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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.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd July 30, 1998
-.Dt PTHREAD_MUTEX_TRYLOCK 3
-.Os
-.Sh NAME
-.Nm pthread_mutex_trylock
-.Nd attempt to lock a mutex without blocking
-.Sh LIBRARY
-.Lb libpthread
-.Sh SYNOPSIS
-.In pthread.h
-.Ft int
-.Fn pthread_mutex_trylock "pthread_mutex_t *mutex"
-.Sh DESCRIPTION
-The
-.Fn pthread_mutex_trylock
-function locks
-.Fa mutex .
-If the mutex is already locked,
-.Fn pthread_mutex_trylock
-will not block waiting for the mutex, but will return an error condition.
-.Sh RETURN VALUES
-If successful,
-.Fn pthread_mutex_trylock
-will return zero, otherwise an error number will be returned to
-indicate the error.
-.Sh ERRORS
-The
-.Fn pthread_mutex_trylock
-function will fail if:
-.Bl -tag -width Er
-.It Bq Er EINVAL
-The value specified by
-.Fa mutex
-is invalid.
-.It Bq Er EBUSY
-.Fa Mutex
-is already locked.
-.El
-.Sh SEE ALSO
-.Xr pthread_mutex_destroy 3 ,
-.Xr pthread_mutex_init 3 ,
-.Xr pthread_mutex_lock 3 ,
-.Xr pthread_mutex_unlock 3
-.Sh STANDARDS
-The
-.Fn pthread_mutex_trylock
-function conforms to
-.St -p1003.1-96 .
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