org.apache.ignite.internal.mem

Class NumaAllocUtil

java.lang.Object

org.apache.ignite.internal.mem.NumaAllocUtil

public class NumaAllocUtil
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	NUMA_NODES_CNT

Method Summary

Modifier and Type	Method and Description
static long	allocate(long size) Allocate memory using using default NUMA memory policy of current thread.
static long	allocateInterleaved(long size, int[] nodes) Allocate memory interleaved on NUMA nodes.
static long	allocateLocal(long size) Allocate memory on local NUMA node.
static long	allocateOnNode(long size, int node) Allocate memory on specific NUMA node.
static long	chunkSize(long addr) Get allocated buffer size.
static void	free(long addr) Free allocated memory.

Methods inherited from class java.lang.Object

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

Field Detail

NUMA_NODES_CNT

public static final int NUMA_NODES_CNT

Method Detail

allocate

public static long allocate(long size)

Allocate memory using using default NUMA memory policy of current thread. Uses void *numa_alloc(size_t) under the hood.

Parameters:

size - Size of buffer.

Returns:

Address of buffer.

allocateOnNode

public static long allocateOnNode(long size,
                                  int node)

Allocate memory on specific NUMA node. Uses void *numa_alloc_onnode(size_t) under the hood.

Parameters:

size - Size of buffer.

node - NUMA node.

Returns:

Address of buffer.

allocateLocal

public static long allocateLocal(long size)

Allocate memory on local NUMA node. Uses void *numa_alloc_local(size_t) under the hood.

Parameters:

size - Size of buffer.

Returns:

Address of buffer.

allocateInterleaved

public static long allocateInterleaved(long size,
                                       int[] nodes)

Allocate memory interleaved on NUMA nodes. Uses void *numa_alloc_interleaved_subset(size_t, struct bitmask*) under the hood.

Parameters:

size - Size of buffer.

nodes - Array of nodes allocate on. If null or empty, allocate on all NODES.

Returns:

Address of buffer.

chunkSize

public static long chunkSize(long addr)

Get allocated buffer size.

Parameters:

addr - Address of buffer.

Returns:

Size of buffer.

free

public static void free(long addr)

Free allocated memory.

Parameters:

addr - Address of buffer.