/* * Copyright (c) 1997, 2018, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "jvm.h" #include "aot/aotLoader.hpp" #include "classfile/classLoader.hpp" #include "classfile/stringTable.hpp" #include "classfile/systemDictionary.hpp" #include "code/codeCache.hpp" #include "compiler/compileBroker.hpp" #include "compiler/compilerOracle.hpp" #include "gc/shared/genCollectedHeap.hpp" #include "interpreter/bytecodeHistogram.hpp" #if INCLUDE_JVMCI #include "jvmci/jvmciCompiler.hpp" #include "jvmci/jvmciRuntime.hpp" #endif #include "logging/log.hpp" #include "logging/logStream.hpp" #include "memory/oopFactory.hpp" #include "memory/resourceArea.hpp" #include "memory/universe.hpp" #include "oops/constantPool.hpp" #include "oops/generateOopMap.hpp" #include "oops/instanceKlass.hpp" #include "oops/instanceOop.hpp" #include "oops/method.hpp" #include "oops/objArrayOop.hpp" #include "oops/oop.inline.hpp" #include "oops/symbol.hpp" #include "prims/jvmtiExport.hpp" #include "runtime/arguments.hpp" #include "runtime/biasedLocking.hpp" #include "runtime/compilationPolicy.hpp" #include "runtime/deoptimization.hpp" #include "runtime/init.hpp" #include "runtime/interfaceSupport.inline.hpp" #include "runtime/java.hpp" #include "runtime/memprofiler.hpp" #include "runtime/sharedRuntime.hpp" #include "runtime/statSampler.hpp" #include "runtime/sweeper.hpp" #include "runtime/task.hpp" #include "runtime/thread.inline.hpp" #include "runtime/timer.hpp" #include "runtime/vm_operations.hpp" #include "services/memTracker.hpp" #include "trace/traceMacros.hpp" #include "trace/tracing.hpp" #include "utilities/dtrace.hpp" #include "utilities/globalDefinitions.hpp" #include "utilities/histogram.hpp" #include "utilities/macros.hpp" #include "utilities/vmError.hpp" #if INCLUDE_ALL_GCS #include "gc/cms/concurrentMarkSweepThread.hpp" #include "gc/parallel/psScavenge.hpp" #endif // INCLUDE_ALL_GCS #ifdef COMPILER1 #include "c1/c1_Compiler.hpp" #include "c1/c1_Runtime1.hpp" #endif #ifdef COMPILER2 #include "code/compiledIC.hpp" #include "compiler/methodLiveness.hpp" #include "opto/compile.hpp" #include "opto/indexSet.hpp" #include "opto/runtime.hpp" #endif GrowableArray* collected_profiled_methods; int compare_methods(Method** a, Method** b) { // %%% there can be 32-bit overflow here return ((*b)->invocation_count() + (*b)->compiled_invocation_count()) - ((*a)->invocation_count() + (*a)->compiled_invocation_count()); } void collect_profiled_methods(Method* m) { Thread* thread = Thread::current(); methodHandle mh(thread, m); if ((m->method_data() != NULL) && (PrintMethodData || CompilerOracle::should_print(mh))) { collected_profiled_methods->push(m); } } void print_method_profiling_data() { if (ProfileInterpreter COMPILER1_PRESENT(|| C1UpdateMethodData) && (PrintMethodData || CompilerOracle::should_print_methods())) { ResourceMark rm; HandleMark hm; collected_profiled_methods = new GrowableArray(1024); SystemDictionary::methods_do(collect_profiled_methods); collected_profiled_methods->sort(&compare_methods); int count = collected_profiled_methods->length(); int total_size = 0; if (count > 0) { for (int index = 0; index < count; index++) { Method* m = collected_profiled_methods->at(index); ttyLocker ttyl; tty->print_cr("------------------------------------------------------------------------"); m->print_invocation_count(); tty->print_cr(" mdo size: %d bytes", m->method_data()->size_in_bytes()); tty->cr(); // Dump data on parameters if any if (m->method_data() != NULL && m->method_data()->parameters_type_data() != NULL) { tty->fill_to(2); m->method_data()->parameters_type_data()->print_data_on(tty); } m->print_codes(); total_size += m->method_data()->size_in_bytes(); } tty->print_cr("------------------------------------------------------------------------"); tty->print_cr("Total MDO size: %d bytes", total_size); } } } #ifndef PRODUCT // Statistics printing (method invocation histogram) GrowableArray* collected_invoked_methods; void collect_invoked_methods(Method* m) { if (m->invocation_count() + m->compiled_invocation_count() >= 1 ) { collected_invoked_methods->push(m); } } void print_method_invocation_histogram() { ResourceMark rm; HandleMark hm; collected_invoked_methods = new GrowableArray(1024); SystemDictionary::methods_do(collect_invoked_methods); collected_invoked_methods->sort(&compare_methods); // tty->cr(); tty->print_cr("Histogram Over Method Invocation Counters (cutoff = " INTX_FORMAT "):", 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++) { Method* 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_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(); SharedRuntime::print_statistics(); } #endif /* COMPILER1 */ #ifdef COMPILER2 if ((PrintOptoStatistics || LogVMOutput || LogCompilation) && UseCompiler) { FlagSetting fs(DisplayVMOutput, DisplayVMOutput && PrintOptoStatistics); Compile::print_statistics(); #ifndef COMPILER1 Deoptimization::print_statistics(); SharedRuntime::print_statistics(); #endif //COMPILER1 os::print_statistics(); } if (PrintLockStatistics || PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { OptoRuntime::print_named_counters(); } if (TimeLivenessAnalysis) { MethodLiveness::print_times(); } #ifdef ASSERT if (CollectIndexSetStatistics) { IndexSet::print_statistics(); } #endif // ASSERT #else #ifdef INCLUDE_JVMCI #ifndef COMPILER1 if ((TraceDeoptimization || LogVMOutput || LogCompilation) && UseCompiler) { FlagSetting fs(DisplayVMOutput, DisplayVMOutput && TraceDeoptimization); Deoptimization::print_statistics(); SharedRuntime::print_statistics(); } #endif #endif #endif if (PrintAOTStatistics) { AOTLoader::print_statistics(); } if (PrintNMethodStatistics) { nmethod::print_statistics(); } if (CountCompiledCalls) { print_method_invocation_histogram(); } print_method_profiling_data(); 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 (PrintMethodFlushingStatistics) { NMethodSweeper::print(tty); } // CodeHeap State Analytics. LogTarget(Trace, codecache) lt; if (lt.is_enabled()) { CompileBroker::print_heapinfo(NULL, "all", "4096"); // details } if (PrintCodeCache2) { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); CodeCache::print_internals(); } if (PrintVtableStats) { klassVtable::print_statistics(); klassItable::print_statistics(); } if (VerifyOops) { tty->print_cr("+VerifyOops count: %d", StubRoutines::verify_oop_count()); } print_bytecode_count(); if (PrintMallocStatistics) { tty->print("allocation stats: "); alloc_stats.print(); tty->cr(); } if (PrintSystemDictionaryAtExit) { ResourceMark rm; SystemDictionary::print(); ClassLoaderDataGraph::print(); } if (LogTouchedMethods && PrintTouchedMethodsAtExit) { Method::print_touched_methods(tty); } if (PrintBiasedLockingStatistics) { BiasedLocking::print_counters(); } // Native memory tracking data if (PrintNMTStatistics) { MemTracker::final_report(tty); } ThreadsSMRSupport::log_statistics(); } #else // PRODUCT MODE STATISTICS void print_statistics() { if (PrintMethodData) { print_method_profiling_data(); } if (CITime) { CompileBroker::print_times(); } if (PrintCodeCache) { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); CodeCache::print(); } if (PrintMethodFlushingStatistics) { NMethodSweeper::print(tty); } // CodeHeap State Analytics. LogTarget(Trace, codecache) lt; if (lt.is_enabled()) { CompileBroker::print_heapinfo(NULL, "all", "4096"); // details } #ifdef COMPILER2 if (PrintPreciseBiasedLockingStatistics || PrintPreciseRTMLockingStatistics) { OptoRuntime::print_named_counters(); } #endif if (PrintBiasedLockingStatistics) { BiasedLocking::print_counters(); } // Native memory tracking data if (PrintNMTStatistics) { MemTracker::final_report(tty); } if (LogTouchedMethods && PrintTouchedMethodsAtExit) { Method::print_touched_methods(tty); } ThreadsSMRSupport::log_statistics(); } #endif // 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: // need block to avoid SS compiler bug { return; } } } #if INCLUDE_JVMCI // We are not using CATCH here because we want the exit to continue normally. Thread* THREAD = thread; JVMCIRuntime::shutdown(THREAD); if (HAS_PENDING_EXCEPTION) { HandleMark hm(THREAD); Handle exception(THREAD, PENDING_EXCEPTION); CLEAR_PENDING_EXCEPTION; java_lang_Throwable::java_printStackTrace(exception, THREAD); } #endif // Hang forever on exit if we're reporting an error. if (ShowMessageBoxOnError && VMError::is_error_reported()) { os::infinite_sleep(); } EventThreadEnd event; if (event.should_commit()) { event.set_thread(THREAD_TRACE_ID(thread)); event.commit(); } TRACE_VM_EXIT(); // Stop the WatcherThread. We do this before disenrolling various // PeriodicTasks to reduce the likelihood of races. if (PeriodicTask::num_tasks() > 0) { WatcherThread::stop(); } // shut down the StatSampler task StatSampler::disengage(); StatSampler::destroy(); // Stop concurrent GC threads Universe::heap()->stop(); // Print GC/heap related information. Log(gc, heap, exit) log; if (log.is_info()) { ResourceMark rm; LogStream ls_info(log.info()); Universe::print_on(&ls_info); if (log.is_trace()) { LogStream ls_trace(log.trace()); ClassLoaderDataGraph::print_on(&ls_trace); } } 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(); { MutexLocker ml(BeforeExit_lock); _before_exit_status = BEFORE_EXIT_DONE; BeforeExit_lock->notify_all(); } if (VerifyStringTableAtExit) { int fail_cnt = 0; { MutexLocker ml(StringTable_lock); fail_cnt = StringTable::verify_and_compare_entries(); } if (fail_cnt != 0) { tty->print_cr("ERROR: fail_cnt=%d", fail_cnt); guarantee(fail_cnt == 0, "unexpected StringTable verification failures"); } } #undef BEFORE_EXIT_NOT_RUN #undef BEFORE_EXIT_RUNNING #undef BEFORE_EXIT_DONE } void vm_exit(int code) { Thread* thread = ThreadLocalStorage::is_initialized() ? Thread::current_or_null() : NULL; if (thread == NULL) { // very early initialization failure -- 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. HOTSPOT_VM_SHUTDOWN(); HS_DTRACE_WORKAROUND_TAIL_CALL_BUG(); } void vm_direct_exit(int code) { notify_vm_shutdown(); os::wait_for_keypress_at_exit(); os::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_or_null(); if (thread != NULL && 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::wait_for_keypress_at_exit(); os::shutdown(); } void vm_abort(bool dump_core) { vm_perform_shutdown_actions(); os::wait_for_keypress_at_exit(); // Flush stdout and stderr before abort. fflush(stdout); fflush(stderr); 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() { vm_notify_during_shutdown(NULL, NULL); // Failure during initialization, we don't want to dump core vm_abort(false); } 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(); // can't be NULL if (HAS_PENDING_EXCEPTION) { CLEAR_PENDING_EXCEPTION; } 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(Symbol* 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; const char* JDK_Version::_runtime_name; const char* JDK_Version::_runtime_version; 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")); assert(func != NULL, "Support for JDK 1.5 or older has been removed after JEP-223"); (*func)(&info, sizeof(info)); int major = JDK_VERSION_MAJOR(info.jdk_version); int minor = JDK_VERSION_MINOR(info.jdk_version); int security = JDK_VERSION_SECURITY(info.jdk_version); int build = JDK_VERSION_BUILD(info.jdk_version); // Incompatible with pre-4243978 JDK. if (info.pending_list_uses_discovered_field == 0) { vm_exit_during_initialization( "Incompatible JDK is not using Reference.discovered field for pending list"); } _current = JDK_Version(major, minor, security, info.patch_version, build, info.thread_park_blocker == 1, info.post_vm_init_hook_enabled == 1); } void JDK_Version_init() { JDK_Version::initialize(); } static int64_t encode_jdk_version(const JDK_Version& v) { return ((int64_t)v.major_version() << (BitsPerByte * 4)) | ((int64_t)v.minor_version() << (BitsPerByte * 3)) | ((int64_t)v.security_version() << (BitsPerByte * 2)) | ((int64_t)v.patch_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?)"); 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 { assert(buffer && buflen > 0, "call with useful buffer"); size_t index = 0; if (!is_valid()) { jio_snprintf(buffer, buflen, "%s", "(uninitialized)"); } else { int rc = jio_snprintf( &buffer[index], buflen - index, "%d.%d", _major, _minor); if (rc == -1) return; index += rc; if (_security > 0) { rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _security); if (rc == -1) return; index += rc; } if (_patch > 0) { rc = jio_snprintf(&buffer[index], buflen - index, ".%d", _patch); if (rc == -1) return; index += rc; } if (_build > 0) { rc = jio_snprintf(&buffer[index], buflen - index, "+%d", _build); if (rc == -1) return; index += rc; } } }