SCHED_GETCPU(3) Linux Programmer's Manual SCHED_GETCPU(3)
NAME
sched_getcpu - determine CPU on which the calling thread is running
SYNOPSIS
#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/.
Linux 2013-04-17 SCHED_GETCPU(3)