static int keyval_create(MPI_Comm_copy_attr_function* copy_fn, MPI_Comm_delete_attr_function* delete_fn, int* keyval,
void* extra_state);
static int keyval_free(int* keyval);
- static void keyval_cleanup();
void add_rma_win(MPI_Win win);
void remove_rma_win(MPI_Win win);