net.lecousin.framework.io.util

Class LimitWriteOperationsReuseBuffers

java.lang.Object

net.lecousin.framework.concurrent.util.LimitAsyncOperations<ByteBuffer,Integer,IOException>

net.lecousin.framework.io.util.LimitWriteOperations

net.lecousin.framework.io.util.LimitWriteOperationsReuseBuffers

public class LimitWriteOperationsReuseBuffers
extends LimitWriteOperations

This class allows to queue write operations, but blocks if too many are waiting. This can typically used in operations reading from an IO, and writing to another, when the amount of data can be large: usually read operations are faster than write operations, and we need to avoid having too much buffers in memory waiting to write.

Nested Class Summary

Nested classes/interfaces inherited from class net.lecousin.framework.concurrent.util.LimitAsyncOperations

LimitAsyncOperations.Executor<InputType,OutputResultType,OutputErrorType extends Exception>

Constructor Summary

Constructors

Constructor and Description
LimitWriteOperationsReuseBuffers(IO.Writable io, int bufferSize, int maxOperations) Constructor.

Method Summary

Modifier and Type	Method and Description
void	freeBuffer(ByteBuffer buffer) Must be called only if the user has not been used for a write operation, else it will be automatically free when write operation is done.
ByteBuffer	getBuffer() Return a buffer to put data to write.
protected void	writeDone(ByteBuffer buffer, AsyncSupplier<Integer,IOException> result)

Methods inherited from class net.lecousin.framework.concurrent.util.LimitAsyncOperations

flush, getLastPendingOperation, write

Methods inherited from class java.lang.Object

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

Constructor Detail

LimitWriteOperationsReuseBuffers

public LimitWriteOperationsReuseBuffers(IO.Writable io,
                                        int bufferSize,
                                        int maxOperations)

Constructor.

Method Detail

getBuffer

public ByteBuffer getBuffer()

Return a buffer to put data to write.

freeBuffer

public void freeBuffer(ByteBuffer buffer)

Must be called only if the user has not been used for a write operation, else it will be automatically free when write operation is done.

writeDone

protected void writeDone(ByteBuffer buffer,
                         AsyncSupplier<Integer,IOException> result)

Overrides:

writeDone in class LimitAsyncOperations<ByteBuffer,Integer,IOException>