test/lib/jdk/test/lib/hprof/parser/HprofReader.java

rev 58893 : 8237354: Add option to jcmd to write a gzipped heap dump
Reviewed-by:

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 2017, 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
--- 1,7 ----
  /*
!  * Copyright (c) 1997, 2020, 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
*** 154,169 ****
  
      public static boolean verifyMagicNumber(int numberRead) {
          return (numberRead == MAGIC_NUMBER);
      }
  
!     public HprofReader(String fileName, PositionDataInputStream in,
                         int dumpNumber, boolean callStack, int debugLevel)
                         throws IOException {
          super(in);
!         RandomAccessFile file = new RandomAccessFile(fileName, "r");
!         this.snapshot = new Snapshot(MappedReadBuffer.create(file));
          this.dumpsToSkip = dumpNumber - 1;
          this.callStack = callStack;
          this.debugLevel = debugLevel;
          names = new Hashtable<Long, String>();
          threadObjects = new Hashtable<Integer, ThreadObject>(43);
--- 154,168 ----
  
      public static boolean verifyMagicNumber(int numberRead) {
          return (numberRead == MAGIC_NUMBER);
      }
  
!     public HprofReader(ReadBuffer readBuffer, PositionDataInputStream in,
                         int dumpNumber, boolean callStack, int debugLevel)
                         throws IOException {
          super(in);
!         this.snapshot = new Snapshot(readBuffer);
          this.dumpsToSkip = dumpNumber - 1;
          this.callStack = callStack;
          this.debugLevel = debugLevel;
          names = new Hashtable<Long, String>();
          threadObjects = new Hashtable<Integer, ThreadObject>(43);
*** 173,182 ****
--- 172,188 ----
              stackTraces = new Hashtable<Integer, StackTrace>(43);
              classNameFromSerialNo = new Hashtable<Integer, String>();
          }
      }
  
+     public HprofReader(String fileName, PositionDataInputStream in,
+                        int dumpNumber, boolean callStack, int debugLevel)
+                        throws IOException {
+         this(MappedReadBuffer.create(new RandomAccessFile(fileName, "r")),
+             in, dumpNumber, callStack, debugLevel);
+     }
+ 
      public Snapshot read() throws IOException {
          currPos = 4;    // 4 because of the magic number
          version = readVersionHeader();
          identifierSize = in.readInt();
          snapshot.setIdentifierSize(identifierSize);