1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   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  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package jdk.test.lib.hprof;
  25 
  26 import java.io.File;
  27 import jdk.test.lib.hprof.model.Snapshot;
  28 import jdk.test.lib.hprof.parser.Reader;
  29 
  30 /**
  31  * Helper class to parse a java heap dump file.
  32  */
  33 public class HprofParser {
  34 
  35     /**
  36      * @see #parse(File, boolean, boolean, boolean)
  37      */
  38     public static void parse(File dump) throws Exception {
  39         parse(dump, false, true, true);
  40     }
  41 
  42     /**
  43      * @see #parse(File, boolean, boolean, boolean)
  44      */
  45     public static void parseWithDebugInfo(File dump) throws Exception {
  46         parse(dump, true, true, true);
  47     }
  48 
  49     /**
  50      * Parse a java heap dump file
  51      *
  52      * @param dump Heap dump file to parse
  53      * @param debug Turn on/off debug file parsing
  54      * @param callStack Turn on/off tracking of object allocation call stack
  55      * @param calculateRefs Turn on/off tracking object allocation call stack
  56      * @throws Exception
  57      */
  58     public static void parse(File dump, boolean debug, boolean callStack, boolean calculateRefs) throws Exception {
  59         int debugLevel = debug ? 2 : 0;
  60         Snapshot snapshot = Reader.readFile(dump.getAbsolutePath(), callStack, debugLevel);
  61 
  62         System.out.println("Snapshot read, resolving...");
  63         snapshot.resolve(calculateRefs);
  64         System.out.println("Snapshot resolved.");
  65     }
  66 
  67 }