org.terracotta.offheapstore.paging

Class OffHeapStorageArea

java.lang.Object

org.terracotta.offheapstore.paging.OffHeapStorageArea

public class OffHeapStorageArea
extends Object

Author:

cdennis

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	OffHeapStorageArea.Owner

Constructor Summary

Constructors

Constructor and Description
OffHeapStorageArea(PointerSize width, OffHeapStorageArea.Owner owner, PageSource pageSource, int pageSize, boolean thief, boolean victim)
OffHeapStorageArea(PointerSize width, OffHeapStorageArea.Owner owner, PageSource pageSource, int pageSize, boolean thief, boolean victim, float compressThreshold)
OffHeapStorageArea(PointerSize width, OffHeapStorageArea.Owner owner, PageSource pageSource, int initialPageSize, int maximalPageSize, boolean thief, boolean victim)
OffHeapStorageArea(PointerSize width, OffHeapStorageArea.Owner owner, PageSource pageSource, int initialPageSize, int maximalPageSize, boolean thief, boolean victim, float compressThreshold)

Method Summary

Modifier and Type	Method and Description
long	allocate(long size)
void	clear()
void	destroy()
void	free(long address)
long	getAllocatedMemory()
long	getOccupiedMemory()
ByteBuffer	readBuffer(long address, int length) Read the given range and return the data as a single read-only ByteBuffer.
ByteBuffer[]	readBuffers(long address, int length) Read the given range and return the data as an array of read-only ByteBuffers.
byte	readByte(long address)
int	readInt(long address)
long	readLong(long address)
short	readShort(long address)
Collection<Page>	release(Collection<Page> targets)
void	release(long address)
boolean	shrink()
String	toString()
void	validateStorageArea()
void	writeBuffer(long address, ByteBuffer data)
void	writeBuffers(long address, ByteBuffer[] data)
void	writeByte(long address, byte value)
void	writeInt(long address, int value)
void	writeLong(long address, long value)
void	writeShort(long address, short value)

Methods inherited from class java.lang.Object

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

Constructor Detail

OffHeapStorageArea

public OffHeapStorageArea(PointerSize width,
                          OffHeapStorageArea.Owner owner,
                          PageSource pageSource,
                          int pageSize,
                          boolean thief,
                          boolean victim)

OffHeapStorageArea

public OffHeapStorageArea(PointerSize width,
                          OffHeapStorageArea.Owner owner,
                          PageSource pageSource,
                          int pageSize,
                          boolean thief,
                          boolean victim,
                          float compressThreshold)

OffHeapStorageArea

public OffHeapStorageArea(PointerSize width,
                          OffHeapStorageArea.Owner owner,
                          PageSource pageSource,
                          int initialPageSize,
                          int maximalPageSize,
                          boolean thief,
                          boolean victim)

OffHeapStorageArea

public OffHeapStorageArea(PointerSize width,
                          OffHeapStorageArea.Owner owner,
                          PageSource pageSource,
                          int initialPageSize,
                          int maximalPageSize,
                          boolean thief,
                          boolean victim,
                          float compressThreshold)

Method Detail

clear

public void clear()

readByte

public byte readByte(long address)

readShort

public short readShort(long address)

readInt

public int readInt(long address)

readLong

public long readLong(long address)

readBuffer

public ByteBuffer readBuffer(long address,
                             int length)

Read the given range and return the data as a single read-only ByteBuffer.

Parameters:

address - address to read from

length - number of bytes to read

Returns:

a read-only buffer

readBuffers

public ByteBuffer[] readBuffers(long address,
                                int length)

Read the given range and return the data as an array of read-only ByteBuffers.

Parameters:

address - address to read from

length - number of bytes to read

Returns:

an array of read-only buffers

writeByte

public void writeByte(long address,
                      byte value)

writeShort

public void writeShort(long address,
                       short value)

writeInt

public void writeInt(long address,
                     int value)

writeLong

public void writeLong(long address,
                      long value)

writeBuffer

public void writeBuffer(long address,
                        ByteBuffer data)

writeBuffers

public void writeBuffers(long address,
                         ByteBuffer[] data)

free

public void free(long address)

destroy

public void destroy()

allocate

public long allocate(long size)

getAllocatedMemory

public long getAllocatedMemory()

getOccupiedMemory

public long getOccupiedMemory()

toString

public String toString()

Overrides:

toString in class Object

validateStorageArea

public void validateStorageArea()

release

public void release(long address)

release

public Collection<Page> release(Collection<Page> targets)

shrink

public boolean shrink()