javax.realtime
Class RefCountedArena

java.lang.Object
  javax.realtime.MemoryArea
      javax.realtime.Arena
          javax.realtime.RefCountedArena

public class RefCountedArena

extends Arena

The RefCountedArena class implements a reference counted arena. A RefCountedArena is alive if there are live objects or root pointer pointing to it or if there are external references to the objects allocated within the arena.

Author:

Angelo Corsaro

Field Summary

Fields inherited from class javax.realtime.MemoryArea

logic, parent, sizeInBytes

Method Summary

protected void	fini()
protected void	init()
long	memoryConsumed() An exact count, in bytes, of the all of the memory currently used by the system for the allocated objects.
long	memoryRemaining() An approximation to the total amount of memory currently available for future allocated objects, measured in bytes.

Methods inherited from class javax.realtime.Arena

getMaximumSize, getPortal, setPortal

Methods inherited from class javax.realtime.MemoryArea

enter, enter, executeInArea, finalize, getMemoryArea, guardedRun, newArray, newInstance, newInstance, size

Methods inherited from class java.lang.Object

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

Method Detail

memoryConsumed

public long memoryConsumed()

An exact count, in bytes, of the all of the memory currently used by the system for the allocated objects.

Specified by:

memoryConsumed in class MemoryArea

Returns:

The amount of memory consumed in bytes.

memoryRemaining

public long memoryRemaining()

An approximation to the total amount of memory currently available for future allocated objects, measured in bytes.

Specified by:

memoryRemaining in class MemoryArea

Returns:

The amount of remaining memory in bytes.

init

protected void init()

Specified by:

init in class MemoryArea

fini

protected void fini()

Specified by:

fini in class MemoryArea