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 package jdk.testlibrary; 25 26 import static jdk.testlibrary.Asserts.assertNotEquals; 27 import static jdk.testlibrary.Asserts.assertTrue; 28 29 import java.util.List; 30 import java.util.concurrent.CountDownLatch; 31 32 /** 33 * The helper class for starting and stopping {@link Process} in a separate thread. 34 */ 35 public class ProcessThread extends TestThread { 36 37 /** 38 * Creates a new {@code ProcessThread} object. 39 * 40 * @param cmd The list of program and its arguments to pass to {@link ProcessBuilder} 41 */ 42 public ProcessThread(List<String> cmd) { 43 super(new ProcessRunnable(cmd)); 44 } 45 46 /** 47 * Creates a new {@code ProcessThread} object. 48 * 49 * @param cmd The string array of program and its arguments to pass to {@link ProcessBuilder} 50 */ 51 public ProcessThread(String... cmd) { 52 super(new ProcessRunnable(cmd)); 53 } 54 55 /** 56 * Creates a new {@code ProcessThread} object. 57 * 58 * @param threadName The name of thread 59 * @param cmd The list of program and its arguments to pass to {@link ProcessBuilder} 60 */ 61 public ProcessThread(String threadName, List<String> cmd) { 62 super(new ProcessRunnable(cmd), threadName); 63 } 64 65 /** 66 * Creates a new {@code ProcessThread} object. 67 * 68 * @param threadName The name of thread 69 * @param cmd The string array of program and its arguments to pass to {@link ProcessBuilder} 70 */ 71 public ProcessThread(String threadName, String... cmd) { 72 super(new ProcessRunnable(cmd), threadName); 73 } 74 75 /** 76 * Stops {@link Process} started by {@code ProcessRunnable}. 77 * 78 * @throws InterruptedException 79 */ 80 public void stopProcess() throws InterruptedException { 81 ((ProcessRunnable) getRunnable()).stopProcess(); 82 } 83 84 /** 85 * {@link Runnable} interface for starting and stopping {@link Process}. 86 */ 87 static class ProcessRunnable extends XRun { 88 89 private final ProcessBuilder processBuilder; 90 private final CountDownLatch latch; 91 private volatile Process process; 92 93 /** 94 * Creates a new {@code ProcessRunnable} object. 95 * 96 * @param cmd The list of program and its arguments to to pass to {@link ProcessBuilder} 97 */ 98 public ProcessRunnable(List<String> cmd) { 99 super(); 100 this.processBuilder = new ProcessBuilder(cmd); 101 this.latch = new CountDownLatch(1); 102 } 103 104 /** 105 * Creates a new {@code ProcessRunnable} object. 106 * 107 * @param cmd The string array of program and its arguments to to pass to {@link ProcessBuilder} 108 */ 109 public ProcessRunnable(String... cmd) { 110 super(); 111 this.processBuilder = new ProcessBuilder(cmd); 112 this.latch = new CountDownLatch(1); 113 } 114 115 /** 116 * Starts the process in {@code ProcessThread}. 117 * All exceptions which occurs here will be caught and stored in {@code ProcessThread}. 118 * 119 * see {@link XRun} 120 */ 121 @Override 122 public void xrun() throws Throwable { 123 this.process = processBuilder.start(); 124 // Release when process is started 125 latch.countDown(); 126 127 // Will block... 128 OutputAnalyzer output = new OutputAnalyzer(this.process); 129 130 assertTrue(output.getOutput().isEmpty(), "Should get an empty output, got: " 131 + Utils.NEW_LINE + output.getOutput()); 132 assertNotEquals(output.getExitValue(), 0, 133 "Process exited with unexpected exit code"); 134 } 135 136 /** 137 * Stops the process. 138 * 139 * @throws InterruptedException 140 */ 141 public void stopProcess() throws InterruptedException { 142 // Wait until process is started 143 latch.await(); 144 if (this.process != null) { 145 this.process.destroy(); 146 } 147 } 148 149 } 150 151 }