hwlocality_helper_find_cache - Man Page

int hwloc_get_cache_type_depth (hwloc_topology_t topology, unsigned cachelevel, hwloc_obj_cache_type_t cachetype)
hwloc_obj_t hwloc_get_cache_covering_cpuset (hwloc_topology_t topology, hwloc_const_cpuset_t set)
hwloc_obj_t hwloc_get_shared_cache_covering_obj (hwloc_topology_t topology, hwloc_obj_t obj)

Get the first data (or unified) cache covering a cpuset set​.

Returns

a covering cache, or NULL if no cache matches​.

Find the depth of cache objects matching cache level and type​. Return the depth of the topology level that contains cache objects whose attributes match cachelevel and cachetype​.

This function is identical to calling hwloc_get_type_depth() with the corresponding type such as HWLOC_OBJ_L1ICACHE, except that it may also return a Unified cache when looking for an instruction cache​.

Returns

the depth of the unique matching unified cache level is returned if cachetype is HWLOC_OBJ_CACHE_UNIFIED​.

the depth of either a matching cache level or a unified cache level if cachetype is HWLOC_OBJ_CACHE_DATA or HWLOC_OBJ_CACHE_INSTRUCTION​.

the depth of the matching level if cachetype is -1 but only one level matches​.

HWLOC_TYPE_DEPTH_MULTIPLE if cachetype is -1 but multiple levels match​.

HWLOC_TYPE_DEPTH_UNKNOWN if no cache level matches​.

Get the first data (or unified) cache shared between an object and somebody else​.

Returns

a shared cache​.

NULL if no cache matches or if an invalid object is given (e​.g​. I/O object)​.