#ifndef _SVSEM_UTIL_H
#define _SVSEM_UTIL_H  

#include "usg_common.h"

class SvsemUtil {
public:
  static int get(key_t key, int nsems, unsigned short * arr_val) ;
  /* 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 */
  static int dec(int semId)  ;

  static int dec_nowait(int semId)  ;

  static int dec_timeout(const int semId, const struct timespec *timeout) ;


  /**
   * 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.
   */
  static int zero(int semId) ; 


  static int zero_nowait(int semId) ;

  static int zero_timeout(const int semId, const struct timespec *timeout)  ;


  /* Release semaphore - increment it by 1 */
  static int inc(int semId) ;


  static int set(int semId, int val) ;




  static int cond_wait(int semid ) ;
  static int cond_signal(int semid ) ;
  static void remove(int semid) ;
};

#endif