#ifndef _SVSEM_UTIL_H
#define _SVSEM_UTIL_H  

#include "usg_common.h"

int svsem_get(key_t key, unsigned int value) ;
/* Reserve semaphore (blocking), return 0 on success, or -1 with 'errno'
   set to EINTR if operation was interrupted by a signal handler */

/* Reserve semaphore - decrement it by 1 */
int svsem_wait(int semid)  ;

int svsem_trywait(int semid)  ;

int svsem_timedwait(int semid, struct timespec *timeout) ;

int svsem_uni_wait(int semid) ;
/* Release semaphore - increment it by 1 */
int svsem_post(int semid) ;



int svsem_cond_wait(int semid ) ;
int svsem_cond_signal(int semid ) ;

/**
 * If sem_op equals 0, the value of the semaphore is checked to see whether it
 * currently equals 0. If it does, the operation completes immediately; otherwise,
 * semop() blocks until the semaphore value becomes 0.
 */
int svsem_zero(int semid) ; 


int svsem_zero_nowait(int semid) ;

int svsem_zero_timeout(int semid, struct timespec *timeout)  ;





int svsem_set(int semid, int val) ;




void svsem_remove(int semid) ;
#endif