void cond_wait(smx_cond_t cond, smx_mutex_t mutex) [[block]];
void cond_wait_timeout(smx_cond_t cond, smx_mutex_t mutex, double timeout) [[block]];
void cond_wait(smx_cond_t cond, smx_mutex_t mutex) [[block]];
void cond_wait_timeout(smx_cond_t cond, smx_mutex_t mutex, double timeout) [[block]];
void sem_acquire(smx_sem_t sem) [[block]];
void sem_acquire_timeout(smx_sem_t sem, double timeout) [[block]];
void sem_acquire(smx_sem_t sem) [[block]];
void sem_acquire_timeout(smx_sem_t sem, double timeout) [[block]];