Manual Reference Pages  - SCHED_GETCPU (3)

NAME

sched_getcpu - determine CPU on which the calling thread is running

CONTENTS

Synopsis
Description
Return Value
Errors
Versions
Conforming To
Notes
See Also
Colophon

SYNOPSIS


#define _GNU_SOURCE         /* See feature_test_macros(7) */ 


#include <sched.h> 

int sched_getcpu(void);

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 3.44 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 SCHED_GETCPU (3) 2010-10-31
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