989d921f5d
I'm very pleased to announce the release of our new website and documentation using the new toolchain with Hugo and AsciiDoctor. To get more information about the new toolchain please read the FreeBSD Documentation Project Primer[1], Hugo docs[2] and AsciiDoctor docs[3]. Acknowledgment: Benedict Reuschling <bcr@> Glen Barber <gjb@> Hiroki Sato <hrs@> Li-Wen Hsu <lwhsu@> Sean Chittenden <seanc@> The FreeBSD Foundation [1] https://docs.FreeBSD.org/en/books/fdp-primer/ [2] https://gohugo.io/documentation/ [3] https://docs.asciidoctor.org/home/ Approved by: doceng, core
58 lines
2 KiB
Groff
58 lines
2 KiB
Groff
.\" %FreeBSD: src/lib/libc/sys/sched_yield.2,v 1.13 2004/07/02 23:52:13 ru Exp %
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.\" Copyright (c) 1998 HD Associates, Inc.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.Dd March 12, 1998
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.Dt SCHED_YIELD 2
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.Os
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.Sh 名称
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.Nm sched_yield
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.Nd プロセッサを明け渡す
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.Sh ライブラリ
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.Lb libc
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.Sh 書式
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.In sched.h
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.Ft int
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.Fn sched_yield void
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.Sh 解説
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.Fn sched_yield
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システムコールは、実行中のプロセスが再びプロセスリストの先頭になるまで、
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プロセッサを放棄させます。
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引数はありません。
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.Sh 戻り値
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.Rv -std sched_yield
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.Sh エラー
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処理に失敗すると、
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.Va errno
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に対応する値が設定されます:
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.Bl -tag -width Er
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.It Bq Er ENOSYS
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システムがこの機能をサポートするように構成されていません。
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.El
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.Sh 規格
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.Fn sched_yield
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システムコールは
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.St -p1003.1b-93
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に適合しています。
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