/*
* Copyright © 2013-2018 Inria. All rights reserved.
* See COPYING in top-level directory.
*/
#include <private/autogen/config.h>
#include <private/private.h>
#include <private/misc.h>
int hwloc_topology_diff_destroy(hwloc_topology_diff_t diff)
{
hwloc_topology_diff_t next;
while (diff) {
next = diff->generic.next;
switch (diff->generic.type) {
default:
break;
case HWLOC_TOPOLOGY_DIFF_OBJ_ATTR:
switch (diff->obj_attr.diff.generic.type) {
default:
break;
case HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_NAME:
case HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_INFO:
free(diff->obj_attr.diff.string.name);
free(diff->obj_attr.diff.string.oldvalue);
free(diff->obj_attr.diff.string.newvalue);
break;
}
break;
}
free(diff);
diff = next;
}
return 0;
}
/************************
* Computing diffs
*/
static void hwloc_append_diff(hwloc_topology_diff_t newdiff,
hwloc_topology_diff_t *firstdiffp,
hwloc_topology_diff_t *lastdiffp)
{
if (*firstdiffp)
(*lastdiffp)->generic.next = newdiff;
else
*firstdiffp = newdiff;
*lastdiffp = newdiff;
newdiff->generic.next = NULL;
}
static int hwloc_append_diff_too_complex(hwloc_obj_t obj1,
hwloc_topology_diff_t *firstdiffp,
hwloc_topology_diff_t *lastdiffp)
{
hwloc_topology_diff_t newdiff;
newdiff = malloc(sizeof(*newdiff));
if (!newdiff)
return -1;
newdiff->too_complex.type = HWLOC_TOPOLOGY_DIFF_TOO_COMPLEX;
newdiff->too_complex.obj_depth = obj1->depth;
newdiff->too_complex.obj_index = obj1->logical_index;
hwloc_append_diff(newdiff, firstdiffp, lastdiffp);
return 0;
}
static int hwloc_append_diff_obj_attr_string(hwloc_obj_t obj,
hwloc_topology_diff_obj_attr_type_t type,
const char *name,
const char *oldvalue,
const char *newvalue,
hwloc_topology_diff_t *firstdiffp,
hwloc_topology_diff_t *lastdiffp)
{
hwloc_topology_diff_t newdiff;
newdiff = malloc(sizeof(*newdiff));
if (!newdiff)
return -1;
newdiff->obj_attr.type = HWLOC_TOPOLOGY_DIFF_OBJ_ATTR;
newdiff->obj_attr.obj_depth = obj->depth;
newdiff->obj_attr.obj_index = obj->logical_index;
newdiff->obj_attr.diff.string.type = type;
newdiff->obj_attr.diff.string.name = name ? strdup(name) : NULL;
newdiff->obj_attr.diff.string.oldvalue = oldvalue ? strdup(oldvalue) : NULL;
newdiff->obj_attr.diff.string.newvalue = newvalue ? strdup(newvalue) : NULL;
hwloc_append_diff(newdiff, firstdiffp, lastdiffp);
return 0;
}
static int hwloc_append_diff_obj_attr_uint64(hwloc_obj_t obj,
hwloc_topology_diff_obj_attr_type_t type,
hwloc_uint64_t idx,
hwloc_uint64_t oldvalue,
hwloc_uint64_t newvalue,
hwloc_topology_diff_t *firstdiffp,
hwloc_topology_diff_t *lastdiffp)
{
hwloc_topology_diff_t newdiff;
newdiff = malloc(sizeof(*newdiff));
if (!newdiff)
return -1;
newdiff->obj_attr.type = HWLOC_TOPOLOGY_DIFF_OBJ_ATTR;
newdiff->obj_attr.obj_depth = obj->depth;
newdiff->obj_attr.obj_index = obj->logical_index;
newdiff->obj_attr.diff.uint64.type = type;
newdiff->obj_attr.diff.uint64.index = idx;
newdiff->obj_attr.diff.uint64.oldvalue = oldvalue;
newdiff->obj_attr.diff.uint64.newvalue = newvalue;
hwloc_append_diff(newdiff, firstdiffp, lastdiffp);
return 0;
}
static int
hwloc_diff_trees(hwloc_topology_t topo1, hwloc_obj_t obj1,
hwloc_topology_t topo2, hwloc_obj_t obj2,
unsigned flags,
hwloc_topology_diff_t *firstdiffp, hwloc_topology_diff_t *lastdiffp)
{
unsigned i;
int err;
hwloc_obj_t child1, child2;
if (obj1->depth != obj2->depth)
goto out_too_complex;
if (obj1->type != obj2->type)
goto out_too_complex;
if ((!obj1->subtype) != (!obj2->subtype)
|| (obj1->subtype && strcmp(obj1->subtype, obj2->subtype)))
goto out_too_complex;
if (obj1->os_index != obj2->os_index)
/* we could allow different os_index for non-PU non-NUMAnode objects
* but it's likely useless anyway */
goto out_too_complex;
#define _SETS_DIFFERENT(_set1, _set2) \
( ( !(_set1) != !(_set2) ) \
|| ( (_set1) && !hwloc_bitmap_isequal(_set1, _set2) ) )
#define SETS_DIFFERENT(_set, _obj1, _obj2) _SETS_DIFFERENT((_obj1)->_set, (_obj2)->_set)
if (SETS_DIFFERENT(cpuset, obj1, obj2)
|| SETS_DIFFERENT(complete_cpuset, obj1, obj2)
|| SETS_DIFFERENT(nodeset, obj1, obj2)
|| SETS_DIFFERENT(complete_nodeset, obj1, obj2))
goto out_too_complex;
/* no need to check logical_index, sibling_rank, symmetric_subtree,
* the parents did it */
/* gp_index don't have to be strictly identical */
if ((!obj1->name) != (!obj2->name)
|| (obj1->name && strcmp(obj1->name, obj2->name))) {
err = hwloc_append_diff_obj_attr_string(obj1,
HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_NAME,
NULL,
obj1->name,
obj2->name,
firstdiffp, lastdiffp);
if (err < 0)
return err;
}
/* type-specific attrs */
switch (obj1->type) {
default:
break;
case HWLOC_OBJ_NUMANODE:
if (obj1->attr->numanode.local_memory != obj2->attr->numanode.local_memory) {
err = hwloc_append_diff_obj_attr_uint64(obj1,
HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_SIZE,
0,
obj1->attr->numanode.local_memory,
obj2->attr->numanode.local_memory,
firstdiffp, lastdiffp);
if (err < 0)
return err;
}
/* ignore memory page_types */
break;
case HWLOC_OBJ_L1CACHE:
case HWLOC_OBJ_L2CACHE:
case HWLOC_OBJ_L3CACHE:
case HWLOC_OBJ_L4CACHE:
case HWLOC_OBJ_L5CACHE:
case HWLOC_OBJ_L1ICACHE:
case HWLOC_OBJ_L2ICACHE:
case HWLOC_OBJ_L3ICACHE:
if (memcmp(obj1->attr, obj2->attr, sizeof(obj1->attr->cache)))
goto out_too_complex;
break;
case HWLOC_OBJ_GROUP:
if (memcmp(obj1->attr, obj2->attr, sizeof(obj1->attr->group)))
goto out_too_complex;
break;
case HWLOC_OBJ_PCI_DEVICE:
if (memcmp(obj1->attr, obj2->attr, sizeof(obj1->attr->pcidev)))
goto out_too_complex;
break;
case HWLOC_OBJ_BRIDGE:
if (memcmp(obj1->attr, obj2->attr, sizeof(obj1->attr->bridge)))
goto out_too_complex;
break;
case HWLOC_OBJ_OS_DEVICE:
if (memcmp(obj1->attr, obj2->attr, sizeof(obj1->attr->osdev)))
goto out_too_complex;
break;
}
/* infos */
if (obj1->infos_count != obj2->infos_count)
goto out_too_complex;
for(i=0; i<obj1->infos_count; i++) {
struct hwloc_info_s *info1 = &obj1->infos[i], *info2 = &obj2->infos[i];
if (strcmp(info1->name, info2->name))
goto out_too_complex;
if (strcmp(obj1->infos[i].value, obj2->infos[i].value)) {
err = hwloc_append_diff_obj_attr_string(obj1,
HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_INFO,
info1->name,
info1->value,
info2->value,
firstdiffp, lastdiffp);
if (err < 0)
return err;
}
}
/* ignore userdata */
/* children */
for(child1 = obj1->first_child, child2 = obj2->first_child;
child1 != NULL && child2 != NULL;
child1 = child1->next_sibling, child2 = child2->next_sibling) {
err = hwloc_diff_trees(topo1, child1,
topo2, child2,
flags,
firstdiffp, lastdiffp);
if (err < 0)
return err;
}
if (child1 || child2)
goto out_too_complex;
/* memory children */
for(child1 = obj1->memory_first_child, child2 = obj2->memory_first_child;
child1 != NULL && child2 != NULL;
child1 = child1->next_sibling, child2 = child2->next_sibling) {
err = hwloc_diff_trees(topo1, child1,
topo2, child2,
flags,
firstdiffp, lastdiffp);
if (err < 0)
return err;
}
if (child1 || child2)
goto out_too_complex;
/* I/O children */
for(child1 = obj1->io_first_child, child2 = obj2->io_first_child;
child1 != NULL && child2 != NULL;
child1 = child1->next_sibling, child2 = child2->next_sibling) {
err = hwloc_diff_trees(topo1, child1,
topo2, child2,
flags,
firstdiffp, lastdiffp);
if (err < 0)
return err;
}
if (child1 || child2)
goto out_too_complex;
/* misc children */
for(child1 = obj1->misc_first_child, child2 = obj2->misc_first_child;
child1 != NULL && child2 != NULL;
child1 = child1->next_sibling, child2 = child2->next_sibling) {
err = hwloc_diff_trees(topo1, child1,
topo2, child2,
flags,
firstdiffp, lastdiffp);
if (err < 0)
return err;
}
if (child1 || child2)
goto out_too_complex;
return 0;
out_too_complex:
hwloc_append_diff_too_complex(obj1, firstdiffp, lastdiffp);
return 0;
}
int hwloc_topology_diff_build(hwloc_topology_t topo1,
hwloc_topology_t topo2,
unsigned long flags,
hwloc_topology_diff_t *diffp)
{
hwloc_topology_diff_t lastdiff, tmpdiff;
struct hwloc_internal_distances_s *dist1, *dist2;
unsigned i;
int err;
if (!topo1->is_loaded || !topo2->is_loaded) {
errno = EINVAL;
return -1;
}
if (flags != 0) {
errno = EINVAL;
return -1;
}
*diffp = NULL;
err = hwloc_diff_trees(topo1, hwloc_get_root_obj(topo1),
topo2, hwloc_get_root_obj(topo2),
flags,
diffp, &lastdiff);
if (!err) {
tmpdiff = *diffp;
while (tmpdiff) {
if (tmpdiff->generic.type == HWLOC_TOPOLOGY_DIFF_TOO_COMPLEX) {
err = 1;
break;
}
tmpdiff = tmpdiff->generic.next;
}
}
if (!err) {
if (SETS_DIFFERENT(allowed_cpuset, topo1, topo2)
|| SETS_DIFFERENT(allowed_nodeset, topo1, topo2)) {
hwloc_append_diff_too_complex(hwloc_get_root_obj(topo1), diffp, &lastdiff);
err = 1;
}
}
if (!err) {
/* distances */
hwloc_internal_distances_refresh(topo1);
hwloc_internal_distances_refresh(topo2);
dist1 = topo1->first_dist;
dist2 = topo2->first_dist;
while (dist1 || dist2) {
if (!!dist1 != !!dist2) {
hwloc_append_diff_too_complex(hwloc_get_root_obj(topo1), diffp, &lastdiff);
err = 1;
break;
}
if (dist1->type != dist2->type
|| dist1->nbobjs != dist2->nbobjs
|| dist1->kind != dist2->kind
|| memcmp(dist1->values, dist2->values, dist1->nbobjs * dist1->nbobjs * sizeof(*dist1->values))) {
hwloc_append_diff_too_complex(hwloc_get_root_obj(topo1), diffp, &lastdiff);
err = 1;
break;
}
for(i=0; i<dist1->nbobjs; i++)
/* gp_index isn't enforced above. so compare logical_index instead, which is enforced. requires distances refresh() above */
if (dist1->objs[i]->logical_index != dist2->objs[i]->logical_index) {
hwloc_append_diff_too_complex(hwloc_get_root_obj(topo1), diffp, &lastdiff);
err = 1;
break;
}
dist1 = dist1->next;
dist2 = dist2->next;
}
}
return err;
}
/********************
* Applying diffs
*/
static int
hwloc_apply_diff_one(hwloc_topology_t topology,
hwloc_topology_diff_t diff,
unsigned long flags)
{
int reverse = !!(flags & HWLOC_TOPOLOGY_DIFF_APPLY_REVERSE);
switch (diff->generic.type) {
case HWLOC_TOPOLOGY_DIFF_OBJ_ATTR: {
struct hwloc_topology_diff_obj_attr_s *obj_attr = &diff->obj_attr;
hwloc_obj_t obj = hwloc_get_obj_by_depth(topology, obj_attr->obj_depth, obj_attr->obj_index);
if (!obj)
return -1;
switch (obj_attr->diff.generic.type) {
case HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_SIZE: {
hwloc_obj_t tmpobj;
hwloc_uint64_t oldvalue = reverse ? obj_attr->diff.uint64.newvalue : obj_attr->diff.uint64.oldvalue;
hwloc_uint64_t newvalue = reverse ? obj_attr->diff.uint64.oldvalue : obj_attr->diff.uint64.newvalue;
hwloc_uint64_t valuediff = newvalue - oldvalue;
if (obj->type != HWLOC_OBJ_NUMANODE)
return -1;
if (obj->attr->numanode.local_memory != oldvalue)
return -1;
obj->attr->numanode.local_memory = newvalue;
tmpobj = obj;
while (tmpobj) {
tmpobj->total_memory += valuediff;
tmpobj = tmpobj->parent;
}
break;
}
case HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_NAME: {
const char *oldvalue = reverse ? obj_attr->diff.string.newvalue : obj_attr->diff.string.oldvalue;
const char *newvalue = reverse ? obj_attr->diff.string.oldvalue : obj_attr->diff.string.newvalue;
if (!obj->name || strcmp(obj->name, oldvalue))
return -1;
free(obj->name);
obj->name = strdup(newvalue);
break;
}
case HWLOC_TOPOLOGY_DIFF_OBJ_ATTR_INFO: {
const char *name = obj_attr->diff.string.name;
const char *oldvalue = reverse ? obj_attr->diff.string.newvalue : obj_attr->diff.string.oldvalue;
const char *newvalue = reverse ? obj_attr->diff.string.oldvalue : obj_attr->diff.string.newvalue;
unsigned i;
int found = 0;
for(i=0; i<obj->infos_count; i++) {
struct hwloc_info_s *info = &obj->infos[i];
if (!strcmp(info->name, name)
&& !strcmp(info->value, oldvalue)) {
free(info->value);
info->value = strdup(newvalue);
found = 1;
break;
}
}
if (!found)
return -1;
break;
}
default:
return -1;
}
break;
}
default:
return -1;
}
return 0;
}
int hwloc_topology_diff_apply(hwloc_topology_t topology,
hwloc_topology_diff_t diff,
unsigned long flags)
{
hwloc_topology_diff_t tmpdiff, tmpdiff2;
int err, nr;
if (!topology->is_loaded) {
errno = EINVAL;
return -1;
}
if (flags & ~HWLOC_TOPOLOGY_DIFF_APPLY_REVERSE) {
errno = EINVAL;
return -1;
}
tmpdiff = diff;
nr = 0;
while (tmpdiff) {
nr++;
err = hwloc_apply_diff_one(topology, tmpdiff, flags);
if (err < 0)
goto cancel;
tmpdiff = tmpdiff->generic.next;
}
return 0;
cancel:
tmpdiff2 = tmpdiff;
tmpdiff = diff;
while (tmpdiff != tmpdiff2) {
hwloc_apply_diff_one(topology, tmpdiff, flags ^ HWLOC_TOPOLOGY_DIFF_APPLY_REVERSE);
tmpdiff = tmpdiff->generic.next;
}
errno = EINVAL;
return -nr; /* return the index (starting at 1) of the first element that couldn't be applied */
}