| /* |
| * Copyright (c) 2012, 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 "jfr/jfrEvents.hpp" |
| #include "jfr/jni/jfrJavaSupport.hpp" |
| #include "jfr/leakprofiler/checkpoint/objectSampleCheckpoint.hpp" |
| #include "jfr/periodic/jfrThreadCPULoadEvent.hpp" |
| #include "jfr/recorder/jfrRecorder.hpp" |
| #include "jfr/recorder/checkpoint/jfrCheckpointManager.hpp" |
| #include "jfr/recorder/checkpoint/types/traceid/jfrTraceId.inline.hpp" |
| #include "jfr/recorder/service/jfrOptionSet.hpp" |
| #include "jfr/recorder/storage/jfrStorage.hpp" |
| #include "jfr/support/jfrThreadLocal.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "runtime/os.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "utilities/sizes.hpp" |
| |
| /* This data structure is per thread and only accessed by the thread itself, no locking required */ |
| JfrThreadLocal::JfrThreadLocal() : |
| _java_event_writer(NULL), |
| _java_buffer(NULL), |
| _native_buffer(NULL), |
| _shelved_buffer(NULL), |
| _stackframes(NULL), |
| _trace_id(JfrTraceId::assign_thread_id()), |
| _thread(), |
| _data_lost(0), |
| _stack_trace_id(max_julong), |
| _user_time(0), |
| _cpu_time(0), |
| _wallclock_time(os::javaTimeNanos()), |
| _stack_trace_hash(0), |
| _stackdepth(0), |
| _entering_suspend_flag(0), |
| _excluded(false), |
| _dead(false) {} |
| |
| u8 JfrThreadLocal::add_data_lost(u8 value) { |
| _data_lost += value; |
| return _data_lost; |
| } |
| |
| bool JfrThreadLocal::has_thread_blob() const { |
| return _thread.valid(); |
| } |
| |
| void JfrThreadLocal::set_thread_blob(const JfrBlobHandle& ref) { |
| assert(!_thread.valid(), "invariant"); |
| _thread = ref; |
| } |
| |
| const JfrBlobHandle& JfrThreadLocal::thread_blob() const { |
| return _thread; |
| } |
| |
| static void send_java_thread_start_event(JavaThread* jt) { |
| EventThreadStart event; |
| event.set_thread(jt->jfr_thread_local()->thread_id()); |
| event.commit(); |
| } |
| |
| void JfrThreadLocal::on_start(Thread* t) { |
| assert(t != NULL, "invariant"); |
| assert(Thread::current() == t, "invariant"); |
| JfrJavaSupport::on_thread_start(t); |
| if (JfrRecorder::is_recording()) { |
| if (!t->jfr_thread_local()->is_excluded()) { |
| JfrCheckpointManager::write_thread_checkpoint(t); |
| if (t->is_Java_thread()) { |
| send_java_thread_start_event((JavaThread*)t); |
| } |
| } |
| } |
| } |
| |
| static void send_java_thread_end_events(traceid id, JavaThread* jt) { |
| assert(jt != NULL, "invariant"); |
| assert(Thread::current() == jt, "invariant"); |
| assert(jt->jfr_thread_local()->trace_id() == id, "invariant"); |
| if (JfrRecorder::is_recording()) { |
| EventThreadEnd event; |
| event.set_thread(id); |
| event.commit(); |
| JfrThreadCPULoadEvent::send_event_for_thread(jt); |
| } |
| } |
| |
| void JfrThreadLocal::release(Thread* t) { |
| if (has_java_event_writer()) { |
| assert(t->is_Java_thread(), "invariant"); |
| JfrJavaSupport::destroy_global_jni_handle(java_event_writer()); |
| _java_event_writer = NULL; |
| } |
| if (has_native_buffer()) { |
| JfrStorage::release_thread_local(native_buffer(), t); |
| _native_buffer = NULL; |
| } |
| if (has_java_buffer()) { |
| JfrStorage::release_thread_local(java_buffer(), t); |
| _java_buffer = NULL; |
| } |
| if (_stackframes != NULL) { |
| FREE_C_HEAP_ARRAY(JfrStackFrame, _stackframes); |
| _stackframes = NULL; |
| } |
| } |
| |
| void JfrThreadLocal::release(JfrThreadLocal* tl, Thread* t) { |
| assert(tl != NULL, "invariant"); |
| assert(t != NULL, "invariant"); |
| assert(Thread::current() == t, "invariant"); |
| assert(!tl->is_dead(), "invariant"); |
| assert(tl->shelved_buffer() == NULL, "invariant"); |
| tl->_dead = true; |
| tl->release(t); |
| } |
| |
| void JfrThreadLocal::on_exit(Thread* t) { |
| assert(t != NULL, "invariant"); |
| JfrThreadLocal * const tl = t->jfr_thread_local(); |
| assert(!tl->is_dead(), "invariant"); |
| if (JfrRecorder::is_recording()) { |
| if (t->is_Java_thread()) { |
| JavaThread* const jt = (JavaThread*)t; |
| ObjectSampleCheckpoint::on_thread_exit(jt); |
| send_java_thread_end_events(tl->thread_id(), jt); |
| } |
| } |
| release(tl, Thread::current()); // because it could be that Thread::current() != t |
| } |
| |
| static JfrBuffer* acquire_buffer(bool excluded) { |
| JfrBuffer* const buffer = JfrStorage::acquire_thread_local(Thread::current()); |
| if (buffer != NULL && excluded) { |
| buffer->set_excluded(); |
| } |
| return buffer; |
| } |
| |
| JfrBuffer* JfrThreadLocal::install_native_buffer() const { |
| assert(!has_native_buffer(), "invariant"); |
| _native_buffer = acquire_buffer(_excluded); |
| return _native_buffer; |
| } |
| |
| JfrBuffer* JfrThreadLocal::install_java_buffer() const { |
| assert(!has_java_buffer(), "invariant"); |
| assert(!has_java_event_writer(), "invariant"); |
| _java_buffer = acquire_buffer(_excluded); |
| return _java_buffer; |
| } |
| |
| JfrStackFrame* JfrThreadLocal::install_stackframes() const { |
| assert(_stackframes == NULL, "invariant"); |
| _stackframes = NEW_C_HEAP_ARRAY(JfrStackFrame, stackdepth(), mtTracing); |
| return _stackframes; |
| } |
| |
| ByteSize JfrThreadLocal::trace_id_offset() { |
| return in_ByteSize(offset_of(JfrThreadLocal, _trace_id)); |
| } |
| |
| ByteSize JfrThreadLocal::java_event_writer_offset() { |
| return in_ByteSize(offset_of(JfrThreadLocal, _java_event_writer)); |
| } |
| |
| void JfrThreadLocal::exclude(Thread* t) { |
| assert(t != NULL, "invariant"); |
| t->jfr_thread_local()->_excluded = true; |
| t->jfr_thread_local()->release(t); |
| } |
| |
| void JfrThreadLocal::include(Thread* t) { |
| assert(t != NULL, "invariant"); |
| t->jfr_thread_local()->_excluded = false; |
| t->jfr_thread_local()->release(t); |
| } |
| |
| u4 JfrThreadLocal::stackdepth() const { |
| return _stackdepth != 0 ? _stackdepth : (u4)JfrOptionSet::stackdepth(); |
| } |