1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 /* 24 */ 25 package org.graalvm.compiler.jtt.threads; 26 27 import org.graalvm.compiler.jtt.JTTTest; 28 import org.junit.Test; 29 30 /** 31 * Inspired by {@code com.sun.media.sound.DirectAudioDevice$DirectDL.drain()}. 32 * 33 * Two loop exits hold a monitor while merging. 34 * 35 */ 36 public final class SynchronizedLoopExit01 extends JTTTest { 37 38 protected Object object = new Object(); 39 protected volatile boolean drained = false; 40 protected volatile boolean someBoolean = true; 41 42 public boolean test() { 43 boolean b = true; 44 while (!drained) { 45 synchronized (object) { 46 boolean c = b = someBoolean; 47 if (c || drained) { 48 break; 49 } 50 } 51 } 52 return b; 53 } 54 55 @Test(timeout = 20000) 56 public void run0() throws Throwable { 57 initializeForTimeout(); 58 runTest("test"); 59 } 60 61 }