| /* |
| * Copyright (c) 2003, 2006, 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. |
| */ |
| |
| /* |
| * Utility class for ThreadMXBean tests |
| */ |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.ThreadMXBean; |
| |
| public class Utils { |
| private static final ThreadMXBean tm = ManagementFactory.getThreadMXBean(); |
| private static final int MAX_RETRY = 200; |
| |
| public static boolean waitForBlockWaitingState(Thread t) { |
| // wait for the thread to transition to the expected state |
| int retryCount=0; |
| while (t.getState() == Thread.State.RUNNABLE && retryCount < MAX_RETRY) { |
| goSleep(100); |
| retryCount++; |
| } |
| return (t.getState() != Thread.State.RUNNABLE); |
| } |
| |
| public static boolean waitForThreadState(Thread t, Thread.State expected) { |
| // wait for the thread to transition to the expected state |
| int retryCount=0; |
| while (t.getState() != expected && retryCount < MAX_RETRY) { |
| goSleep(100); |
| retryCount++; |
| } |
| return (t.getState() == expected); |
| } |
| |
| public static void checkThreadState(Thread t, Thread.State expected) { |
| waitForThreadState(t, expected); |
| |
| Thread.State state = tm.getThreadInfo(t.getId()).getThreadState(); |
| if (state == null) { |
| throw new RuntimeException(t.getName() + " expected to have " + |
| expected + " but got null."); |
| } |
| if (state != expected) { |
| t.dumpStack(); |
| throw new RuntimeException(t.getName() + |
| " expected to have " + expected + " but got " + state); |
| } |
| } |
| |
| public static void goSleep(long ms) { |
| try { |
| Thread.sleep(ms); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| System.out.println("TEST FAILED: Unexpected exception."); |
| throw new RuntimeException(e); |
| } |
| } |
| |
| } |