cpuset.h File Reference

CPU sets for thread affinity (GNU extension, <sched.h>) More...

#include <stddef.h>
#include <stdint.h>

Include dependency graph for cpuset.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	cpu_set_t
	Set of CPUs for pthread_getaffinity_np() and pthread_setaffinity_np() (GNU extension). More...

Macros
#define	CPU_SETSIZE   32
	Number of CPUs a cpu_set_t can name (GNU extension).
#define	__CPU_WORD(cpu)   ((size_t)(cpu) / 32)
#define	__CPU_BIT(cpu)   (1U << ((size_t)(cpu) % 32))
#define	CPU_ZERO(set)   __cpu_zero(set)
	Remove every CPU from set (GNU extension).
#define	CPU_SET(cpu, set)
	Add CPU cpu to set (GNU extension).
#define	CPU_CLR(cpu, set)
	Remove CPU cpu from set (GNU extension).
#define	CPU_ISSET(cpu, set)    (((size_t)(cpu) < CPU_SETSIZE) && (((set)->__bits[__CPU_WORD(cpu)] & __CPU_BIT(cpu)) != 0))
	Test whether CPU cpu is in set (GNU extension).
#define	CPU_COUNT(set)   __cpu_count(set)
	Number of CPUs in set (GNU extension).
#define	CPU_EQUAL(a, b)   __cpu_equal(a, b)
	Test whether a and b name the same CPUs (GNU extension).

Functions
static void	__cpu_zero (cpu_set_t *set)
static int	__cpu_count (const cpu_set_t *set)
static int	__cpu_equal (const cpu_set_t *a, const cpu_set_t *b)

Detailed Description

CPU sets for thread affinity (GNU extension, <sched.h>)

Definition in file cpuset.h.

Macro Definition Documentation

__CPU_BIT

#define __CPU_BIT

(

cpu

)

(1U << ((size_t)(cpu) % 32))

Definition at line 69 of file cpuset.h.

__CPU_WORD

#define __CPU_WORD

(

cpu

)

((size_t)(cpu) / 32)

Definition at line 68 of file cpuset.h.

Function Documentation

__cpu_count()

static int __cpu_count ( const cpu_set_t *  set )

inlinestatic

Definition at line 46 of file cpuset.h.

__cpu_equal()

static int __cpu_equal ( const cpu_set_t *  a, const cpu_set_t *  b  )

inlinestatic

Definition at line 57 of file cpuset.h.

__cpu_zero()

static void __cpu_zero ( cpu_set_t *  set )

inlinestatic

Definition at line 39 of file cpuset.h.