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comparison agent/src/share/classes/sun/jvm/hotspot/tools/HeapDumper.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 2005 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.tools;
26
27 import sun.jvm.hotspot.utilities.HeapHprofBinWriter;
28 import java.io.IOException;
29
30 /*
31 * This tool is used by the JDK jmap utility to dump the heap of the target
32 * process/core as a HPROF binary file. It can also be used as a standalone
33 * tool if required.
34 */
35 public class HeapDumper extends Tool {
36
37 private static String DEFAULT_DUMP_FILE = "heap.bin";
38
39 private String dumpFile;
40
41 public HeapDumper(String dumpFile) {
42 this.dumpFile = dumpFile;
43 }
44
45 protected void printFlagsUsage() {
46 System.out.println(" <no option>\tto dump heap to " +
47 DEFAULT_DUMP_FILE);
48 System.out.println(" -f <file>\tto dump heap to <file>");
49 super.printFlagsUsage();
50 }
51
52 // use HeapHprofBinWriter to write the heap dump
53 public void run() {
54 System.out.println("Dumping heap to " + dumpFile + " ...");
55 try {
56 new HeapHprofBinWriter().write(dumpFile);
57 System.out.println("Heap dump file created");
58 } catch (IOException ioe) {
59 System.err.println(ioe.getMessage());
60 }
61 }
62
63 // JDK jmap utility will always invoke this tool as:
64 // HeapDumper -f <file> <args...>
65 public static void main(String args[]) {
66 String file = DEFAULT_DUMP_FILE;
67 if (args.length > 2) {
68 if (args[0].equals("-f")) {
69 file = args[1];
70 String[] newargs = new String[args.length-2];
71 System.arraycopy(args, 2, newargs, 0, args.length-2);
72 args = newargs;
73 }
74 }
75
76 HeapDumper dumper = new HeapDumper(file);
77 dumper.start(args);
78 dumper.stop();
79 }
80
81 }