org.apache.cassandra.utils.memory

Class ContextAllocator

java.lang.Object

org.apache.cassandra.utils.memory.AbstractAllocator

org.apache.cassandra.utils.memory.ContextAllocator

All Implemented Interfaces:

com.google.common.base.Function<Cell,Cell>

public final class ContextAllocator
extends AbstractAllocator
implements com.google.common.base.Function<Cell,Cell>

Wraps calls to a PoolAllocator with the provided writeOp. Also doubles as a Function that clones Cells using itself

Constructor Summary

Constructors

Constructor and Description
ContextAllocator(OpOrder.Group opGroup, PoolAllocator allocator, ColumnFamilyStore cfs)

Method Summary

Methods

Modifier and Type	Method and Description
java.nio.ByteBuffer	allocate(int size)
Cell	apply(Cell column)
java.nio.ByteBuffer	clone(java.nio.ByteBuffer buffer) Allocate a slice of the given length.
float	ownershipRatio()
long	owns()
long	reclaiming()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.google.common.base.Function

equals

Constructor Detail

ContextAllocator

public ContextAllocator(OpOrder.Group opGroup,
                PoolAllocator allocator,
                ColumnFamilyStore cfs)

Method Detail

clone

public java.nio.ByteBuffer clone(java.nio.ByteBuffer buffer)

Description copied from class: AbstractAllocator

Allocate a slice of the given length.

Overrides:

clone in class AbstractAllocator

allocate

public java.nio.ByteBuffer allocate(int size)

Specified by:

allocate in class AbstractAllocator

apply

public Cell apply(Cell column)

Specified by:

apply in interface com.google.common.base.Function<Cell,Cell>

owns

public long owns()

Overrides:

owns in class AbstractAllocator

ownershipRatio

public float ownershipRatio()

Overrides:

ownershipRatio in class AbstractAllocator

reclaiming

public long reclaiming()

Overrides:

reclaiming in class AbstractAllocator