linux-libnuma.h
/*
* Copyright © 2009 CNRS
* Copyright © 2009-2014 Inria. All rights reserved.
* Copyright © 2009-2010, 2012 Université Bordeaux
* See COPYING in top-level directory.
*/
#ifndef HWLOC_LINUX_LIBNUMA_H
#define HWLOC_LINUX_LIBNUMA_H
#include <hwloc.h>
#include <numa.h>
#ifdef __cplusplus
extern "C" {
#endif
static __hwloc_inline int
hwloc_cpuset_to_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset,
unsigned long *mask, unsigned long *maxnode)
{
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NUMANODE);
unsigned long outmaxnode = -1;
/* round-up to the next ulong and clear all bytes */
*maxnode = (*maxnode + 8*sizeof(*mask) - 1) & ~(8*sizeof(*mask) - 1);
memset(mask, 0, *maxnode/8);
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
hwloc_obj_t node = NULL;
while ((node = hwloc_get_next_obj_covering_cpuset_by_depth(topology, cpuset, depth, node)) != NULL) {
if (node->os_index >= *maxnode)
continue;
mask[node->os_index/sizeof(*mask)/8] |= 1UL << (node->os_index % (sizeof(*mask)*8));
if (outmaxnode == (unsigned long) -1 || outmaxnode < node->os_index)
outmaxnode = node->os_index;
}
} else {
/* if no numa, libnuma assumes we have a single node */
if (!hwloc_bitmap_iszero(cpuset)) {
mask[0] = 1;
outmaxnode = 0;
}
}
*maxnode = outmaxnode+1;
return 0;
}
static __hwloc_inline int
hwloc_nodeset_to_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset,
unsigned long *mask, unsigned long *maxnode)
{
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NUMANODE);
unsigned long outmaxnode = -1;
/* round-up to the next ulong and clear all bytes */
*maxnode = (*maxnode + 8*sizeof(*mask) - 1) & ~(8*sizeof(*mask) - 1);
memset(mask, 0, *maxnode/8);
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
hwloc_obj_t node = NULL;
while ((node = hwloc_get_next_obj_by_depth(topology, depth, node)) != NULL) {
if (node->os_index >= *maxnode)
continue;
if (!hwloc_bitmap_isset(nodeset, node->os_index))
continue;
mask[node->os_index/sizeof(*mask)/8] |= 1UL << (node->os_index % (sizeof(*mask)*8));
if (outmaxnode == (unsigned long) -1 || outmaxnode < node->os_index)
outmaxnode = node->os_index;
}
} else {
/* if no numa, libnuma assumes we have a single node */
if (!hwloc_bitmap_iszero(nodeset)) {
mask[0] = 1;
outmaxnode = 0;
}
}
*maxnode = outmaxnode+1;
return 0;
}
static __hwloc_inline int
hwloc_cpuset_from_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_cpuset_t cpuset,
const unsigned long *mask, unsigned long maxnode)
{
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NUMANODE);
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
hwloc_obj_t node = NULL;
hwloc_bitmap_zero(cpuset);
while ((node = hwloc_get_next_obj_by_depth(topology, depth, node)) != NULL)
if (node->os_index < maxnode
&& (mask[node->os_index/sizeof(*mask)/8] & (1UL << (node->os_index % (sizeof(*mask)*8)))))
hwloc_bitmap_or(cpuset, cpuset, node->cpuset);
} else {
/* if no numa, libnuma assumes we have a single node */
if (mask[0] & 1)
hwloc_bitmap_copy(cpuset, hwloc_topology_get_complete_cpuset(topology));
else
hwloc_bitmap_zero(cpuset);
}
return 0;
}
static __hwloc_inline int
hwloc_nodeset_from_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_nodeset_t nodeset,
const unsigned long *mask, unsigned long maxnode)
{
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NUMANODE);
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
hwloc_obj_t node = NULL;
hwloc_bitmap_zero(nodeset);
while ((node = hwloc_get_next_obj_by_depth(topology, depth, node)) != NULL)
if (node->os_index < maxnode
&& (mask[node->os_index/sizeof(*mask)/8] & (1UL << (node->os_index % (sizeof(*mask)*8)))))
hwloc_bitmap_set(nodeset, node->os_index);
} else {
/* if no numa, libnuma assumes we have a single node */
if (mask[0] & 1)
hwloc_bitmap_fill(nodeset);
else
hwloc_bitmap_zero(nodeset);
}
return 0;
}
static __hwloc_inline struct bitmask *
hwloc_cpuset_to_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset) __hwloc_attribute_malloc;
static __hwloc_inline struct bitmask *
hwloc_cpuset_to_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset)
{
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NUMANODE);
struct bitmask *bitmask = numa_allocate_cpumask();
if (!bitmask)
return NULL;
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
hwloc_obj_t node = NULL;
while ((node = hwloc_get_next_obj_covering_cpuset_by_depth(topology, cpuset, depth, node)) != NULL)
if (node->memory.local_memory)
numa_bitmask_setbit(bitmask, node->os_index);
} else {
/* if no numa, libnuma assumes we have a single node */
if (!hwloc_bitmap_iszero(cpuset))
numa_bitmask_setbit(bitmask, 0);
}
return bitmask;
}
static __hwloc_inline struct bitmask *
hwloc_nodeset_to_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset) __hwloc_attribute_malloc;
static __hwloc_inline struct bitmask *
hwloc_nodeset_to_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset)
{
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NUMANODE);
struct bitmask *bitmask = numa_allocate_cpumask();
if (!bitmask)
return NULL;
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
hwloc_obj_t node = NULL;
while ((node = hwloc_get_next_obj_by_depth(topology, depth, node)) != NULL)
if (hwloc_bitmap_isset(nodeset, node->os_index) && node->memory.local_memory)
numa_bitmask_setbit(bitmask, node->os_index);
} else {
/* if no numa, libnuma assumes we have a single node */
if (!hwloc_bitmap_iszero(nodeset))
numa_bitmask_setbit(bitmask, 0);
}
return bitmask;
}
static __hwloc_inline int
hwloc_cpuset_from_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_cpuset_t cpuset,
const struct bitmask *bitmask)
{
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NUMANODE);
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
hwloc_obj_t node = NULL;
hwloc_bitmap_zero(cpuset);
while ((node = hwloc_get_next_obj_by_depth(topology, depth, node)) != NULL)
if (numa_bitmask_isbitset(bitmask, node->os_index))
hwloc_bitmap_or(cpuset, cpuset, node->cpuset);
} else {
/* if no numa, libnuma assumes we have a single node */
if (numa_bitmask_isbitset(bitmask, 0))
hwloc_bitmap_copy(cpuset, hwloc_topology_get_complete_cpuset(topology));
else
hwloc_bitmap_zero(cpuset);
}
return 0;
}
static __hwloc_inline int
hwloc_nodeset_from_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_nodeset_t nodeset,
const struct bitmask *bitmask)
{
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NUMANODE);
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
hwloc_obj_t node = NULL;
hwloc_bitmap_zero(nodeset);
while ((node = hwloc_get_next_obj_by_depth(topology, depth, node)) != NULL)
if (numa_bitmask_isbitset(bitmask, node->os_index))
hwloc_bitmap_set(nodeset, node->os_index);
} else {
/* if no numa, libnuma assumes we have a single node */
if (numa_bitmask_isbitset(bitmask, 0))
hwloc_bitmap_fill(nodeset);
else
hwloc_bitmap_zero(nodeset);
}
return 0;
}
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* HWLOC_LINUX_NUMA_H */
hwloc_get_next_obj_by_depth
static hwloc_obj_t hwloc_get_next_obj_by_depth(hwloc_topology_t topology, unsigned depth, hwloc_obj_t prev)
Returns the next object at depth depth.
hwloc_const_nodeset_t
hwloc_const_bitmap_t hwloc_const_nodeset_t
A non-modifiable hwloc_nodeset_t.
Definition: hwloc.h:147
hwloc_obj_memory_s::local_memory
hwloc_uint64_t local_memory
Local memory (in bytes)
Definition: hwloc.h:326
HWLOC_OBJ_NUMANODE
NUMA node. A set of processors around memory which the processors can directly access.
Definition: hwloc.h:183
hwloc_cpuset_t
hwloc_bitmap_t hwloc_cpuset_t
A CPU set is a bitmap whose bits are set according to CPU physical OS indexes.
Definition: hwloc.h:125
hwloc_cpuset_from_linux_libnuma_ulongs
static int hwloc_cpuset_from_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_cpuset_t cpuset, const unsigned long *mask, unsigned long maxnode)
Convert the array of unsigned long mask into hwloc CPU set.
Definition: linux-libnuma.h:145
hwloc_get_next_obj_covering_cpuset_by_depth
static hwloc_obj_t hwloc_get_next_obj_covering_cpuset_by_depth(hwloc_topology_t topology, hwloc_const_cpuset_t set, unsigned depth, hwloc_obj_t prev)
Iterate through same-depth objects covering at least CPU set set.
Definition: helper.h:328
hwloc_bitmap_isset
int hwloc_bitmap_isset(hwloc_const_bitmap_t bitmap, unsigned id)
Test whether index id is part of bitmap bitmap.
hwloc_bitmap_copy
void hwloc_bitmap_copy(hwloc_bitmap_t dst, hwloc_const_bitmap_t src)
Copy the contents of bitmap src into the already allocated bitmap dst.
hwloc_nodeset_t
hwloc_bitmap_t hwloc_nodeset_t
A node set is a bitmap whose bits are set according to NUMA memory node physical OS indexes...
Definition: hwloc.h:144
hwloc_const_cpuset_t
hwloc_const_bitmap_t hwloc_const_cpuset_t
A non-modifiable hwloc_cpuset_t.
Definition: hwloc.h:127
hwloc_bitmap_zero
void hwloc_bitmap_zero(hwloc_bitmap_t bitmap)
Empty the bitmap bitmap.
hwloc_bitmap_fill
void hwloc_bitmap_fill(hwloc_bitmap_t bitmap)
Fill bitmap bitmap with all possible indexes (even if those objects don&#39;t exist or are otherwise unav...
hwloc_get_type_depth
int hwloc_get_type_depth(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the depth of objects of type type.
hwloc_nodeset_from_linux_libnuma_ulongs
static int hwloc_nodeset_from_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_nodeset_t nodeset, const unsigned long *mask, unsigned long maxnode)
Convert the array of unsigned long mask into hwloc NUMA node set.
Definition: linux-libnuma.h:178
hwloc_bitmap_set
void hwloc_bitmap_set(hwloc_bitmap_t bitmap, unsigned id)
Add index id in bitmap bitmap.
hwloc_bitmap_or
void hwloc_bitmap_or(hwloc_bitmap_t res, hwloc_const_bitmap_t bitmap1, hwloc_const_bitmap_t bitmap2)
Or bitmaps bitmap1 and bitmap2 and store the result in bitmap res.
hwloc_obj::memory
struct hwloc_obj_memory_s memory
Memory attributes.
Definition: hwloc.h:358
hwloc_cpuset_to_linux_libnuma_bitmask
static struct bitmask * hwloc_cpuset_to_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset)
Convert hwloc CPU set cpuset into the returned libnuma bitmask.
Definition: linux-libnuma.h:237
hwloc_topology_t
struct hwloc_topology * hwloc_topology_t
Topology context.
Definition: hwloc.h:609
hwloc_nodeset_from_linux_libnuma_bitmask
static int hwloc_nodeset_from_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_nodeset_t nodeset, const struct bitmask *bitmask)
Convert libnuma bitmask bitmask into hwloc NUMA node set nodeset.
Definition: linux-libnuma.h:325
hwloc_obj::os_index
unsigned os_index
OS-provided physical index number. It is not guaranteed unique across the entire machine, except for PUs and NUMA nodes.
Definition: hwloc.h:349
hwloc_nodeset_to_linux_libnuma_ulongs
static int hwloc_nodeset_to_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset, unsigned long *mask, unsigned long *maxnode)
Convert hwloc NUMA node set nodeset into the array of unsigned long mask.
Definition: linux-libnuma.h:101
hwloc_obj::cpuset
hwloc_cpuset_t cpuset
CPUs covered by this object.
Definition: hwloc.h:398
hwloc_nodeset_to_linux_libnuma_bitmask
static struct bitmask * hwloc_nodeset_to_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset)
Convert hwloc NUMA node set nodeset into the returned libnuma bitmask.
Definition: linux-libnuma.h:270
hwloc_cpuset_from_linux_libnuma_bitmask
static int hwloc_cpuset_from_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_cpuset_t cpuset, const struct bitmask *bitmask)
Convert libnuma bitmask bitmask into hwloc CPU set cpuset.
Definition: linux-libnuma.h:297
hwloc_cpuset_to_linux_libnuma_ulongs
static int hwloc_cpuset_to_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset, unsigned long *mask, unsigned long *maxnode)
Convert hwloc CPU set cpuset into the array of unsigned long mask.
Definition: linux-libnuma.h:58
HWLOC_TYPE_DEPTH_UNKNOWN
No object of given type exists in the topology.
Definition: hwloc.h:1200
hwloc_topology_get_complete_cpuset
static hwloc_const_cpuset_t hwloc_topology_get_complete_cpuset(hwloc_topology_t topology)
Get complete CPU set.
Definition: helper.h:803
hwloc_obj
Structure of a topology object.
Definition: hwloc.h:345
hwloc_bitmap_iszero
int hwloc_bitmap_iszero(hwloc_const_bitmap_t bitmap)
Test whether bitmap bitmap is empty.