Package org.apache.ignite.internal.mem.file

Class MappedFileMemoryProvider

java.lang.Object

org.apache.ignite.internal.mem.file.MappedFileMemoryProvider

All Implemented Interfaces:

DirectMemoryProvider

public class MappedFileMemoryProvider
extends Object
implements DirectMemoryProvider

Memory provider implementation based on memory mapped file.

Doesn't support memory reuse semantics.

Constructor Summary

Constructors

Constructor	Description
MappedFileMemoryProvider(IgniteLogger log, File allocationPath)

Method Summary

Modifier and Type	Method	Description
void	initialize(long[] sizes)
DirectMemoryRegion	nextRegion()	Attempts to allocate next memory region.
void	shutdown(boolean deallocate)	Shuts down the provider.

Methods inherited from class java.lang.Object

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

Constructor Detail

MappedFileMemoryProvider

public MappedFileMemoryProvider(IgniteLogger log,
                                File allocationPath)

Parameters:

allocationPath - Allocation path.

Method Detail

initialize

public void initialize(long[] sizes)

Specified by:

initialize in interface DirectMemoryProvider

Parameters:

sizes - Initializes provider with the chunk sizes.

shutdown

public void shutdown(boolean deallocate)

Shuts down the provider.

Specified by:

shutdown in interface DirectMemoryProvider

Parameters:

deallocate - True to deallocate memory, false to allow memory reuse.

nextRegion

public DirectMemoryRegion nextRegion()

Attempts to allocate next memory region. Will return null if no more regions are available.

Specified by:

nextRegion in interface DirectMemoryProvider

Returns:

Next memory region.