com.sun.squawk.debugger.sda
Class ObjectManager

java.lang.Object
  com.sun.squawk.debugger.sda.ObjectManager

public class ObjectManager
extends Object

This class manages mapping objects in the VM to JDWP objectIDs. This includes the JDWP types: objectID, tagged-objectID, threadID, threadGroupID, stringID, classObjectID, arrayID. It does NOT include referenceTypeID (and subtypes classID, arrayTypeID, interfaceID), methodID, or fieldID.

Constructor Summary

ObjectManager()

Method Summary

Klass	getClassForID(DataType.ObjectID objectID)
DataType.ObjectID	getIDForObject(Object object) Gets a JDWP objectID for an object.
Object	getObjectForID(DataType.ObjectID objectID) Gets the object corresponding to a given JDWP objectID value.
String	getStringForID(DataType.ObjectID objectID)
VMThread	getThreadForID(DataType.ObjectID objectID)
void	writeTaggedObject(PacketOutputStream out, Object object, String s) Writes the JDWP tag and object ID of an object to a given packet stream.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ObjectManager

public ObjectManager()

Method Detail

getIDForObject

public DataType.ObjectID getIDForObject(Object object)

Gets a JDWP objectID for an object.

Parameters:

object - the object to get an identifier for

Returns:

an identifier for object

getObjectForID

public Object getObjectForID(DataType.ObjectID objectID)
                      throws SDWPException

Gets the object corresponding to a given JDWP objectID value.

Parameters:

objectID - the identifier denoting an object

Returns:

the object corresponding to id or null if the object has been garbage collected

Throws:

SDWPException - if objectID does not denote a null object but the object it does denote has been garbage collected

getThreadForID

public VMThread getThreadForID(DataType.ObjectID objectID)
                        throws SDWPException

Throws:

SDWPException

getStringForID

public String getStringForID(DataType.ObjectID objectID)
                      throws SDWPException

Throws:

SDWPException

getClassForID

public Klass getClassForID(DataType.ObjectID objectID)
                    throws SDWPException

Throws:

SDWPException

writeTaggedObject

public void writeTaggedObject(PacketOutputStream out,
                              Object object,
                              String s)
                       throws IOException

Writes the JDWP tag and object ID of an object to a given packet stream.

Parameters:

out - the stream to write to

object - the object to write

s - prefix to use if this write is logged. A value of null prevents logging altogether.

Throws:

IOException