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-.\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>.
-.\" 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(s), this list of conditions and the following disclaimer as
-.\" the first lines of this file unmodified other than the possible
-.\" addition of one or more copyright notices.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice(s), this list of conditions and the following disclaimer in
-.\" the documentation and/or other materials provided with the
-.\" distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``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 COPYRIGHT HOLDER(S) 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.
-.\"
-.\" $FreeBSD$
-.Dd February 15, 2000
-.Dt SEM_POST 3
-.Os
-.Sh NAME
-.Nm sem_post
-.Nd increment (unlock) a semaphore
-.Sh LIBRARY
-.Lb libpthread
-.Sh SYNOPSIS
-.In semaphore.h
-.Ft int
-.Fn sem_post "sem_t *sem"
-.Sh DESCRIPTION
-The
-.Fn sem_post
-function increments (unlocks) the semaphore pointed to by
-.Fa sem .
-If there are threads blocked on the semaphore when
-.Fn sem_post
-is called, then the highest priority thread that has been blocked the longest on
-the semaphore will be allowed to return from
-.Fn sem_wait .
-.Pp
-The
-.Fn sem_post
-function is signal-reentrant and may be called within signal handlers.
-.Sh RETURN VALUES
-.Rv -std sem_post
-.Sh ERRORS
-The
-.Fn sem_post
-function will fail if:
-.Bl -tag -width Er
-.It Bq Er EINVAL
-.Fa sem
-points to an invalid semaphore.
-.El
-.Sh SEE ALSO
-.Xr sem_trywait 3 ,
-.Xr sem_wait 3 ,
-.Xr sem 4
-.Sh STANDARDS
-The
-.Fn sem_post
-function conforms to
-.St -p1003.1-96 .
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