Linux Certif

Toute la documentation sur la certification Linux LPI

sched_getcpu

NAME

sched_getcpu - determine CPU on which the calling thread is running

SYNOPSIS

 #define _GNU_SOURCE
 #include <sched.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 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 3.25 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/.