1 /* 2 * Copyright (c) 2013, 2018, 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 26 27 package org.graalvm.compiler.jtt.threads; 28 29 import org.graalvm.compiler.jtt.JTTTest; 30 import org.junit.Rule; 31 import org.junit.Test; 32 import org.junit.rules.TestRule; 33 34 /** 35 * Inspired by {@code com.sun.media.sound.DirectAudioDevice$DirectDL.drain()}. 36 * 37 * Two loop exits hold a monitor while merging. 38 * 39 */ 40 public final class SynchronizedLoopExit01 extends JTTTest { 41 42 @Rule public TestRule timeout = createTimeoutSeconds(20); 43 44 protected Object object = new Object(); 45 protected volatile boolean drained = false; 46 protected volatile boolean someBoolean = true; 47 protected volatile int someInt = 3; 48 49 public boolean test() { 50 boolean b = true; 51 while (!drained) { 52 synchronized (object) { 53 boolean c = b = someBoolean; 54 if (c || drained) { 55 break; 56 } 57 } 58 } 59 return b; 60 } 61 62 @Test 63 public void run0() throws Throwable { 64 runTest("test"); 65 } 66 67 public synchronized boolean test1() { 68 boolean b = true; 69 while (!drained) { 70 synchronized (object) { 71 boolean c = b = someBoolean; 72 if (c || drained) { 73 break; 74 } 75 } 76 } 77 return b; 78 } 79 80 @Test 81 public void run1() throws Throwable { 82 runTest("test1"); 83 } 84 85 public synchronized boolean test2() { 86 boolean b = true; 87 while (!drained) { 88 synchronized (object) { 89 boolean c = b = someBoolean; 90 if (c || drained) { 91 break; 92 } 93 if (someInt > 0) { 94 throw new RuntimeException(); 95 } 96 } 97 if (someInt < -10) { 98 throw new IndexOutOfBoundsException(); 99 } 100 } 101 if (someInt < -5) { 102 throw new IllegalArgumentException(); 103 } 104 return b; 105 } 106 107 @Test 108 public void run2() throws Throwable { 109 runTest("test2"); 110 } 111 112 }