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authorphk <phk@FreeBSD.org>1998-07-31 09:09:19 +0000
committerphk <phk@FreeBSD.org>1998-07-31 09:09:19 +0000
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I've put together man pages for the pthread_cleanup, pthread_cond, and
pthread_mutex routines. I've also tweaked pthread_create.3 to point to pthread_cleanup_push(3) and pthread_cleanup_pop(3). PR: 7450 Submitted by: Brian Cully <shmit@kublai.com>
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+.\" Copyright (c) 1997 Brian Cully <shmit@kublai.com>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the author nor the names of any co-contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd July 28, 1998
+.Dt PTHREAD_COND_WAIT 3
+.Os BSD 4
+.Sh NAME
+.Nm pthread_cond_wait
+.Nd wait on a condition variable
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_cond_wait "pthread_cond_t *cond" "pthread_mutex_t *mutex"
+.Sh DESCRIPTION
+The
+.Fn pthread_cond_wait
+function atomically blocks the current thread waiting on the condition
+variable specified by
+.Fa cond ,
+and unblocks the mutex specified by
+.Fa mutex .
+The waiting thread unblocks only after another thread calls
+.Xr pthread_cond_signal 3 , or
+.Xr pthread_cond_broadcast 3
+with the same condition variable, and the current thread reaquires the lock
+on
+.Fa mutex .
+.Sh RETURN VALUES
+If successful, the
+.Fn pthread_cond_wait
+function will return zero. Otherwise an error number will be returned to
+indicate the error.
+.Sh ERRORS
+.Fn pthread_cond_wait
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The value specified by
+.Fa cond
+or the value specified by
+.Fa attr
+is invalid.
+.El
+.Pp
+.Sh SEE ALSO
+.Xr pthread_cond_init 3 ,
+.Xr pthread_cond_destroy 3 ,
+.Xr pthread_cond_timedwait 3 ,
+.Xr pthread_cond_signal 3 ,
+.Xr pthread_cond_broadcast 3
+.Sh STANDARDS
+.Fn pthread_cond_wait
+is expected to conform to IEEE
+.Pq Dq Tn POSIX
+Std 1003.1c when it is published.
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