jdk8-mips64-public/hotspot: src/share/vm/jfr/support/jfrFlush.cpp@a248d0be1309 (annotated)

src/share/vm/jfr/support/jfrFlush.cpp@a248d0be1309 (annotated)

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

Mon, 19 Aug 2019 10:11:31 +0200

author: neugens
date: Mon, 19 Aug 2019 10:11:31 +0200
changeset 9861: a248d0be1309
parent 9858: b985cbb00e68
child 9882: 3dd83d893bfc
permissions: -rw-r--r--

8229401: Fix JFR code cache test failures
8223689: Add JFR Thread Sampling Support
8223690: Add JFR BiasedLock Event Support
8223691: Add JFR G1 Region Type Change Event Support
8223692: Add JFR G1 Heap Summary Event Support
Summary: Backport JFR from JDK11, additional fixes
Reviewed-by: neugens, apetushkov
Contributed-by: denghui.ddh@alibaba-inc.com

 /*
  * Copyright (c) 2016, 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/recorder/jfrEventSetting.inline.hpp"
 #include "jfr/recorder/storage/jfrStorage.hpp"
 #include "jfr/recorder/stacktrace/jfrStackTraceRepository.hpp"
 #include "jfr/support/jfrFlush.hpp"
 #include "jfr/support/jfrThreadLocal.hpp"
 #include "runtime/thread.inline.hpp"
 #include "utilities/debug.hpp"
 JfrFlush::JfrFlush(JfrStorage::Buffer* old, size_t used, size_t requested, Thread* t) :
   _result(JfrStorage::flush(old, used, requested, true, t)) {
 }
 template <typename T>
 class LessThanHalfBufferSize : AllStatic {
 public:
   static bool evaluate(T* t) {
     assert(t != NULL, "invariant");
     return t->free_size() < t->size() / 2;
   }
 };
 template <typename T>
 class LessThanSize : AllStatic {
  public:
   static bool evaluate(T* t, size_t size) {
     assert(t != NULL, "invariant");
     return t->free_size() < size;
   }
 };
 bool jfr_is_event_enabled(JfrEventId id) {
   return JfrEventSetting::is_enabled(id);
 }
 bool jfr_has_stacktrace_enabled(JfrEventId id) {
   return JfrEventSetting::has_stacktrace(id);
 }
 void jfr_conditional_flush(JfrEventId id, size_t size, Thread* t) {
   assert(jfr_is_event_enabled(id), "invariant");
   if (t->jfr_thread_local()->has_native_buffer()) {
     JfrStorage::Buffer* const buffer = t->jfr_thread_local()->native_buffer();
     if (LessThanSize<JfrStorage::Buffer>::evaluate(buffer, size)) {
       JfrFlush f(buffer, 0, 0, t);
     }
   }
 }
 bool jfr_save_stacktrace(Thread* t) {
   JfrThreadLocal* const tl = t->jfr_thread_local();
   if (tl->has_cached_stack_trace()) {
     return false; // no ownership
   }
   tl->set_cached_stack_trace_id(JfrStackTraceRepository::record(t));
   return true;
 }
 void jfr_clear_stacktrace(Thread* t) {
   t->jfr_thread_local()->clear_cached_stack_trace();
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/jfr/support/jfrFlush.cpp@a248d0be1309 (annotated)

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