x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
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.
ATTRIBUTES
Multithreading (see pthreads(7))
The sched_getcpu() function is thread-safe.
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), sched(7)
COLOPHON
This page is part of release 3.69 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
http://www.kernel.org/doc/man-pages/.
Linux 2014-05-10 SCHED_GETCPU(3)
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