Package org.apache.cassandra.net

Class ShareableBytes

java.lang.Object

org.apache.cassandra.net.ShareableBytes

public class ShareableBytes
extends java.lang.Object

A wrapper for possibly sharing portions of a single, BufferPools.forNetworking() managed, ByteBuffer; optimised for the case where no sharing is necessary. When sharing is necessary, share() method must be invoked by the owning thread before a ShareableBytes instance can be shared with another thread.

Method Summary

Modifier and Type	Method	Description
java.nio.ByteBuffer	get()
boolean	hasRemaining()
void	release()
int	remaining()
ShareableBytes	share()	Ensure this ShareableBytes will use atomic operations for updating its count from now on.
ShareableBytes	sliceAndConsume(int length)	Create a slice over the next length bytes, consuming them from our buffer, and incrementing the owner count
static ShareableBytes	wrap(java.nio.ByteBuffer buffer)

Methods inherited from class java.lang.Object

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

Method Detail

get

public java.nio.ByteBuffer get()

hasRemaining

public boolean hasRemaining()

remaining

public int remaining()

share

public ShareableBytes share()

Ensure this ShareableBytes will use atomic operations for updating its count from now on. The first invocation must occur while the calling thread has exclusive access (though there may be more than one 'owner', these must all either be owned by the calling thread or otherwise not being used)

release

public void release()

sliceAndConsume

public ShareableBytes sliceAndConsume(int length)

Create a slice over the next length bytes, consuming them from our buffer, and incrementing the owner count

wrap

public static ShareableBytes wrap(java.nio.ByteBuffer buffer)