boost::intrusive_ptr<simgrid::kernel::activity::ActivityImpl> comm_irecv(smx_actor_t receiver, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size, simix_match_func_t match_fun, simix_copy_data_func_t copy_data_fun, void* data, double rate);
int comm_waitany(simgrid::kernel::activity::CommImpl** comms, size_t count, double timeout) [[block]];
void comm_wait(simgrid::kernel::activity::CommImpl* comm, double timeout) [[block]];
-int comm_test(simgrid::kernel::activity::CommImpl* comm) [[block]];
+bool comm_test(simgrid::kernel::activity::CommImpl* comm) [[block]];
int comm_testany(simgrid::kernel::activity::CommImpl** comms, size_t count) [[block]];
void mutex_lock(smx_mutex_t mutex) [[block]];