Package org.apache.arrow.memory.netty

Class NettyAllocationManager

java.lang.Object

org.apache.arrow.memory.AllocationManager

org.apache.arrow.memory.netty.NettyAllocationManager

public class NettyAllocationManager
extends AllocationManager

The default implementation of AllocationManager. The implementation is responsible for managing when memory is allocated and returned to the Netty-based PooledByteBufAllocatorL.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.arrow.memory.AllocationManager

AllocationManager.Factory

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_ALLOCATION_CUTOFF_VALUE	The default cut-off value for switching allocation strategies.
static final AllocationManager.Factory	FACTORY

Method Summary

Modifier and Type	Method	Description
long	getSize()	Returns the underlying memory chunk size managed.
protected long	memoryAddress()
protected void	release0()

Methods inherited from class java.lang.Object

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

Field Details

FACTORY

public static final AllocationManager.Factory FACTORY

DEFAULT_ALLOCATION_CUTOFF_VALUE

public static final int DEFAULT_ALLOCATION_CUTOFF_VALUE

The default cut-off value for switching allocation strategies. If the request size is not greater than the cut-off value, we will allocate memory by PooledByteBufAllocatorL APIs, otherwise, we will use PlatformDependent APIs.

See Also:

• Constant Field Values

Method Details

memoryAddress

protected long memoryAddress()

Specified by:

memoryAddress in class AllocationManager

release0

protected void release0()

Specified by:

release0 in class AllocationManager

getSize

public long getSize()

Returns the underlying memory chunk size managed.

NettyAllocationManager rounds requested size up to the next power of two.

Specified by:

getSize in class AllocationManager