htop/hwloc-1.2.1/include/private/private.h

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/*
* Copyright © 2009 CNRS
* Copyright © 2009-2011 INRIA. All rights reserved.
* Copyright © 2009-2011 Université Bordeaux 1
* Copyright © 2009-2011 Cisco Systems, Inc. All rights reserved.
*
* See COPYING in top-level directory.
*/
/* Internal types and helpers. */
#ifndef HWLOC_PRIVATE_H
#define HWLOC_PRIVATE_H
#include <private/autogen/config.h>
#include <hwloc.h>
#include <hwloc/bitmap.h>
#include <private/debug.h>
#include <sys/types.h>
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#include <string.h>
#ifdef HWLOC_HAVE_ATTRIBUTE_FORMAT
# if HWLOC_HAVE_ATTRIBUTE_FORMAT
# define __hwloc_attribute_format(type, str, arg) __attribute__((__format__(type, str, arg)))
# else
# define __hwloc_attribute_format(type, str, arg)
# endif
#else
# define __hwloc_attribute_format(type, str, arg)
#endif
enum hwloc_ignore_type_e {
HWLOC_IGNORE_TYPE_NEVER = 0,
HWLOC_IGNORE_TYPE_KEEP_STRUCTURE,
HWLOC_IGNORE_TYPE_ALWAYS
};
#define HWLOC_DEPTH_MAX 128
typedef enum hwloc_backend_e {
HWLOC_BACKEND_NONE,
HWLOC_BACKEND_SYNTHETIC,
#ifdef HWLOC_LINUX_SYS
HWLOC_BACKEND_SYSFS,
#endif
#ifdef HWLOC_HAVE_XML
HWLOC_BACKEND_XML,
#endif
/* This value is only here so that we can end the enum list without
a comma (thereby preventing compiler warnings) */
HWLOC_BACKEND_MAX
} hwloc_backend_t;
struct hwloc_topology {
unsigned nb_levels; /* Number of horizontal levels */
unsigned next_group_depth; /* Depth of the next Group object that we may create */
unsigned level_nbobjects[HWLOC_DEPTH_MAX]; /* Number of objects on each horizontal level */
struct hwloc_obj **levels[HWLOC_DEPTH_MAX]; /* Direct access to levels, levels[l = 0 .. nblevels-1][0..level_nbobjects[l]] */
unsigned long flags;
int type_depth[HWLOC_OBJ_TYPE_MAX];
enum hwloc_ignore_type_e ignored_types[HWLOC_OBJ_TYPE_MAX];
int is_thissystem;
int is_loaded;
hwloc_pid_t pid; /* Process ID the topology is view from, 0 for self */
int (*set_thisproc_cpubind)(hwloc_topology_t topology, hwloc_const_cpuset_t set, int flags);
int (*get_thisproc_cpubind)(hwloc_topology_t topology, hwloc_cpuset_t set, int flags);
int (*set_thisthread_cpubind)(hwloc_topology_t topology, hwloc_const_cpuset_t set, int flags);
int (*get_thisthread_cpubind)(hwloc_topology_t topology, hwloc_cpuset_t set, int flags);
int (*set_proc_cpubind)(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_cpuset_t set, int flags);
int (*get_proc_cpubind)(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags);
#ifdef hwloc_thread_t
int (*set_thread_cpubind)(hwloc_topology_t topology, hwloc_thread_t tid, hwloc_const_cpuset_t set, int flags);
int (*get_thread_cpubind)(hwloc_topology_t topology, hwloc_thread_t tid, hwloc_cpuset_t set, int flags);
#endif
int (*get_thisproc_last_cpu_location)(hwloc_topology_t topology, hwloc_cpuset_t set, int flags);
int (*get_thisthread_last_cpu_location)(hwloc_topology_t topology, hwloc_cpuset_t set, int flags);
int (*get_proc_last_cpu_location)(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_cpuset_t set, int flags);
int (*set_thisproc_membind)(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags);
int (*get_thisproc_membind)(hwloc_topology_t topology, hwloc_nodeset_t nodeset, hwloc_membind_policy_t * policy, int flags);
int (*set_thisthread_membind)(hwloc_topology_t topology, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags);
int (*get_thisthread_membind)(hwloc_topology_t topology, hwloc_nodeset_t nodeset, hwloc_membind_policy_t * policy, int flags);
int (*set_proc_membind)(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags);
int (*get_proc_membind)(hwloc_topology_t topology, hwloc_pid_t pid, hwloc_nodeset_t nodeset, hwloc_membind_policy_t * policy, int flags);
int (*set_area_membind)(hwloc_topology_t topology, const void *addr, size_t len, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags);
int (*get_area_membind)(hwloc_topology_t topology, const void *addr, size_t len, hwloc_nodeset_t nodeset, hwloc_membind_policy_t * policy, int flags);
/* This has to return the same kind of pointer as alloc_membind, so that free_membind can be used on it */
void *(*alloc)(hwloc_topology_t topology, size_t len);
/* alloc_membind has to always succeed if !(flags & HWLOC_MEMBIND_STRICT).
* see hwloc_alloc_or_fail which is convenient for that. */
void *(*alloc_membind)(hwloc_topology_t topology, size_t len, hwloc_const_nodeset_t nodeset, hwloc_membind_policy_t policy, int flags);
int (*free_membind)(hwloc_topology_t topology, void *addr, size_t len);
struct hwloc_topology_support support;
struct hwloc_os_distances_s {
int nbobjs;
unsigned *indexes; /* array of OS indexes before we can convert them into objs. always available.
*/
struct hwloc_obj **objs; /* array of objects, in the same order as above.
* either given (by a backend) together with the indexes array above.
* or build from the above indexes array when not given (by the user).
*/
float *distances; /* distance matrices, ordered according to the above indexes/objs array.
* distance from i to j is stored in slot i*nbnodes+j.
* will be copied into the main logical-index-ordered distance at the end of the discovery.
*/
} os_distances[HWLOC_OBJ_TYPE_MAX];
hwloc_backend_t backend_type;
union hwloc_backend_params_u {
#ifdef HWLOC_LINUX_SYS
struct hwloc_backend_params_sysfs_s {
/* sysfs backend parameters */
char *root_path; /* The path of the file system root, used when browsing, e.g., Linux' sysfs and procfs. */
int root_fd; /* The file descriptor for the file system root, used when browsing, e.g., Linux' sysfs and procfs. */
} sysfs;
#endif /* HWLOC_LINUX_SYS */
#if defined(HWLOC_OSF_SYS) || defined(HWLOC_COMPILE_PORTS)
struct hwloc_backend_params_osf {
int nbnodes;
} osf;
#endif /* HWLOC_OSF_SYS */
#ifdef HWLOC_HAVE_XML
struct hwloc_backend_params_xml_s {
/* xml backend parameters */
void *doc;
} xml;
#endif /* HWLOC_HAVE_XML */
struct hwloc_backend_params_synthetic_s {
/* synthetic backend parameters */
#define HWLOC_SYNTHETIC_MAX_DEPTH 128
unsigned arity[HWLOC_SYNTHETIC_MAX_DEPTH];
hwloc_obj_type_t type[HWLOC_SYNTHETIC_MAX_DEPTH];
unsigned id[HWLOC_SYNTHETIC_MAX_DEPTH];
unsigned depth[HWLOC_SYNTHETIC_MAX_DEPTH]; /* For cache/misc */
} synthetic;
} backend_params;
};
extern void hwloc_setup_pu_level(struct hwloc_topology *topology, unsigned nb_pus);
extern int hwloc_get_sysctlbyname(const char *name, int64_t *n);
extern int hwloc_get_sysctl(int name[], unsigned namelen, int *n);
extern unsigned hwloc_fallback_nbprocessors(struct hwloc_topology *topology);
#if defined(HWLOC_LINUX_SYS)
extern void hwloc_look_linux(struct hwloc_topology *topology);
extern void hwloc_set_linux_hooks(struct hwloc_topology *topology);
extern int hwloc_backend_sysfs_init(struct hwloc_topology *topology, const char *fsroot_path);
extern void hwloc_backend_sysfs_exit(struct hwloc_topology *topology);
#endif /* HWLOC_LINUX_SYS */
#ifdef HWLOC_HAVE_XML
extern int hwloc_backend_xml_init(struct hwloc_topology *topology, const char *xmlpath, const char *xmlbuffer, int buflen);
extern void hwloc_xml_check_distances(struct hwloc_topology *topology);
extern void hwloc_look_xml(struct hwloc_topology *topology);
extern void hwloc_backend_xml_exit(struct hwloc_topology *topology);
#endif /* HWLOC_HAVE_XML */
#ifdef HWLOC_SOLARIS_SYS
extern void hwloc_look_solaris(struct hwloc_topology *topology);
extern void hwloc_set_solaris_hooks(struct hwloc_topology *topology);
#endif /* HWLOC_SOLARIS_SYS */
#ifdef HWLOC_AIX_SYS
extern void hwloc_look_aix(struct hwloc_topology *topology);
extern void hwloc_set_aix_hooks(struct hwloc_topology *topology);
#endif /* HWLOC_AIX_SYS */
#ifdef HWLOC_OSF_SYS
extern void hwloc_look_osf(struct hwloc_topology *topology);
extern void hwloc_set_osf_hooks(struct hwloc_topology *topology);
#endif /* HWLOC_OSF_SYS */
#ifdef HWLOC_WIN_SYS
extern void hwloc_look_windows(struct hwloc_topology *topology);
extern void hwloc_set_windows_hooks(struct hwloc_topology *topology);
#endif /* HWLOC_WIN_SYS */
#ifdef HWLOC_DARWIN_SYS
extern void hwloc_look_darwin(struct hwloc_topology *topology);
extern void hwloc_set_darwin_hooks(struct hwloc_topology *topology);
#endif /* HWLOC_DARWIN_SYS */
#ifdef HWLOC_FREEBSD_SYS
extern void hwloc_look_freebsd(struct hwloc_topology *topology);
extern void hwloc_set_freebsd_hooks(struct hwloc_topology *topology);
#endif /* HWLOC_FREEBSD_SYS */
#ifdef HWLOC_HPUX_SYS
extern void hwloc_look_hpux(struct hwloc_topology *topology);
extern void hwloc_set_hpux_hooks(struct hwloc_topology *topology);
#endif /* HWLOC_HPUX_SYS */
extern void hwloc_look_x86(struct hwloc_topology *topology, unsigned nbprocs);
extern int hwloc_backend_synthetic_init(struct hwloc_topology *topology, const char *description);
extern void hwloc_backend_synthetic_exit(struct hwloc_topology *topology);
extern void hwloc_look_synthetic (struct hwloc_topology *topology);
/*
* Add an object to the topology.
* It is sorted along the tree of other objects according to the inclusion of
* cpusets, to eventually be added as a child of the smallest object including
* this object.
*
* If the cpuset is empty, the type of the object (and maybe some attributes)
* must be enough to find where to insert the object. This is especially true
* for NUMA nodes with memory and no CPUs.
*
* The given object should not have children.
*
* This shall only be called before levels are built.
*
* In case of error, hwloc_report_os_error() is called.
*/
extern void hwloc_insert_object_by_cpuset(struct hwloc_topology *topology, hwloc_obj_t obj);
/*
* Add an object to the topology and specify which error callback to use
*/
typedef void (*hwloc_report_error_t)(const char * msg, int line);
extern void hwloc_report_os_error(const char * msg, int line);
extern int hwloc__insert_object_by_cpuset(struct hwloc_topology *topology, hwloc_obj_t obj, hwloc_report_error_t report_error);
/*
* Insert an object somewhere in the topology.
*
* It is added as the last child of the given parent.
* The cpuset is completely ignored, so strange objects such as I/O devices should
* preferably be inserted with this.
*
* The given object may have children.
*
* Remember to call topology_connect() afterwards to fix handy pointers.
*/
extern void hwloc_insert_object_by_parent(struct hwloc_topology *topology, hwloc_obj_t parent, hwloc_obj_t obj);
/* Insert name/value in the object infos array. name and value are copied by the callee. */
extern void hwloc_add_object_info(hwloc_obj_t obj, const char *name, const char *value);
/* Insert uname-specific names/values in the object infos array */
extern void hwloc_add_uname_info(struct hwloc_topology *topology);
/** \brief Return a locally-allocated stringified bitmap for printf-like calls. */
static __hwloc_inline char *
hwloc_bitmap_printf_value(hwloc_const_bitmap_t bitmap)
{
char *buf;
hwloc_bitmap_asprintf(&buf, bitmap);
return buf;
}
static __hwloc_inline struct hwloc_obj *
hwloc_alloc_setup_object(hwloc_obj_type_t type, signed idx)
{
struct hwloc_obj *obj = malloc(sizeof(*obj));
memset(obj, 0, sizeof(*obj));
obj->type = type;
obj->os_index = idx;
obj->os_level = -1;
obj->attr = malloc(sizeof(*obj->attr));
memset(obj->attr, 0, sizeof(*obj->attr));
/* do not allocate the cpuset here, let the caller do it */
return obj;
}
extern void hwloc_free_unlinked_object(hwloc_obj_t obj);
#define hwloc_object_cpuset_from_array(l, _value, _array, _max) do { \
struct hwloc_obj *__l = (l); \
unsigned int *__a = (_array); \
int k; \
__l->cpuset = hwloc_bitmap_alloc(); \
for(k=0; k<_max; k++) \
if (__a[k] == _value) \
hwloc_bitmap_set(__l->cpuset, k); \
} while (0)
/* Configures an array of NUM objects of type TYPE with physical IDs OSPHYSIDS
* and for which processors have ID PROC_PHYSIDS, and add them to the topology.
* */
static __hwloc_inline void
hwloc_setup_level(int procid_max, unsigned num, unsigned *osphysids, unsigned *proc_physids, struct hwloc_topology *topology, hwloc_obj_type_t type)
{
struct hwloc_obj *obj;
unsigned j;
hwloc_debug("%d %s\n", num, hwloc_obj_type_string(type));
for (j = 0; j < num; j++)
{
obj = hwloc_alloc_setup_object(type, osphysids[j]);
hwloc_object_cpuset_from_array(obj, j, proc_physids, procid_max);
hwloc_debug_2args_bitmap("%s %d has cpuset %s\n",
hwloc_obj_type_string(type),
j, obj->cpuset);
hwloc_insert_object_by_cpuset(topology, obj);
}
hwloc_debug("%s", "\n");
}
/* This can be used for the alloc field to get allocated data that can be freed by free() */
void *hwloc_alloc_heap(hwloc_topology_t topology, size_t len);
/* This can be used for the alloc field to get allocated data that can be freed by munmap() */
void *hwloc_alloc_mmap(hwloc_topology_t topology, size_t len);
/* This can be used for the free_membind field to free data using free() */
int hwloc_free_heap(hwloc_topology_t topology, void *addr, size_t len);
/* This can be used for the free_membind field to free data using munmap() */
int hwloc_free_mmap(hwloc_topology_t topology, void *addr, size_t len);
/* Allocates unbound memory or fail, depending on whether STRICT is requested
* or not */
static __hwloc_inline void *
hwloc_alloc_or_fail(hwloc_topology_t topology, size_t len, int flags)
{
if (flags & HWLOC_MEMBIND_STRICT)
return NULL;
return hwloc_alloc(topology, len);
}
extern void hwloc_topology_distances_init(struct hwloc_topology *topology);
extern void hwloc_topology_distances_clear(struct hwloc_topology *topology);
extern void hwloc_topology_distances_destroy(struct hwloc_topology *topology);
extern void hwloc_topology__set_distance_matrix(struct hwloc_topology *topology, hwloc_obj_type_t type, unsigned nbobjs, unsigned *indexes, hwloc_obj_t *objs, float *distances);
extern void hwloc_store_distances_from_env(struct hwloc_topology *topology);
extern void hwloc_convert_distances_indexes_into_objects(struct hwloc_topology *topology);
extern void hwloc_finalize_logical_distances(struct hwloc_topology *topology);
extern void hwloc_restrict_distances(struct hwloc_topology *topology, unsigned long flags);
extern void hwloc_free_logical_distances(struct hwloc_distances_s *dist);
extern void hwloc_group_by_distances(struct hwloc_topology *topology);
#endif /* HWLOC_PRIVATE_H */