Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/tools/ObjectHistogram.java @ 17467:55fb97c4c58d hs25-b65
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
| author | mikael |
|---|---|
| date | Tue, 24 Dec 2013 11:48:39 -0800 |
| parents | 7fe6ef09d242 |
| children | 4ca6dc0799b6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2002, 2013, 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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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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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 | |
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36 public ObjectHistogram() { |
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37 super(); |
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38 } |
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39 |
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40 public ObjectHistogram(JVMDebugger d) { |
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41 super(d); |
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42 } |
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43 |
| 0 | 44 public void run() { |
| 45 run(System.out, System.err); | |
| 46 } | |
| 47 | |
| 48 public void run(PrintStream out, PrintStream err) { | |
| 49 // Ready to go with the database... | |
| 50 ObjectHeap heap = VM.getVM().getObjectHeap(); | |
| 51 sun.jvm.hotspot.oops.ObjectHistogram histogram = | |
| 52 new sun.jvm.hotspot.oops.ObjectHistogram(); | |
| 53 err.println("Iterating over heap. This may take a while..."); | |
| 54 long startTime = System.currentTimeMillis(); | |
| 55 heap.iterate(histogram); | |
| 56 long endTime = System.currentTimeMillis(); | |
| 57 histogram.printOn(out); | |
| 58 float secs = (float) (endTime - startTime) / 1000.0f; | |
| 59 err.println("Heap traversal took " + secs + " seconds."); | |
| 60 } | |
| 61 | |
| 62 public static void main(String[] args) { | |
| 63 ObjectHistogram oh = new ObjectHistogram(); | |
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64 oh.execute(args); |
| 0 | 65 } |
| 66 } |