sched_getcpu(3) | Library Functions Manual | sched_getcpu(3) |
sched_getcpu - determine CPU on which the calling thread is running
Standard C library (libc, -lc)
#include <sched.h>
int sched_getcpu(void);
sched_getcpu():
Since glibc 2.14:
_GNU_SOURCE
Before glibc 2.14:
_BSD_SOURCE || _SVID_SOURCE
/* _GNU_SOURCE also suffices */
sched_getcpu() returns the number of the CPU on which the calling thread is currently executing.
On success, sched_getcpu() returns a nonnegative CPU number. On error, -1 is returned and errno is set to indicate the error.
This function is available since glibc 2.6.
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
sched_getcpu () | Thread safety | MT-Safe |
sched_getcpu() is glibc-specific.
The call
cpu = sched_getcpu();
is equivalent to the following getcpu(2) call:
int c, s; s = getcpu(&c, NULL, NULL); cpu = (s == -1) ? s : c;
2022-12-15 | Linux man-pages 6.03 |