Mercurial > hg > openjdk > lambda > jdk
view test/lib/testlibrary/jdk/testlibrary/ProcessThread.java @ 10532:b04b124418d8
8022229: Intermittent test failures in sun/tools/jstatd
Reviewed-by: sla, egahlin, jbachorik, allwin
author | ykantser |
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date | Wed, 30 Oct 2013 13:44:40 +0100 |
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/* * 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 jdk.testlibrary; import static jdk.testlibrary.Asserts.assertNotEquals; import static jdk.testlibrary.Asserts.assertTrue; import java.util.List; import java.util.concurrent.CountDownLatch; /** * The helper class for starting and stopping {@link Process} in a separate thread. */ public class ProcessThread extends TestThread { /** * Creates a new {@code ProcessThread} object. * * @param cmd The list of program and its arguments to pass to {@link ProcessBuilder} */ public ProcessThread(List<String> cmd) { super(new ProcessRunnable(cmd)); } /** * Creates a new {@code ProcessThread} object. * * @param cmd The string array of program and its arguments to pass to {@link ProcessBuilder} */ public ProcessThread(String... cmd) { super(new ProcessRunnable(cmd)); } /** * Creates a new {@code ProcessThread} object. * * @param threadName The name of thread * @param cmd The list of program and its arguments to pass to {@link ProcessBuilder} */ public ProcessThread(String threadName, List<String> cmd) { super(new ProcessRunnable(cmd), threadName); } /** * Creates a new {@code ProcessThread} object. * * @param threadName The name of thread * @param cmd The string array of program and its arguments to pass to {@link ProcessBuilder} */ public ProcessThread(String threadName, String... cmd) { super(new ProcessRunnable(cmd), threadName); } /** * Stops {@link Process} started by {@code ProcessRunnable}. * * @throws InterruptedException */ public void stopProcess() throws InterruptedException { ((ProcessRunnable) getRunnable()).stopProcess(); } /** * {@link Runnable} interface for starting and stopping {@link Process}. */ static class ProcessRunnable extends XRun { private final ProcessBuilder processBuilder; private final CountDownLatch latch; private volatile Process process; /** * Creates a new {@code ProcessRunnable} object. * * @param cmd The list of program and its arguments to to pass to {@link ProcessBuilder} */ public ProcessRunnable(List<String> cmd) { super(); this.processBuilder = new ProcessBuilder(cmd); this.latch = new CountDownLatch(1); } /** * Creates a new {@code ProcessRunnable} object. * * @param cmd The string array of program and its arguments to to pass to {@link ProcessBuilder} */ public ProcessRunnable(String... cmd) { super(); this.processBuilder = new ProcessBuilder(cmd); this.latch = new CountDownLatch(1); } /** * Starts the process in {@code ProcessThread}. * All exceptions which occurs here will be caught and stored in {@code ProcessThread}. * * see {@link XRun} */ @Override public void xrun() throws Throwable { this.process = processBuilder.start(); // Release when process is started latch.countDown(); // Will block... OutputAnalyzer output = new OutputAnalyzer(this.process); assertTrue(output.getOutput().isEmpty(), "Should get an empty output, got: " + Utils.NEW_LINE + output.getOutput()); assertNotEquals(output.getExitValue(), 0, "Process exited with unexpected exit code"); } /** * Stops the process. * * @throws InterruptedException */ public void stopProcess() throws InterruptedException { // Wait until process is started latch.await(); if (this.process != null) { this.process.destroy(); } } } }