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/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
package sun.jvm.hotspot.tools;
import sun.jvm.hotspot.utilities.HeapHprofBinWriter;
import sun.jvm.hotspot.debugger.JVMDebugger;
import java.io.IOException;
/*
* This tool is used by the JDK jmap utility to dump the heap of the target
* process/core as a HPROF binary file. It can also be used as a standalone
* tool if required.
*/
public class HeapDumper extends Tool {
private static String DEFAULT_DUMP_FILE = "heap.bin";
private String dumpFile;
public HeapDumper(String dumpFile) {
this.dumpFile = dumpFile;
}
public HeapDumper(String dumpFile, JVMDebugger d) {
super(d);
this.dumpFile = dumpFile;
}
protected void printFlagsUsage() {
System.out.println(" <no option>\tto dump heap to " +
DEFAULT_DUMP_FILE);
System.out.println(" -f <file>\tto dump heap to <file>");
super.printFlagsUsage();
}
// use HeapHprofBinWriter to write the heap dump
public void run() {
System.out.println("Dumping heap to " + dumpFile + " ...");
try {
new HeapHprofBinWriter().write(dumpFile);
System.out.println("Heap dump file created");
} catch (IOException ioe) {
System.err.println(ioe.getMessage());
}
}
// JDK jmap utility will always invoke this tool as:
// HeapDumper -f <file> <args...>
public static void main(String args[]) {
String file = DEFAULT_DUMP_FILE;
if (args.length > 2) {
if (args[0].equals("-f")) {
file = args[1];
String[] newargs = new String[args.length-2];
System.arraycopy(args, 2, newargs, 0, args.length-2);
args = newargs;
}
}
HeapDumper dumper = new HeapDumper(file);
dumper.execute(args);
}
}
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