/*

 * Copyright (c) 2007, 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.

 */

package nsk.monitoring.share.thread;

import nsk.share.log.Log;

import java.lang.management.ThreadInfo;

import java.lang.management.MonitorInfo;

import java.lang.management.LockInfo;

/**

 * SleepingThread is RecursiveMonitoringThread that sleeps.

 */

public class SleepingThread extends RecursiveMonitoringThread {

        private String lock = new String("a lock");

        private volatile boolean sleeping = false;

        private Object readyLock = new Object();

        private static final String[] expectedMethods = {

                "java.lang.Thread.sleep",

                "nsk.monitoring.share.thread.SleepingThread.runInside"

        };

        public SleepingThread(Log log, RunType recursionType, int maxDepth) {

                super(log, recursionType, maxDepth);

        }

        public void checkThreadInfo(ThreadInfo info) {

                super.checkThreadInfo(info);

                verify(info.getThreadState() == Thread.State.TIMED_WAITING, "ThreadInfo.getThreadState() = " + info.getThreadState() + " != " + Thread.State.TIMED_WAITING);

                verify(info.getBlockedTime() == 0 || info.getBlockedTime() == -1, "ThreadInfo.getBlockedTime() == " + info.getBlockedTime());

                verify(info.getBlockedCount() >= 0, "ThreadInfo.getBlockedCount() = " + info.getBlockedCount() + " != 0");

                verify(info.getWaitedTime() == 0 || info.getWaitedTime() == -1, "ThreadInfo.getWaitedTime() == " + info.getWaitedTime());

                verify(info.getWaitedCount() == 1, "ThreadInfo.getWaitedCount() = " + info.getWaitedCount() + " != 1");

                verify(info.getLockInfo() == null, "ThreadInfo.getLockInfo() != null ");

                verify(info.getLockName() == null, "ThreadInfo.getLockName() " + info.getLockName() + " != null");

                verify(info.getLockOwnerId() == -1, "ThreadInfo.getLockOwnerId() = " + info.getLockOwnerId() + " != null");

                verify(info.getLockOwnerName() == null, "ThreadInfo.getLockOwnerName() = " + info.getLockOwnerName() + " != null");

                checkMonitorInfo(info.getLockedMonitors(), null);

                checkSynchronizers(info.getLockedSynchronizers(), null);

        }

        public void waitState() {

                synchronized (readyLock) {

                        while (!sleeping) {

                                try {

                                        readyLock.wait();

                                } catch (InterruptedException e) {

                                        log.warn(e);

                                }

                        }

                }

                waitThreadState(Thread.State.TIMED_WAITING);

        }

        public void finish() {

                sleeping = false;

                runner.interrupt();

        }

        protected void runInside() {

                synchronized (readyLock) {

                        sleeping = true;

                        readyLock.notifyAll();

                }

                while (sleeping) {

                        try {

                                Thread.sleep(10000000);

                        } catch (InterruptedException e) {

                        }

                }

        }

        protected boolean isStackTraceElementExpected(StackTraceElement element) {

                return super.isStackTraceElementExpected(element) || checkStackTraceElement(element, expectedMethods);

        }

}