#ifndef _SEMAPHORE_HH_
#define _SEMAPHORE_HH_

#include <pthread.h>

class Semaphore
{
public:
  Semaphore();
  Semaphore( int value );
  ~Semaphore();

  void up() ;
  void bdown() ;
  void nbdown() ;
  void set( int value ) ;
  int get() ;

private:
  int value;
  pthread_cond_t *condition;
  pthread_mutex_t *mutex;
};

#endif /* _SEMAPHORE_HH_ */