org.apache.flink.runtime.state.heap.space

Interface Allocator

All Superinterfaces:

AutoCloseable, Closeable

public interface Allocator
extends Closeable

Implementations are responsible for allocate space.

Method Summary

Modifier and Type	Method and Description
long	allocate(int size) Allocate space with the given size.
void	free(long address) Free the space with the given address.
Chunk	getChunkById(int chunkId) Returns the chunk with the given chunk id.

Methods inherited from interface java.io.Closeable

close

Method Detail

allocate

long allocate(int size)
       throws Exception

Allocate space with the given size.

Parameters:

size - size of space to allocate.

Returns:

address of the allocated space.

Throws:

Exception - This method will throw exception if failed to allocate space.

free

void free(long address)

Free the space with the given address.

Parameters:

address - address of the space to free.

getChunkById

Chunk getChunkById(int chunkId)

Returns the chunk with the given chunk id.

Parameters:

chunkId - id of the chunk.

Returns:

chunk with the given id.