SCHED_GETCPU
Section: Linux Programmer's Manual (3)Updated: 2017-09-15
Index Return to Main Contents
NAME
sched_getcpu - determine CPU on which the calling thread is runningSYNOPSIS
#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.ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).Interface | Attribute | Value |
sched_getcpu() | Thread safety | MT-Safe |
CONFORMING TO
sched_getcpu() is glibc-specific.NOTES
The callcpu = 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 4.15 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/.
Index
- NAME
- SYNOPSIS
- DESCRIPTION
- RETURN VALUE
- ERRORS
- VERSIONS
- ATTRIBUTES
- CONFORMING TO
- NOTES
- SEE ALSO
- COLOPHON
This document was created by man2html, using the manual pages.
Time: 04:45:52 GMT, September 16, 2022
0 댓글