| /* |
| * 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; |
| } |