/* * Copyright (c) 1997, 2008, 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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. *//* * The Original Code is HAT. The Initial Developer of the * Original Code is Bill Foote, with contributions from others * at JavaSoft/Sun. */package com.sun.tools.hat.internal.parser;import java.io.*;import com.sun.tools.hat.internal.model.*;/** * Abstract base class for reading object dump files. A reader need not be * thread-safe. * * @author Bill Foote */public abstract class Reader { protected PositionDataInputStream in; protected Reader(PositionDataInputStream in) { this.in = in; } /** * Read a snapshot from a data input stream. It is assumed that the magic * number has already been read. */ abstract public Snapshot read() throws IOException; /** * Read a snapshot from a file. * * @param heapFile The name of a file containing a heap dump * @param callStack If true, read the call stack of allocaation sites */ public static Snapshot readFile(String heapFile, boolean callStack, int debugLevel) throws IOException { int dumpNumber = 1; int pos = heapFile.lastIndexOf('#'); if (pos > -1) { String num = heapFile.substring(pos+1, heapFile.length()); try { dumpNumber = Integer.parseInt(num, 10); } catch (java.lang.NumberFormatException ex) { String msg = "In file name \"" + heapFile + "\", a dump number was " + "expected after the :, but \"" + num + "\" was found instead."; System.err.println(msg); throw new IOException(msg); } heapFile = heapFile.substring(0, pos); } PositionDataInputStream in = new PositionDataInputStream( new BufferedInputStream(new FileInputStream(heapFile))); try { int i = in.readInt(); if (i == HprofReader.MAGIC_NUMBER) { Reader r = new HprofReader(heapFile, in, dumpNumber, callStack, debugLevel); return r.read(); } else { throw new IOException("Unrecognized magic number: " + i); } } finally { in.close(); } }}
/*
* Copyright (c) 1997, 2008, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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.
*/
/*
* The Original Code is HAT. The Initial Developer of the
* Original Code is Bill Foote, with contributions from others
* at JavaSoft/Sun.
*/
package com.sun.tools.hat.internal.parser;
import java.io.*;
import com.sun.tools.hat.internal.model.*;
/**
* Abstract base class for reading object dump files. A reader need not be
* thread-safe.
*
* @author Bill Foote
*/
public abstract class Reader {
protected PositionDataInputStream in;
protected Reader(PositionDataInputStream in) {
this.in = in;
}
/**
* Read a snapshot from a data input stream. It is assumed that the magic
* number has already been read.
*/
abstract public Snapshot read() throws IOException;
/**
* Read a snapshot from a file.
*
* @param heapFile The name of a file containing a heap dump
* @param callStack If true, read the call stack of allocaation sites
*/
public static Snapshot readFile(String heapFile, boolean callStack,
int debugLevel)
throws IOException {
int dumpNumber = 1;
int pos = heapFile.lastIndexOf('#');
if (pos > -1) {
String num = heapFile.substring(pos+1, heapFile.length());
try {
dumpNumber = Integer.parseInt(num, 10);
} catch (java.lang.NumberFormatException ex) {
String msg = "In file name \"" + heapFile
+ "\", a dump number was "
+ "expected after the :, but \""
+ num + "\" was found instead.";
System.err.println(msg);
throw new IOException(msg);
}
heapFile = heapFile.substring(0, pos);
}
PositionDataInputStream in = new PositionDataInputStream(
new BufferedInputStream(new FileInputStream(heapFile)));
try {
int i = in.readInt();
if (i == HprofReader.MAGIC_NUMBER) {
Reader r
= new HprofReader(heapFile, in, dumpNumber,
callStack, debugLevel);
return r.read();
} else {
throw new IOException("Unrecognized magic number: " + i);
}
} finally {
in.close();
}
}
}