cpuset.h File Reference

The Cpuset API, for use in hwloc itself. More...

#include <hwloc/config.h>

Go to the source code of this file.

Defines
#define	hwloc_cpuset_foreach_begin(cpu, set)
	Loop macro iterating on CPU set set.
#define	hwloc_cpuset_foreach_end()
	End of loop. Needs a terminating ';'.
Typedefs
typedef struct hwloc_cpuset_s *	hwloc_cpuset_t
	Set of CPUs represented as an opaque pointer to an internal bitmask.
typedef struct hwloc_cpuset_s *	hwloc_const_cpuset_t
Functions
hwloc_cpuset_t	hwloc_cpuset_alloc (void)
	Allocate a new empty CPU set.
void	hwloc_cpuset_free (hwloc_cpuset_t set)
	Free CPU set set.
hwloc_cpuset_t	hwloc_cpuset_dup (hwloc_const_cpuset_t set)
	Duplicate CPU set set by allocating a new CPU set and copying set's contents.
void	hwloc_cpuset_copy (hwloc_cpuset_t dst, hwloc_const_cpuset_t src)
	Copy the contents of CPU set src into the already allocated CPU set dst.
int	hwloc_cpuset_snprintf (char *restrict buf, size_t buflen, hwloc_const_cpuset_t set)
	Stringify a cpuset.
int	hwloc_cpuset_asprintf (char **strp, hwloc_const_cpuset_t set)
	Stringify a cpuset into a newly allocated string.
int	hwloc_cpuset_from_string (hwloc_cpuset_t set, const char *restrict string)
	Parse a cpuset string and stores it in CPU set set.
void	hwloc_cpuset_zero (hwloc_cpuset_t set)
	Empty the CPU set set.
void	hwloc_cpuset_fill (hwloc_cpuset_t set)
	Fill CPU set set with all possible CPUs (even if those CPUs don't exist or are otherwise unavailable).
void	hwloc_cpuset_from_ulong (hwloc_cpuset_t set, unsigned long mask)
	Setup CPU set set from unsigned long mask.
void	hwloc_cpuset_from_ith_ulong (hwloc_cpuset_t set, unsigned i, unsigned long mask)
	Setup CPU set set from unsigned long mask used as i -th subset.
unsigned long	hwloc_cpuset_to_ulong (hwloc_const_cpuset_t set)
	Convert the beginning part of CPU set set into unsigned long mask.
unsigned long	hwloc_cpuset_to_ith_ulong (hwloc_const_cpuset_t set, unsigned i)
	Convert the i -th subset of CPU set set into unsigned long mask.
void	hwloc_cpuset_cpu (hwloc_cpuset_t set, unsigned cpu)
	Empty the CPU set set and add CPU cpu.
void	hwloc_cpuset_all_but_cpu (hwloc_cpuset_t set, unsigned cpu)
	Empty the CPU set set and add all but the CPU cpu.
void	hwloc_cpuset_set (hwloc_cpuset_t set, unsigned cpu)
	Add CPU cpu in CPU set set.
void	hwloc_cpuset_set_range (hwloc_cpuset_t set, unsigned begincpu, unsigned endcpu)
	Add CPUs from begincpu to endcpu in CPU set set.
void	hwloc_cpuset_clr (hwloc_cpuset_t set, unsigned cpu)
	Remove CPU cpu from CPU set set.
void	hwloc_cpuset_clr_range (hwloc_cpuset_t set, unsigned begincpu, unsigned endcpu)
	Remove CPUs from begincpu to endcpu in CPU set set.
int	hwloc_cpuset_isset (hwloc_const_cpuset_t set, unsigned cpu)
	Test whether CPU cpu is part of set set.
int	hwloc_cpuset_iszero (hwloc_const_cpuset_t set)
	Test whether set set is empty.
int	hwloc_cpuset_isfull (hwloc_const_cpuset_t set)
	Test whether set set is completely full.
int	hwloc_cpuset_isequal (hwloc_const_cpuset_t set1, hwloc_const_cpuset_t set2)
	Test whether set set1 is equal to set set2.
int	hwloc_cpuset_intersects (hwloc_const_cpuset_t set1, hwloc_const_cpuset_t set2)
	Test whether sets set1 and set2 intersects.
int	hwloc_cpuset_isincluded (hwloc_const_cpuset_t sub_set, hwloc_const_cpuset_t super_set)
	Test whether set sub_set is part of set super_set.
void	hwloc_cpuset_or (hwloc_cpuset_t res, hwloc_const_cpuset_t set1, hwloc_const_cpuset_t set2)
	Or sets set1 and set2 and store the result in set res.
void	hwloc_cpuset_and (hwloc_cpuset_t res, hwloc_const_cpuset_t set1, hwloc_const_cpuset_t set2)
	And sets set1 and set2 and store the result in set res.
void	hwloc_cpuset_andnot (hwloc_cpuset_t res, hwloc_const_cpuset_t set1, hwloc_const_cpuset_t set2)
	And set set1 and the negation of set2 and store the result in set res.
void	hwloc_cpuset_xor (hwloc_cpuset_t res, hwloc_const_cpuset_t set1, hwloc_const_cpuset_t set2)
	Xor sets set1 and set2 and store the result in set res.
void	hwloc_cpuset_not (hwloc_cpuset_t res, hwloc_const_cpuset_t set)
	Negate set set and store the result in set res.
int	hwloc_cpuset_first (hwloc_const_cpuset_t set)
	Compute the first CPU (least significant bit) in CPU set set.
int	hwloc_cpuset_last (hwloc_const_cpuset_t set)
	Compute the last CPU (most significant bit) in CPU set set.
int	hwloc_cpuset_next (hwloc_const_cpuset_t set, unsigned prev_cpu)
	Compute the next CPU in CPU set set which is after CPU prev_cpu.
void	hwloc_cpuset_singlify (hwloc_cpuset_t set)
	Keep a single CPU among those set in CPU set set.
int	hwloc_cpuset_compare_first (hwloc_const_cpuset_t set1, hwloc_const_cpuset_t set2)
	Compare CPU sets set1 and set2 using their lowest index CPU.
int	hwloc_cpuset_compare (hwloc_const_cpuset_t set1, hwloc_const_cpuset_t set2)
	Compare CPU sets set1 and set2 using their highest index CPU.
int	hwloc_cpuset_weight (hwloc_const_cpuset_t set)
	Compute the "weight" of CPU set set (i.e., number of CPUs that are in the set).

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Detailed Description

The Cpuset API, for use in hwloc itself.