SCHED_GETCPU(3) | Linux Programmer's Manual | SCHED_GETCPU(3) |
NAME
sched_getcpu - determine CPU on which the calling thread is runningSYNOPSIS
#include<sched.h>
int
sched_getcpu(void);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
sched_getcpu():
- Since glibc 2.14:
- _GNU_SOURCE
- Before glibc 2.14:
-
_BSD_SOURCE || _SVID_SOURCE
/* _GNU_SOURCE also suffices */
DESCRIPTION
sched_getcpu() returns the number of the CPU on which the calling thread is currently executing.RETURN VALUE
On success, sched_getcpu() returns a nonnegative CPU number. On error, -1 is returned and errno is set to indicate the error.ERRORS
- ENOSYS
- This kernel does not implement getcpu(2).
VERSIONS
This function is available since glibc 2.6.CONFORMING TO
sched_getcpu() is glibc specific.NOTES
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;
SEE ALSO
getcpu(2)COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.2013-04-17 | Linux |