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36 lines
755 B
C
36 lines
755 B
C
/**
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* Semaphore data struct and prototypes
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*
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* Copyright (C) 2013 INRIA.
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*
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* This file subject to the terms and conditions of the GNU Lesser General
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* Public License. See the file LICENSE in the top level directory for more
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* details.
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*
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* @ingroup sixlowpan
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* @{
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* @file semaphore.h
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* @brief data struct and prototypes for semaphores
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* @author Martin Lenders <mlenders@inf.fu-berlin.de>
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* @author Oliver Hahm <oliver.hahm@inria.fr>
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* @}
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*/
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#ifndef SEMAPHORE_H
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#define SEMAPHORE_H
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#include <stdint.h>
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#include <mutex.h>
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typedef struct sem_t {
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int8_t value;
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int8_t locked;
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mutex_t mutex;
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} sem_t;
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void sem_init(sem_t *sem, int8_t value);
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int sem_wait(sem_t *sem);
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int sem_signal(sem_t *sem);
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#endif /* SEMAPHORE_H*/
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