sched_getcpu(3) | Library Functions Manual | sched_getcpu(3) |
NAME
sched_getcpu - determine CPU on which the calling thread is running
LIBRARY
Standard C library (libc, -lc)
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
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
sched_getcpu () | Thread safety | MT-Safe |
STANDARDS
GNU.
HISTORY
glibc 2.6.
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
2023-07-20 | Linux man-pages 6.05.01 |