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8180802: move jdk.testlibrary.management.ThreadMXBeanTool to top level testlibrary

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Reviewed-by: psandoz
This commit is contained in:
Igor Ignatyev 2017-05-24 13:53:44 -07:00
parent 42d34a7cbf
commit 6823a2068e
1 changed files with 71 additions and 0 deletions
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71
test/lib/jdk/test/lib/management/ThreadMXBeanTool.java Normal file
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/*
* Copyright (c) 2015, 2017, 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.test.lib.management;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
/**
* A few utility methods to use ThreadMXBean.
*/
public final class ThreadMXBeanTool {
/**
* Waits until {@link Thread} is in the certain {@link Thread.State}
* and blocking on {@code object}.
*
* @param state The thread state
* @param object The object to block on
*/
public static void waitUntilBlockingOnObject(Thread thread, Thread.State state, Object object)
throws InterruptedException {
String want = object == null ? null : object.getClass().getName() + '@'
+ Integer.toHexString(System.identityHashCode(object));
ThreadMXBean tmx = ManagementFactory.getThreadMXBean();
while (thread.isAlive()) {
ThreadInfo ti = tmx.getThreadInfo(thread.getId());
if (ti.getThreadState() == state
&& (want == null || want.equals(ti.getLockName()))) {
return;
}
Thread.sleep(1);
}
}
/**
* Waits until {@link Thread} is in native.
*/
public static void waitUntilInNative(Thread thread) throws InterruptedException {
ThreadMXBean tmx = ManagementFactory.getThreadMXBean();
while (thread.isAlive()) {
ThreadInfo ti = tmx.getThreadInfo(thread.getId());
if (ti.isInNative()) {
return;
}
Thread.sleep(1);
}
}
}