psblas3/base/tools/psb_cdtransfer.f90

!!$ 
!!$              Parallel Sparse BLAS  v2.0
!!$    (C) Copyright 2006 Salvatore Filippone    University of Rome Tor Vergata
!!$                       Alfredo Buttari        University of Rome Tor Vergata
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! File: psb_cdtransfer.f90
!
! Subroutine: psb_cdtransfer
!   Transfers data and allocation from in to out (just like MOVE_ALLOC). 
! 
! Parameters: 
!    desc_in  - type(<psb_desc_type>).         The communication descriptor to be transferred.
!    desc_out - type(<psb_desc_type>).         The output communication descriptor.
!    info     - integer.                       Eventually returns an error code.
subroutine psb_cdtransfer(desc_in, desc_out, info)

  use psb_descriptor_type
  use psb_serial_mod
  use psb_realloc_mod
  use psb_const_mod
  use psb_error_mod
  use psb_penv_mod

  implicit none
  !....parameters...

  type(psb_desc_type), intent(inout)  :: desc_in
  type(psb_desc_type), intent(inout)  :: desc_out
  integer, intent(out)                :: info

  !locals
  integer             :: np,me,ictxt, err_act
  logical, parameter  :: debug=.false.,debugprt=.false.
  character(len=20)   :: name

  if (debug) write(0,*) me,'Entered CDTRANSFER'
  if (psb_get_errstatus().ne.0) return 
  info = 0
  call psb_erractionsave(err_act)
  name = 'psb_cdtransfer'

  ictxt=psb_cd_get_context(desc_in)

  call psb_info(ictxt, me, np)
  if (debug) write(0,*) me,'Entered CDTRANSFER'
  if (np == -1) then
    info = 2010
    call psb_errpush(info,name)
    goto 9999
  endif

  call psb_transfer( desc_in%matrix_data ,    desc_out%matrix_data  , info)
  if (info == 0)  call psb_transfer( desc_in%halo_index  ,    desc_out%halo_index   , info)
  if (info == 0)  call psb_transfer( desc_in%bnd_elem    ,    desc_out%bnd_elem     , info)
  if (info == 0)  call psb_transfer( desc_in%ovrlap_elem ,    desc_out%ovrlap_elem  , info)
  if (info == 0)  call psb_transfer( desc_in%ovrlap_index,    desc_out%ovrlap_index , info)
  if (info == 0)  call psb_transfer( desc_in%loc_to_glob ,    desc_out%loc_to_glob  , info)
  if (info == 0)  call psb_transfer( desc_in%glob_to_loc ,    desc_out%glob_to_loc  , info)
  if (info == 0)  call psb_transfer( desc_in%lprm        ,    desc_out%lprm         , info)
  if (info == 0)  call psb_transfer( desc_in%idx_space   ,    desc_out%idx_space    , info)
  if (info == 0)  call psb_transfer( desc_in%hashv       ,    desc_out%hashv        , info)
  if (info == 0)  call psb_transfer( desc_in%glb_lc      ,    desc_out%glb_lc       , info)
  ! Why doesn't transfer work below? Dunno..... 
  if (info == 0)  call psb_transfer( desc_in%ptree       ,    desc_out%ptree        , info)
  if (.false.) then
    if (info == 0) then 
      if (allocated(desc_in%ptree)) then 
        allocate(desc_out%ptree(2),stat=info)
        if (info /= 0) then 
          info=4000
          goto 9999
        endif
        desc_out%ptree(1:2) = desc_in%ptree(1:2)
        deallocate(desc_in%ptree,stat=info)
      end if
    end if
  endif
  if (info /= 0) then
    info = 4010
    call psb_errpush(info,name)
    goto 9999
  endif

  call psb_erractionrestore(err_act)
  return

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == act_ret) then
    return
  else
    call psb_error(ictxt)
  end if
  return

end subroutine psb_cdtransfer