Mercurial > hg > graal-compiler
view src/share/vm/runtime/jniPeriodicChecker.cpp @ 10405:f2110083203d
8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author | sla |
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date | Mon, 10 Jun 2013 11:30:51 +0200 |
parents | f95d63e2154a |
children |
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/* * Copyright (c) 2007, 2010, 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 "memory/allocation.inline.hpp" #include "runtime/jniPeriodicChecker.hpp" #include "runtime/task.hpp" // -------------------------------------------------------- // Class to aid in periodic checking under CheckJNICalls class JniPeriodicCheckerTask : public PeriodicTask { public: JniPeriodicCheckerTask(int interval_time) : PeriodicTask(interval_time) {} void task() { os::run_periodic_checks(); } static void engage(); static void disengage(); }; //---------------------------------------------------------- // Implementation of JniPeriodicChecker JniPeriodicCheckerTask* JniPeriodicChecker::_task = NULL; /* * The engage() method is called at initialization time via * Thread::create_vm() to initialize the JniPeriodicChecker and * register it with the WatcherThread as a periodic task. */ void JniPeriodicChecker::engage() { if (CheckJNICalls && !is_active()) { // start up the periodic task _task = new JniPeriodicCheckerTask(10); _task->enroll(); } } /* * the disengage() method is responsible for deactivating the periodic * task. This method is called from before_exit() in java.cpp and is only called * after the WatcherThread has been stopped. */ void JniPeriodicChecker::disengage() { if (CheckJNICalls && is_active()) { // remove JniPeriodicChecker _task->disenroll(); delete _task; _task = NULL; } } void jniPeriodicChecker_exit() { if (!CheckJNICalls) return; }