/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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package com.sun.tools.visualvm.sampler.memory;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.ReflectionException;
/**
*
* @author Tomas Hurka
*/
public class ThreadsMemory {
private static final ObjectName THREAD_NAME = getThreadName();
private final ThreadMXBean threadBean;
private final MBeanServerConnection connection;
public ThreadsMemory(ThreadMXBean bean, MBeanServerConnection conn) {
threadBean = bean;
connection = conn;
}
public ThreadsMemoryInfo getThreadsMemoryInfo() throws MBeanException, ReflectionException, IOException, InstanceNotFoundException {
long[] ids = threadBean.getAllThreadIds();
ThreadInfo[] tids = threadBean.getThreadInfo(ids);
Object[] args = new Object[] {ids};
String[] sigs = new String[] {"[J"}; // NOI18N
long[] memInfo = (long[])connection.invoke(THREAD_NAME, "getThreadAllocatedBytes", args, sigs); // NOI18N
long time = System.currentTimeMillis();
return new ThreadsMemoryInfo(time,tids,memInfo);
}
private static ObjectName getThreadName() {
try {
return new ObjectName(ManagementFactory.THREAD_MXBEAN_NAME);
} catch (MalformedObjectNameException ex) {
throw new RuntimeException(ex);
}
}
}