Move pthread* manpages to lib/libpthread as they are not libc_r specific.
[dragonfly.git] / lib / libpthread / pthread_mutex_unlock.3
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1.\" Copyright (c) 1997 Brian Cully <shmit@kublai.com>
2.\" All rights reserved.
3.\"
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28.\" $FreeBSD: src/lib/libc_r/man/pthread_mutex_unlock.3,v 1.5.2.6 2002/07/15 07:59:53 maxim Exp $
1de703da 29.\" $DragonFly: src/lib/libc_r/man/pthread_mutex_unlock.3,v 1.2 2003/06/17 04:26:48 dillon Exp $
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30.\"
31.Dd July 30, 1998
32.Dt PTHREAD_MUTEX_UNLOCK 3
33.Os
34.Sh NAME
35.Nm pthread_mutex_unlock
36.Nd unlock a mutex
37.Sh LIBRARY
38.Lb libc_r
39.Sh SYNOPSIS
40.In pthread.h
41.Ft int
42.Fn pthread_mutex_unlock "pthread_mutex_t *mutex"
43.Sh DESCRIPTION
44If the current thread holds the lock on
45.Fa mutex ,
46then the
47.Fn pthread_mutex_unlock
48function unlocks
49.Fa mutex .
50.Sh RETURN VALUES
51If successful,
52.Fn pthread_mutex_unlock
53will return zero, otherwise an error number will be returned to
54indicate the error.
55.Sh ERRORS
56.Fn pthread_mutex_unlock
57will fail if:
58.Bl -tag -width Er
59.It Bq Er EINVAL
60The value specified by
61.Fa mutex
62is invalid.
63.It Bq Er EPERM
64The current thread does not hold a lock on
65.Fa mutex .
66.El
67.Sh SEE ALSO
68.Xr pthread_mutex_destroy 3 ,
69.Xr pthread_mutex_init 3 ,
70.Xr pthread_mutex_lock 3 ,
71.Xr pthread_mutex_trylock 3
72.Sh STANDARDS
73.Fn pthread_mutex_unlock
74conforms to
75.St -p1003.1-96 .