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100 lines
3.4 KiB
Fortran
100 lines
3.4 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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! File: psb_get_overlap.f90
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!
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! Subroutine: psb_get_overlap
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! Extracts a list of overlap indices. If no overlap is present in
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! the distribution the output vector is put in the unallocated state,
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! otherwise its size is equal to the number of overlap indices on the
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! current (calling) process.
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!
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! Arguments:
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! ovrel(:) - integer(psb_ipk_), allocatable Array containing the output list
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. return code.
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!
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subroutine psb_get_ovrlap(ovrel,desc,info)
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use psb_base_mod, psb_protect_name => psb_get_ovrlap
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implicit none
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integer(psb_ipk_), allocatable, intent(out) :: ovrel(:)
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type(psb_desc_type), intent(in) :: desc
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: i,j, err_act
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character(len=20) :: name
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info = psb_success_
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name='psi_get_overlap'
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call psb_erractionsave(err_act)
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if (.not.psb_is_asb_desc(desc)) then
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info = psb_err_invalid_cd_state_
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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 (allocated(desc%ovrlap_elem) ) then
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i=size(desc%ovrlap_elem,1)
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allocate(ovrel(i),stat=info)
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if (info /= psb_success_ ) then
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info = psb_err_alloc_dealloc_
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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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do j=1,i
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ovrel(j) = desc%ovrlap_elem(j,1)
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end do
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else
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if (allocated(ovrel)) then
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deallocate(ovrel,stat=info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='Deallocate')
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goto 9999
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end if
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end if
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end if
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine psb_get_ovrlap
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