linux man page for sched_getcpu

SCHED_GETCPU(3) 					     Linux Programmer's Manual						   SCHED_GETCPU(3)

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 3.27 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								    2009-12-08							   SCHED_GETCPU(3)