current = exit_procs;

   while (current != NULL) {

     ExitProc* next = current->next();

     current->evaluate();

     delete current;

     current = next;

   }

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

   if (ShowMessageBoxOnError && is_error_reported()) {

     os::infinite_sleep();

   }

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

   WatcherThread::stop();

   // Print statistics gathered (profiling ...)

   if (Arguments::has_profile()) {

     FlatProfiler::disengage();

     FlatProfiler::print(10);

   }

   // shut down the StatSampler task

   StatSampler::disengage();

   StatSampler::destroy();

 #ifndef SERIALGC

   // stop CMS threads

   if (UseConcMarkSweepGC) {

     ConcurrentMarkSweepThread::stop();

   }

 #endif // SERIALGC

   // Print GC/heap related information.

   if (PrintGCDetails) {

     Universe::print();

     AdaptiveSizePolicyOutput(0);

   }

   if (Arguments::has_alloc_profile()) {

     HandleMark hm;

     // Do one last collection to enumerate all the objects

     // allocated since the last one.

     Universe::heap()->collect(GCCause::_allocation_profiler);

     AllocationProfiler::disengage();

     AllocationProfiler::print(0);

   }

   if (PrintBytecodeHistogram) {

     BytecodeHistogram::print();

   }

   if (JvmtiExport::should_post_thread_life()) {

     JvmtiExport::post_thread_end(thread);

   }

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

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

   JvmtiExport::post_vm_death();

   Threads::shutdown_vm_agents();

   // Terminate the signal thread

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

   os::terminate_signal_thread();

   print_statistics();

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

   VTune::exit();

   { MutexLocker ml(BeforeExit_lock);

     _before_exit_status = BEFORE_EXIT_DONE;

     BeforeExit_lock->notify_all();

   }

   #undef BEFORE_EXIT_NOT_RUN

   #undef BEFORE_EXIT_RUNNING

   #undef BEFORE_EXIT_DONE

 }

 void vm_exit(int code) {

   Thread* thread = ThreadLocalStorage::thread_index() == -1 ? NULL

     : ThreadLocalStorage::get_thread_slow();

   if (thread == NULL) {

     // we have serious problems -- just exit

     vm_direct_exit(code);

   }

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

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

     VM_Exit op(code);

     if (thread->is_Java_thread())

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

     VMThread::execute(&op);

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

     vm_direct_exit(code);

   } else {

     // VM thread is gone, just exit

     vm_direct_exit(code);

   }

   ShouldNotReachHere();

 }

 void notify_vm_shutdown() {

   // For now, just a dtrace probe.

   HS_DTRACE_PROBE(hotspot, vm__shutdown);

 }

 void vm_direct_exit(int code) {

   notify_vm_shutdown();

   ::exit(code);

 }

 void vm_perform_shutdown_actions() {

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

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

   // kinds of assertions to trigger in debug mode.

   if (is_init_completed()) {

     Thread* thread = Thread::current();

     if (thread->is_Java_thread()) {

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

       // handlers call back to the VM)

       JavaThread* jt = (JavaThread*)thread;

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

       // thread_in_native

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

       jt->set_thread_state(_thread_in_native);

     }

   }

   notify_vm_shutdown();

 }

 void vm_shutdown()

 {

   vm_perform_shutdown_actions();

   os::shutdown();

 }

 void vm_abort(bool dump_core) {

   vm_perform_shutdown_actions();

   os::abort(dump_core);

   ShouldNotReachHere();

 }

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

   if (error != NULL) {

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

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

     if (message != NULL) {

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

     }

     else {

       tty->cr();

     }

   }

   if (ShowMessageBoxOnError && WizardMode) {

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

   }

 }

 void vm_exit_during_initialization(Handle exception) {

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

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

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

   // that no pending exceptions exist.

   Thread *THREAD = Thread::current();

   if (HAS_PENDING_EXCEPTION) {

     CLEAR_PENDING_EXCEPTION;

   }

   java_lang_Throwable::print(exception, tty);

   tty->cr();

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

   tty->cr();

   vm_notify_during_shutdown(NULL, NULL);

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

   vm_abort(false);

 }

 void vm_exit_during_initialization(symbolHandle ex, const char* message) {

   ResourceMark rm;

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

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

   vm_abort(false);

 }

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

   vm_notify_during_shutdown(error, message);

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

   vm_abort(false);

 }

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

   vm_notify_during_shutdown(error, message);

   vm_shutdown();

 }

 JDK_Version JDK_Version::_current;

 void JDK_Version::initialize() {

   jdk_version_info info;

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

   void *lib_handle = os::native_java_library();

   jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t,

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

   if (func == NULL) {

     // JDK older than 1.6

     _current._partially_initialized = true;

   } else {

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

     int major = JDK_VERSION_MAJOR(info.jdk_version);

     int minor = JDK_VERSION_MINOR(info.jdk_version);

     int micro = JDK_VERSION_MICRO(info.jdk_version);

     int build = JDK_VERSION_BUILD(info.jdk_version);

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

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

       major = minor;

       minor = micro;

       micro = 0;

     }

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

                            info.special_update_version, build,

                            info.thread_park_blocker == 1);

   }

 }

 void JDK_Version::fully_initialize(

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

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

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

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

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

   if (major < 5) {

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

     micro = minor;

     minor = major;

     major = 1;

   }

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

 }

 void JDK_Version_init() {

   JDK_Version::initialize();

 }

 static int64_t encode_jdk_version(const JDK_Version& v) {

   return

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

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

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

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

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

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

 }

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

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

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

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

   }

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

   if (is_partially_initialized()) {

     assert(other.major_version() >= 6,

            "Invalid JDK version comparison during initialization");

     return -1;

   } else {

     uint64_t e = encode_jdk_version(*this);

     uint64_t o = encode_jdk_version(other);

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

   }

 }

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

   size_t index = 0;

   if (!is_valid()) {

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

   } else if (is_partially_initialized()) {

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

   } else {

     index += jio_snprintf(

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

     if (_micro > 0) {

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

     }

     if (_update > 0) {

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

     }

     if (_special > 0) {

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

     }

     if (_build > 0) {

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

     }

   }

 }