void sem_acquire(smx_sem_t sem) [[block]];
int sem_acquire_timeout(smx_sem_t sem, double timeout) [[block]];
-sg_size_t storage_read(surf_storage_t st, sg_size_t size) [[block]];
-sg_size_t storage_write(surf_storage_t st, sg_size_t size) [[block]];
+sg_size_t io_wait(boost::intrusive_ptr<simgrid::kernel::activity::ActivityImpl> io) [[block]];
int mc_random(int min, int max);