Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/tools/ObjectHistogram.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
author | trims |
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date | Thu, 27 May 2010 19:08:38 -0700 |
parents | a61af66fc99e |
children | 38ea2efa32a7 |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2005, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.tools; | |
26 | |
27 import sun.jvm.hotspot.debugger.*; | |
28 import sun.jvm.hotspot.oops.*; | |
29 import sun.jvm.hotspot.runtime.*; | |
30 import java.io.PrintStream; | |
31 | |
32 /** A sample tool which uses the Serviceability Agent's APIs to obtain | |
33 an object histogram from a remote or crashed VM. */ | |
34 public class ObjectHistogram extends Tool { | |
35 | |
36 public void run() { | |
37 run(System.out, System.err); | |
38 } | |
39 | |
40 public void run(PrintStream out, PrintStream err) { | |
41 // Ready to go with the database... | |
42 ObjectHeap heap = VM.getVM().getObjectHeap(); | |
43 sun.jvm.hotspot.oops.ObjectHistogram histogram = | |
44 new sun.jvm.hotspot.oops.ObjectHistogram(); | |
45 err.println("Iterating over heap. This may take a while..."); | |
46 long startTime = System.currentTimeMillis(); | |
47 heap.iterate(histogram); | |
48 long endTime = System.currentTimeMillis(); | |
49 histogram.printOn(out); | |
50 float secs = (float) (endTime - startTime) / 1000.0f; | |
51 err.println("Heap traversal took " + secs + " seconds."); | |
52 } | |
53 | |
54 public static void main(String[] args) { | |
55 ObjectHistogram oh = new ObjectHistogram(); | |
56 oh.start(args); | |
57 oh.stop(); | |
58 } | |
59 } |