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//
// semaphore.h
//
// POSIX semaphore library
//
// Copyright (C) 2002 Michael Ringgaard. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright 
//    notice, this list of conditions and the following disclaimer.  
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.  
// 3. Neither the name of the project nor the names of its contributors
//    may be used to endorse or promote products derived from this software
//    without specific prior written permission. 
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
// SUCH DAMAGE.
// 

#if _MSC_VER > 1000
#pragma once
#endif

#ifndef SEMAPHORE_H
#define SEMAPHORE_H

#include <sys/types.h>

#ifndef _TIMESPEC_DEFINED
#define _TIMESPEC_DEFINED
struct timespec {
  long tv_sec;
  long tv_nsec;
};
#endif

#ifndef _SEM_T_DEFINED
#define _SEM_T_DEFINED
typedef handle_t sem_t;
#endif

#define _POSIX_SEMAPHORES

#define SEM_FAILED (-1)

#ifdef  __cplusplus
extern "C" {
#endif

int sem_init(sem_t *sem, int pshared, unsigned int value);
int sem_destroy(sem_t *sem);
int sem_trywait(sem_t *sem);
int sem_wait(sem_t * sem);
int sem_timedwait(sem_t *sem, const struct timespec *abstime);
int sem_post(sem_t *sem);
int sem_post_multiple(sem_t *sem, int count);
int sem_open(const char *name, int oflag, int mode, unsigned int value);
int sem_close(sem_t *sem);
int sem_unlink(const char *name);
int sem_getvalue(sem_t *sem, int *sval);

#ifdef  __cplusplus
}
#endif

#endif