+MPI_CALL(XBT_PUBLIC int, MPI_Request_get_status, (MPI_Request request, int* flag, MPI_Status* status));
+MPI_CALL(XBT_PUBLIC int, MPI_Grequest_start,
+ (MPI_Grequest_query_function * query_fn, MPI_Grequest_free_function* free_fn,
+ MPI_Grequest_cancel_function* cancel_fn, void* extra_state, MPI_Request* request));
+MPI_CALL(XBT_PUBLIC int, MPI_Grequest_complete, (MPI_Request request));
+MPI_CALL(XBT_PUBLIC int, MPI_Status_set_cancelled, (MPI_Status * status, int flag));
+MPI_CALL(XBT_PUBLIC int, MPI_Status_set_elements, (MPI_Status * status, MPI_Datatype datatype, int count));