Query_function    219 ompi/mpi/cxx/request.h     static Grequest Start(Query_function *, Free_function *,
Query_function    231 ompi/mpi/cxx/request.h         Grequest::Query_function *id_cxx_query_fn;
Query_function    342 ompi/mpi/cxx/request_inln.h MPI::Grequest::Start(Query_function *query_fn, Free_function *free_fn,