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edu.emory.mathcs.util.allocator
Class Allocator.Buffer  

java.lang.Object
  edu.emory.mathcs.util.allocator.Allocator.Buffer

Direct Known Subclasses:

PoolingAllocator.Buffer

Enclosing class:

Allocator

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public abstract static class Allocator.Buffer

extends java.lang.Object

Represents the data buffer returned to the application as a result of allocate() request. Contains actual byte[] array and the size value. Users should access only the [0..size] region of the array, since the initial content of the remaining part is undefined.

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Field Summary
protected  byte[]	data
private  int	refcount
protected  int	size

 

Constructor Summary
protected	Allocator.Buffer(byte[] data, int size)

 

Method Summary
void	addRef()           Increase reference count on this buffer.
byte[]	getData()           Returns the data array encapsulated in this buffer.
int	getSize()           Returns the size of this buffer.
protected abstract  void	reclaim()
void	releaseRef()           Decrease the reference count on this buffer.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

data

protected final byte[] data

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size

protected final int size

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refcount

private int refcount

Constructor Detail

Allocator.Buffer

protected Allocator.Buffer(byte[] data,
                           int size)

Method Detail

getData

public byte[] getData()

Returns the data array encapsulated in this buffer.

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getSize

public int getSize()

Returns the size of this buffer. The length of the array encapsulated in this buffer can be larger than that value, but users are expected to access only the [0..size] region of the array.

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addRef

public void addRef()

Increase reference count on this buffer.

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releaseRef

public void releaseRef()

Decrease the reference count on this buffer. When the reference count reaches 0, the buffer may be reclaimed by the allocator and results of any further usage of that buffer are undefined.

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reclaim

protected abstract void reclaim()

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