1 /*
   2  * Copyright (c) 2000, 2004, 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 
  25 package sun.jvm.hotspot.oops;
  26 
  27 import java.io.*;
  28 import java.util.*;
  29 import sun.jvm.hotspot.debugger.*;
  30 import sun.jvm.hotspot.runtime.*;
  31 import sun.jvm.hotspot.types.*;
  32 import sun.jvm.hotspot.utilities.*;
  33 
  34 // A MethodData provides interpreter profiling information
  35 
  36 public class MethodData extends Oop {






















































































  37   static {
  38     VM.registerVMInitializedObserver(new Observer() {
  39         public void update(Observable o, Object data) {
  40           initialize(VM.getVM().getTypeDataBase());
  41         }
  42       });
  43   }
  44 
  45   private static synchronized void initialize(TypeDataBase db) throws WrongTypeException {
  46     Type type      = db.lookupType("methodDataOopDesc");
  47     baseOffset     = type.getSize();
  48 
  49     size           = new CIntField(type.getCIntegerField("_size"), 0);
  50     method         = new OopField(type.getOopField("_method"), 0);
  51     // FIXME: add more fields and accessors









  52   }

  53 









































  54   MethodData(OopHandle handle, ObjectHeap heap) {
  55     super(handle, heap);
  56   }
  57 
  58   public boolean isMethodData()        { return true; }
  59 
  60   private static long baseOffset;
  61   private static CIntField size;
  62   private static OopField  method;


  63 



  64   public long getObjectSize() {
  65     return alignObjectSize(size.getValue(this));
  66   }
  67 
  68   public Method getMethod() {
  69     return (Method) method.getValue(this);
  70   }
  71 
  72   public void printValueOn(PrintStream tty) {
  73     Method m = getMethod();
  74     tty.print("MethodData for " + m.getName().asString() + m.getSignature().asString());
  75   }
  76 
  77   public void iterateFields(OopVisitor visitor, boolean doVMFields) {
  78     super.iterateFields(visitor, doVMFields);
  79     if (doVMFields) {
  80       visitor.doOop(method, true);
  81       visitor.doCInt(size, true);
  82     }
  83   }



















































































































  84 }
--- EOF ---