XBT_PUBLIC(int) MSG_comm_test(msg_comm_t comm);
XBT_PUBLIC(void) MSG_comm_destroy(msg_comm_t comm);
XBT_PUBLIC(MSG_error_t) MSG_comm_wait(msg_comm_t comm,double timeout);
+XBT_PUBLIC(void) MSG_comm_waitall(msg_comm_t *comm,int nb_elem, double timeout);
XBT_PUBLIC(int) MSG_task_listen(const char *alias);