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

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2004 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 java.io.*;
28 import sun.jvm.hotspot.runtime.*;
29
30 public class JSnap extends Tool {
31 public void run() {
32 final PrintStream out = System.out;
33 if (PerfMemory.initialized()) {
34 PerfDataPrologue prologue = PerfMemory.prologue();
35 if (prologue.accessible()) {
36 PerfMemory.iterate(new PerfMemory.PerfDataEntryVisitor() {
37 public boolean visit(PerfDataEntry pde) {
38 if (pde.supported()) {
39 out.print(pde.name());
40 out.print('=');
41 out.println(pde.valueAsString());
42 }
43 // goto next entry
44 return true;
45 }
46 });
47 } else {
48 out.println("PerfMemory is not accessible");
49 }
50 } else {
51 out.println("PerfMemory is not initialized");
52 }
53 }
54
55 public static void main(String[] args) {
56 JSnap js = new JSnap();
57 js.start(args);
58 js.stop();
59 }
60 }