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/*
* Copyright (c) 2011, 2018, 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 nsk.monitoring.ThreadMXBean.GetThreadAllocatedBytes;
import nsk.share.*;
import nsk.monitoring.share.*;
import nsk.monitoring.ThreadMXBean.ThreadMXBeanTestBase;
import nsk.monitoring.ThreadMXBean.MXBeanTestThread;
import nsk.monitoring.ThreadMXBean.BarrierHandler;
/**
* Tests getThreadAllocatedBytes(long id) function of com.sun.management.ThreadMXBean
* <p>
* - Check that result of getThreadAllocatedBytes(long id) call for similar
* threads are approximately equals.
*/
public class EqualThreadsTest extends ThreadMXBeanTestBase {
/**
* Actually runs the test
*/
public void run() {
if (threadMXBean == null)
return;
MXBeanTestThread.warmUp(garbageProducerId);
MXBeanTestThread tr1 = new MXBeanTestThread(garbageProducerId);
MXBeanTestThread tr2 = new MXBeanTestThread(garbageProducerId);
BarrierHandler handler = startThreads(tr1, tr2);
try {
long startBytesTr1 = threadMXBean.getThreadAllocatedBytes(tr1.getId());
long startBytesTr2 = threadMXBean.getThreadAllocatedBytes(tr2.getId());
handler.proceed();
long value1 = threadMXBean.getThreadAllocatedBytes(tr1.getId())
- startBytesTr1;
long value2 = threadMXBean.getThreadAllocatedBytes(tr2.getId())
- startBytesTr2;
// Expect value1 and value2 differs not more then for 10%
if ( Math.abs(value1 - value2) > value1*DELTA_PERCENT/100)
throw new TestFailure("Failure! Let f(thread) = getThreadAllocatedBytes()."
+ " Expected if thread tr1 is similar to thread tr2"
+ " then f(tr1) and f(tr2) differs not more then for "
+ DELTA_PERCENT + " %. Recieved: f(tr1)=" + value1
+ " f(tr2)=" + value2);
log.info("EqualThreadsTest passed.");
} finally {
handler.finish();
}
}
/**
* Entry point for java program
* @param args sets the test configuration
*/
public static void main(String[] args) {
ThreadMXBeanTestBase test = new EqualThreadsTest();
Monitoring.runTest(test, test.setGarbageProducer(args));
}
}
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