Package org.apache.activemq.artemis.core.io.util

Interface ByteBufferPool

public interface ByteBufferPool

Object Pool that allows to borrow and release ByteBuffers according to a specific type (direct/heap).

The suggested usage pattern is:

    ByteBuffer buffer = pool.borrow(size);
    //...using buffer...
    pool.release(buffer);
 

Method Summary

Modifier and Type	Method	Description
ByteBuffer	borrow(int size, boolean zeroed)	It returns a ByteBuffer with Buffer.capacity() >= size.
void	release(ByteBuffer buffer)	It pools or free buffer that cannot be used anymore.
static ByteBufferPool	threadLocal(boolean direct)	Factory method that creates a thread-local pool of capacity 1 of ByteBuffers of the specified type (direct/heap).

Method Details

borrow

ByteBuffer borrow(int size,
 boolean zeroed)

It returns a ByteBuffer with Buffer.capacity() >= size.

The buffer is zeroed until size if zeroed=true, with Buffer.position()=0 and Buffer.limit()=size.

release

void release(ByteBuffer buffer)

It pools or free buffer that cannot be used anymore.

If buffer is of a type different from the one that the pool can borrow, it will ignore it.

threadLocal

static ByteBufferPool threadLocal(boolean direct)

Factory method that creates a thread-local pool of capacity 1 of ByteBuffers of the specified type (direct/heap).