/
memattrs.c
1197 lines (1035 loc) · 33.1 KB
/
memattrs.c
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/*
* Copyright © 2020 Inria. All rights reserved.
* See COPYING in top-level directory.
*/
#include "private/autogen/config.h"
#include "hwloc.h"
#include "private/private.h"
/*****************************
* Attributes
*/
static __hwloc_inline
hwloc_uint64_t hwloc__memattr_get_convenience_value(hwloc_memattr_id_t id,
hwloc_obj_t node)
{
if (id == HWLOC_MEMATTR_ID_CAPACITY)
return node->attr->numanode.local_memory;
else if (id == HWLOC_MEMATTR_ID_LOCALITY)
return hwloc_bitmap_weight(node->cpuset);
else
assert(0);
return 0; /* shut up the compiler */
}
void
hwloc_internal_memattrs_init(struct hwloc_topology *topology)
{
topology->nr_memattrs = 0;
topology->memattrs = NULL;
}
static void
hwloc__setup_memattr(struct hwloc_internal_memattr_s *imattr,
char *name,
unsigned long flags,
unsigned long iflags)
{
imattr->name = name;
imattr->flags = flags;
imattr->iflags = iflags;
imattr->nr_targets = 0;
imattr->targets = NULL;
}
void
hwloc_internal_memattrs_prepare(struct hwloc_topology *topology)
{
#define NR_DEFAULT_MEMATTRS 4
topology->memattrs = malloc(NR_DEFAULT_MEMATTRS * sizeof(*topology->memattrs));
if (!topology->memattrs)
return;
assert(HWLOC_MEMATTR_ID_CAPACITY < NR_DEFAULT_MEMATTRS);
hwloc__setup_memattr(&topology->memattrs[HWLOC_MEMATTR_ID_CAPACITY],
(char *) "Capacity",
HWLOC_MEMATTR_FLAG_HIGHER_FIRST,
HWLOC_IMATTR_FLAG_STATIC_NAME|HWLOC_IMATTR_FLAG_CONVENIENCE);
assert(HWLOC_MEMATTR_ID_LOCALITY < NR_DEFAULT_MEMATTRS);
hwloc__setup_memattr(&topology->memattrs[HWLOC_MEMATTR_ID_LOCALITY],
(char *) "Locality",
HWLOC_MEMATTR_FLAG_LOWER_FIRST,
HWLOC_IMATTR_FLAG_STATIC_NAME|HWLOC_IMATTR_FLAG_CONVENIENCE);
assert(HWLOC_MEMATTR_ID_BANDWIDTH < NR_DEFAULT_MEMATTRS);
hwloc__setup_memattr(&topology->memattrs[HWLOC_MEMATTR_ID_BANDWIDTH],
(char *) "Bandwidth",
HWLOC_MEMATTR_FLAG_HIGHER_FIRST|HWLOC_MEMATTR_FLAG_NEED_INITIATOR,
HWLOC_IMATTR_FLAG_STATIC_NAME);
assert(HWLOC_MEMATTR_ID_LATENCY < NR_DEFAULT_MEMATTRS);
hwloc__setup_memattr(&topology->memattrs[HWLOC_MEMATTR_ID_LATENCY],
(char *) "Latency",
HWLOC_MEMATTR_FLAG_LOWER_FIRST|HWLOC_MEMATTR_FLAG_NEED_INITIATOR,
HWLOC_IMATTR_FLAG_STATIC_NAME);
topology->nr_memattrs = NR_DEFAULT_MEMATTRS;
}
static void
hwloc__imi_destroy(struct hwloc_internal_memattr_initiator_s *imi)
{
if (imi->initiator.type == HWLOC_LOCATION_TYPE_CPUSET)
hwloc_bitmap_free(imi->initiator.location.cpuset);
}
static void
hwloc__imtg_destroy(struct hwloc_internal_memattr_s *imattr,
struct hwloc_internal_memattr_target_s *imtg)
{
if (imattr->flags & HWLOC_MEMATTR_FLAG_NEED_INITIATOR) {
/* only attributes with initiators may have something to free() in the array */
unsigned k;
for(k=0; k<imtg->nr_initiators; k++)
hwloc__imi_destroy(&imtg->initiators[k]);
}
free(imtg->initiators);
}
void
hwloc_internal_memattrs_destroy(struct hwloc_topology *topology)
{
unsigned id;
for(id=0; id<topology->nr_memattrs; id++) {
struct hwloc_internal_memattr_s *imattr = &topology->memattrs[id];
unsigned j;
for(j=0; j<imattr->nr_targets; j++)
hwloc__imtg_destroy(imattr, &imattr->targets[j]);
free(imattr->targets);
if (!(imattr->iflags & HWLOC_IMATTR_FLAG_STATIC_NAME))
free(imattr->name);
}
free(topology->memattrs);
topology->memattrs = NULL;
topology->nr_memattrs = 0;
}
int
hwloc_internal_memattrs_dup(struct hwloc_topology *new, struct hwloc_topology *old)
{
struct hwloc_tma *tma = new->tma;
struct hwloc_internal_memattr_s *imattrs;
hwloc_memattr_id_t id;
imattrs = hwloc_tma_malloc(tma, old->nr_memattrs * sizeof(*imattrs));
if (!imattrs)
return -1;
new->memattrs = imattrs;
new->nr_memattrs = old->nr_memattrs;
memcpy(imattrs, old->memattrs, old->nr_memattrs * sizeof(*imattrs));
for(id=0; id<old->nr_memattrs; id++) {
struct hwloc_internal_memattr_s *oimattr = &old->memattrs[id];
struct hwloc_internal_memattr_s *nimattr = &imattrs[id];
unsigned j;
assert(oimattr->name);
nimattr->name = hwloc_tma_strdup(tma, oimattr->name);
if (!nimattr->name) {
assert(!tma || !tma->dontfree); /* this tma cannot fail to allocate */
new->nr_memattrs = id;
goto failed;
}
nimattr->iflags &= ~HWLOC_IMATTR_FLAG_STATIC_NAME;
nimattr->iflags &= ~HWLOC_IMATTR_FLAG_CACHE_VALID; /* cache will need refresh */
if (!oimattr->nr_targets)
continue;
nimattr->targets = hwloc_tma_malloc(tma, oimattr->nr_targets * sizeof(*nimattr->targets));
if (!nimattr->targets) {
free(nimattr->name);
new->nr_memattrs = id;
goto failed;
}
memcpy(nimattr->targets, oimattr->targets, oimattr->nr_targets * sizeof(*nimattr->targets));
for(j=0; j<oimattr->nr_targets; j++) {
struct hwloc_internal_memattr_target_s *oimtg = &oimattr->targets[j];
struct hwloc_internal_memattr_target_s *nimtg = &nimattr->targets[j];
unsigned k;
nimtg->obj = NULL; /* cache will need refresh */
if (!oimtg->nr_initiators)
continue;
nimtg->initiators = hwloc_tma_malloc(tma, oimtg->nr_initiators * sizeof(*nimtg->initiators));
if (!nimtg->initiators) {
nimattr->nr_targets = j;
new->nr_memattrs = id+1;
goto failed;
}
memcpy(nimtg->initiators, oimtg->initiators, oimtg->nr_initiators * sizeof(*nimtg->initiators));
for(k=0; k<oimtg->nr_initiators; k++) {
struct hwloc_internal_memattr_initiator_s *oimi = &oimtg->initiators[k];
struct hwloc_internal_memattr_initiator_s *nimi = &nimtg->initiators[k];
if (oimi->initiator.type == HWLOC_LOCATION_TYPE_CPUSET) {
nimi->initiator.location.cpuset = hwloc_bitmap_tma_dup(tma, oimi->initiator.location.cpuset);
if (!nimi->initiator.location.cpuset) {
nimtg->nr_initiators = k;
nimattr->nr_targets = j+1;
new->nr_memattrs = id+1;
goto failed;
}
} else if (oimi->initiator.type == HWLOC_LOCATION_TYPE_OBJECT) {
nimi->initiator.location.object.obj = NULL; /* cache will need refresh */
}
}
}
}
return 0;
failed:
hwloc_internal_memattrs_destroy(new);
return -1;
}
int
hwloc_memattr_get_by_name(hwloc_topology_t topology,
const char *name,
hwloc_memattr_id_t *idp)
{
unsigned id;
for(id=0; id<topology->nr_memattrs; id++) {
if (!strcmp(topology->memattrs[id].name, name)) {
*idp = id;
return 0;
}
}
errno = EINVAL;
return -1;
}
int
hwloc_memattr_get_name(hwloc_topology_t topology,
hwloc_memattr_id_t id,
const char **namep)
{
if (id >= topology->nr_memattrs) {
errno = EINVAL;
return -1;
}
*namep = topology->memattrs[id].name;
return 0;
}
int
hwloc_memattr_get_flags(hwloc_topology_t topology,
hwloc_memattr_id_t id,
unsigned long *flagsp)
{
if (id >= topology->nr_memattrs) {
errno = EINVAL;
return -1;
}
*flagsp = topology->memattrs[id].flags;
return 0;
}
int
hwloc_memattr_register(hwloc_topology_t topology,
const char *_name,
unsigned long flags,
hwloc_memattr_id_t *id)
{
struct hwloc_internal_memattr_s *newattrs;
char *name;
unsigned i;
/* check flags */
if (flags & ~(HWLOC_MEMATTR_FLAG_NEED_INITIATOR|HWLOC_MEMATTR_FLAG_LOWER_FIRST|HWLOC_MEMATTR_FLAG_HIGHER_FIRST)) {
errno = EINVAL;
return -1;
}
if (!(flags & (HWLOC_MEMATTR_FLAG_LOWER_FIRST|HWLOC_MEMATTR_FLAG_HIGHER_FIRST))) {
errno = EINVAL;
return -1;
}
if ((flags & (HWLOC_MEMATTR_FLAG_LOWER_FIRST|HWLOC_MEMATTR_FLAG_HIGHER_FIRST))
== (HWLOC_MEMATTR_FLAG_LOWER_FIRST|HWLOC_MEMATTR_FLAG_HIGHER_FIRST)) {
errno = EINVAL;
return -1;
}
if (!_name) {
errno = EINVAL;
return -1;
}
/* check name isn't already used */
for(i=0; i<topology->nr_memattrs; i++) {
if (!strcmp(_name, topology->memattrs[i].name)) {
errno = EBUSY;
return -1;
}
}
name = strdup(_name);
if (!name)
return -1;
newattrs = realloc(topology->memattrs, (topology->nr_memattrs + 1) * sizeof(*topology->memattrs));
if (!newattrs) {
free(name);
return -1;
}
hwloc__setup_memattr(&newattrs[topology->nr_memattrs],
name, flags, 0);
/* memattr valid when just created */
newattrs[topology->nr_memattrs].iflags |= HWLOC_IMATTR_FLAG_CACHE_VALID;
*id = topology->nr_memattrs;
topology->nr_memattrs++;
topology->memattrs = newattrs;
return 0;
}
/***************************
* Internal Locations
*/
/* return 1 if cpuset/obj matchs the existing initiator location,
* for instance if the cpuset of query is included in the cpuset of existing
*/
static int
match_internal_location(struct hwloc_internal_location_s *iloc,
struct hwloc_internal_memattr_initiator_s *imi)
{
if (iloc->type != imi->initiator.type)
return 0;
switch (iloc->type) {
case HWLOC_LOCATION_TYPE_CPUSET:
return hwloc_bitmap_isincluded(iloc->location.cpuset, imi->initiator.location.cpuset);
case HWLOC_LOCATION_TYPE_OBJECT:
return iloc->location.object.type == imi->initiator.location.object.type
&& iloc->location.object.gp_index == imi->initiator.location.object.gp_index;
default:
return 0;
}
}
static int
to_internal_location(struct hwloc_internal_location_s *iloc,
struct hwloc_location *location)
{
iloc->type = location->type;
switch (location->type) {
case HWLOC_LOCATION_TYPE_CPUSET:
if (!location->location.cpuset || hwloc_bitmap_iszero(location->location.cpuset)) {
errno = EINVAL;
return -1;
}
iloc->location.cpuset = location->location.cpuset;
return 0;
case HWLOC_LOCATION_TYPE_OBJECT:
if (!location->location.object) {
errno = EINVAL;
return -1;
}
iloc->location.object.gp_index = location->location.object->gp_index;
iloc->location.object.type = location->location.object->type;
return 0;
default:
errno = EINVAL;
return -1;
}
}
static int
from_internal_location(struct hwloc_internal_location_s *iloc,
struct hwloc_location *location)
{
location->type = iloc->type;
switch (iloc->type) {
case HWLOC_LOCATION_TYPE_CPUSET:
location->location.cpuset = iloc->location.cpuset;
return 0;
case HWLOC_LOCATION_TYPE_OBJECT:
/* requires the cache to be refreshed */
location->location.object = iloc->location.object.obj;
if (!location->location.object)
return -1;
return 0;
default:
errno = EINVAL;
return -1;
}
}
/************************
* Refreshing
*/
static int
hwloc__imi_refresh(struct hwloc_topology *topology,
struct hwloc_internal_memattr_initiator_s *imi)
{
switch (imi->initiator.type) {
case HWLOC_LOCATION_TYPE_CPUSET: {
hwloc_bitmap_and(imi->initiator.location.cpuset, imi->initiator.location.cpuset, topology->levels[0][0]->cpuset);
if (hwloc_bitmap_iszero(imi->initiator.location.cpuset)) {
hwloc__imi_destroy(imi);
return -1;
}
return 0;
}
case HWLOC_LOCATION_TYPE_OBJECT: {
hwloc_obj_t obj = hwloc_get_obj_by_type_and_gp_index(topology,
imi->initiator.location.object.type,
imi->initiator.location.object.gp_index);
if (!obj) {
hwloc__imi_destroy(imi);
return -1;
}
imi->initiator.location.object.obj = obj;
return 0;
}
default:
assert(0);
}
return -1;
}
static int
hwloc__imtg_refresh(struct hwloc_topology *topology,
struct hwloc_internal_memattr_s *imattr,
struct hwloc_internal_memattr_target_s *imtg)
{
hwloc_obj_t node;
/* no need to refresh convenience memattrs */
assert(!(imattr->iflags & HWLOC_IMATTR_FLAG_CONVENIENCE));
/* check the target object */
if (imtg->gp_index == (hwloc_uint64_t) -1) {
/* only NUMA and PU may work with os_index, and only NUMA is currently used internally */
if (imtg->type == HWLOC_OBJ_NUMANODE)
node = hwloc_get_numanode_obj_by_os_index(topology, imtg->os_index);
else if (imtg->type == HWLOC_OBJ_PU)
node = hwloc_get_pu_obj_by_os_index(topology, imtg->os_index);
else
node = NULL;
} else {
node = hwloc_get_obj_by_type_and_gp_index(topology, imtg->type, imtg->gp_index);
}
if (!node) {
hwloc__imtg_destroy(imattr, imtg);
return -1;
}
/* save the gp_index in case it wasn't initialized yet */
imtg->gp_index = node->gp_index;
/* cache the object */
imtg->obj = node;
if (imattr->flags & HWLOC_MEMATTR_FLAG_NEED_INITIATOR) {
/* check the initiators */
unsigned k, l;
for(k=0, l=0; k<imtg->nr_initiators; k++) {
int err = hwloc__imi_refresh(topology, &imtg->initiators[k]);
if (err < 0)
continue;
if (k != l)
memcpy(&imtg->initiators[l], &imtg->initiators[k], sizeof(*imtg->initiators));
l++;
}
imtg->nr_initiators = l;
if (!imtg->nr_initiators) {
hwloc__imtg_destroy(imattr, imtg);
return -1;
}
}
return 0;
}
static void
hwloc__imattr_refresh(struct hwloc_topology *topology,
struct hwloc_internal_memattr_s *imattr)
{
unsigned j, k;
for(j=0, k=0; j<imattr->nr_targets; j++) {
int ret = hwloc__imtg_refresh(topology, imattr, &imattr->targets[j]);
if (!ret) {
/* target still valid, move it if some former targets were removed */
if (j != k)
memcpy(&imattr->targets[k], &imattr->targets[j], sizeof(*imattr->targets));
k++;
}
}
imattr->nr_targets = k;
imattr->iflags |= HWLOC_IMATTR_FLAG_CACHE_VALID;
}
void
hwloc_internal_memattrs_refresh(struct hwloc_topology *topology)
{
unsigned id;
for(id=0; id<topology->nr_memattrs; id++) {
struct hwloc_internal_memattr_s *imattr = &topology->memattrs[id];
if (imattr->iflags & HWLOC_IMATTR_FLAG_CACHE_VALID)
/* nothing to refresh */
continue;
hwloc__imattr_refresh(topology, imattr);
}
}
void
hwloc_internal_memattrs_need_refresh(struct hwloc_topology *topology)
{
unsigned id;
for(id=0; id<topology->nr_memattrs; id++) {
struct hwloc_internal_memattr_s *imattr = &topology->memattrs[id];
if (imattr->iflags & HWLOC_IMATTR_FLAG_CONVENIENCE)
/* no need to refresh convenience memattrs */
continue;
imattr->iflags &= ~HWLOC_IMATTR_FLAG_CACHE_VALID;
}
}
/********************************
* Targets
*/
static struct hwloc_internal_memattr_target_s *
hwloc__memattr_get_target(struct hwloc_internal_memattr_s *imattr,
hwloc_obj_type_t target_type,
hwloc_uint64_t target_gp_index,
unsigned target_os_index,
int create)
{
struct hwloc_internal_memattr_target_s *news, *new;
unsigned j;
for(j=0; j<imattr->nr_targets; j++) {
if (target_type == imattr->targets[j].type)
if ((target_gp_index != (hwloc_uint64_t)-1 && target_gp_index == imattr->targets[j].gp_index)
|| (target_os_index != (unsigned)-1 && target_os_index == imattr->targets[j].os_index))
return &imattr->targets[j];
}
if (!create)
return NULL;
news = realloc(imattr->targets, (imattr->nr_targets+1)*sizeof(*imattr->targets));
if (!news)
return NULL;
imattr->targets = news;
/* FIXME sort targets? by logical index at the end of load? */
new = &news[imattr->nr_targets];
new->type = target_type;
new->gp_index = target_gp_index;
new->os_index = target_os_index;
/* cached object will be refreshed later on actual access */
new->obj = NULL;
imattr->iflags &= ~HWLOC_IMATTR_FLAG_CACHE_VALID;
/* When setting a value after load(), the caller has the target object
* (and initiator object, if not CPU set). Hence, we could avoid invalidating
* the cache here.
* The overhead of the imattr-wide refresh isn't high enough so far
* to justify making the cache management more complex.
*/
new->nr_initiators = 0;
new->initiators = NULL;
new->noinitiator_value = 0;
imattr->nr_targets++;
return new;
}
static struct hwloc_internal_memattr_initiator_s *
hwloc__memattr_get_initiator_from_location(struct hwloc_internal_memattr_s *imattr,
struct hwloc_internal_memattr_target_s *imtg,
struct hwloc_location *location);
int
hwloc_memattr_get_targets(hwloc_topology_t topology,
hwloc_memattr_id_t id,
struct hwloc_location *initiator,
unsigned long flags,
unsigned *nrp, hwloc_obj_t *targets, hwloc_uint64_t *values)
{
struct hwloc_internal_memattr_s *imattr;
unsigned i, found = 0, max;
if (flags) {
errno = EINVAL;
return -1;
}
if (!nrp || (*nrp && !targets)) {
errno = EINVAL;
return -1;
}
max = *nrp;
if (id >= topology->nr_memattrs) {
errno = EINVAL;
return -1;
}
imattr = &topology->memattrs[id];
if (imattr->iflags & HWLOC_IMATTR_FLAG_CONVENIENCE) {
/* convenience attributes */
for(i=0; ; i++) {
hwloc_obj_t node = hwloc_get_obj_by_type(topology, HWLOC_OBJ_NUMANODE, i);
if (!node)
break;
if (found<max) {
targets[found] = node;
if (values)
values[found] = hwloc__memattr_get_convenience_value(id, node);
}
found++;
}
goto done;
}
/* normal attributes */
if (!(imattr->iflags & HWLOC_IMATTR_FLAG_CACHE_VALID))
hwloc__imattr_refresh(topology, imattr);
for(i=0; i<imattr->nr_targets; i++) {
struct hwloc_internal_memattr_target_s *imtg = &imattr->targets[i];
hwloc_uint64_t value = 0;
if (imattr->flags & HWLOC_MEMATTR_FLAG_NEED_INITIATOR) {
if (initiator) {
/* find a matching initiator */
struct hwloc_internal_memattr_initiator_s *imi = hwloc__memattr_get_initiator_from_location(imattr, imtg, initiator);
if (!imi)
continue;
value = imi->value;
}
} else {
value = imtg->noinitiator_value;
}
if (found<max) {
targets[found] = imtg->obj;
if (values)
values[found] = value;
}
found++;
}
done:
*nrp = found;
return 0;
}
/************************
* Initiators
*/
static struct hwloc_internal_memattr_initiator_s *
hwloc__memattr_target_get_initiator(struct hwloc_internal_memattr_target_s *imtg,
struct hwloc_internal_location_s *iloc,
int create)
{
struct hwloc_internal_memattr_initiator_s *news, *new;
unsigned k;
for(k=0; k<imtg->nr_initiators; k++) {
struct hwloc_internal_memattr_initiator_s *imi = &imtg->initiators[k];
if (match_internal_location(iloc, imi)) {
return imi;
}
}
if (!create)
return NULL;
news = realloc(imtg->initiators, (imtg->nr_initiators+1)*sizeof(*imtg->initiators));
if (!news)
return NULL;
new = &news[imtg->nr_initiators];
new->initiator = *iloc;
if (iloc->type == HWLOC_LOCATION_TYPE_CPUSET) {
new->initiator.location.cpuset = hwloc_bitmap_dup(iloc->location.cpuset);
if (!new->initiator.location.cpuset)
goto out_with_realloc;
}
imtg->nr_initiators++;
imtg->initiators = news;
return new;
out_with_realloc:
imtg->initiators = news;
return NULL;
}
static struct hwloc_internal_memattr_initiator_s *
hwloc__memattr_get_initiator_from_location(struct hwloc_internal_memattr_s *imattr,
struct hwloc_internal_memattr_target_s *imtg,
struct hwloc_location *location)
{
struct hwloc_internal_memattr_initiator_s *imi;
struct hwloc_internal_location_s iloc;
assert(imattr->flags & HWLOC_MEMATTR_FLAG_NEED_INITIATOR);
/* use the initiator value */
if (!location) {
errno = EINVAL;
return NULL;
}
if (to_internal_location(&iloc, location) < 0) {
errno = EINVAL;
return NULL;
}
imi = hwloc__memattr_target_get_initiator(imtg, &iloc, 0);
if (!imi) {
errno = EINVAL;
return NULL;
}
return imi;
}
int
hwloc_memattr_get_initiators(hwloc_topology_t topology,
hwloc_memattr_id_t id,
hwloc_obj_t target_node,
unsigned long flags,
unsigned *nrp, struct hwloc_location *initiators, hwloc_uint64_t *values)
{
struct hwloc_internal_memattr_s *imattr;
struct hwloc_internal_memattr_target_s *imtg;
unsigned i, max;
if (flags) {
errno = EINVAL;
return -1;
}
if (!nrp || (*nrp && !initiators)) {
errno = EINVAL;
return -1;
}
max = *nrp;
if (id >= topology->nr_memattrs) {
errno = EINVAL;
return -1;
}
imattr = &topology->memattrs[id];
if (!(imattr->flags & HWLOC_MEMATTR_FLAG_NEED_INITIATOR)) {
*nrp = 0;
return 0;
}
/* all convenience attributes have no initiators */
assert(!(imattr->iflags & HWLOC_IMATTR_FLAG_CONVENIENCE));
if (!(imattr->iflags & HWLOC_IMATTR_FLAG_CACHE_VALID))
hwloc__imattr_refresh(topology, imattr);
imtg = hwloc__memattr_get_target(imattr, target_node->type, target_node->gp_index, target_node->os_index, 0);
if (!imtg) {
errno = EINVAL;
return -1;
}
for(i=0; i<imtg->nr_initiators && i<max; i++) {
struct hwloc_internal_memattr_initiator_s *imi = &imtg->initiators[i];
int err = from_internal_location(&imi->initiator, &initiators[i]);
assert(!err);
if (values)
/* no need to handle capacity/locality special cases here, those are initiator-less attributes */
values[i] = imi->value;
}
*nrp = imtg->nr_initiators;
return 0;
}
/**************************
* Values
*/
int
hwloc_memattr_get_value(hwloc_topology_t topology,
hwloc_memattr_id_t id,
hwloc_obj_t target_node,
struct hwloc_location *initiator,
unsigned long flags,
hwloc_uint64_t *valuep)
{
struct hwloc_internal_memattr_s *imattr;
struct hwloc_internal_memattr_target_s *imtg;
if (flags) {
errno = EINVAL;
return -1;
}
if (id >= topology->nr_memattrs) {
errno = EINVAL;
return -1;
}
imattr = &topology->memattrs[id];
if (imattr->iflags & HWLOC_IMATTR_FLAG_CONVENIENCE) {
/* convenience attributes */
*valuep = hwloc__memattr_get_convenience_value(id, target_node);
return 0;
}
/* normal attributes */
if (!(imattr->iflags & HWLOC_IMATTR_FLAG_CACHE_VALID))
hwloc__imattr_refresh(topology, imattr);
imtg = hwloc__memattr_get_target(imattr, target_node->type, target_node->gp_index, target_node->os_index, 0);
if (!imtg) {
errno = EINVAL;
return -1;
}
if (imattr->flags & HWLOC_MEMATTR_FLAG_NEED_INITIATOR) {
/* find the initiator and set its value */
struct hwloc_internal_memattr_initiator_s *imi = hwloc__memattr_get_initiator_from_location(imattr, imtg, initiator);
if (!imi)
return -1;
*valuep = imi->value;
} else {
/* get the no-initiator value */
*valuep = imtg->noinitiator_value;
}
return 0;
}
static int
hwloc__internal_memattr_set_value(hwloc_topology_t topology,
hwloc_memattr_id_t id,
hwloc_obj_type_t target_type,
hwloc_uint64_t target_gp_index,
unsigned target_os_index,
struct hwloc_internal_location_s *initiator,
hwloc_uint64_t value)
{
struct hwloc_internal_memattr_s *imattr;
struct hwloc_internal_memattr_target_s *imtg;
if (id >= topology->nr_memattrs) {
/* something bad happened during init */
errno = EINVAL;
return -1;
}
imattr = &topology->memattrs[id];
if (imattr->flags & HWLOC_MEMATTR_FLAG_NEED_INITIATOR) {
/* check given initiator */
if (!initiator) {
errno = EINVAL;
return -1;
}
}
if (imattr->iflags & HWLOC_IMATTR_FLAG_CONVENIENCE) {
/* convenience attributes are read-only */
errno = EINVAL;
return -1;
}
if (topology->is_loaded && !(imattr->iflags & HWLOC_IMATTR_FLAG_CACHE_VALID))
/* don't refresh when adding values during load (some nodes might not be ready yet),
* we'll refresh later
*/
hwloc__imattr_refresh(topology, imattr);
imtg = hwloc__memattr_get_target(imattr, target_type, target_gp_index, target_os_index, 1);
if (!imtg)
return -1;
if (imattr->flags & HWLOC_MEMATTR_FLAG_NEED_INITIATOR) {
/* find/add the initiator and set its value */
// FIXME what if cpuset is larger than an existing one ?
struct hwloc_internal_memattr_initiator_s *imi = hwloc__memattr_target_get_initiator(imtg, initiator, 1);
if (!imi)
return -1;
imi->value = value;
} else {
/* set the no-initiator value */
imtg->noinitiator_value = value;
}
return 0;
}
int
hwloc_internal_memattr_set_value(hwloc_topology_t topology,
hwloc_memattr_id_t id,
hwloc_obj_type_t target_type,
hwloc_uint64_t target_gp_index,
unsigned target_os_index,
struct hwloc_internal_location_s *initiator,
hwloc_uint64_t value)
{
assert(id != HWLOC_MEMATTR_ID_CAPACITY);
assert(id != HWLOC_MEMATTR_ID_LOCALITY);
return hwloc__internal_memattr_set_value(topology, id, target_type, target_gp_index, target_os_index, initiator, value);
}
int
hwloc_memattr_set_value(hwloc_topology_t topology,
hwloc_memattr_id_t id,
hwloc_obj_t target_node,
struct hwloc_location *initiator,
unsigned long flags,
hwloc_uint64_t value)
{
struct hwloc_internal_location_s iloc, *ilocp;
if (flags) {
errno = EINVAL;
return -1;
}
if (initiator) {
if (to_internal_location(&iloc, initiator) < 0) {
errno = EINVAL;
return -1;
}
ilocp = &iloc;
} else {
ilocp = NULL;
}
return hwloc__internal_memattr_set_value(topology, id, target_node->type, target_node->gp_index, target_node->os_index, ilocp, value);
}
/**********************
* Best target
*/
static void
hwloc__update_best_target(hwloc_obj_t *best_obj, hwloc_uint64_t *best_value, int *found,
hwloc_obj_t new_obj, hwloc_uint64_t new_value,
int keep_highest)
{
if (*found) {
if (keep_highest) {
if (new_value <= *best_value)
return;
} else {
if (new_value >= *best_value)
return;
}
}
*best_obj = new_obj;
*best_value = new_value;
*found = 1;
}
int
hwloc_memattr_get_best_target(hwloc_topology_t topology,
hwloc_memattr_id_t id,
struct hwloc_location *initiator,
unsigned long flags,
hwloc_obj_t *bestp, hwloc_uint64_t *valuep)
{
struct hwloc_internal_memattr_s *imattr;
hwloc_uint64_t best_value = 0; /* shutup the compiler */
hwloc_obj_t best = NULL;
int found = 0;
unsigned j;
if (flags) {
errno = EINVAL;
return -1;
}
if (id >= topology->nr_memattrs) {
errno = EINVAL;
return -1;
}
imattr = &topology->memattrs[id];
if (imattr->iflags & HWLOC_IMATTR_FLAG_CONVENIENCE) {
/* convenience attributes */
for(j=0; ; j++) {
hwloc_obj_t node = hwloc_get_obj_by_type(topology, HWLOC_OBJ_NUMANODE, j);
hwloc_uint64_t value;
if (!node)
break;
value = hwloc__memattr_get_convenience_value(id, node);
hwloc__update_best_target(&best, &best_value, &found,
node, value,
imattr->flags & HWLOC_MEMATTR_FLAG_HIGHER_FIRST);
}
goto done;