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agent/src/share/classes/sun/jvm/hotspot/gc/g1/HeapRegionSetBase.java

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  24 
  25 package sun.jvm.hotspot.gc.g1;
  26 
  27 import java.util.Iterator;
  28 import java.util.Observable;
  29 import java.util.Observer;
  30 
  31 import sun.jvm.hotspot.debugger.Address;
  32 import sun.jvm.hotspot.runtime.VM;
  33 import sun.jvm.hotspot.runtime.VMObject;
  34 import sun.jvm.hotspot.runtime.VMObjectFactory;
  35 import sun.jvm.hotspot.types.AddressField;
  36 import sun.jvm.hotspot.types.CIntegerField;
  37 import sun.jvm.hotspot.types.Type;
  38 import sun.jvm.hotspot.types.TypeDataBase;
  39 
  40 // Mirror class for HeapRegionSetBase. Represents a group of regions.
  41 
  42 public class HeapRegionSetBase extends VMObject {
  43 
  44     static private long countField;

  45 
  46     static {
  47         VM.registerVMInitializedObserver(new Observer() {
  48                 public void update(Observable o, Object data) {
  49                     initialize(VM.getVM().getTypeDataBase());
  50                 }
  51             });
  52     }
  53 
  54     static private synchronized void initialize(TypeDataBase db) {
  55         Type type = db.lookupType("HeapRegionSetBase");
  56 
  57         countField = type.getField("_count").getOffset();
  58     }
  59 
  60 
  61     public HeapRegionSetCount count() {
  62         Address countFieldAddr = addr.addOffsetTo(countField);
  63         return (HeapRegionSetCount) VMObjectFactory.newObject(HeapRegionSetCount.class, countFieldAddr);
  64     }
  65 
  66     public HeapRegionSetBase(Address addr) {
  67         super(addr);
  68     }
  69 }


  24 
  25 package sun.jvm.hotspot.gc.g1;
  26 
  27 import java.util.Iterator;
  28 import java.util.Observable;
  29 import java.util.Observer;
  30 
  31 import sun.jvm.hotspot.debugger.Address;
  32 import sun.jvm.hotspot.runtime.VM;
  33 import sun.jvm.hotspot.runtime.VMObject;
  34 import sun.jvm.hotspot.runtime.VMObjectFactory;
  35 import sun.jvm.hotspot.types.AddressField;
  36 import sun.jvm.hotspot.types.CIntegerField;
  37 import sun.jvm.hotspot.types.Type;
  38 import sun.jvm.hotspot.types.TypeDataBase;
  39 
  40 // Mirror class for HeapRegionSetBase. Represents a group of regions.
  41 
  42 public class HeapRegionSetBase extends VMObject {
  43 
  44     // uint _length
  45     static private CIntegerField lengthField;
  46 
  47     static {
  48         VM.registerVMInitializedObserver(new Observer() {
  49                 public void update(Observable o, Object data) {
  50                     initialize(VM.getVM().getTypeDataBase());
  51                 }
  52             });
  53     }
  54 
  55     static private synchronized void initialize(TypeDataBase db) {
  56         Type type = db.lookupType("HeapRegionSetBase");
  57 
  58         lengthField = type.getCIntegerField("_length");
  59     }
  60 
  61     public long length() {
  62         return lengthField.getValue(addr);


  63     }
  64 
  65     public HeapRegionSetBase(Address addr) {
  66         super(addr);
  67     }
  68 }
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