sem.h

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/*
 Copyright (C) 2009 Sung Ho Park
 Contact: ubinos.org@gmail.com
 
 This file is part of the itf_ubinos component of the Ubinos.
 
 GNU General Public License Usage
 This file may be used under the terms of the GNU
 General Public License version 3.0 as published by the Free Software
 Foundation and appearing in the file license_gpl3.txt included in the
 packaging of this file. Please review the following information to
 ensure the GNU General Public License version 3.0 requirements will be
 met: http://www.gnu.org/copyleft/gpl.html.
 
 GNU Lesser General Public License Usage
 Alternatively, this file may be used under the terms of the GNU Lesser
 General Public License version 2.1 as published by the Free Software
 Foundation and appearing in the file license_lgpl.txt included in the
 packaging of this file. Please review the following information to
 ensure the GNU Lesser General Public License version 2.1 requirements
 will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 
 Commercial Usage
 Alternatively, licensees holding valid commercial licenses may
 use this file in accordance with the commercial license agreement
 provided with the software or, alternatively, in accordance with the
 terms contained in a written agreement between you and rightful owner.
 */
 
#ifndef UBIK_SEM_H_
#define UBIK_SEM_H_
 
#ifdef  __cplusplus
extern "C"
{
#endif
 
#include <ubinos_config.h>
#include <ubinos/type.h>
 
#include "task.h"
 
#define SEM_OPT__IGNOREOVERFLOW     0x80
 
typedef struct __sem_tip_t
{
    unsigned int type :8; 
    unsigned int valid :1; 
    unsigned int reserved :7; 
    unsigned int reserved2 :16; 
} _sem_tip_t;
 
typedef _sem_tip_t * sem_pt;
 
int sem_create(sem_pt * sem_p);
 
int semb_create(sem_pt * sem_p);
 
int sem_create_ext(sem_pt * sem_p, unsigned int initcount,
        unsigned int maxcount, unsigned int option);
 
int sem_delete(sem_pt * sem_p);
 
int sem_take(sem_pt sem);
 
int sem_take_timed(sem_pt sem, unsigned int tick);
 
int sem_take_timedms(sem_pt sem, unsigned int timems);
 
int sem_give(sem_pt sem);
 
int sem_clear(sem_pt sem);
 
int sem_setsender(sem_pt sem, task_pt task);
 
int sem_getcount(sem_pt sem, unsigned int * count_p);
 
#ifdef  __cplusplus
}
#endif
 
#endif /* UBIK_SEM_H_ */