| /******************************************************************************* |
| * Copyright (c) 2016 Google, Inc and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Stefan Xenos (Google) - Initial implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.pde.ui.tests.util; |
| |
| import java.lang.management.*; |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.core.runtime.jobs.Job; |
| |
| public class FreezeMonitor { |
| |
| public static final long FROZEN_TEST_TIMEOUT_MS = 60_000; |
| |
| private static /* @Nullable */ Job monitorJob; |
| |
| /** |
| * Will dump JVM threads if test runs over one minute |
| */ |
| public static void expectCompletionInAMinute() { |
| expectCompletionIn(FROZEN_TEST_TIMEOUT_MS); |
| } |
| |
| /** |
| * Will dump JVM threads if test runs over given time |
| */ |
| public static void expectCompletionIn(final long timeout) { |
| done(); |
| monitorJob = new Job("FreezeMonitor") { |
| @Override |
| public IStatus run(IProgressMonitor monitor) { |
| if (monitor.isCanceled()) { |
| return Status.CANCEL_STATUS; |
| } |
| StringBuilder result = new StringBuilder(); |
| result.append("Possible frozen test case\n"); |
| ThreadMXBean threadStuff = ManagementFactory.getThreadMXBean(); |
| ThreadInfo[] allThreads = threadStuff.getThreadInfo(threadStuff.getAllThreadIds(), 200); |
| for (ThreadInfo threadInfo : allThreads) { |
| result.append("\""); |
| result.append(threadInfo.getThreadName()); |
| result.append("\": "); |
| result.append(threadInfo.getThreadState()); |
| result.append("\n"); |
| final StackTraceElement[] elements = threadInfo.getStackTrace(); |
| for (StackTraceElement element : elements) { |
| result.append(" "); |
| result.append(element); |
| result.append("\n"); |
| } |
| result.append("\n"); |
| } |
| System.out.println(result.toString()); |
| return Status.OK_STATUS; |
| } |
| |
| @Override |
| public boolean belongsTo(Object family) { |
| return FreezeMonitor.class == family; |
| } |
| }; |
| monitorJob.schedule(timeout); |
| } |
| |
| public static void done() { |
| if (monitorJob != null) { |
| monitorJob.cancel(); |
| monitorJob = null; |
| } |
| } |
| } |