precon_fctry.f90

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submodule(precon) precon_fctry
  use identity, only : ident_t
  use device_identity, only : device_ident_t
  use jacobi, only : jacobi_t
  use sx_jacobi, only : sx_jacobi_t
  use device_jacobi, only : device_jacobi_t
  use hsmg, only : hsmg_t
  use phmg, only : phmg_t
  use utils, only : neko_type_error
  use neko_config, only : neko_bcknd_device, neko_bcknd_sx
  implicit none
 
  ! List of all possible types created by the factory routine
  character(len=20) :: PC_KNOWN_TYPES(4) = [character(len=20) :: &
       "jacobi", &
       "hsmg", &
       "phmg", &
       "ident"]
 
contains
 
  module subroutine precon_factory(pc, type_name)
    class(pc_t), allocatable, intent(inout) :: pc
    character(len=*), intent(in) :: type_name
    character(len=:), allocatable :: type_string
 
    if (allocated(pc)) then
       call precon_destroy(pc)
       deallocate(pc)
    end if
 
    select case (trim(type_name))
    case ('jacobi')
       if (neko_bcknd_sx .eq. 1) then
          allocate(sx_jacobi_t::pc)
       else if (neko_bcknd_device .eq. 1) then
          allocate(device_jacobi_t::pc)
       else
          allocate(jacobi_t::pc)
       end if
    case ('hsmg')
       allocate(hsmg_t::pc)
    case ('phmg')
       allocate(phmg_t::pc)
    case('ident')
       if (neko_bcknd_device .eq. 1) then
          allocate(device_ident_t::pc)
       else
          allocate(ident_t::pc)
       end if
    case default
       call neko_type_error("preconditioner", type_name, pc_known_types)
    end select
 
  end subroutine precon_factory
 
  module subroutine precon_destroy(pc)
    class(pc_t), allocatable, intent(inout) :: pc
 
    if (allocated(pc)) then
       select type (pcp => pc)
       type is (jacobi_t)
          call pcp%free()
       type is (sx_jacobi_t)
          call pcp%free()
       type is (device_jacobi_t)
          call pcp%free()
       type is (hsmg_t)
          call pcp%free()
       type is (phmg_t)
          call pcp%free()
       end select
    end if
 
  end subroutine precon_destroy
 
end submodule precon_fctry