/*
* (C) Copyright 2011-2016 Nuxeo SA (http://nuxeo.com/) and others.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Contributors:
* matic
*/
package org.nuxeo.runtime.management.jvm;
import java.io.File;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import javax.management.MBeanServer;
import org.nuxeo.runtime.api.Framework;
import com.sun.management.HotSpotDiagnosticMXBean;
/**
* Helper to dump the heap in a temporary file.
*
* @author matic
* @since 5.5
*/
public class HeapDumper {
private static final String HOTSPOT_NAME = "com.sun.management:type=HotSpotDiagnostic";
public HeapDumper() throws IOException {
}
protected final HotSpotDiagnosticMXBean diag = newDiag();
protected HotSpotDiagnosticMXBean newDiag() throws IOException {
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
return ManagementFactory.newPlatformMXBeanProxy(mbs, HOTSPOT_NAME, HotSpotDiagnosticMXBean.class);
}
/**
* Dumps heap in a temporary file and returns the file
*
* @since 5.5
* @throws IOException
*/
public File dumpHeap() throws IOException {
File file = Framework.createTempFile("heapdump", ".hprof");
file.delete();
newDiag().dumpHeap(file.getAbsolutePath(), true);
return file;
}
}