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SCHED_GETCPU

Section: Linux Programmer's Manual (3)
Updated: 2010-10-31
Index Return to Main Contents

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NAME

sched_getcpu - determine CPU on which the calling thread is running  

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 3.35 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://man7.org/linux/man-pages/.

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Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

ERRORS

VERSIONS

CONFORMING TO

NOTES

SEE ALSO

COLOPHON

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