jdk8-mips64-public/hotspot: src/share/vm/jfr/support/jfrThreadLocal.cpp@69fb91513217 (annotated)

src/share/vm/jfr/support/jfrThreadLocal.cpp@69fb91513217 (annotated)

src/share/vm/jfr/support/jfrThreadLocal.cpp

Thu, 15 Nov 2018 11:10:04 +0100

author: mgronlun
date: Thu, 15 Nov 2018 11:10:04 +0100
changeset 9868: 69fb91513217
parent 9858: b985cbb00e68
child 9885: 8e875c964f41
permissions: -rw-r--r--

8210024: JFR calls virtual is_Java_thread from ~Thread()
Reviewed-by: kbarrett, dholmes, dcubed, egahlin

 /*
  * Copyright (c) 2012, 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 "jfr/jfrEvents.hpp"
 #include "jfr/jni/jfrJavaSupport.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/recorder/stacktrace/jfrStackTraceRepository.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_cp(),
   _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),
   _dead(false) {}
 u8 JfrThreadLocal::add_data_lost(u8 value) {
   _data_lost += value;
   return _data_lost;
 }
 bool JfrThreadLocal::has_thread_checkpoint() const {
   return _thread_cp.valid();
 }
 void JfrThreadLocal::set_thread_checkpoint(const JfrCheckpointBlobHandle& ref) {
   assert(!_thread_cp.valid(), "invariant");
   _thread_cp = ref;
 }
 const JfrCheckpointBlobHandle& JfrThreadLocal::thread_checkpoint() const {
   return _thread_cp;
 }
 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");
   if (JfrRecorder::is_recording()) {
     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");
   EventThreadEnd event;
   event.set_thread(id);
   event.commit();
   JfrThreadCPULoadEvent::send_event_for_thread(jt);
 }
 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");
   if (tl->has_native_buffer()) {
     JfrStorage::release_thread_local(tl->native_buffer(), t);
   }
   if (tl->has_java_buffer()) {
     JfrStorage::release_thread_local(tl->java_buffer(), t);
   }
   if (tl->has_java_event_writer()) {
     assert(t->is_Java_thread(), "invariant");
     JfrJavaSupport::destroy_global_jni_handle(tl->java_event_writer());
   }
   if (tl->_stackframes != NULL) {
     FREE_C_HEAP_ARRAY(JfrStackFrame, tl->_stackframes, mtTracing);
   }
   tl->_dead = true;
 }
 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()) {
       send_java_thread_end_events(tl->thread_id(), (JavaThread*)t);
     }
   }
   release(tl, Thread::current()); // because it could be that Thread::current() != t
 }
 JfrBuffer* JfrThreadLocal::install_native_buffer() const {
   assert(!has_native_buffer(), "invariant");
   _native_buffer = JfrStorage::acquire_thread_local(Thread::current());
   return _native_buffer;
 }
 JfrBuffer* JfrThreadLocal::install_java_buffer() const {
   assert(!has_java_buffer(), "invariant");
   assert(!has_java_event_writer(), "invariant");
   _java_buffer = JfrStorage::acquire_thread_local(Thread::current());
   return _java_buffer;
 }
 JfrStackFrame* JfrThreadLocal::install_stackframes() const {
   assert(_stackframes == NULL, "invariant");
   _stackdepth = (u4)JfrOptionSet::stackdepth();
   guarantee(_stackdepth > 0, "Stackdepth must be > 0");
   _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));
 }

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src/share/vm/jfr/support/jfrThreadLocal.cpp@69fb91513217 (annotated)

src/share/vm/jfr/support/jfrThreadLocal.cpp