com.liferay.portal.kernel.util.HeapUtil Maven / Gradle / Ivy
/**
* Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License for more
* details.
*/
package com.liferay.portal.kernel.util;
import com.liferay.portal.kernel.process.ProcessUtil;
import java.lang.management.ManagementFactory;
import java.lang.management.RuntimeMXBean;
import java.util.ArrayList;
import java.util.List;
/**
* @author Shuyang Zhou
*/
public class HeapUtil {
public static void heapDump(boolean live, boolean binary, String file) {
int processId = _getProcessId();
StringBundler sb = new StringBundler(5);
sb.append("-dump:");
if (live) {
sb.append("live,");
}
if (binary) {
sb.append("format=b,");
}
sb.append("file=");
sb.append(file);
List arguments = new ArrayList();
arguments.add("jmap");
arguments.add(sb.toString());
arguments.add(String.valueOf(processId));
try {
ProcessUtil.execute(
ProcessUtil.LOGGING_OUTPUT_PROCESSOR, arguments);
}
catch (Exception e) {
throw new RuntimeException("Unable to perform heap dump", e);
}
}
private static int _getProcessId() {
RuntimeMXBean runtimeMXBean = ManagementFactory.getRuntimeMXBean();
String name = runtimeMXBean.getName();
int index = name.indexOf(CharPool.AT);
if (index == -1) {
throw new RuntimeException("Unable to parse process name " + name);
}
int pid = GetterUtil.getInteger(name.substring(0, index));
if (pid == 0) {
throw new RuntimeException("Unable to parse process name " + name);
}
return pid;
}
}