|SCHED_GETCPU(3)||Linux Programmer's Manual||SCHED_GETCPU(3)|
NAME¶sched_getcpu - determine CPU on which the calling thread is running
#include <sched.h> int sched_getcpu(void);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
- Since glibc 2.14:
- 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.
- This kernel does not implement getcpu(2).
VERSIONS¶This function is available since glibc 2.6.
ATTRIBUTES¶For an explanation of the terms used in this section, see attributes(7).
|sched_getcpu ()||Thread safety||MT-Safe|
CONFORMING TO¶sched_getcpu() is glibc-specific.
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), sched(7)
COLOPHON¶This page is part of release 4.10 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.