org.apache.cassandra.io.util
Class Memory

java.lang.Object
  org.apache.cassandra.io.util.Memory

Direct Known Subclasses:

FreeableMemory

public class Memory
extends java.lang.Object

Field Summary

protected long

peer

Constructor Summary

protected

Memory(long bytes)

Method Summary

static Memory	allocate(long bytes)
void	free()
byte	getByte(long offset)
void	getBytes(long memoryOffset, byte[] buffer, int bufferOffset, int count) Transfers count bytes from Memory starting at memoryOffset to buffer starting at bufferOffset
void	setByte(long offset, byte b)
void	setBytes(long memoryOffset, byte[] buffer, int bufferOffset, int count) Transfers count bytes from buffer to Memory
long	size()

Methods inherited from class java.lang.Object

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

Field Detail

peer

protected long peer

Constructor Detail

Memory

protected Memory(long bytes)

Method Detail

allocate

public static Memory allocate(long bytes)

setByte

public void setByte(long offset,
                    byte b)

setBytes

public void setBytes(long memoryOffset,
                     byte[] buffer,
                     int bufferOffset,
                     int count)

Transfers count bytes from buffer to Memory

Parameters:

memoryOffset - start offset in the memory

buffer - the data buffer

bufferOffset - start offset of the buffer

count - number of bytes to transfer

getByte

public byte getByte(long offset)

getBytes

public void getBytes(long memoryOffset,
                     byte[] buffer,
                     int bufferOffset,
                     int count)

Transfers count bytes from Memory starting at memoryOffset to buffer starting at bufferOffset

Parameters:

memoryOffset - start offset in the memory

buffer - the data buffer

bufferOffset - start offset of the buffer

count - number of bytes to transfer

free

public void free()

size

public long size()