Hardware Locality (hwloc)  v2.4-20210113.2330.git2a1919b1
hwloc.h
1 /*
2  * Copyright © 2009 CNRS
3  * Copyright © 2009-2020 Inria. All rights reserved.
4  * Copyright © 2009-2012 Université Bordeaux
5  * Copyright © 2009-2020 Cisco Systems, Inc. All rights reserved.
6  * See COPYING in top-level directory.
7  */
8 
9 /*=====================================================================
10  * PLEASE GO READ THE DOCUMENTATION!
11  * ------------------------------------------------
12  * $tarball_directory/doc/doxygen-doc/
13  * or
14  * https://www.open-mpi.org/projects/hwloc/doc/
15  *=====================================================================
16  *
17  * FAIR WARNING: Do NOT expect to be able to figure out all the
18  * subtleties of hwloc by simply reading function prototypes and
19  * constant descrptions here in this file.
20  *
21  * Hwloc has wonderful documentation in both PDF and HTML formats for
22  * your reading pleasure. The formal documentation explains a LOT of
23  * hwloc-specific concepts, provides definitions, and discusses the
24  * "big picture" for many of the things that you'll find here in this
25  * header file.
26  *
27  * The PDF/HTML documentation was generated via Doxygen; much of what
28  * you'll see in there is also here in this file. BUT THERE IS A LOT
29  * THAT IS IN THE PDF/HTML THAT IS ***NOT*** IN hwloc.h!
30  *
31  * There are entire paragraph-length descriptions, discussions, and
32  * pretty prictures to explain subtle corner cases, provide concrete
33  * examples, etc.
34  *
35  * Please, go read the documentation. :-)
36  *
37  * Moreover there are several examples of hwloc use under doc/examples
38  * in the source tree.
39  *
40  *=====================================================================*/
41 
53 #ifndef HWLOC_H
54 #define HWLOC_H
55 
56 #include "hwloc/autogen/config.h"
57 
58 #include <sys/types.h>
59 #include <stdio.h>
60 #include <string.h>
61 #include <limits.h>
62 
63 /*
64  * Symbol transforms
65  */
66 #include "hwloc/rename.h"
67 
68 /*
69  * Bitmap definitions
70  */
71 
72 #include "hwloc/bitmap.h"
73 
74 
75 #ifdef __cplusplus
76 extern "C" {
77 #endif
78 
79 
96 #define HWLOC_API_VERSION 0x00020400
97 
102 HWLOC_DECLSPEC unsigned hwloc_get_api_version(void);
103 
105 #define HWLOC_COMPONENT_ABI 7
106 
143 
161 
176 typedef enum {
177 
179 #define HWLOC_OBJ_TYPE_MIN HWLOC_OBJ_MACHINE /* Sentinel value */
180 
322  HWLOC_OBJ_TYPE_MAX
324 
331 
337 
356 
376 HWLOC_DECLSPEC int hwloc_compare_types (hwloc_obj_type_t type1, hwloc_obj_type_t type2) __hwloc_attribute_const;
377 
379 #define HWLOC_TYPE_UNORDERED INT_MAX
380 
389 union hwloc_obj_attr_u;
390 
395 struct hwloc_obj {
396  /* physical information */
398  char *subtype;
400  unsigned os_index;
405 #define HWLOC_UNKNOWN_INDEX (unsigned)-1
406 
407  char *name;
412  hwloc_uint64_t total_memory;
417  /* global position */
418  int depth;
433  unsigned logical_index;
440  /* cousins are all objects of the same type (and depth) across the entire topology */
444  /* children of the same parent are siblings, even if they may have different type and depth */
445  struct hwloc_obj *parent;
446  unsigned sibling_rank;
451  unsigned arity;
455  struct hwloc_obj **children;
471  unsigned memory_arity;
489  unsigned io_arity;
501  unsigned misc_arity;
510  /* cpusets and nodesets */
577  struct hwloc_info_s *infos;
578  unsigned infos_count;
580  /* misc */
581  void *userdata;
586  hwloc_uint64_t gp_index;
591 };
595 typedef struct hwloc_obj * hwloc_obj_t;
596 
601  hwloc_uint64_t local_memory;
602  unsigned page_types_len;
609  hwloc_uint64_t size;
610  hwloc_uint64_t count;
611  } * page_types;
612  } numanode;
613 
616  hwloc_uint64_t size;
617  unsigned depth;
618  unsigned linesize;
622  } cache;
625  unsigned depth;
627  unsigned kind;
628  unsigned subkind;
629  unsigned char dont_merge;
630  } group;
633 #ifndef HWLOC_HAVE_32BITS_PCI_DOMAIN
634  unsigned short domain; /* Only 16bits PCI domains are supported by default */
635 #else
636  unsigned int domain; /* 32bits PCI domain support break the library ABI, hence it's disabled by default */
637 #endif
638  unsigned char bus, dev, func;
639  unsigned short class_id;
641  unsigned char revision;
642  float linkspeed; /* in GB/s */
643  } pcidev;
646  union {
648  } upstream;
650  union {
651  struct {
652 #ifndef HWLOC_HAVE_32BITS_PCI_DOMAIN
653  unsigned short domain; /* Only 16bits PCI domains are supported by default */
654 #else
655  unsigned int domain; /* 32bits PCI domain support break the library ABI, hence it's disabled by default */
656 #endif
658  } pci;
659  } downstream;
661  unsigned depth;
662  } bridge;
666  } osdev;
667 };
668 
673 struct hwloc_info_s {
674  char *name;
675  char *value;
676 };
677 
686 struct hwloc_topology;
691 typedef struct hwloc_topology * hwloc_topology_t;
692 
699 HWLOC_DECLSPEC int hwloc_topology_init (hwloc_topology_t *topologyp);
700 
721 HWLOC_DECLSPEC int hwloc_topology_load(hwloc_topology_t topology);
722 
727 HWLOC_DECLSPEC void hwloc_topology_destroy (hwloc_topology_t topology);
728 
739 HWLOC_DECLSPEC int hwloc_topology_dup(hwloc_topology_t *newtopology, hwloc_topology_t oldtopology);
740 
758 HWLOC_DECLSPEC int hwloc_topology_abi_check(hwloc_topology_t topology);
759 
771 HWLOC_DECLSPEC void hwloc_topology_check(hwloc_topology_t topology);
772 
793 HWLOC_DECLSPEC int hwloc_topology_get_depth(hwloc_topology_t __hwloc_restrict topology) __hwloc_attribute_pure;
794 
818 HWLOC_DECLSPEC int hwloc_get_type_depth (hwloc_topology_t topology, hwloc_obj_type_t type);
819 
829 };
830 
850 HWLOC_DECLSPEC int hwloc_get_memory_parents_depth (hwloc_topology_t topology);
851 
865 static __hwloc_inline int
866 hwloc_get_type_or_below_depth (hwloc_topology_t topology, hwloc_obj_type_t type) __hwloc_attribute_pure;
867 
881 static __hwloc_inline int
882 hwloc_get_type_or_above_depth (hwloc_topology_t topology, hwloc_obj_type_t type) __hwloc_attribute_pure;
883 
891 HWLOC_DECLSPEC hwloc_obj_type_t hwloc_get_depth_type (hwloc_topology_t topology, int depth) __hwloc_attribute_pure;
892 
895 HWLOC_DECLSPEC unsigned hwloc_get_nbobjs_by_depth (hwloc_topology_t topology, int depth) __hwloc_attribute_pure;
896 
902 static __hwloc_inline int
903 hwloc_get_nbobjs_by_type (hwloc_topology_t topology, hwloc_obj_type_t type) __hwloc_attribute_pure;
904 
909 static __hwloc_inline hwloc_obj_t
910 hwloc_get_root_obj (hwloc_topology_t topology) __hwloc_attribute_pure;
911 
913 HWLOC_DECLSPEC hwloc_obj_t hwloc_get_obj_by_depth (hwloc_topology_t topology, int depth, unsigned idx) __hwloc_attribute_pure;
914 
921 static __hwloc_inline hwloc_obj_t
922 hwloc_get_obj_by_type (hwloc_topology_t topology, hwloc_obj_type_t type, unsigned idx) __hwloc_attribute_pure;
923 
928 static __hwloc_inline hwloc_obj_t
929 hwloc_get_next_obj_by_depth (hwloc_topology_t topology, int depth, hwloc_obj_t prev);
930 
937 static __hwloc_inline hwloc_obj_t
939  hwloc_obj_t prev);
940 
957 HWLOC_DECLSPEC const char * hwloc_obj_type_string (hwloc_obj_type_t type) __hwloc_attribute_const;
958 
976 HWLOC_DECLSPEC int hwloc_obj_type_snprintf(char * __hwloc_restrict string, size_t size,
977  hwloc_obj_t obj,
978  int verbose);
979 
991 HWLOC_DECLSPEC int hwloc_obj_attr_snprintf(char * __hwloc_restrict string, size_t size,
992  hwloc_obj_t obj, const char * __hwloc_restrict separator,
993  int verbose);
994 
1018 HWLOC_DECLSPEC int hwloc_type_sscanf(const char *string,
1019  hwloc_obj_type_t *typep,
1020  union hwloc_obj_attr_u *attrp, size_t attrsize);
1021 
1043 HWLOC_DECLSPEC int hwloc_type_sscanf_as_depth(const char *string,
1044  hwloc_obj_type_t *typep,
1045  hwloc_topology_t topology, int *depthp);
1046 
1062 static __hwloc_inline const char *
1063 hwloc_obj_get_info_by_name(hwloc_obj_t obj, const char *name) __hwloc_attribute_pure;
1064 
1081 HWLOC_DECLSPEC int hwloc_obj_add_info(hwloc_obj_t obj, const char *name, const char *value);
1082 
1154 typedef enum {
1158 
1162 
1187 
1205 
1211 HWLOC_DECLSPEC int hwloc_set_cpubind(hwloc_topology_t topology, hwloc_const_cpuset_t set, int flags);
1212 
1218 HWLOC_DECLSPEC int hwloc_get_cpubind(hwloc_topology_t topology, hwloc_cpuset_t set, int flags);
1219 
1231 HWLOC_DECLSPEC int hwloc_set_proc_cpubind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_cpuset_t set, int flags);
1232 
1244 HWLOC_DECLSPEC int hwloc_get_proc_cpubind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags);
1245 
1246 #ifdef hwloc_thread_t
1247 
1254 HWLOC_DECLSPEC int hwloc_set_thread_cpubind(hwloc_topology_t topology, hwloc_thread_t thread, hwloc_const_cpuset_t set, int flags);
1255 #endif
1256 
1257 #ifdef hwloc_thread_t
1258 
1265 HWLOC_DECLSPEC int hwloc_get_thread_cpubind(hwloc_topology_t topology, hwloc_thread_t thread, hwloc_cpuset_t set, int flags);
1266 #endif
1267 
1281 HWLOC_DECLSPEC int hwloc_get_last_cpu_location(hwloc_topology_t topology, hwloc_cpuset_t set, int flags);
1282 
1299 HWLOC_DECLSPEC int hwloc_get_proc_last_cpu_location(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags);
1300 
1380 typedef enum {
1389 
1400 
1404 
1413 
1420 
1429 
1443 typedef enum {
1449 
1454 
1462 
1468 
1481 
1493 
1509 HWLOC_DECLSPEC int hwloc_set_membind(hwloc_topology_t topology, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags);
1510 
1555 HWLOC_DECLSPEC int hwloc_get_membind(hwloc_topology_t topology, hwloc_bitmap_t set, hwloc_membind_policy_t * policy, int flags);
1556 
1569 HWLOC_DECLSPEC int hwloc_set_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags);
1570 
1610 HWLOC_DECLSPEC int hwloc_get_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_bitmap_t set, hwloc_membind_policy_t * policy, int flags);
1611 
1622 HWLOC_DECLSPEC int hwloc_set_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags);
1623 
1651 HWLOC_DECLSPEC int hwloc_get_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_bitmap_t set, hwloc_membind_policy_t * policy, int flags);
1652 
1672 HWLOC_DECLSPEC int hwloc_get_area_memlocation(hwloc_topology_t topology, const void *addr, size_t len, hwloc_bitmap_t set, int flags);
1673 
1681 HWLOC_DECLSPEC void *hwloc_alloc(hwloc_topology_t topology, size_t len);
1682 
1697 HWLOC_DECLSPEC void *hwloc_alloc_membind(hwloc_topology_t topology, size_t len, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags) __hwloc_attribute_malloc;
1698 
1708 static __hwloc_inline void *
1709 hwloc_alloc_membind_policy(hwloc_topology_t topology, size_t len, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags) __hwloc_attribute_malloc;
1710 
1714 HWLOC_DECLSPEC int hwloc_free(hwloc_topology_t topology, void *addr, size_t len);
1715 
1752 HWLOC_DECLSPEC int hwloc_topology_set_pid(hwloc_topology_t __hwloc_restrict topology, hwloc_pid_t pid);
1753 
1782 HWLOC_DECLSPEC int hwloc_topology_set_synthetic(hwloc_topology_t __hwloc_restrict topology, const char * __hwloc_restrict description);
1783 
1810 HWLOC_DECLSPEC int hwloc_topology_set_xml(hwloc_topology_t __hwloc_restrict topology, const char * __hwloc_restrict xmlpath);
1811 
1838 HWLOC_DECLSPEC int hwloc_topology_set_xmlbuffer(hwloc_topology_t __hwloc_restrict topology, const char * __hwloc_restrict buffer, int size);
1839 
1847 };
1848 
1863 HWLOC_DECLSPEC int hwloc_topology_set_components(hwloc_topology_t __hwloc_restrict topology, unsigned long flags, const char * __hwloc_restrict name);
1864 
1905 
1925 
1946 
1970 };
1971 
1981 HWLOC_DECLSPEC int hwloc_topology_set_flags (hwloc_topology_t topology, unsigned long flags);
1982 
1989 HWLOC_DECLSPEC unsigned long hwloc_topology_get_flags (hwloc_topology_t topology);
1990 
1998 HWLOC_DECLSPEC int hwloc_topology_is_thissystem(hwloc_topology_t __hwloc_restrict topology) __hwloc_attribute_pure;
1999 
2003  unsigned char pu;
2005  unsigned char numa;
2007  unsigned char numa_memory;
2009  unsigned char disallowed_pu;
2011  unsigned char disallowed_numa;
2013  unsigned char cpukind_efficiency;
2014 };
2015 
2023  unsigned char set_thisproc_cpubind;
2025  unsigned char get_thisproc_cpubind;
2027  unsigned char set_proc_cpubind;
2029  unsigned char get_proc_cpubind;
2031  unsigned char set_thisthread_cpubind;
2033  unsigned char get_thisthread_cpubind;
2035  unsigned char set_thread_cpubind;
2037  unsigned char get_thread_cpubind;
2044 };
2045 
2053  unsigned char set_thisproc_membind;
2055  unsigned char get_thisproc_membind;
2057  unsigned char set_proc_membind;
2059  unsigned char get_proc_membind;
2061  unsigned char set_thisthread_membind;
2063  unsigned char get_thisthread_membind;
2065  unsigned char set_area_membind;
2067  unsigned char get_area_membind;
2069  unsigned char alloc_membind;
2071  unsigned char firsttouch_membind;
2073  unsigned char bind_membind;
2075  unsigned char interleave_membind;
2077  unsigned char nexttouch_membind;
2079  unsigned char migrate_membind;
2081  unsigned char get_area_memlocation;
2082 };
2083 
2088  unsigned char imported_support;
2089 };
2090 
2102 };
2103 
2125 HWLOC_DECLSPEC const struct hwloc_topology_support *hwloc_topology_get_support(hwloc_topology_t __hwloc_restrict topology);
2126 
2143 
2151 
2165 
2180 };
2181 
2184 HWLOC_DECLSPEC int hwloc_topology_set_type_filter(hwloc_topology_t topology, hwloc_obj_type_t type, enum hwloc_type_filter_e filter);
2185 
2188 HWLOC_DECLSPEC int hwloc_topology_get_type_filter(hwloc_topology_t topology, hwloc_obj_type_t type, enum hwloc_type_filter_e *filter);
2189 
2194 HWLOC_DECLSPEC int hwloc_topology_set_all_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter);
2195 
2200 HWLOC_DECLSPEC int hwloc_topology_set_cache_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter);
2201 
2206 HWLOC_DECLSPEC int hwloc_topology_set_icache_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter);
2207 
2210 HWLOC_DECLSPEC int hwloc_topology_set_io_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter);
2211 
2222 HWLOC_DECLSPEC void hwloc_topology_set_userdata(hwloc_topology_t topology, const void *userdata);
2223 
2229 HWLOC_DECLSPEC void * hwloc_topology_get_userdata(hwloc_topology_t topology);
2230 
2247 
2253 
2260 
2266 
2272 };
2273 
2298 HWLOC_DECLSPEC int hwloc_topology_restrict(hwloc_topology_t __hwloc_restrict topology, hwloc_const_bitmap_t set, unsigned long flags);
2299 
2307 
2316 
2320 };
2321 
2337 HWLOC_DECLSPEC int hwloc_topology_allow(hwloc_topology_t __hwloc_restrict topology, hwloc_const_cpuset_t cpuset, hwloc_const_nodeset_t nodeset, unsigned long flags);
2338 
2360 HWLOC_DECLSPEC hwloc_obj_t hwloc_topology_insert_misc_object(hwloc_topology_t topology, hwloc_obj_t parent, const char *name);
2361 
2383 
2421 
2431 HWLOC_DECLSPEC int hwloc_obj_add_other_obj_sets(hwloc_obj_t dst, hwloc_obj_t src);
2432 
2447 HWLOC_DECLSPEC int hwloc_topology_refresh(hwloc_topology_t topology);
2448 
2453 #ifdef __cplusplus
2454 } /* extern "C" */
2455 #endif
2456 
2457 
2458 /* high-level helpers */
2459 #include "hwloc/helper.h"
2460 
2461 /* inline code of some functions above */
2462 #include "hwloc/inlines.h"
2463 
2464 /* memory attributes */
2465 #include "hwloc/memattrs.h"
2466 
2467 /* kinds of CPU cores */
2468 #include "hwloc/cpukinds.h"
2469 
2470 /* exporting to XML or synthetic */
2471 #include "hwloc/export.h"
2472 
2473 /* distances */
2474 #include "hwloc/distances.h"
2475 
2476 /* topology diffs */
2477 #include "hwloc/diff.h"
2478 
2479 /* deprecated headers */
2480 #include "hwloc/deprecated.h"
2481 
2482 #endif /* HWLOC_H */
int hwloc_obj_add_info(hwloc_obj_t obj, const char *name, const char *value)
Add the given info name and value pair to the given object.
unsigned short vendor_id
Definition: hwloc.h:640
unsigned char get_proc_membind
Definition: hwloc.h:2059
unsigned misc_arity
Number of Misc children. These children are listed in misc_first_child.
Definition: hwloc.h:501
const char * hwloc_obj_type_string(hwloc_obj_type_t type)
Return a constant stringified object type.
struct hwloc_obj * io_first_child
First I/O child. Bridges, PCI and OS devices are listed here (io_arity and io_first_child) instead of...
Definition: hwloc.h:492
unsigned char alloc_membind
Definition: hwloc.h:2069
static int hwloc_get_nbobjs_by_type(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the width of level type type.
Move Misc objects to ancestors if their parents are removed during restriction. If this flag is not s...
Definition: hwloc.h:2265
hwloc_obj_cache_type_t type
Cache type.
Definition: hwloc.h:621
Operating system network device. For instance the "eth0" interface on Linux.
Definition: hwloc.h:345
unsigned kind
Internally-used kind of group.
Definition: hwloc.h:627
unsigned char revision
Definition: hwloc.h:641
union hwloc_obj_attr_u * attr
Object type-specific Attributes, may be NULL if no attribute value was found.
Definition: hwloc.h:414
Returned by get_membind() functions when multiple threads or parts of a memory area have differing me...
Definition: hwloc.h:1427
struct hwloc_obj_attr_u::hwloc_group_attr_s group
Virtual depth for MemCache object.
Definition: hwloc.h:828
unsigned long hwloc_topology_get_flags(hwloc_topology_t topology)
Get OR&#39;ed flags of a topology.
Restrict by nodeset instead of CPU set. Only keep objects whose nodeset is included or partially incl...
Definition: hwloc.h:2252
struct hwloc_obj ** children
Normal children, children[0 .. arity -1].
Definition: hwloc.h:455
unsigned char get_thisthread_membind
Definition: hwloc.h:2063
int hwloc_get_proc_cpubind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags)
Get the current physical binding of process pid.
int hwloc_topology_load(hwloc_topology_t topology)
Build the actual topology.
hwloc_obj_osdev_type_t type
Definition: hwloc.h:665
int hwloc_get_cpubind(hwloc_topology_t topology, hwloc_cpuset_t set, int flags)
Get current process or thread binding.
unsigned char func
Definition: hwloc.h:638
Level 4 Data (or Unified) Cache.
Definition: hwloc.h:216
int hwloc_topology_refresh(hwloc_topology_t topology)
Refresh internal structures after topology modification.
Operating system co-processor device. For instance "opencl0d0" for a OpenCL device, "cuda0" for a CUDA device.
Definition: hwloc.h:352
static int hwloc_get_type_or_below_depth(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the depth of objects of type type or below.
int hwloc_topology_set_icache_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter)
Set the filtering for all CPU instruction cache object types.
Only allow objects that are available to the current process.
Definition: hwloc.h:2315
PCI-side of a bridge.
Definition: hwloc.h:335
Move I/O objects to ancestors if their parents are removed during restriction. If this flag is not se...
Definition: hwloc.h:2271
int hwloc_get_memory_parents_depth(hwloc_topology_t topology)
Return the depth of parents where memory objects are attached.
struct hwloc_obj_attr_u::hwloc_numanode_attr_s::hwloc_memory_page_type_s * page_types
void hwloc_topology_check(hwloc_topology_t topology)
Run internal checks on a topology structure.
int hwloc_topology_set_synthetic(hwloc_topology_t restrict topology, const char *restrict description)
Enable synthetic topology.
Object type-specific Attributes.
Definition: hwloc.h:598
struct hwloc_obj * next_cousin
Next object of same type and depth.
Definition: hwloc.h:441
static void * hwloc_alloc_membind_policy(hwloc_topology_t topology, size_t len, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Allocate some memory on NUMA memory nodes specified by set.
enum hwloc_obj_cache_type_e hwloc_obj_cache_type_t
Cache type.
unsigned char set_proc_cpubind
Definition: hwloc.h:2027
void * hwloc_alloc_membind(hwloc_topology_t topology, size_t len, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Allocate some memory on NUMA memory nodes specified by set.
void hwloc_topology_set_userdata(hwloc_topology_t topology, const void *userdata)
Set the topology-specific userdata pointer.
hwloc_nodeset_t complete_nodeset
The complete NUMA node set of this object,.
Definition: hwloc.h:561
int hwloc_obj_type_snprintf(char *restrict string, size_t size, hwloc_obj_t obj, int verbose)
Stringify the type of a given topology object into a human-readable form.
int hwloc_topology_set_io_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter)
Set the filtering for all I/O object types.
hwloc_obj_osdev_type_e
Type of a OS device.
Definition: hwloc.h:339
int hwloc_obj_attr_snprintf(char *restrict string, size_t size, hwloc_obj_t obj, const char *restrict separator, int verbose)
Stringify the attributes of a given topology object into a human-readable form.
Physical package. The physical package that usually gets inserted into a socket on the motherboard...
Definition: hwloc.h:191
Virtual depth for PCI device object level.
Definition: hwloc.h:825
Mark all objects as allowed in the topology.
Definition: hwloc.h:2306
int hwloc_type_sscanf_as_depth(const char *string, hwloc_obj_type_t *typep, hwloc_topology_t topology, int *depthp)
Return an object type and its level depth from a type string.
union hwloc_obj_attr_u::hwloc_bridge_attr_s::@0 upstream
Operating system openfabrics device. For instance the "mlx4_0" InfiniBand HCA, or "hfi1_0" Omni-Path ...
Definition: hwloc.h:347
int hwloc_set_proc_cpubind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_cpuset_t set, int flags)
Bind a process pid on cpus given in physical bitmap set.
struct hwloc_obj * first_child
First normal child.
Definition: hwloc.h:456
hwloc_const_bitmap_t hwloc_const_nodeset_t
A non-modifiable hwloc_nodeset_t.
Definition: hwloc.h:160
Avoid any effect on memory binding.
Definition: hwloc.h:1203
struct hwloc_obj_attr_u::hwloc_bridge_attr_s bridge
unsigned char get_thread_cpubind
Definition: hwloc.h:2037
unsigned char get_thisproc_cpubind
Definition: hwloc.h:2025
Virtual depth for Misc object.
Definition: hwloc.h:827
int hwloc_topology_set_all_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter)
Set the filtering for all object types.
hwloc_uint64_t size
Size of pages.
Definition: hwloc.h:609
const struct hwloc_bitmap_s * hwloc_const_bitmap_t
a non-modifiable hwloc_bitmap_t
Definition: bitmap.h:70
unsigned char dev
Definition: hwloc.h:638
unsigned char set_thread_cpubind
Definition: hwloc.h:2035
int hwloc_topology_init(hwloc_topology_t *topologyp)
Allocate a topology context.
unsigned char secondary_bus
Definition: hwloc.h:657
int depth
Vertical index in the hierarchy.
Definition: hwloc.h:418
Bind all threads of the current (possibly) multithreaded process.
Definition: hwloc.h:1157
PCI Device specific Object Attributes.
Definition: hwloc.h:632
unsigned char set_thisthread_membind
Definition: hwloc.h:2061
Avoid any effect on CPU binding.
Definition: hwloc.h:1480
Machine. A set of processors and memory with cache coherency.
Definition: hwloc.h:182
hwloc_cpuset_t complete_cpuset
The complete CPU set of processors of this object,.
Definition: hwloc.h:526
int hwloc_topology_set_xmlbuffer(hwloc_topology_t restrict topology, const char *restrict buffer, int size)
Enable XML based topology using a memory buffer (instead of a file, as with hwloc_topology_set_xml())...
hwloc_obj_type_t
Type of topology object.
Definition: hwloc.h:176
int hwloc_set_cpubind(hwloc_topology_t topology, hwloc_const_cpuset_t set, int flags)
Bind current process or thread on cpus given in physical bitmap set.
struct hwloc_pcidev_attr_s pci
Definition: hwloc.h:647
Array of local memory page types, NULL if no local memory and page_types is 0.
Definition: hwloc.h:608
hwloc_obj_t hwloc_topology_alloc_group_object(hwloc_topology_t topology)
Allocate a Group object to insert later with hwloc_topology_insert_group_object().
unsigned char numa_memory
Detecting the amount of memory in NUMA nodes is supported.
Definition: hwloc.h:2007
Allocate each memory page individually on the local NUMA node of the thread that touches it...
Definition: hwloc.h:1399
void * hwloc_topology_get_userdata(hwloc_topology_t topology)
Retrieve the topology-specific userdata pointer.
int hwloc_topology_is_thissystem(hwloc_topology_t restrict topology)
Does the topology context come from this system?
struct hwloc_obj * next_sibling
Next object below the same parent (inside the same list of children).
Definition: hwloc.h:447
Assume that the selected backend provides the topology for the system on which we are running...
Definition: hwloc.h:1924
int hwloc_free(hwloc_topology_t topology, void *addr, size_t len)
Free memory that was previously allocated by hwloc_alloc() or hwloc_alloc_membind().
char * name
Info name.
Definition: hwloc.h:674
unsigned char get_proc_last_cpu_location
Definition: hwloc.h:2041
Reset the memory allocation policy to the system default. Depending on the operating system...
Definition: hwloc.h:1388
unsigned infos_count
Size of infos array.
Definition: hwloc.h:578
unsigned char pu
Detecting the number of PU objects is supported.
Definition: hwloc.h:2003
int hwloc_set_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Set the default memory binding policy of the specified process to prefer the NUMA node(s) specified b...
static int hwloc_get_type_or_above_depth(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the depth of objects of type type or above.
hwloc_const_bitmap_t hwloc_const_cpuset_t
A non-modifiable hwloc_cpuset_t.
Definition: hwloc.h:142
hwloc_membind_policy_t
Memory binding policy.
Definition: hwloc.h:1380
Allocate memory on the given nodes in an interleaved / round-robin manner. The precise layout of the ...
Definition: hwloc.h:1412
Ignore all objects of this type.
Definition: hwloc.h:2150
OS Device specific Object Attributes.
Definition: hwloc.h:664
static hwloc_obj_t hwloc_get_root_obj(hwloc_topology_t topology)
Returns the top-object of the topology-tree.
struct hwloc_obj * hwloc_obj_t
Convenience typedef; a pointer to a struct hwloc_obj.
Definition: hwloc.h:595
hwloc_obj_type_t type
Type of object.
Definition: hwloc.h:397
Level 3 Data (or Unified) Cache.
Definition: hwloc.h:215
unsigned char get_thisthread_cpubind
Definition: hwloc.h:2033
int hwloc_set_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Bind the already-allocated memory identified by (addr, len) to the NUMA node(s) specified by set...
unsigned char set_thisthread_cpubind
Definition: hwloc.h:2031
Allocate memory on the specified nodes.
Definition: hwloc.h:1403
Set of flags describing actual support for this topology.
Definition: hwloc.h:2097
Allow a custom set of objects, given to hwloc_topology_allow() as cpuset and/or nodeset parameters...
Definition: hwloc.h:2319
Level 1 instruction Cache (filtered out by default).
Definition: hwloc.h:219
unsigned os_index
OS-provided physical index number. It is not guaranteed unique across the entire machine, except for PUs and NUMA nodes. Set to HWLOC_UNKNOWN_INDEX if unknown or irrelevant for this object.
Definition: hwloc.h:400
unsigned char nexttouch_membind
Definition: hwloc.h:2077
unsigned char set_proc_membind
Definition: hwloc.h:2057
Only keep likely-important objects of the given type.
Definition: hwloc.h:2179
int hwloc_topology_set_type_filter(hwloc_topology_t topology, hwloc_obj_type_t type, enum hwloc_type_filter_e filter)
Set the filtering for the given object type.
int hwloc_topology_get_depth(hwloc_topology_t restrict topology)
Get the depth of the hierarchical tree of objects.
Blacklist the target component from being used.
Definition: hwloc.h:1846
unsigned char numa
Detecting the number of NUMA nodes is supported.
Definition: hwloc.h:2005
int hwloc_topology_get_type_filter(hwloc_topology_t topology, hwloc_obj_type_t type, enum hwloc_type_filter_e *filter)
Get the current filtering for the given object type.
unsigned logical_index
Horizontal index in the whole list of similar objects, hence guaranteed unique across the entire mach...
Definition: hwloc.h:433
unsigned hwloc_get_nbobjs_by_depth(hwloc_topology_t topology, int depth)
Returns the width of level at depth depth.
int hwloc_topology_allow(hwloc_topology_t restrict topology, hwloc_const_cpuset_t cpuset, hwloc_const_nodeset_t nodeset, unsigned long flags)
Change the sets of allowed PUs and NUMA nodes in the topology.
int hwloc_topology_set_components(hwloc_topology_t restrict topology, unsigned long flags, const char *restrict name)
Prevent a discovery component from being used for a topology.
Operating system device (filtered out by default).
Definition: hwloc.h:279
unsigned sibling_rank
Index in parent&#39;s children[] array. Or the index in parent&#39;s Memory, I/O or Misc children list...
Definition: hwloc.h:446
Level 3 instruction Cache (filtered out by default).
Definition: hwloc.h:221
Processing Unit, or (Logical) Processor. An execution unit (may share a core with some other logical ...
Definition: hwloc.h:201
unsigned hwloc_get_api_version(void)
Indicate at runtime which hwloc API version was used at build time.
int hwloc_type_sscanf(const char *string, hwloc_obj_type_t *typep, union hwloc_obj_attr_u *attrp, size_t attrsize)
Return an object type and attributes from a type string.
enum hwloc_obj_bridge_type_e hwloc_obj_bridge_type_t
Type of one side (upstream or downstream) of an I/O bridge.
Structure of a topology object.
Definition: hwloc.h:395
struct hwloc_obj * parent
Parent, NULL if root (Machine object)
Definition: hwloc.h:445
int hwloc_obj_add_other_obj_sets(hwloc_obj_t dst, hwloc_obj_t src)
Setup object cpusets/nodesets by OR&#39;ing another object&#39;s sets.
Set policy for a specific thread of the current process. This flag is mutually exclusive with HWLOC_M...
Definition: hwloc.h:1453
Flags describing actual discovery support for this topology.
Definition: hwloc.h:2001
void * userdata
Application-given private data pointer, initialized to NULL, use it as you wish. See hwloc_topology_s...
Definition: hwloc.h:581
hwloc_uint64_t count
Number of pages of this size.
Definition: hwloc.h:610
unsigned char get_area_membind
Definition: hwloc.h:2067
static const char * hwloc_obj_get_info_by_name(hwloc_obj_t obj, const char *name)
Search the given key name in object infos and return the corresponding value.
struct hwloc_obj * prev_sibling
Previous object below the same parent (inside the same list of children).
Definition: hwloc.h:448
struct hwloc_obj_attr_u::hwloc_osdev_attr_s osdev
hwloc_uint64_t gp_index
Global persistent index. Generated by hwloc, unique across the topology (contrary to os_index) and pe...
Definition: hwloc.h:586
union hwloc_obj_attr_u::hwloc_bridge_attr_s::@1 downstream
Virtual depth for NUMA nodes.
Definition: hwloc.h:823
Detect the whole system, ignore reservations, include disallowed objects.
Definition: hwloc.h:1904
hwloc_obj_t hwloc_get_obj_by_depth(hwloc_topology_t topology, int depth, unsigned idx)
Returns the topology object at logical index idx from depth depth.
hwloc_obj_bridge_type_e
Type of one side (upstream or downstream) of an I/O bridge.
Definition: hwloc.h:333
NUMA node. An object that contains memory that is directly and byte-accessible to the host processors...
Definition: hwloc.h:236
PCI device (filtered out by default).
Definition: hwloc.h:269
int hwloc_set_thread_cpubind(hwloc_topology_t topology, hwloc_thread_t thread, hwloc_const_cpuset_t set, int flags)
Bind a thread thread on cpus given in physical bitmap set.
unsigned char get_area_memlocation
Definition: hwloc.h:2081
unsigned char set_thisproc_cpubind
Definition: hwloc.h:2023
Get the set of allowed resources from the local operating system even if the topology was loaded from...
Definition: hwloc.h:1945
hwloc_uint64_t total_memory
Total memory (in bytes) in NUMA nodes below this object.
Definition: hwloc.h:412
Only ignore objects if their entire level does not bring any structure.
Definition: hwloc.h:2164
Memory-side cache (filtered out by default). A cache in front of a specific NUMA node.
Definition: hwloc.h:305
unsigned char set_area_membind
Definition: hwloc.h:2065
char * subtype
Subtype string to better describe the type field.
Definition: hwloc.h:398
hwloc_obj_bridge_type_t upstream_type
Definition: hwloc.h:649
Group-specific Object Attributes.
Definition: hwloc.h:624
hwloc_type_filter_e
Type filtering flags.
Definition: hwloc.h:2136
hwloc_membind_flags_t
Memory binding flags.
Definition: hwloc.h:1443
float linkspeed
Definition: hwloc.h:642
unsigned short domain
Definition: hwloc.h:634
void * hwloc_alloc(hwloc_topology_t topology, size_t len)
Allocate some memory.
NUMA node-specific Object Attributes.
Definition: hwloc.h:600
Bind current thread of current process.
Definition: hwloc.h:1161
unsigned short subvendor_id
Definition: hwloc.h:640
struct hwloc_bitmap_s * hwloc_bitmap_t
Set of bits represented as an opaque pointer to an internal bitmap.
Definition: bitmap.h:68
enum hwloc_obj_osdev_type_e hwloc_obj_osdev_type_t
Type of a OS device.
static hwloc_obj_t hwloc_get_obj_by_type(hwloc_topology_t topology, hwloc_obj_type_t type, unsigned idx)
Returns the topology object at logical index idx with type type.
Level 2 instruction Cache (filtered out by default).
Definition: hwloc.h:220
struct hwloc_topology * hwloc_topology_t
Topology context.
Definition: hwloc.h:691
int hwloc_topology_restrict(hwloc_topology_t restrict topology, hwloc_const_bitmap_t set, unsigned long flags)
Restrict the topology to the given CPU set or nodeset.
struct hwloc_obj * memory_first_child
First Memory child. NUMA nodes and Memory-side caches are listed here (memory_arity and memory_first_...
Definition: hwloc.h:474
hwloc_obj_bridge_type_t downstream_type
Definition: hwloc.h:660
unsigned char disallowed_pu
Detecting and identifying PU objects that are not available to the current process is supported...
Definition: hwloc.h:2009
Import support from the imported topology.
Definition: hwloc.h:1969
Definition: hwloc.h:1461
unsigned char get_thisproc_membind
Definition: hwloc.h:2055
int symmetric_subtree
Set if the subtree of normal objects below this object is symmetric, which means all normal children ...
Definition: hwloc.h:460
Level 5 Data (or Unified) Cache.
Definition: hwloc.h:217
static hwloc_obj_t hwloc_get_next_obj_by_type(hwloc_topology_t topology, hwloc_obj_type_t type, hwloc_obj_t prev)
Returns the next object of type type.
hwloc_topology_flags_e
Flags to be set onto a topology context before load.
Definition: hwloc.h:1883
unsigned short class_id
Definition: hwloc.h:639
int hwloc_compare_types(hwloc_obj_type_t type1, hwloc_obj_type_t type2)
Compare the depth of two object types.
For each page bound with this policy, by next time it is touched (and next time only), it is moved from its current location to the local NUMA node of the thread where the memory reference occurred (if it needs to be moved at all).
Definition: hwloc.h:1419
unsigned char get_thisproc_last_cpu_location
Definition: hwloc.h:2039
Objects of given type exist at different depth in the topology (only for Groups). ...
Definition: hwloc.h:822
int hwloc_topology_dup(hwloc_topology_t *newtopology, hwloc_topology_t oldtopology)
Duplicate a topology.
struct hwloc_obj_attr_u::hwloc_numanode_attr_s numanode
int hwloc_get_proc_membind(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_bitmap_t set, hwloc_membind_policy_t *policy, int flags)
Query the default memory binding policy and physical locality of the specified process.
hwloc_cpubind_flags_t
Process/Thread binding flags.
Definition: hwloc.h:1154
unsigned io_arity
Number of I/O children. These children are listed in io_first_child.
Definition: hwloc.h:489
hwloc_bitmap_t hwloc_cpuset_t
A CPU set is a bitmap whose bits are set according to CPU physical OS indexes.
Definition: hwloc.h:140
Bridge specific Object Attribues.
Definition: hwloc.h:645
unsigned memory_arity
Number of Memory children. These children are listed in memory_first_child.
Definition: hwloc.h:471
hwloc_obj_t hwloc_topology_insert_misc_object(hwloc_topology_t topology, hwloc_obj_t parent, const char *name)
Add a MISC object as a leaf of the topology.
int hwloc_get_proc_last_cpu_location(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags)
Get the last physical CPU where a process ran.
unsigned char bind_membind
Definition: hwloc.h:2073
Cache-specific Object Attributes.
Definition: hwloc.h:615
int hwloc_get_membind(hwloc_topology_t topology, hwloc_bitmap_t set, hwloc_membind_policy_t *policy, int flags)
Query the default memory binding policy and physical locality of the current process or thread...
unsigned short domain
Definition: hwloc.h:653
hwloc_restrict_flags_e
Flags to be given to hwloc_topology_restrict().
Definition: hwloc.h:2240
No object of given type exists in the topology.
Definition: hwloc.h:821
struct hwloc_topology_cpubind_support * cpubind
Definition: hwloc.h:2099
unsigned short device_id
Definition: hwloc.h:640
Group objects. Objects which do not fit in the above but are detected by hwloc and are useful to take...
Definition: hwloc.h:223
static hwloc_obj_t hwloc_get_next_obj_by_depth(hwloc_topology_t topology, int depth, hwloc_obj_t prev)
Returns the next object at depth depth.
unsigned short subdevice_id
Definition: hwloc.h:640
Instruction cache (filtered out by default).
Definition: hwloc.h:329
hwloc_uint64_t size
Size of cache in bytes.
Definition: hwloc.h:616
Data cache.
Definition: hwloc.h:328
Operating system dma engine device. For instance the "dma0chan0" DMA channel on Linux.
Definition: hwloc.h:350
Flags describing actual memory binding support for this topology.
Definition: hwloc.h:2051
int hwloc_get_area_membind(hwloc_topology_t topology, const void *addr, size_t len, hwloc_bitmap_t set, hwloc_membind_policy_t *policy, int flags)
Query the CPUs near the physical NUMA node(s) and binding policy of the memory identified by (addr...
const struct hwloc_topology_support * hwloc_topology_get_support(hwloc_topology_t restrict topology)
Retrieve the topology support.
hwloc_allow_flags_e
Flags to be given to hwloc_topology_allow().
Definition: hwloc.h:2301
Remove all objects that became Memory-less. By default, only objects that contain no PU and no memory...
Definition: hwloc.h:2259
Miscellaneous objects (filtered out by default). Objects without particular meaning, that can e.g. be added by the application for its own use, or by hwloc for miscellaneous objects such as MemoryModule (DIMMs).
Definition: hwloc.h:290
unsigned char get_proc_cpubind
Definition: hwloc.h:2029
Object info.
Definition: hwloc.h:673
unsigned char get_thisthread_last_cpu_location
Definition: hwloc.h:2043
Operating system GPU device. For instance ":0.0" for a GL display, "card0" for a Linux DRM device...
Definition: hwloc.h:342
hwloc_obj_t hwloc_topology_insert_group_object(hwloc_topology_t topology, hwloc_obj_t group)
Add more structure to the topology by adding an intermediate Group.
struct hwloc_obj * misc_first_child
First Misc child. Misc objects are listed here (misc_arity and misc_first_child) instead of in the no...
Definition: hwloc.h:504
struct hwloc_topology_membind_support * membind
Definition: hwloc.h:2100
char * value
Info value.
Definition: hwloc.h:675
Bridge (filtered out by default). Any bridge (or PCI switch) that connects the host or an I/O bus...
Definition: hwloc.h:257
hwloc_uint64_t local_memory
Local memory (in bytes)
Definition: hwloc.h:601
struct hwloc_obj_attr_u::hwloc_cache_attr_s cache
hwloc_obj_cache_type_e
Cache type.
Definition: hwloc.h:326
struct hwloc_obj * prev_cousin
Previous object of same type and depth.
Definition: hwloc.h:442
int hwloc_topology_set_xml(hwloc_topology_t restrict topology, const char *restrict xmlpath)
Enable XML-file based topology.
hwloc_nodeset_t nodeset
NUMA nodes covered by this object or containing this object.
Definition: hwloc.h:539
unsigned char cpukind_efficiency
Detecting the efficiency of CPU kinds is supported, see Kinds of CPU cores.
Definition: hwloc.h:2013
Virtual depth for bridge object level.
Definition: hwloc.h:824
Die within a physical package. A subpart of the physical package, that contains multiple cores...
Definition: hwloc.h:318
hwloc_obj_type_t hwloc_get_depth_type(hwloc_topology_t topology, int depth)
Returns the type of objects at depth depth.
unsigned linesize
Cache-line size in bytes. 0 if unknown.
Definition: hwloc.h:618
int hwloc_get_thread_cpubind(hwloc_topology_t topology, hwloc_thread_t thread, hwloc_cpuset_t set, int flags)
Get the current physical binding of thread tid.
Core. A computation unit (may be shared by several PUs, aka logical processors).
Definition: hwloc.h:197
Host-side of a bridge, only possible upstream.
Definition: hwloc.h:334
hwloc_topology_components_flag_e
Flags to be passed to hwloc_topology_set_components()
Definition: hwloc.h:1842
int hwloc_set_membind(hwloc_topology_t topology, hwloc_const_bitmap_t set, hwloc_membind_policy_t policy, int flags)
Set the default memory binding policy of the current process or thread to prefer the NUMA node(s) spe...
unsigned char firsttouch_membind
Definition: hwloc.h:2071
int hwloc_topology_abi_check(hwloc_topology_t topology)
Verify that the topology is compatible with the current hwloc library.
Consider the bitmap argument as a nodeset.
Definition: hwloc.h:1491
unsigned char subordinate_bus
Definition: hwloc.h:657
hwloc_get_type_depth_e
Definition: hwloc.h:820
hwloc_cpuset_t cpuset
CPUs covered by this object.
Definition: hwloc.h:511
unsigned arity
Number of normal children. Memory, Misc and I/O children are not listed here but rather in their dedi...
Definition: hwloc.h:451
Unified cache.
Definition: hwloc.h:327
unsigned char imported_support
Definition: hwloc.h:2088
struct hwloc_topology_misc_support * misc
Definition: hwloc.h:2101
int hwloc_get_last_cpu_location(hwloc_topology_t topology, hwloc_cpuset_t set, int flags)
Get the last physical CPU where the current process or thread ran.
Keep all objects of this type.
Definition: hwloc.h:2142
unsigned char migrate_membind
Definition: hwloc.h:2079
Flags describing actual PU binding support for this topology.
Definition: hwloc.h:2021
int hwloc_topology_set_pid(hwloc_topology_t restrict topology, hwloc_pid_t pid)
Change which process the topology is viewed from.
struct hwloc_obj_attr_u::hwloc_pcidev_attr_s pcidev
struct hwloc_info_s * infos
Array of stringified info type=name.
Definition: hwloc.h:577
unsigned subkind
Internally-used subkind to distinguish different levels of groups with same kind. ...
Definition: hwloc.h:628
unsigned depth
Depth of cache (e.g., L1, L2, ...etc.)
Definition: hwloc.h:617
Request for strict binding from the OS.
Definition: hwloc.h:1186
struct hwloc_obj * last_child
Last normal child.
Definition: hwloc.h:457
void hwloc_topology_destroy(hwloc_topology_t topology)
Terminate and free a topology context.
int hwloc_topology_set_flags(hwloc_topology_t topology, unsigned long flags)
Set OR&#39;ed flags to non-yet-loaded topology.
int hwloc_topology_set_cache_types_filter(hwloc_topology_t topology, enum hwloc_type_filter_e filter)
Set the filtering for all CPU cache object types.
Operating system block device, or non-volatile memory device. For instance "sda" or "dax2...
Definition: hwloc.h:340
unsigned page_types_len
Size of array page_types.
Definition: hwloc.h:602
Virtual depth for software device object level.
Definition: hwloc.h:826
struct hwloc_topology_discovery_support * discovery
Definition: hwloc.h:2098
unsigned char disallowed_numa
Detecting and identifying NUMA nodes that are not available to the current process is supported...
Definition: hwloc.h:2011
int hwloc_get_type_depth(hwloc_topology_t topology, hwloc_obj_type_t type)
Returns the depth of objects of type type.
Set policy for all threads of the specified (possibly multithreaded) process. This flag is mutually e...
Definition: hwloc.h:1448
int hwloc_get_area_memlocation(hwloc_topology_t topology, const void *addr, size_t len, hwloc_bitmap_t set, int flags)
Get the NUMA nodes where memory identified by (addr, len ) is physically allocated.
hwloc_bitmap_t hwloc_nodeset_t
A node set is a bitmap whose bits are set according to NUMA memory node physical OS indexes...
Definition: hwloc.h:157
unsigned char bus
Definition: hwloc.h:638
unsigned char dont_merge
Flag preventing groups from being automatically merged with identical parent or children.
Definition: hwloc.h:629
Flags describing miscellaneous features.
Definition: hwloc.h:2086
char * name
Object-specific name if any. Mostly used for identifying OS devices and Misc objects where a name str...
Definition: hwloc.h:407
int associativity
Ways of associativity, -1 if fully associative, 0 if unknown.
Definition: hwloc.h:619
unsigned depth
Depth of group object. It may change if intermediate Group objects are added.
Definition: hwloc.h:625
Level 2 Data (or Unified) Cache.
Definition: hwloc.h:214
Level 1 Data (or Unified) Cache.
Definition: hwloc.h:213
unsigned char interleave_membind
Definition: hwloc.h:2075
Migrate existing allocated memory. If the memory cannot be migrated and the HWLOC_MEMBIND_STRICT flag...
Definition: hwloc.h:1467
Remove all objects that became CPU-less. By default, only objects that contain no PU and no memory ar...
Definition: hwloc.h:2246
unsigned char set_thisproc_membind
Definition: hwloc.h:2053
unsigned depth
Definition: hwloc.h:661