1!
2! Copyright (C) by Argonne National Laboratory
3!     See COPYRIGHT in top-level directory
4!
5
6subroutine MPI_Type_get_name_f08(datatype, type_name, resultlen, ierror)
7    use, intrinsic :: iso_c_binding, only : c_int, c_char
8    use :: mpi_f08, only : MPI_Datatype
9    use :: mpi_f08, only : MPI_MAX_OBJECT_NAME
10    use :: mpi_c_interface, only : c_Datatype
11    use :: mpi_c_interface, only : MPIR_Type_get_name_c
12    use :: mpi_c_interface, only : MPIR_Fortran_string_c2f
13
14    implicit none
15
16    type(MPI_Datatype), intent(in) :: datatype
17    character(len=MPI_MAX_OBJECT_NAME), intent(out) :: type_name
18    integer, intent(out) :: resultlen
19    integer, optional, intent(out) :: ierror
20
21    integer(c_Datatype) :: datatype_c
22    character(kind=c_char) :: type_name_c(MPI_MAX_OBJECT_NAME+1)
23    integer(c_int) :: resultlen_c
24    integer(c_int) :: ierror_c
25
26    if (c_int == kind(0)) then
27        ierror_c = MPIR_Type_get_name_c(datatype%MPI_VAL, type_name_c, resultlen)
28    else
29        datatype_c = datatype%MPI_VAL
30        ierror_c = MPIR_Type_get_name_c(datatype_c, type_name_c, resultlen_c)
31        resultlen = resultlen_c
32    end if
33
34    call MPIR_Fortran_string_c2f(type_name_c, type_name)
35
36    if (present(ierror)) ierror = ierror_c
37
38end subroutine MPI_Type_get_name_f08
39