agent/src/share/classes/sun/jvm/hotspot/memory/FreeList.java

Fri, 09 May 2008 08:55:13 -0700

author
dcubed
date
Fri, 09 May 2008 08:55:13 -0700
changeset 587
c70a245cad3a
child 631
d1605aabd0a1
permissions
-rw-r--r--

6670684: 4/5 SA command universe did not print out CMS space information
Summary: Forward port of Yumin's fix for 6670684 from HSX-11; Yumin verified the port was correct.
Reviewed-by: dcubed

     1 /*
     2  * @(#)FreeList.java
     3  *
     4  * Copyright 2000-2007 Sun Microsystems, Inc.  All Rights Reserved.
     5  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     6  *
     7  * This code is free software; you can redistribute it and/or modify it
     8  * under the terms of the GNU General Public License version 2 only, as
     9  * published by the Free Software Foundation.
    10  *
    11  * This code is distributed in the hope that it will be useful, but WITHOUT
    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    14  * version 2 for more details (a copy is included in the LICENSE file that
    15  * accompanied this code).
    16  *
    17  * You should have received a copy of the GNU General Public License version
    18  * 2 along with this work; if not, write to the Free Software Foundation,
    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    20  *
    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
    22  * CA 95054 USA or visit www.sun.com if you need additional information or
    23  * have any questions.
    24  *
    25  */
    27 package sun.jvm.hotspot.memory;
    29 import java.util.*;
    30 import sun.jvm.hotspot.debugger.*;
    31 import sun.jvm.hotspot.types.*;
    32 import sun.jvm.hotspot.runtime.*;
    34 public class FreeList extends VMObject {
    35    static {
    36       VM.registerVMInitializedObserver(new Observer() {
    37          public void update(Observable o, Object data) {
    38             initialize(VM.getVM().getTypeDataBase());
    39          }
    40       });
    41    }
    43    private static synchronized void initialize(TypeDataBase db) {
    44       Type type = db.lookupType("FreeList");
    45       sizeField = type.getCIntegerField("_size");
    46       countField = type.getCIntegerField("_count");
    47       headerSize = type.getSize();
    48    }
    50    // Fields
    51    private static CIntegerField sizeField;
    52    private static CIntegerField countField;
    53    private static long          headerSize;
    55    //Constructor
    56    public FreeList(Address address) {
    57      super(address);
    58    }
    60    // Accessors
    61    public long size() {
    62       return sizeField.getValue(addr);
    63    }
    65    public long count() {
    66       return  countField.getValue(addr);
    67    }
    69    public static long sizeOf() {
    70      return headerSize;
    71   }
    72 }

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