80 lines
2.7 KiB
Groff
80 lines
2.7 KiB
Groff
.\" 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 29, 1998
|
|
.Dt PTHREAD_MUTEX_INIT 3
|
|
.Os BSD 4
|
|
.Sh NAME
|
|
.Nm pthread_mutex_init
|
|
.Nd create a mutex
|
|
.Sh LIBRARY
|
|
.Lb libc_r
|
|
.Sh SYNOPSIS
|
|
.Fd #include <pthread.h>
|
|
.Ft int
|
|
.Fn pthread_mutex_init "pthread_mutex_t *mutex" "const pthread_mutexattr_t *attr"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn pthread_mutex_init
|
|
function creates a new mutex, with attributes specified with
|
|
.Fa attr .
|
|
If
|
|
.Fa attr
|
|
is NULL the default attributes are used.
|
|
.Sh RETURN VALUES
|
|
If successful,
|
|
.Fn pthread_mutex_init
|
|
will return zero and put the new mutex id into
|
|
.Fa mutex ,
|
|
otherwise an error number will be returned to indicate the error.
|
|
.Sh ERRORS
|
|
.Fn pthread_mutex_init
|
|
will fail if:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
The value specified by
|
|
.Fa attr
|
|
is invalid.
|
|
.It Bq Er ENOMEM
|
|
The process cannot allocate enough memory to create another mutex.
|
|
.It Bq Er EAGAIN
|
|
The temporarily lacks the resources to create another mutex.
|
|
.El
|
|
.Pp
|
|
.Sh SEE ALSO
|
|
.Xr pthread_mutex_destroy 3 ,
|
|
.Xr pthread_mutex_lock 3 ,
|
|
.Xr pthread_mutex_trylock 3 ,
|
|
.Xr pthread_mutex_unlock 3
|
|
.Sh STANDARDS
|
|
.Fn pthread_mutex_init
|
|
conforms to ISO/IEC 9945-1 ANSI/IEEE
|
|
.Pq Dq Tn POSIX
|
|
Std 1003.1 Second Edition 1996-07-12.
|