NAME


sched_getcpu - determine CPU on which the calling thread is running

SYNOPSIS


#define _GNU_SOURCE #include <utmpx.h>

int sched_getcpu(void);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

sched_getcpu(): _BSD_SOURCE || _SVID_SOURCE

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 non-negative 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 3.23 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/.

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