mirror of https://github.com/xzeldon/htop.git
463 lines
14 KiB
C
463 lines
14 KiB
C
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/*
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* Copyright © 2009 CNRS
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* Copyright © 2009-2010 INRIA. All rights reserved.
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* Copyright © 2009-2010 Université Bordeaux 1
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* See COPYING in top-level directory.
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*/
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/** \file
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* \brief Macros to help interaction between hwloc and Linux libnuma.
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*
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* Applications that use both Linux libnuma and hwloc may want to
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* include this file so as to ease conversion between their respective types.
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*/
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#ifndef HWLOC_LINUX_LIBNUMA_H
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#define HWLOC_LINUX_LIBNUMA_H
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#include <hwloc.h>
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#include <numa.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** \defgroup hwlocality_linux_libnuma_ulongs Helpers for manipulating Linux libnuma unsigned long masks
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* @{
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*/
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/** \brief Convert hwloc CPU set \p cpuset into the array of unsigned long \p mask
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*
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* \p mask is the array of unsigned long that will be filled.
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* \p maxnode contains the maximal node number that may be stored in \p mask.
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* \p maxnode will be set to the maximal node number that was found, plus one.
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*
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* This function may be used before calling set_mempolicy, mbind, migrate_pages
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* or any other function that takes an array of unsigned long and a maximal
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* node number as input parameter.
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*/
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static __hwloc_inline int
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hwloc_cpuset_to_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset,
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unsigned long *mask, unsigned long *maxnode)
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{
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int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
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unsigned long outmaxnode = -1;
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/* round-up to the next ulong and clear all bytes */
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*maxnode = (*maxnode + 8*sizeof(*mask) - 1) & ~(8*sizeof(*mask) - 1);
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memset(mask, 0, *maxnode/8);
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if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
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hwloc_obj_t node = NULL;
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while ((node = hwloc_get_next_obj_covering_cpuset_by_type(topology, cpuset, HWLOC_OBJ_NODE, node)) != NULL) {
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if (node->os_index >= *maxnode)
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continue;
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mask[node->os_index/sizeof(*mask)/8] |= 1UL << (node->os_index % (sizeof(*mask)*8));
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if (outmaxnode == (unsigned long) -1 || outmaxnode < node->os_index)
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outmaxnode = node->os_index;
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}
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} else {
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/* if no numa, libnuma assumes we have a single node */
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if (!hwloc_bitmap_iszero(cpuset)) {
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mask[0] = 1;
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outmaxnode = 0;
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}
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}
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*maxnode = outmaxnode+1;
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return 0;
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}
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/** \brief Convert hwloc NUMA node set \p nodeset into the array of unsigned long \p mask
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*
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* \p mask is the array of unsigned long that will be filled.
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* \p maxnode contains the maximal node number that may be stored in \p mask.
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* \p maxnode will be set to the maximal node number that was found, plus one.
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*
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* This function may be used before calling set_mempolicy, mbind, migrate_pages
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* or any other function that takes an array of unsigned long and a maximal
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* node number as input parameter.
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*/
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static __hwloc_inline int
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hwloc_nodeset_to_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset,
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unsigned long *mask, unsigned long *maxnode)
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{
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int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
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unsigned long outmaxnode = -1;
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/* round-up to the next ulong and clear all bytes */
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*maxnode = (*maxnode + 8*sizeof(*mask) - 1) & ~(8*sizeof(*mask) - 1);
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memset(mask, 0, *maxnode/8);
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if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
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hwloc_obj_t node = NULL;
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while ((node = hwloc_get_next_obj_by_type(topology, HWLOC_OBJ_NODE, node)) != NULL) {
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if (node->os_index >= *maxnode)
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continue;
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if (!hwloc_bitmap_isset(nodeset, node->os_index))
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continue;
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mask[node->os_index/sizeof(*mask)/8] |= 1UL << (node->os_index % (sizeof(*mask)*8));
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if (outmaxnode == (unsigned long) -1 || outmaxnode < node->os_index)
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outmaxnode = node->os_index;
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}
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} else {
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/* if no numa, libnuma assumes we have a single node */
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if (!hwloc_bitmap_iszero(nodeset)) {
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mask[0] = 1;
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outmaxnode = 0;
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}
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}
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*maxnode = outmaxnode+1;
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return 0;
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}
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/** \brief Convert the array of unsigned long \p mask into hwloc CPU set
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*
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* \p mask is a array of unsigned long that will be read.
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* \p maxnode contains the maximal node number that may be read in \p mask.
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*
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* This function may be used after calling get_mempolicy or any other function
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* that takes an array of unsigned long as output parameter (and possibly
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* a maximal node number as input parameter).
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*/
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static __hwloc_inline int
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hwloc_cpuset_from_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_cpuset_t cpuset,
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const unsigned long *mask, unsigned long maxnode)
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{
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int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
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if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
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hwloc_obj_t node;
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unsigned i;
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hwloc_bitmap_zero(cpuset);
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for(i=0; i<maxnode; i++)
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if (mask[i/sizeof(*mask)/8] & (1UL << (i% (sizeof(*mask)*8)))) {
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node = hwloc_get_obj_by_depth(topology, depth, i);
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if (node)
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hwloc_bitmap_or(cpuset, cpuset, node->cpuset);
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}
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} else {
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/* if no numa, libnuma assumes we have a single node */
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if (mask[0] & 1)
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hwloc_bitmap_copy(cpuset, hwloc_topology_get_complete_cpuset(topology));
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else
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hwloc_bitmap_zero(cpuset);
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}
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return 0;
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}
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/** \brief Convert the array of unsigned long \p mask into hwloc NUMA node set
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*
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* \p mask is a array of unsigned long that will be read.
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* \p maxnode contains the maximal node number that may be read in \p mask.
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*
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* This function may be used after calling get_mempolicy or any other function
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* that takes an array of unsigned long as output parameter (and possibly
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* a maximal node number as input parameter).
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*/
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static __hwloc_inline int
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hwloc_nodeset_from_linux_libnuma_ulongs(hwloc_topology_t topology, hwloc_nodeset_t nodeset,
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const unsigned long *mask, unsigned long maxnode)
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{
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int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
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if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
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hwloc_obj_t node;
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unsigned i;
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hwloc_bitmap_zero(nodeset);
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for(i=0; i<maxnode; i++)
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if (mask[i/sizeof(*mask)/8] & (1UL << (i% (sizeof(*mask)*8)))) {
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node = hwloc_get_obj_by_depth(topology, depth, i);
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if (node)
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hwloc_bitmap_set(nodeset, node->os_index);
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}
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} else {
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/* if no numa, libnuma assumes we have a single node */
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if (mask[0] & 1)
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hwloc_bitmap_fill(nodeset);
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else
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hwloc_bitmap_zero(nodeset);
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}
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return 0;
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}
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/** @} */
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/** \defgroup hwlocality_linux_libnuma_bitmask Helpers for manipulating Linux libnuma bitmask
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* @{
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*/
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/** \brief Convert hwloc CPU set \p cpuset into the returned libnuma bitmask
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*
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* The returned bitmask should later be freed with numa_bitmask_free.
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*
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* This function may be used before calling many numa_ functions
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* that use a struct bitmask as an input parameter.
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*
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* \return newly allocated struct bitmask.
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*/
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static __hwloc_inline struct bitmask * __hwloc_attribute_malloc
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hwloc_cpuset_to_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset)
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{
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int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
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struct bitmask *bitmask = numa_allocate_cpumask();
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if (!bitmask)
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return NULL;
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if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
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hwloc_obj_t node = NULL;
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while ((node = hwloc_get_next_obj_covering_cpuset_by_type(topology, cpuset, HWLOC_OBJ_NODE, node)) != NULL)
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numa_bitmask_setbit(bitmask, node->os_index);
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} else {
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/* if no numa, libnuma assumes we have a single node */
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if (!hwloc_bitmap_iszero(cpuset))
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numa_bitmask_setbit(bitmask, 0);
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}
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return bitmask;
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}
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/** \brief Convert hwloc NUMA node set \p nodeset into the returned libnuma bitmask
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*
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* The returned bitmask should later be freed with numa_bitmask_free.
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*
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* This function may be used before calling many numa_ functions
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* that use a struct bitmask as an input parameter.
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*
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* \return newly allocated struct bitmask.
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*/
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static __hwloc_inline struct bitmask * __hwloc_attribute_malloc
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hwloc_nodeset_to_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset)
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{
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int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
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struct bitmask *bitmask = numa_allocate_cpumask();
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if (!bitmask)
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return NULL;
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if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
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hwloc_obj_t node = NULL;
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while ((node = hwloc_get_next_obj_by_type(topology, HWLOC_OBJ_NODE, node)) != NULL)
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if (hwloc_bitmap_isset(nodeset, node->os_index))
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numa_bitmask_setbit(bitmask, node->os_index);
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} else {
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/* if no numa, libnuma assumes we have a single node */
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if (!hwloc_bitmap_iszero(nodeset))
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numa_bitmask_setbit(bitmask, 0);
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}
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return bitmask;
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}
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/** \brief Convert libnuma bitmask \p bitmask into hwloc CPU set \p cpuset
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*
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* This function may be used after calling many numa_ functions
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* that use a struct bitmask as an output parameter.
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*/
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static __hwloc_inline int
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hwloc_cpuset_from_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_cpuset_t cpuset,
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const struct bitmask *bitmask)
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{
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int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
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if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
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hwloc_obj_t node;
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int i;
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hwloc_bitmap_zero(cpuset);
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for(i=0; i<NUMA_NUM_NODES; i++)
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if (numa_bitmask_isbitset(bitmask, i)) {
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node = hwloc_get_obj_by_depth(topology, depth, i);
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if (node)
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hwloc_bitmap_or(cpuset, cpuset, node->cpuset);
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}
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} else {
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/* if no numa, libnuma assumes we have a single node */
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if (numa_bitmask_isbitset(bitmask, 0))
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hwloc_bitmap_copy(cpuset, hwloc_topology_get_complete_cpuset(topology));
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else
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hwloc_bitmap_zero(cpuset);
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}
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return 0;
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}
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/** \brief Convert libnuma bitmask \p bitmask into hwloc NUMA node set \p nodeset
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*
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* This function may be used after calling many numa_ functions
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* that use a struct bitmask as an output parameter.
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*/
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static __hwloc_inline int
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hwloc_nodeset_from_linux_libnuma_bitmask(hwloc_topology_t topology, hwloc_nodeset_t nodeset,
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const struct bitmask *bitmask)
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{
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int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
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if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
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hwloc_obj_t node;
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int i;
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hwloc_bitmap_zero(nodeset);
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for(i=0; i<NUMA_NUM_NODES; i++)
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if (numa_bitmask_isbitset(bitmask, i)) {
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node = hwloc_get_obj_by_depth(topology, depth, i);
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if (node)
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hwloc_bitmap_set(nodeset, node->os_index);
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}
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} else {
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/* if no numa, libnuma assumes we have a single node */
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if (numa_bitmask_isbitset(bitmask, 0))
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hwloc_bitmap_fill(nodeset);
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else
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hwloc_bitmap_zero(nodeset);
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}
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return 0;
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}
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/** @} */
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#ifdef NUMA_VERSION1_COMPATIBILITY
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/** \defgroup hwlocality_linux_libnuma_nodemask Helpers for manipulating Linux libnuma nodemask_t
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* @{
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*/
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/** \brief Convert hwloc CPU set \p cpuset into libnuma nodemask \p nodemask
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*
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* This function may be used before calling some old libnuma functions
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* that use a nodemask_t as an input parameter.
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*/
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static __hwloc_inline int
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hwloc_cpuset_to_linux_libnuma_nodemask(hwloc_topology_t topology, hwloc_const_cpuset_t cpuset,
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nodemask_t *nodemask)
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{
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int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
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nodemask_zero(nodemask);
|
||
|
|
|
||
|
|
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
|
||
|
|
hwloc_obj_t node = NULL;
|
||
|
|
while ((node = hwloc_get_next_obj_covering_cpuset_by_type(topology, cpuset, HWLOC_OBJ_NODE, node)) != NULL)
|
||
|
|
nodemask_set(nodemask, node->os_index);
|
||
|
|
} else {
|
||
|
|
/* if no numa, libnuma assumes we have a single node */
|
||
|
|
if (!hwloc_bitmap_iszero(cpuset))
|
||
|
|
nodemask_set(nodemask, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** \brief Convert hwloc NUMA node set \p nodeset into libnuma nodemask \p nodemask
|
||
|
|
*
|
||
|
|
* This function may be used before calling some old libnuma functions
|
||
|
|
* that use a nodemask_t as an input parameter.
|
||
|
|
*/
|
||
|
|
static __hwloc_inline int
|
||
|
|
hwloc_nodeset_to_linux_libnuma_nodemask(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset,
|
||
|
|
nodemask_t *nodemask)
|
||
|
|
{
|
||
|
|
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
|
||
|
|
|
||
|
|
nodemask_zero(nodemask);
|
||
|
|
|
||
|
|
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
|
||
|
|
hwloc_obj_t node = NULL;
|
||
|
|
while ((node = hwloc_get_next_obj_by_type(topology, HWLOC_OBJ_NODE, node)) != NULL)
|
||
|
|
if (hwloc_bitmap_isset(nodeset, node->os_index))
|
||
|
|
nodemask_set(nodemask, node->os_index);
|
||
|
|
} else {
|
||
|
|
/* if no numa, libnuma assumes we have a single node */
|
||
|
|
if (!hwloc_bitmap_iszero(nodeset))
|
||
|
|
nodemask_set(nodemask, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** \brief Convert libnuma nodemask \p nodemask into hwloc CPU set \p cpuset
|
||
|
|
*
|
||
|
|
* This function may be used before calling some old libnuma functions
|
||
|
|
* that use a nodemask_t as an output parameter.
|
||
|
|
*/
|
||
|
|
static __hwloc_inline int
|
||
|
|
hwloc_cpuset_from_linux_libnuma_nodemask(hwloc_topology_t topology, hwloc_cpuset_t cpuset,
|
||
|
|
const nodemask_t *nodemask)
|
||
|
|
{
|
||
|
|
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
|
||
|
|
|
||
|
|
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
|
||
|
|
hwloc_obj_t node;
|
||
|
|
int i;
|
||
|
|
hwloc_bitmap_zero(cpuset);
|
||
|
|
for(i=0; i<NUMA_NUM_NODES; i++)
|
||
|
|
if (nodemask_isset(nodemask, i)) {
|
||
|
|
node = hwloc_get_obj_by_depth(topology, depth, i);
|
||
|
|
if (node)
|
||
|
|
hwloc_bitmap_or(cpuset, cpuset, node->cpuset);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
/* if no numa, libnuma assumes we have a single node */
|
||
|
|
if (nodemask_isset(nodemask, 0))
|
||
|
|
hwloc_bitmap_copy(cpuset, hwloc_topology_get_complete_cpuset(topology));
|
||
|
|
else
|
||
|
|
hwloc_bitmap_zero(cpuset);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** \brief Convert libnuma nodemask \p nodemask into hwloc NUMA node set \p nodeset
|
||
|
|
*
|
||
|
|
* This function may be used before calling some old libnuma functions
|
||
|
|
* that use a nodemask_t as an output parameter.
|
||
|
|
*/
|
||
|
|
static __hwloc_inline int
|
||
|
|
hwloc_nodeset_from_linux_libnuma_nodemask(hwloc_topology_t topology, hwloc_nodeset_t nodeset,
|
||
|
|
const nodemask_t *nodemask)
|
||
|
|
{
|
||
|
|
int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
|
||
|
|
|
||
|
|
if (depth != HWLOC_TYPE_DEPTH_UNKNOWN) {
|
||
|
|
hwloc_obj_t node;
|
||
|
|
int i;
|
||
|
|
hwloc_bitmap_zero(nodeset);
|
||
|
|
for(i=0; i<NUMA_NUM_NODES; i++)
|
||
|
|
if (nodemask_isset(nodemask, i)) {
|
||
|
|
node = hwloc_get_obj_by_depth(topology, depth, i);
|
||
|
|
if (node)
|
||
|
|
hwloc_bitmap_set(nodeset, node->os_index);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
/* if no numa, libnuma assumes we have a single node */
|
||
|
|
if (nodemask_isset(nodemask, 0))
|
||
|
|
hwloc_bitmap_fill(nodeset);
|
||
|
|
else
|
||
|
|
hwloc_bitmap_zero(nodeset);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
#endif /* NUMA_VERSION1_COMPATIBILITY */
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
} /* extern "C" */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* HWLOC_LINUX_NUMA_H */
|