d1534953b1
Do not begin a line with single quote character. Submitted by: Kazuo Horikawa <k-horik@yk.rim.or.jp>
77 lines
2.5 KiB
Groff
77 lines
2.5 KiB
Groff
.\" Copyright (c) 1998 Alex Nash
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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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.\" %Id: pthread_rwlock_unlock.3,v 1.1 1998/09/07 19:01:43 alex Exp %
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.\"
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.Dd August 4, 1998
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.Dt PTHREAD_RWLOCK_UNLOCK 3
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.Os
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.Sh 名称
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.Nm pthread_rwlock_unlock
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.Nd 読み書きロックの解除
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.Sh 書式
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.Fd #include <pthread.h>
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.Ft int
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.Fn pthread_rwlock_unlock "pthread_rwlock_t *lock"
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.Sh 解説
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.Fn pthread_rwlock_unlock
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関数は、
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.Fn pthread_rwlock_rdlock ,
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.Fn pthread_rwlock_wrlock ,
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.Fn pthread_rwlock_tryrdlock
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あるいは
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.Fn pthread_rwlock_trywrlock
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で以前に取得した読み書きロックを解除します。
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.Sh 戻り値
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問題がない場合、
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.Fn pthread_rwlock_unlock
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関数はゼロを戻します。問題がある場合は、そのエラーを示すエラー番号を戻します。
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.Pp
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呼び出しスレッドが
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.Fa lock
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を取得していない場合、結果は不定になります。
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.Sh 関連項目
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.Xr pthread_rwlock_rdlock 3 ,
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.Xr pthread_rwlock_wrlock 3
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.Sh 規格
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.Fn pthread_rwlock_unlock
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関数は、
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.St -susv2
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に準拠する見込みです。
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.SH エラー
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.Fn pthread_rwlock_unlock
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関数は、以下のような場合にエラーとなります。
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.Bl -tag -width Er
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.It Bq Er EINVAL
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.Fa lock
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で指定されている値が正しくない場合。
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.It Bq Er EPERM
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現在のスレッドが読み書きロックを取得していない場合。
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.El
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.Pp
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.Sh 歴史
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.Fn pthread_rwlock_unlock
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関数は、
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.Fx 3.0
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に追加されました。
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