82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
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/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright 2001,2004,2005,2006,2007 Develer S.r.l. (http://www.develer.com/)
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* Copyright 1999,2000,2001 Bernie Innocenti <bernie@codewiz.org>
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*
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* -->
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*
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* \defgroup kern_sem Mutually exclusive semaphores
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* \ingroup kern
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* \{
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* \brief Mutually exclusive semaphores.
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* Shared locking not supported in this implementation.
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*
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*
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* \author Bernie Innocenti <bernie@codewiz.org>
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*
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* $WIZ$ module_name = "semaphores"
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* $WIZ$ module_depends = "kernel"
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* $WIZ$ module_configuration = "bertos/cfg/cfg_sem.h"
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*/
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#ifndef KERN_SEM_H
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#define KERN_SEM_H
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#include <cfg/compiler.h>
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#include <struct/list.h>
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/* Fwd decl */
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struct Process;
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typedef struct Semaphore
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{
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struct Process *owner;
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List wait_queue;
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int nest_count;
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} Semaphore;
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/**
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* \name Process synchronization services
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* \{
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*/
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void sem_init(struct Semaphore *s);
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bool sem_attempt(struct Semaphore *s);
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void sem_obtain(struct Semaphore *s);
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void sem_release(struct Semaphore *s);
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/* \} */
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/* \} */ //defgroup kern_sem
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int sem_testRun(void);
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int sem_testSetup(void);
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int sem_testTearDown(void);
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#endif /* KERN_SEM_H */
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