!  
!   
!                             AMG4PSBLAS version 1.0
!    Algebraic Multigrid Package
!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
!    
!    (C) Copyright 2021 
!  
!        Salvatore Filippone  
!        Pasqua D'Ambra   
!        Fabio Durastante        
!   
!    Redistribution and use in source and binary forms, with or without
!    modification, are permitted provided that the following conditions
!    are met:
!      1. Redistributions of source code must retain the above copyright
!         notice, this list of conditions and the following disclaimer.
!      2. Redistributions in binary form must reproduce the above copyright
!         notice, this list of conditions, and the following disclaimer in the
!         documentation and/or other materials provided with the distribution.
!      3. The name of the AMG4PSBLAS group or the names of its contributors may
!         not be used to endorse or promote products derived from this
!         software without specific written permission.
!   
!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!    POSSIBILITY OF SUCH DAMAGE.
!   
!  
subroutine amg_z_base_onelev_free(lv,info)
  
  use psb_base_mod
  use amg_z_onelev_mod, amg_protect_name =>  amg_z_base_onelev_free
  implicit none 

  class(amg_z_onelev_type), intent(inout) :: lv
  integer(psb_ipk_), intent(out)          :: info
  integer(psb_ipk_) :: i

  info = psb_success_

  ! We might just deallocate the top level array, except 
  ! that there may be inner objects containing C pointers,
  ! e.g.  UMFPACK, SLU or CUDA stuff.
  ! We really need FINALs. 
  if (allocated(lv%sm)) &
       & call lv%sm%free(info)

  if (allocated(lv%sm2a)) &
       & call lv%sm2a%free(info)

  if (allocated(lv%wrk)) &
       & call lv%wrk%free(info)

  call lv%ac%free()
  if (lv%desc_ac%is_ok()) &
       & call lv%desc_ac%free(info)
  call lv%linmap%free(info)

  ! This is a pointer to something else, must not free it here. 
  nullify(lv%base_a) 
  ! This is a pointer to something else, must not free it here. 
  nullify(lv%base_desc) 

  call lv%nullify()

end subroutine amg_z_base_onelev_free
