| /* |
| * Copyright (c) 2016, 2019, 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 "classfile/javaClasses.inline.hpp" |
| #include "code/codeBlob.hpp" |
| #include "code/codeCache.hpp" |
| #include "gc/shared/gcCause.hpp" |
| #include "gc/shared/gcName.hpp" |
| #include "gc/shared/gcTrace.hpp" |
| #include "gc/shared/gcWhen.hpp" |
| #include "jfr/leakprofiler/checkpoint/objectSampleCheckpoint.hpp" |
| #include "jfr/leakprofiler/leakProfiler.hpp" |
| #include "jfr/recorder/checkpoint/jfrCheckpointManager.hpp" |
| #include "jfr/recorder/checkpoint/types/jfrType.hpp" |
| #include "jfr/recorder/jfrRecorder.hpp" |
| #include "jfr/recorder/checkpoint/types/jfrThreadGroup.hpp" |
| #include "jfr/recorder/checkpoint/types/jfrThreadState.hpp" |
| #include "jfr/recorder/checkpoint/types/jfrTypeSet.hpp" |
| #include "jfr/support/jfrThreadLocal.hpp" |
| #include "jfr/writers/jfrJavaEventWriter.hpp" |
| #include "memory/metaspaceGCThresholdUpdater.hpp" |
| #include "memory/referenceType.hpp" |
| #include "memory/universe.hpp" |
| #include "oops/compressedOops.hpp" |
| #include "runtime/flags/jvmFlag.hpp" |
| #include "runtime/mutexLocker.hpp" |
| #include "runtime/osThread.hpp" |
| #include "runtime/safepoint.hpp" |
| #include "runtime/synchronizer.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "runtime/vmOperations.hpp" |
| |
| #ifdef COMPILER2 |
| #include "opto/compile.hpp" |
| #include "opto/node.hpp" |
| #endif |
| |
| // Requires a ResourceMark for get_thread_name/as_utf8 |
| class JfrCheckpointThreadClosure : public ThreadClosure { |
| private: |
| JfrCheckpointWriter& _writer; |
| JfrCheckpointContext _ctx; |
| const int64_t _count_position; |
| Thread* const _curthread; |
| u4 _count; |
| |
| public: |
| JfrCheckpointThreadClosure(JfrCheckpointWriter& writer) : _writer(writer), |
| _ctx(writer.context()), |
| _count_position(writer.reserve(sizeof(u4))), |
| _curthread(Thread::current()), |
| _count(0) { |
| } |
| |
| ~JfrCheckpointThreadClosure() { |
| if (_count == 0) { |
| // restore |
| _writer.set_context(_ctx); |
| return; |
| } |
| _writer.write_count(_count, _count_position); |
| } |
| |
| void do_thread(Thread* t); |
| }; |
| |
| // Requires a ResourceMark for get_thread_name/as_utf8 |
| void JfrCheckpointThreadClosure::do_thread(Thread* t) { |
| assert(t != NULL, "invariant"); |
| assert_locked_or_safepoint(Threads_lock); |
| const JfrThreadLocal* const tl = t->jfr_thread_local(); |
| assert(tl != NULL, "invariant"); |
| if (tl->is_dead()) { |
| return; |
| } |
| ++_count; |
| _writer.write_key(tl->thread_id()); |
| _writer.write(t->name()); |
| const OSThread* const os_thread = t->osthread(); |
| _writer.write<traceid>(os_thread != NULL ? os_thread->thread_id() : 0); |
| if (t->is_Java_thread()) { |
| JavaThread* const jt = (JavaThread*)t; |
| _writer.write(jt->name()); |
| _writer.write(java_lang_Thread::thread_id(jt->threadObj())); |
| _writer.write(JfrThreadGroup::thread_group_id(jt, _curthread)); |
| // since we are iterating threads during a safepoint, also issue notification |
| JfrJavaEventWriter::notify(jt); |
| return; |
| } |
| _writer.write((const char*)NULL); // java name |
| _writer.write((traceid)0); // java thread id |
| _writer.write((traceid)0); // java thread group |
| } |
| |
| void JfrThreadConstantSet::serialize(JfrCheckpointWriter& writer) { |
| assert(SafepointSynchronize::is_at_safepoint(), "invariant"); |
| JfrCheckpointThreadClosure tc(writer); |
| Threads::threads_do(&tc); |
| } |
| |
| void JfrThreadGroupConstant::serialize(JfrCheckpointWriter& writer) { |
| assert(SafepointSynchronize::is_at_safepoint(), "invariant"); |
| JfrThreadGroup::serialize(writer); |
| } |
| |
| static const char* flag_value_origin_to_string(JVMFlag::Flags origin) { |
| switch (origin) { |
| case JVMFlag::DEFAULT: return "Default"; |
| case JVMFlag::COMMAND_LINE: return "Command line"; |
| case JVMFlag::ENVIRON_VAR: return "Environment variable"; |
| case JVMFlag::CONFIG_FILE: return "Config file"; |
| case JVMFlag::MANAGEMENT: return "Management"; |
| case JVMFlag::ERGONOMIC: return "Ergonomic"; |
| case JVMFlag::ATTACH_ON_DEMAND: return "Attach on demand"; |
| case JVMFlag::INTERNAL: return "Internal"; |
| default: ShouldNotReachHere(); return ""; |
| } |
| } |
| |
| void FlagValueOriginConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = JVMFlag::LAST_VALUE_ORIGIN + 1; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(flag_value_origin_to_string((JVMFlag::Flags)i)); |
| } |
| } |
| |
| void MonitorInflateCauseConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = ObjectSynchronizer::inflate_cause_nof; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(ObjectSynchronizer::inflate_cause_name((ObjectSynchronizer::InflateCause)i)); |
| } |
| } |
| |
| void GCCauseConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = GCCause::_last_gc_cause; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(GCCause::to_string((GCCause::Cause)i)); |
| } |
| } |
| |
| void GCNameConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = GCNameEndSentinel; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(GCNameHelper::to_string((GCName)i)); |
| } |
| } |
| |
| void GCWhenConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = GCWhen::GCWhenEndSentinel; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(GCWhen::to_string((GCWhen::Type)i)); |
| } |
| } |
| |
| void GCThresholdUpdaterConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = MetaspaceGCThresholdUpdater::Last; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(MetaspaceGCThresholdUpdater::to_string((MetaspaceGCThresholdUpdater::Type)i)); |
| } |
| } |
| |
| void MetadataTypeConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = Metaspace::MetadataTypeCount; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(Metaspace::metadata_type_name((Metaspace::MetadataType)i)); |
| } |
| } |
| |
| void MetaspaceObjectTypeConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = MetaspaceObj::_number_of_types; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(MetaspaceObj::type_name((MetaspaceObj::Type)i)); |
| } |
| } |
| |
| static const char* reference_type_to_string(ReferenceType rt) { |
| switch (rt) { |
| case REF_NONE: return "None reference"; |
| case REF_OTHER: return "Other reference"; |
| case REF_SOFT: return "Soft reference"; |
| case REF_WEAK: return "Weak reference"; |
| case REF_FINAL: return "Final reference"; |
| case REF_PHANTOM: return "Phantom reference"; |
| default: |
| ShouldNotReachHere(); |
| return NULL; |
| } |
| } |
| |
| void ReferenceTypeConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = REF_PHANTOM + 1; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(reference_type_to_string((ReferenceType)i)); |
| } |
| } |
| |
| void NarrowOopModeConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = CompressedOops::HeapBasedNarrowOop + 1; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(CompressedOops::mode_to_string((CompressedOops::Mode)i)); |
| } |
| } |
| |
| void CompilerPhaseTypeConstant::serialize(JfrCheckpointWriter& writer) { |
| #ifdef COMPILER2 |
| static const u4 nof_entries = PHASE_NUM_TYPES; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(CompilerPhaseTypeHelper::to_string((CompilerPhaseType)i)); |
| } |
| #endif |
| } |
| |
| void CodeBlobTypeConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = CodeBlobType::NumTypes; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(CodeCache::get_code_heap_name(i)); |
| } |
| }; |
| |
| void VMOperationTypeConstant::serialize(JfrCheckpointWriter& writer) { |
| static const u4 nof_entries = VM_Operation::VMOp_Terminating; |
| writer.write_count(nof_entries); |
| for (u4 i = 0; i < nof_entries; ++i) { |
| writer.write_key(i); |
| writer.write(VM_Operation::name(VM_Operation::VMOp_Type(i))); |
| } |
| } |
| |
| class TypeSetSerialization { |
| private: |
| bool _class_unload; |
| public: |
| explicit TypeSetSerialization(bool class_unload) : _class_unload(class_unload) {} |
| void write(JfrCheckpointWriter& writer, JfrCheckpointWriter* leakp_writer) { |
| JfrTypeSet::serialize(&writer, leakp_writer, _class_unload); |
| } |
| }; |
| |
| void ClassUnloadTypeSet::serialize(JfrCheckpointWriter& writer) { |
| TypeSetSerialization type_set(true); |
| if (LeakProfiler::is_running()) { |
| JfrCheckpointWriter leakp_writer(false, true, Thread::current()); |
| type_set.write(writer, &leakp_writer); |
| ObjectSampleCheckpoint::install(leakp_writer, true, true); |
| return; |
| } |
| type_set.write(writer, NULL); |
| }; |
| |
| void TypeSet::serialize(JfrCheckpointWriter& writer) { |
| TypeSetSerialization type_set(false); |
| if (LeakProfiler::is_running()) { |
| JfrCheckpointWriter leakp_writer(false, true, Thread::current()); |
| type_set.write(writer, &leakp_writer); |
| ObjectSampleCheckpoint::install(leakp_writer, false, true); |
| return; |
| } |
| type_set.write(writer, NULL); |
| }; |
| |
| void ThreadStateConstant::serialize(JfrCheckpointWriter& writer) { |
| JfrThreadState::serialize(writer); |
| } |
| |
| void JfrThreadConstant::serialize(JfrCheckpointWriter& writer) { |
| assert(_thread != NULL, "invariant"); |
| assert(_thread == Thread::current(), "invariant"); |
| assert(_thread->is_Java_thread(), "invariant"); |
| assert(!_thread->jfr_thread_local()->has_thread_checkpoint(), "invariant"); |
| ResourceMark rm(_thread); |
| const oop threadObj = _thread->threadObj(); |
| assert(threadObj != NULL, "invariant"); |
| const u8 java_lang_thread_id = java_lang_Thread::thread_id(threadObj); |
| const char* const thread_name = _thread->name(); |
| const traceid thread_group_id = JfrThreadGroup::thread_group_id(_thread); |
| writer.write_count(1); |
| writer.write_key(_thread->jfr_thread_local()->thread_id()); |
| writer.write(thread_name); |
| writer.write((traceid)_thread->osthread()->thread_id()); |
| writer.write(thread_name); |
| writer.write(java_lang_thread_id); |
| writer.write(thread_group_id); |
| JfrThreadGroup::serialize(&writer, thread_group_id); |
| } |