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1 /*
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2 * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.tools;
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26
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27 import java.io.*;
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28 import sun.jvm.hotspot.runtime.*;
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29
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30 public class JSnap extends Tool {
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31 public void run() {
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32 final PrintStream out = System.out;
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33 if (PerfMemory.initialized()) {
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34 PerfDataPrologue prologue = PerfMemory.prologue();
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35 if (prologue.accessible()) {
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36 PerfMemory.iterate(new PerfMemory.PerfDataEntryVisitor() {
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37 public boolean visit(PerfDataEntry pde) {
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38 if (pde.supported()) {
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39 out.print(pde.name());
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40 out.print('=');
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41 out.println(pde.valueAsString());
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42 }
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43 // goto next entry
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44 return true;
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45 }
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46 });
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47 } else {
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48 out.println("PerfMemory is not accessible");
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49 }
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50 } else {
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51 out.println("PerfMemory is not initialized");
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52 }
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53 }
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54
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55 public static void main(String[] args) {
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56 JSnap js = new JSnap();
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57 js.start(args);
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58 js.stop();
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59 }
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60 }
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