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25caac4d45
Moved from libsys to libc for stable/14. Reviewed by: kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D47556 (cherry picked from commit 36887e04947fedfebb9b648fadd0dd6cc03142ea)
51 lines
1.1 KiB
Groff
51 lines
1.1 KiB
Groff
.\" SPDX-License-Identifier: BSD-2-Clause
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.\"
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.\" Copyright (c) 2024 The FreeBSD Foundation
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.\"
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.\" This documentation was written by Ed Maste <emaste@FreeBSD.org>
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.\" under sponsorship from the FreeBSD Foundation.
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.\"
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.Dd November 13, 2024
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.Dt SCHED_GETCPU 3
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.Os
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.Sh NAME
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.Nm sched_getcpu
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.Nd get current CPU
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In sched.h
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.Ft int
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.Fn sched_getcpu void
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.Sh DESCRIPTION
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The
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.Fn sched_getcpu
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function returns the current CPU on which the calling thread is running.
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.Sh RETURN VALUES
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.Fn sched_getcpu
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returns the 0-based index of the current CPU at the time of the call.
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The value may become invalid immediately after return, unless the thread is
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pinned to a specific CPU.
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CPU numbering is the same as used by
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.Xr cpuset 2
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and CPU affinity calls.
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.Pp
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There are no error values as
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.Fn sched_getcpu
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does not fail.
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.Sh SEE ALSO
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.Xr cpuset 2 ,
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.Xr cpuset_getaffinity 2 ,
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.Xr cpuset_setaffinity 2 ,
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.Xr pthread_getaffinity_np 3 ,
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.Xr pthread_setaffinity_np
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.Sh STANDARDS
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The
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.Nm
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function originated in Linux.
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This implementation aims to be source-compatible with the Linux implementation.
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.Sh HISTORY
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The
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.Nm
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function was introduced in
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.Fx 13.1 .
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