/[libspopc]/mutex.c
ViewVC logotype

Annotation of /mutex.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1 - (hide annotations)
Thu Oct 8 11:53:59 2009 UTC (11 years ago) by ben
File MIME type: text/plain
File size: 1609 byte(s)
import from old repo, version 0.10.2
1 ben 1 /* this is mutex.c file, part of the libspopc library sources
2     * copyright © 2002- Benoit Rouits <brouits@free.fr>
3     * released under the terms of the GNU Lesser General Public Licence.
4     *
5     * libspopc offers simple API for a pop3 client.
6     * See RFC 1725 for pop3 specifications.
7     * more information on http://brouits.free.fr/libspopc/
8     *
9     * This library is free software; you can redistribute it and/or
10     * modify it under the terms of the GNU Lesser General Public
11     * License as published by the Free Software Foundation; either
12     * version 2.1 of the License, or (at your option) any later version.
13     *
14     * This library is distributed in the hope that it will be useful,
15     * but WITHOUT ANY WARRANTY; without even the implied warranty of
16     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17     * Lesser General Public License for more details.
18     *
19     * You should have received a copy of the GNU Lesser General Public
20     * License along with this library; if not, write to the Free Software
21     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22     */
23    
24     #include <semaphore.h>
25     #include "mutex.h"
26    
27     /* initializes a thread-wide mutex */
28     int mutex_init(mutex* id)
29     {
30     return sem_init(id, 0, 1);
31     }
32    
33     /* acquire the given mutex to enter in a critical section */
34     int mutex_in (mutex* id)
35     {
36     return sem_wait(id);
37     /* this is a blocking call */
38     }
39    
40     /* quit the critical section, by releasing the given mutex */
41     int mutex_out (mutex* id)
42     {
43     return sem_post(id);
44     }
45    
46     /* clean given mutex, thus re-initable by mutex_init() */
47     int mutex_clean(mutex* id)
48     {
49     return sem_destroy(id);
50     }
51    

  ViewVC Help
Powered by ViewVC 1.1.26