/*

 * Copyright (c) 2013, 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 org.graalvm.compiler.jtt.threads;

import org.graalvm.compiler.jtt.JTTTest;

import org.graalvm.compiler.jtt.hotspot.NotOnDebug;

import org.junit.Rule;

import org.junit.Test;

import org.junit.rules.TestRule;

import org.junit.rules.Timeout;

/**

 * Inspired by {@code com.sun.media.sound.DirectAudioDevice$DirectDL.drain()}.

 *

 * Two loop exits hold a monitor while merging.

 *

 */

public final class SynchronizedLoopExit01 extends JTTTest {

    @Rule public TestRule timeout = NotOnDebug.create(Timeout.seconds(20));

    protected Object object = new Object();

    protected volatile boolean drained = false;

    protected volatile boolean someBoolean = true;

    public boolean test() {

        boolean b = true;

        while (!drained) {

            synchronized (object) {

                boolean c = b = someBoolean;

                if (c || drained) {

                    break;

                }

            }

        }

        return b;

    }

    @Test

    public void run0() throws Throwable {

        initializeForTimeout();

        runTest("test");

    }

}