4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2001,2004,2005,2006,2007 Develer S.r.l. (http://www.develer.com/)
30 * Copyright 1999,2000,2001 Bernie Innocenti <bernie@codewiz.org>
34 * \defgroup kern_sem Mutually exclusive semaphores
37 * \brief Mutually exclusive semaphores.
38 * Shared locking not supported in this implementation.
41 * \author Bernie Innocenti <bernie@codewiz.org>
43 * $WIZ$ module_name = "semaphores"
44 * $WIZ$ module_depends = "kernel"
45 * $WIZ$ module_configuration = "bertos/cfg/cfg_sem.h"
52 #include <cfg/compiler.h>
53 #include <struct/list.h>
59 typedef struct Semaphore
61 struct Process *owner;
67 * \name Process synchronization services
70 void sem_init(struct Semaphore *s);
71 bool sem_attempt(struct Semaphore *s);
72 void sem_obtain(struct Semaphore *s);
73 void sem_release(struct Semaphore *s);
75 /* \} */ //defgroup kern_sem
77 int sem_testRun(void);
78 int sem_testSetup(void);
79 int sem_testTearDown(void);
81 #endif /* KERN_SEM_H */