--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/runtime/java.cpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,593 @@
+/*
+ * Copyright 1997-2007 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();
+
+ // shut down the TimeMillisUpdateTask
+ if (CacheTimeMillis) {
+ TimeMillisUpdateTask::disengage();
+ }
+
+#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() {
+ vm_perform_shutdown_actions();
+ os::abort(PRODUCT_ONLY(false));
+ 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);
+ vm_abort();
+}
+
+void vm_exit_during_initialization(symbolHandle ex, const char* message) {
+ ResourceMark rm;
+ vm_notify_during_shutdown(ex->as_C_string(), message);
+ vm_abort();
+}
+
+void vm_exit_during_initialization(const char* error, const char* message) {
+ vm_notify_during_shutdown(error, message);
+ vm_abort();
+}
+
+void vm_shutdown_during_initialization(const char* error, const char* message) {
+ vm_notify_during_shutdown(error, message);
+ vm_shutdown();
+}
+
+jdk_version_info JDK_Version::_version_info = {0};
+bool JDK_Version::_pre_jdk16_version = false;
+int JDK_Version::_jdk_version = 0;
+
+void JDK_Version::initialize() {
+ void *lib_handle = os::native_java_library();
+ jdk_version_info_fn_t func =
+ CAST_TO_FN_PTR(jdk_version_info_fn_t, hpi::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
+
+ if (func == NULL) {
+ // JDK older than 1.6
+ _pre_jdk16_version = true;
+ return;
+ }
+
+ if (func != NULL) {
+ (*func)(&_version_info, sizeof(_version_info));
+ }
+ if (jdk_major_version() == 1) {
+ _jdk_version = jdk_minor_version();
+ } else {
+ // If the release version string is changed to n.x.x (e.g. 7.0.0) in a future release
+ _jdk_version = jdk_major_version();
+ }
+}
+
+void JDK_Version_init() {
+ JDK_Version::initialize();
+}