ds.funnel.data.buffer

Interface BufferPool

All Known Implementing Classes:

BufferPoolChunk, BufferPoolImpl, BufferPoolStriped

public interface BufferPool

Method Summary

Modifier and Type	Method and Description
java.nio.ByteBuffer	allocBuffer(int minSize) Returns an empty buffer with at least minSize capacity.
java.nio.ByteBuffer	allocBufferChunk() Returns an empty buffer with chunkSize capacity.
int	getChunkSize()
int	getNumChunks()
void	printAllocated() Print a list of buffers currently allocated.
void	returnBuffer(java.nio.ByteBuffer inBuffer) Return a buffer to the buffer pool.

Method Detail

getChunkSize

int getChunkSize()

Returns:

The size that allocated buffers are allocated in increments of.

getNumChunks

int getNumChunks()

Returns:

The total number of direct byte buffer chunks.

allocBuffer

java.nio.ByteBuffer allocBuffer(int minSize)

Returns an empty buffer with at least minSize capacity.

Parameters:

minSize - - The minimum size of the returned buffer.

Returns:

An empty ByteBuffer (may be new or reused).

allocBufferChunk

java.nio.ByteBuffer allocBufferChunk()

Returns an empty buffer with chunkSize capacity.

Parameters:

minSize - - The minimum size of the returned buffer.

Returns:

An empty ByteBuffer (may be new or reused).

returnBuffer

void returnBuffer(java.nio.ByteBuffer inBuffer)

Return a buffer to the buffer pool. It is no longer safe to read or write to the returned buffer, as it may be reallocated to a different thread.

Parameters:

inBuffer - - The buffer to return to the pool.

printAllocated

void printAllocated()

Print a list of buffers currently allocated. Used for debugging.