001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.util;
016    
017    import java.io.IOException;
018    
019    /**
020     * @author Shuyang Zhou
021     */
022    public class HeapUtil {
023    
024            public static void heapDump(boolean live, boolean binary, String file) {
025                    int processId = ProcessUtil.getProcessId();
026    
027                    StringBundler sb = new StringBundler(7);
028    
029                    sb.append("jmap -dump:");
030    
031                    if (live) {
032                            sb.append("live,");
033                    }
034    
035                    if (binary) {
036                            sb.append("format=b,");
037                    }
038    
039                    sb.append("file=");
040                    sb.append(file);
041                    sb.append(StringPool.SPACE);
042                    sb.append(processId);
043    
044                    try {
045                            Runtime runtime = Runtime.getRuntime();
046    
047                            runtime.exec(sb.toString());
048                    }
049                    catch (IOException ioe) {
050                            throw new RuntimeException("Unable to perform heap dump", ioe);
051                    }
052            }
053    
054    }