jniPeriodicChecker.cpp revision 0
0N/A/*
0N/A * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
0N/A * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
0N/A * CA 95054 USA or visit www.sun.com if you need additional information or
0N/A * have any questions.
0N/A *
0N/A */
0N/A
0N/A# include "incls/_precompiled.incl"
0N/A# include "incls/_jniPeriodicChecker.cpp.incl"
0N/A
0N/A
0N/A// --------------------------------------------------------
0N/A// Class to aid in periodic checking under CheckJNICalls
0N/Aclass JniPeriodicCheckerTask : public PeriodicTask {
0N/A public:
0N/A JniPeriodicCheckerTask(int interval_time) : PeriodicTask(interval_time) {}
0N/A void task() { os::run_periodic_checks(); }
0N/A static void engage();
0N/A static void disengage();
0N/A};
0N/A
0N/A
0N/A//----------------------------------------------------------
0N/A// Implementation of JniPeriodicChecker
0N/A
0N/AJniPeriodicCheckerTask* JniPeriodicChecker::_task = NULL;
0N/A
0N/A/*
0N/A * The engage() method is called at initialization time via
0N/A * Thread::create_vm() to initialize the JniPeriodicChecker and
0N/A * register it with the WatcherThread as a periodic task.
0N/A */
0N/Avoid JniPeriodicChecker::engage() {
0N/A if (CheckJNICalls && !is_active()) {
0N/A // start up the periodic task
0N/A _task = new JniPeriodicCheckerTask(10);
0N/A _task->enroll();
0N/A }
0N/A}
0N/A
0N/A
0N/A/*
0N/A * the disengage() method is responsible for deactivating the periodic
0N/A * task. This method is called from before_exit() in java.cpp and is only called
0N/A * after the WatcherThread has been stopped.
0N/A */
0N/Avoid JniPeriodicChecker::disengage() {
0N/A if (CheckJNICalls && is_active()) {
0N/A // remove JniPeriodicChecker
0N/A _task->disenroll();
0N/A delete _task;
0N/A _task = NULL;
0N/A }
0N/A}
0N/A
0N/Avoid jniPeriodicChecker_exit() {
0N/A if (!CheckJNICalls) return;
0N/A}