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.TH "hwlocality_helper_find_cache" 3 "Version 2.12.0" "Hardware Locality (hwloc)" \" -*- nroff -*-
.ad l
.nh
.SH NAME
hwlocality_helper_find_cache \- Looking at Cache Objects
.SH SYNOPSIS
.br
.PP
.SS "Functions"
.in +1c
.ti -1c
.RI "int \fBhwloc_get_cache_type_depth\fP (\fBhwloc_topology_t\fP topology, unsigned cachelevel, \fBhwloc_obj_cache_type_t\fP cachetype)"
.br
.ti -1c
.RI "\fBhwloc_obj_t\fP \fBhwloc_get_cache_covering_cpuset\fP (\fBhwloc_topology_t\fP topology, \fBhwloc_const_cpuset_t\fP set)"
.br
.ti -1c
.RI "\fBhwloc_obj_t\fP \fBhwloc_get_shared_cache_covering_obj\fP (\fBhwloc_topology_t\fP topology, \fBhwloc_obj_t\fP obj)"
.br
.in -1c
.SH "Detailed Description"
.PP
.SH "Function Documentation"
.PP
.SS "\fBhwloc_obj_t\fP hwloc_get_cache_covering_cpuset (\fBhwloc_topology_t\fP topology, \fBhwloc_const_cpuset_t\fP set)\fC [inline]\fP"
.PP
Get the first data (or unified) cache covering a cpuset \fCset\fP\&.
.PP
\fBReturns\fP
.RS 4
a covering cache, or \fCNULL\fP if no cache matches\&.
.RE
.PP
.SS "int hwloc_get_cache_type_depth (\fBhwloc_topology_t\fP topology, unsigned cachelevel, \fBhwloc_obj_cache_type_t\fP cachetype)\fC [inline]\fP"
.PP
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 \fCcachelevel\fP and \fCcachetype\fP\&.
.PP
This function is identical to calling \fBhwloc_get_type_depth()\fP with the corresponding type such as \fBHWLOC_OBJ_L1ICACHE\fP, except that it may also return a Unified cache when looking for an instruction cache\&.
.PP
\fBReturns\fP
.RS 4
the depth of the unique matching unified cache level is returned if \fCcachetype\fP is \fBHWLOC_OBJ_CACHE_UNIFIED\fP\&.
.PP
the depth of either a matching cache level or a unified cache level if \fCcachetype\fP is \fBHWLOC_OBJ_CACHE_DATA\fP or \fBHWLOC_OBJ_CACHE_INSTRUCTION\fP\&.
.PP
the depth of the matching level if \fCcachetype\fP is \fC-1\fP but only one level matches\&.
.PP
\fBHWLOC_TYPE_DEPTH_MULTIPLE\fP if \fCcachetype\fP is \fC-1\fP but multiple levels match\&.
.PP
\fBHWLOC_TYPE_DEPTH_UNKNOWN\fP if no cache level matches\&.
.RE
.PP
.SS "\fBhwloc_obj_t\fP hwloc_get_shared_cache_covering_obj (\fBhwloc_topology_t\fP topology, \fBhwloc_obj_t\fP obj)\fC [inline]\fP"
.PP
Get the first data (or unified) cache shared between an object and somebody else\&.
.PP
\fBReturns\fP
.RS 4
a shared cache\&.
.PP
\fCNULL\fP if no cache matches or if an invalid object is given (e\&.g\&. I/O object)\&.
.RE
.PP
.SH "Author"
.PP
Generated automatically by Doxygen for Hardware Locality (hwloc) from the source code\&.
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