javax.realtime
Class VTMemory

java.lang.Object
  |
  +--javax.realtime.MemoryArea
        |
        +--javax.realtime.ScopedMemory
              |
              +--javax.realtime.VTMemory

public class VTMemory

extends ScopedMemory

The execution time of an allocation from a VTMemory area may take a variable amount of time. However, since VTMemory areas are not subject to garbage collection and objects within it may not be moved, these areas can be used by instances of NoHeapRealtimeThread.

Field Summary

(package private) java.lang.Runnable

logic The logic associated with this

Fields inherited from class javax.realtime.ScopedMemory

portal

Fields inherited from class javax.realtime.MemoryArea

constant, heap, id, memoryConsumed, nullClassArr, nullMem, nullObjArr, scoped, shadow, size

Constructor Summary

VTMemory()
Alternate constructor, with no limits

VTMemory(long initialSizeInBytes, long maxSizeInBytes)
Creates a VTMemory with the given parameters.

VTMemory(long initialSizeInBytes, long maxSizeInBytes, java.lang.Runnable logic)
Creates a VTMemory with the given parameters.

VTMemory(javax.realtime.SizeEstimator initial, javax.realtime.SizeEstimator maximum)
Creates a VTMemory with the given parameters.

VTMemory(javax.realtime.SizeEstimator initial, javax.realtime.SizeEstimator maximum, java.lang.Runnable logic)
Creates a VTMemory with the given parameters.

Method Summary

long	getMaximumSize() Gets the value of the maximum size to which this can grow.
protected void	initNative(long sizeInBytes) Initialize the native component of this VTMemory.
java.lang.String	toString() Create a string representing the name of this.

Methods inherited from class javax.realtime.ScopedMemory

checkAccess, checkNewInstance, enter, enter, getOuterScope, getPortal, getReferenceCount, join, join, joinAndEnter, joinAndEnter, joinAndEnter, joinAndEnter, setPortal, setupMemBlock

Methods inherited from class javax.realtime.MemoryArea

bless, enterMemBlock, executeInArea, exitMemBlock, getMemoryArea, memoryConsumed, memoryRemaining, newArray, newArray, newArray, newArray, newInstance, newInstance, newInstance, newInstance, postSetup, preSetup, registerFinal, shadow, size, startMem, stopMem, throwIllegalAssignmentError

Methods inherited from class java.lang.Object

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

Field Detail

logic

java.lang.Runnable logic

The logic associated with this

Constructor Detail

VTMemory

public VTMemory(long initialSizeInBytes,
                long maxSizeInBytes)

Creates a VTMemory with the given parameters.

VTMemory

public VTMemory(long initialSizeInBytes,
                long maxSizeInBytes,
                java.lang.Runnable logic)

Creates a VTMemory with the given parameters.

Parameters:

logic - An instance of java.lang.Runnable whose run() method will use this as its initial memory area.

VTMemory

public VTMemory(javax.realtime.SizeEstimator initial,
                javax.realtime.SizeEstimator maximum)

Creates a VTMemory with the given parameters.

Parameters:

initial - The size in bytes of the memory to initially allocate for this area.

maximum - The maximum size in bytes of this memory area to which the size may grow estimated by an instance of SizeEstimator.

VTMemory

public VTMemory(javax.realtime.SizeEstimator initial,
                javax.realtime.SizeEstimator maximum,
                java.lang.Runnable logic)

Creates a VTMemory with the given parameters.

Parameters:

initial - The size in bytes of the memory to initially allocate for this area.

maximum - The maximum size in bytes of this memory area to which the size may grow estimated by an instance of SizeEstimator.

logic - An instance of java.lang.Runnable whose run() method will use this as its initial memory area.

VTMemory

public VTMemory()

Alternate constructor, with no limits

Method Detail

getMaximumSize

public long getMaximumSize()

Gets the value of the maximum size to which this can grow.

Overrides:

getMaximumSize in class ScopedMemory

Returns:

The maximum size value.

toString

public java.lang.String toString()

Create a string representing the name of this.

Overrides:

toString in class ScopedMemory

Returns:

A string representing the name of this.

initNative

protected void initNative(long sizeInBytes)

Initialize the native component of this VTMemory.

Specified by:

initNative in class MemoryArea