extern void _wapi_shm_semaphores_init (void);
extern void _wapi_shm_semaphores_remove (void);
extern int _wapi_shm_sem_lock (int sem);
extern void _wapi_shm_semaphores_init (void);
extern void _wapi_shm_semaphores_remove (void);
extern int _wapi_shm_sem_lock (int sem);