/[libspopc]/mutex.h
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Thu Oct 8 15:37:49 2009 UTC (11 years ago) by ben
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1 ben 1 /* this is mutex.h 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 ben 2 * more information on http://herewe.servebeer.com/libspopc/
8 ben 1 *
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     #ifndef MUTEX_H
25     #define MUTEX_H
26    
27     #include <semaphore.h>
28    
29     typedef sem_t mutex;
30    
31     /* initializes a thread-wide mutex */
32     int mutex_init(mutex* id);
33    
34     /* acquire the given mutex to enter in a critical section */
35     int mutex_in (mutex* id);
36    
37     /* quit the critical section, by releasing the given mutex */
38     int mutex_out (mutex* id);
39    
40     /* clean the mutex, thus re-initable by mutex_init() */
41     int mutex_clean(mutex* id);
42    
43     #endif

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