org.apache.directmemory.memory
Interface AllocationPolicy

All Known Implementing Classes:

RoundRobinAllocationPolicy

public interface AllocationPolicy

Interface describing the buffer allocation policy. The implementations will be initialized by setting the list of buffers init(List), and every allocation will call #getActiveBuffer(OffHeapMemoryBuffer, int), passing the previously (possibly null) buffer that failed to allocate and the number of the current allocation

Author:

bperroud

Method Summary

ByteBufferAllocator	getActiveAllocator(ByteBufferAllocator previousAllocator, int allocationNumber) Returns the ByteBufferAllocator to use to allocate.
void	init(List<ByteBufferAllocator> allocators) Initialization function.
void	reset() Reset internal state

Method Detail

init

void init(List<ByteBufferAllocator> allocators)

Initialization function.

Parameters:

buffers -

getActiveAllocator

ByteBufferAllocator getActiveAllocator(ByteBufferAllocator previousAllocator,
                                       int allocationNumber)

Returns the ByteBufferAllocator to use to allocate.

Parameters:

previousAllocator - : the previously used ByteBufferAllocator, or null if it's the first allocation

allocationNumber - : the number of time the allocation has already failed.

Returns:

the ByteBufferAllocator to use, or null if allocation has failed.

reset

void reset()

Reset internal state