NAME

sched_getcpu — get current CPU

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <sched.h>

int
sched_getcpu(void);

DESCRIPTION

The sched_getcpu() function returns the current CPU on which the calling thread is running.

RETURN VALUES

sched_getcpu() returns the 0-based index of the current CPU at the time of the call. The value may become invalid immediately after return, unless the thread is pinned to a specific CPU. CPU numbering is the same as used by cpuset(2) and CPU affinity calls.

There are no error values as sched_getcpu() does not fail.

SEE ALSO

cpuset(2), cpuset_getaffinity(2), cpuset_setaffinity(2), pthread_getaffinity_np(3), pthread_setaffinity_np

STANDARDS

The sched_getcpu function originated in Linux. This implementation aims to be source-compatible with the Linux implementation.

HISTORY

The sched_getcpu function was introduced in FreeBSD 13.1.