| | 1 | .\" Copyright (c) 1997 Brian Cully <shmit@kublai.com> |
| | 2 | .\" All rights reserved. |
| | 3 | .\" |
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| | 5 | .\" modification, are permitted provided that the following conditions |
| | 6 | .\" are met: |
| | 7 | .\" 1. Redistributions of source code must retain the above copyright |
| | 8 | .\" notice, this list of conditions and the following disclaimer. |
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| | 10 | .\" notice, this list of conditions and the following disclaimer in the |
| | 11 | .\" documentation and/or other materials provided with the distribution. |
| | 12 | .\" 3. Neither the name of the author nor the names of any co-contributors |
| | 13 | .\" may be used to endorse or promote products derived from this software |
| | 14 | .\" without specific prior written permission. |
| | 15 | .\" |
| | 16 | .\" THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND |
| | 17 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 18 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 19 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| | 26 | .\" SUCH DAMAGE. |
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| | 28 | .\" $FreeBSD: src/lib/libc_r/man/pthread_mutex_lock.3,v 1.5.2.4 2001/08/17 15:42:51 ru Exp $ |
| | 29 | .\" |
| | 30 | .Dd July 30, 1998 |
| | 31 | .Dt PTHREAD_MUTEX_LOCK 3 |
| | 32 | .Os |
| | 33 | .Sh NAME |
| | 34 | .Nm pthread_mutex_lock |
| | 35 | .Nd lock a mutex |
| | 36 | .Sh SYNOPSIS |
| | 37 | .Fd #include <pthread.h> |
| | 38 | .Ft int |
| | 39 | .Fo pthread_mutex_lock |
| | 40 | .Fa "pthread_mutex_t *mutex" |
| | 41 | .Fc |
| | 42 | .Sh DESCRIPTION |
| | 43 | The |
| | 44 | .Fn pthread_mutex_lock |
| | 45 | function locks |
| | 46 | .Fa mutex . |
| | 47 | If the mutex is already locked, the calling thread will block until the |
| | 48 | mutex becomes available. |
| | 49 | .Sh RETURN VALUES |
| | 50 | If successful, |
| | 51 | .Fn pthread_mutex_lock |
| | 52 | will return zero. |
| | 53 | Otherwise, an error number will be returned to indicate the error. |
| | 54 | .Sh ERRORS |
| | 55 | .Fn pthread_mutex_lock |
| | 56 | will fail if: |
| | 57 | .Bl -tag -width Er |
| | 58 | .It Bq Er EDEADLK |
| | 59 | A deadlock would occur if the thread blocked waiting for |
| | 60 | .Fa mutex . |
| | 61 | .It Bq Er EINVAL |
| | 62 | The value specified by |
| | 63 | .Fa mutex |
| | 64 | is invalid. |
| | 65 | .El |
| | 66 | .Sh SEE ALSO |
| | 67 | .Xr pthread_mutex_destroy 3 , |
| | 68 | .Xr pthread_mutex_init 3 , |
| | 69 | .Xr pthread_mutex_trylock 3 , |
| | 70 | .Xr pthread_mutex_unlock 3 |
| | 71 | .Sh STANDARDS |
| | 72 | .Fn pthread_mutex_lock |
| | 73 | conforms to |
| | 74 | .St -p1003.1-96 . |
projects / apple / libc.git / blame_incremental