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155 lines
3.4 KiB
Fortran
155 lines
3.4 KiB
Fortran
! File: psb_dscfree.f90
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!
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! Subroutine: psb_dscfree
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! Frees a descriptor data structure.
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!
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! Parameters:
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! desc_a - type(<psb_desc_type>). The communication descriptor to be freed.
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! info - integer. Eventually returns an error code.
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subroutine psb_dscfree(desc_a,info)
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!...free descriptor structure...
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use psb_descriptor_type
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use psb_const_mod
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use psb_error_mod
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implicit none
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!....parameters...
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type(psb_desc_type), intent(inout) :: desc_a
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integer, intent(out) :: info
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!...locals....
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integer :: int_err(5)
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integer :: temp(1)
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real(kind(1.d0)) :: real_err(5)
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integer :: icontxt,nprow,npcol,me,mypcol, err_act
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character(len=20) :: name, char_err
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if(psb_get_errstatus().ne.0) return
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info=0
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call psb_erractionsave(err_act)
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name = 'psb_dscfree'
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if (.not.associated(desc_a%matrix_data)) then
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info=295
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call psb_errpush(info,name)
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return
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end if
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icontxt=desc_a%matrix_data(psb_ctxt_)
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deallocate(desc_a%matrix_data)
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call blacs_gridinfo(icontxt, nprow, npcol, me, mypcol)
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! ....verify blacs grid correctness..
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if (nprow.eq.-1) then
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info = 2010
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call psb_errpush(info,name)
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goto 9999
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else if (npcol.ne.1) then
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info = 2030
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int_err(1) = npcol
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call psb_errpush(info,name,int_err)
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goto 9999
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endif
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!...deallocate desc_a....
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if(.not.associated(desc_a%loc_to_glob)) then
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info=295
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call psb_errpush(info,name)
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goto 9999
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end if
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!deallocate loc_to_glob field
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deallocate(desc_a%loc_to_glob,stat=info)
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if (info /= 0) then
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info=2051
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call psb_errpush(info,name)
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goto 9999
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end if
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if (.not.associated(desc_a%glob_to_loc)) then
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info=295
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call psb_errpush(info,name)
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goto 9999
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end if
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!deallocate glob_to_loc field
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deallocate(desc_a%glob_to_loc,stat=info)
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if (info /= 0) then
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info=2052
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call psb_errpush(info,name)
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goto 9999
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end if
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if (.not.associated(desc_a%halo_index)) then
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info=295
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call psb_errpush(info,name)
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goto 9999
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end if
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!deallocate halo_index field
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deallocate(desc_a%halo_index,stat=info)
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if (info /= 0) then
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info=2053
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call psb_errpush(info,name)
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goto 9999
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end if
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if (.not.associated(desc_a%bnd_elem)) then
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info=296
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call psb_errpush(info,name)
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goto 9999
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end if
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!deallocate halo_index field
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deallocate(desc_a%bnd_elem,stat=info)
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if (info /= 0) then
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info=2054
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call psb_errpush(info,name)
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goto 9999
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end if
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if (.not.associated(desc_a%ovrlap_index)) then
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info=295
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call psb_errpush(info,name)
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goto 9999
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end if
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!deallocate ovrlap_index field
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deallocate(desc_a%ovrlap_index,stat=info)
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if (info /= 0) then
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info=2055
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call psb_errpush(info,name)
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goto 9999
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end if
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!deallocate ovrlap_elem field
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deallocate(desc_a%ovrlap_elem,stat=info)
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if (info /= 0) then
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info=2056
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call psb_errpush(info,name)
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goto 9999
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end if
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!deallocate ovrlap_index field
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deallocate(desc_a%lprm,stat=info)
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if (info /= 0) then
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info=2057
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call psb_errpush(info,name)
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goto 9999
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end if
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call psb_nullify_desc(desc_a)
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.act_ret) then
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return
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else
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call psb_error(icontxt)
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end if
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return
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end subroutine psb_dscfree
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