org.apache.cassandra.io.util

Interface Rebufferer.BufferHolder

All Known Implementing Classes:

BufferManagingRebufferer, BufferManagingRebufferer.Aligned, BufferManagingRebufferer.Unaligned, LimitingRebufferer, MmappedRegions.Region

Enclosing interface:

Rebufferer

public static interface Rebufferer.BufferHolder

Method Summary

Modifier and Type	Method and Description
java.nio.ByteBuffer	buffer() Returns a useable buffer (i.e.
long	offset() Position in the file of the start of the buffer.
void	release() To be called when this buffer is no longer in use.

Method Detail

buffer

java.nio.ByteBuffer buffer()

Returns a useable buffer (i.e. one whose position and limit can be freely modified). Its limit will be set to the size of the available data in the buffer. The buffer must be treated as read-only.

offset

long offset()

Position in the file of the start of the buffer.

release

void release()

To be called when this buffer is no longer in use. Must be called for all BufferHolders, or ChunkCache will not be able to free blocks.