1#define _GNU_SOURCE
2#include <sched.h>
3#include <string.h>
4#include "pthread_impl.h"
5#include "syscall.h"
6
7int sched_setaffinity(pid_t tid, size_t size, const cpu_set_t *set)
8{
9 return syscall(SYS_sched_setaffinity, tid, size, set);
10}
11
12int pthread_setaffinity_np(pthread_t td, size_t size, const cpu_set_t *set)
13{
14 return -__syscall(SYS_sched_setaffinity, td->tid, size, set);
15}
16
17static int do_getaffinity(pid_t tid, size_t size, cpu_set_t *set)
18{
19 long ret = __syscall(SYS_sched_getaffinity, tid, size, set);
20 if (ret < 0) return ret;
21 if (ret < size) memset((char *)set+ret, 0, size-ret);
22 return 0;
23}
24
25int sched_getaffinity(pid_t tid, size_t size, cpu_set_t *set)
26{
27 return __syscall_ret(do_getaffinity(tid, size, set));
28}
29
30int pthread_getaffinity_np(pthread_t td, size_t size, cpu_set_t *set)
31{
32 return -do_getaffinity(td->tid, size, set);
33}