semaphore.h

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/*
 * Amazon FreeRTOS+POSIX V1.0.0
 * Copyright (C) 2018 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * http://aws.amazon.com/freertos
 * http://www.FreeRTOS.org
 */

#ifndef _FREERTOS_POSIX_SEMAPHORE_H_
#define _FREERTOS_POSIX_SEMAPHORE_H_

/* FreeRTOS+POSIX includes. */
#include "FreeRTOS_POSIX/time.h"

typedef void * sem_t;

int sem_destroy( sem_t * sem );

int sem_getvalue( sem_t * sem,
                  int * sval );

int sem_init( sem_t * sem,
              int pshared,
              unsigned value );

int sem_post( sem_t * sem );

int sem_timedwait( sem_t * sem,
                   const struct timespec * abstime );

int sem_trywait( sem_t * sem );

int sem_wait( sem_t * sem );

#endif /* ifndef _FREERTOS_POSIX_SEMAPHORE_H_ */