1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/jfr/support/jfrThreadLocal.cpp Mon Aug 12 18:30:40 2019 +0300
1.3 @@ -0,0 +1,141 @@
1.4 +/*
1.5 + * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#include "precompiled.hpp"
1.29 +#include "jfr/jni/jfrJavaSupport.hpp"
1.30 +#include "jfr/periodic/jfrThreadCPULoadEvent.hpp"
1.31 +#include "jfr/recorder/jfrRecorder.hpp"
1.32 +#include "jfr/recorder/checkpoint/jfrCheckpointManager.hpp"
1.33 +#include "jfr/recorder/checkpoint/types/traceid/jfrTraceId.inline.hpp"
1.34 +#include "jfr/recorder/service/jfrOptionSet.hpp"
1.35 +#include "jfr/recorder/storage/jfrStorage.hpp"
1.36 +#include "jfr/recorder/stacktrace/jfrStackTraceRepository.hpp"
1.37 +#include "jfr/support/jfrThreadLocal.hpp"
1.38 +#include "memory/allocation.inline.hpp"
1.39 +#include "runtime/os.hpp"
1.40 +#include "runtime/thread.inline.hpp"
1.41 +
1.42 +/* This data structure is per thread and only accessed by the thread itself, no locking required */
1.43 +JfrThreadLocal::JfrThreadLocal() :
1.44 + _java_event_writer(NULL),
1.45 + _java_buffer(NULL),
1.46 + _native_buffer(NULL),
1.47 + _shelved_buffer(NULL),
1.48 + _stackframes(NULL),
1.49 + _trace_id(JfrTraceId::assign_thread_id()),
1.50 + _thread_cp(),
1.51 + _data_lost(0),
1.52 + _stack_trace_id(max_julong),
1.53 + _user_time(0),
1.54 + _cpu_time(0),
1.55 + _wallclock_time(os::javaTimeNanos()),
1.56 + _stack_trace_hash(0),
1.57 + _stackdepth(0),
1.58 + _entering_suspend_flag(0),
1.59 + _dead(false) {}
1.60 +
1.61 +u8 JfrThreadLocal::add_data_lost(u8 value) {
1.62 + _data_lost += value;
1.63 + return _data_lost;
1.64 +}
1.65 +
1.66 +bool JfrThreadLocal::has_thread_checkpoint() const {
1.67 + return _thread_cp.valid();
1.68 +}
1.69 +
1.70 +void JfrThreadLocal::set_thread_checkpoint(const JfrCheckpointBlobHandle& ref) {
1.71 + assert(!_thread_cp.valid(), "invariant");
1.72 + _thread_cp = ref;
1.73 +}
1.74 +
1.75 +const JfrCheckpointBlobHandle& JfrThreadLocal::thread_checkpoint() const {
1.76 + return _thread_cp;
1.77 +}
1.78 +
1.79 +void JfrThreadLocal::set_dead() {
1.80 + assert(!is_dead(), "invariant");
1.81 + _dead = true;
1.82 +}
1.83 +
1.84 +void JfrThreadLocal::on_exit(JavaThread* thread) {
1.85 + if (JfrRecorder::is_recording()) {
1.86 + JfrCheckpointManager::write_thread_checkpoint(thread);
1.87 + JfrThreadCPULoadEvent::send_event_for_thread(thread);
1.88 + }
1.89 + thread->jfr_thread_local()->set_dead();
1.90 +}
1.91 +
1.92 +void JfrThreadLocal::on_destruct(Thread* thread) {
1.93 + JfrThreadLocal* const tl = thread->jfr_thread_local();
1.94 + if (tl->has_native_buffer()) {
1.95 + release(tl->native_buffer(), thread);
1.96 + }
1.97 + if (tl->has_java_buffer()) {
1.98 + release(tl->java_buffer(), thread);
1.99 + }
1.100 + assert(tl->shelved_buffer() == NULL, "invariant");
1.101 + if (thread->jfr_thread_local()->has_java_event_writer()) {
1.102 + JfrJavaSupport::destroy_global_jni_handle(tl->java_event_writer());
1.103 + }
1.104 + destroy_stackframes(thread);
1.105 +}
1.106 +
1.107 +JfrBuffer* JfrThreadLocal::acquire(Thread* thread, size_t size) {
1.108 + return JfrStorage::acquire_thread_local(thread, size);
1.109 +}
1.110 +
1.111 +void JfrThreadLocal::release(JfrBuffer* buffer, Thread* thread) {
1.112 + assert(buffer != NULL, "invariant");
1.113 + JfrStorage::release_thread_local(buffer, thread);
1.114 +}
1.115 +
1.116 +JfrBuffer* JfrThreadLocal::install_native_buffer() const {
1.117 + assert(!has_native_buffer(), "invariant");
1.118 + _native_buffer = acquire(Thread::current());
1.119 + return _native_buffer;
1.120 +}
1.121 +
1.122 +JfrBuffer* JfrThreadLocal::install_java_buffer() const {
1.123 + assert(!has_java_buffer(), "invariant");
1.124 + assert(!has_java_event_writer(), "invariant");
1.125 + _java_buffer = acquire(Thread::current());
1.126 + return _java_buffer;
1.127 +}
1.128 +
1.129 +JfrStackFrame* JfrThreadLocal::install_stackframes() const {
1.130 + assert(_stackframes == NULL, "invariant");
1.131 + _stackdepth = (u4)JfrOptionSet::stackdepth();
1.132 + guarantee(_stackdepth > 0, "Stackdepth must be > 0");
1.133 + _stackframes = NEW_C_HEAP_ARRAY(JfrStackFrame, _stackdepth, mtTracing);
1.134 + return _stackframes;
1.135 +}
1.136 +
1.137 +void JfrThreadLocal::destroy_stackframes(Thread* thread) {
1.138 + assert(thread != NULL, "invariant");
1.139 + JfrStackFrame* frames = thread->jfr_thread_local()->stackframes();
1.140 + if (frames != NULL) {
1.141 + FREE_C_HEAP_ARRAY(JfrStackFrame, frames, mtTracing);
1.142 + thread->jfr_thread_local()->set_stackframes(NULL);
1.143 + }
1.144 +}
