ESMF_ArrayBundleHalo Subroutine

  subroutine ESMF_ArrayBundleHalo(arraybundle, routehandle, keywordEnforcer, &
    checkflag, rc)
!
! !ARGUMENTS:
    type(ESMF_ArrayBundle), intent(inout)          :: arraybundle
    type(ESMF_RouteHandle), intent(inout)          :: routehandle
type(ESMF_KeywordEnforcer), optional:: keywordEnforcer ! must use keywords below
    logical,                intent(in),   optional :: checkflag
    integer,                intent(out),  optional :: rc
!
! !STATUS:
! \begin{itemize}
! \item\apiStatusCompatibleVersion{5.2.0r}
! \end{itemize}
!
! !DESCRIPTION:
!   Execute a precomputed ArrayBundle halo operation for the Arrays in
!   {\tt arrayBundle}.
!
!   See {\tt ESMF\_ArrayBundleHaloStore()} on how to precompute 
!   {\tt routehandle}.
!
!   This call is {\em collective} across the current VM.
!
!   \begin{description}
!   \item [arraybundle]
!     {\tt ESMF\_ArrayBundle} containing data to be haloed.
!   \item [routehandle]
!     Handle to the precomputed Route.
!   \item [{[checkflag]}]
!     If set to {\tt .TRUE.} the input Array pairs will be checked for
!     consistency with the precomputed operation provided by {\tt routehandle}.
!     If set to {\tt .FALSE.} {\em (default)} only a very basic input check
!     will be performed, leaving many inconsistencies undetected. Set
!     {\tt checkflag} to {\tt .FALSE.} to achieve highest performance.
!   \item [{[rc]}]
!     Return code; equals {\tt ESMF\_SUCCESS} if there are no errors.
!   \end{description}
!
!EOP
!------------------------------------------------------------------------------
    integer                 :: localrc      ! local return code
    type(ESMF_Logical)      :: opt_checkflag! helper variable

    ! initialize return code; assume routine not implemented
    localrc = ESMF_RC_NOT_IMPL
    if (present(rc)) rc = ESMF_RC_NOT_IMPL

    ! Check init status of arguments, deal with optional ArrayBundle args
    ESMF_INIT_CHECK_DEEP_SHORT(ESMF_RouteHandleGetInit, routehandle, rc)
    ESMF_INIT_CHECK_DEEP_SHORT(ESMF_ArrayBundleGetInit, arraybundle, rc)
    
    ! Set default flags
    opt_checkflag = ESMF_FALSE
    if (present(checkflag)) opt_checkflag = checkflag
    
    ! Call into the C++ interface, which will sort out optional arguments
    call c_ESMC_ArrayBundleHalo(arraybundle, routehandle, opt_checkflag, &
      localrc)
    if (ESMF_LogFoundError(localrc, ESMF_ERR_PASSTHRU, &
      ESMF_CONTEXT, rcToReturn=rc)) return
    
    ! return successfully
    if (present(rc)) rc = ESMF_SUCCESS

  end subroutine ESMF_ArrayBundleHalo