bool comm_test(simgrid::kernel::activity::CommImpl* comm) [[block]];
int comm_testany(simgrid::kernel::activity::CommImpl** comms, size_t count) [[block]];
-void cond_wait(smx_cond_t cond, smx_mutex_t mutex) [[block]];
int cond_wait_timeout(smx_cond_t cond, smx_mutex_t mutex, double timeout) [[block]];
int sem_acquire_timeout(smx_sem_t sem, double timeout) [[block]];