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

NAME
       sched_getcpu - determine CPU on which the calling thread is running
SYNOPSIS
       #include <sched.h>
       int sched_getcpu(void);
   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
       sched_getcpu():
           Since glibc 2.14:
               _GNU_SOURCE
           Before glibc 2.14:
               _BSD_SOURCE || _SVID_SOURCE
                   /* _GNU_SOURCE also suffices */
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 3.53 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                             2013-04-17                   SCHED_GETCPU(3)