RFLO_ClearSendRequests.F90

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! *********************************************************************
! * Rocstar Simulation Suite                                          *
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!******************************************************************************
!
! Purpose: wait until data is received by other processors communicating
!          with the current region.
!
! Description: none.
!
! Input: regions  = all regiona
!        iReg     = current region
!        geometry = true if geometrical data were send, false otherwise.
!
! Output: none.
!
! Notes: none.
!
!******************************************************************************
!
! $Id: RFLO_ClearSendRequests.F90,v 1.4 2008/12/06 08:44:26 mtcampbe Exp $
!
! Copyright: (c) 2001 by the University of Illinois
!
!******************************************************************************

SUBROUTINE rflo_clearsendrequests( regions,iReg,geometry )

  USE moddatatypes
  USE modbndpatch, ONLY   : t_patch
  USE moddatastruct, ONLY : t_region
  USE modglobal, ONLY     : t_global
  USE moderror
  USE modmpi
  USE modparameters
  IMPLICIT NONE

! ... parameters
  TYPE(t_region), POINTER :: regions(:)

  INTEGER :: ireg

  LOGICAL :: geometry

! ... loop variables
  INTEGER :: ipatch, ir

! ... local variables
  INTEGER :: ilev, npatches, bctype, iregsrc, irequest
#ifdef MPI
  INTEGER :: status(mpi_status_size)
#endif

  LOGICAL dowait

  TYPE(t_patch), POINTER  :: patch
  TYPE(t_global), POINTER :: global

!******************************************************************************

  global => regions(1)%global

  CALL registerfunction( global,'RFLO_ClearSendRequests',&
  'RFLO_ClearSendRequests.F90' )

#ifdef MPI
! get dimensions --------------------------------------------------------------

  IF (geometry) THEN
    ilev = 1
  ELSE
    ilev = regions(ireg)%currLevel
  ENDIF
  npatches = regions(ireg)%nPatches

! wait for patch data being received by other processors ----------------------

  DO ipatch=1,npatches

    patch => regions(ireg)%levels(ilev)%patches(ipatch)

    bctype  = patch%bcType
    iregsrc = patch%srcRegion

! - region interface, periodic boundary

    IF (geometry) THEN
      dowait = ((bctype>=bc_regionconf .AND. bctype<=bc_regionconf+bc_range) &
                .OR. &
                (bctype>=bc_tra_peri   .AND. bctype<=bc_tra_peri  +bc_range) &
                .OR. &
                (bctype>=bc_rot_peri   .AND. bctype<=bc_rot_peri  +bc_range))
    ELSE
      dowait = ((bctype>=bc_regionconf .AND. bctype<=bc_regionconf+bc_range) &
                .OR. &
                (bctype>=bc_regionint  .AND. bctype<=bc_regionint +bc_range) &
                .OR. &
                (bctype>=bc_regnonconf .AND. bctype<=bc_regnonconf+bc_range) &
                .OR. &
                (bctype>=bc_tra_peri   .AND. bctype<=bc_tra_peri  +bc_range) &
                .OR. &
                (bctype>=bc_rot_peri   .AND. bctype<=bc_rot_peri  +bc_range))
    ENDIF

    IF (iregsrc > 0) THEN
      IF (dowait .AND. (regions(iregsrc)%procid /= global%myProcid)) THEN
        CALL mpi_wait( global%requests(patch%mixt%iRequest),status, &
                       global%mpierr )
        IF (global%mpierr /= 0) CALL errorstop( global,err_mpi_trouble,__line__ )
      ENDIF
    ENDIF

  ENDDO   ! iPatch

! wait for edges & corners being received by other processors -----------------

  IF (.NOT. geometry .AND. global%nProcAlloc>1) THEN
    DO ir=1,global%nRegions
      IF (regions(ireg)%levels(ilev)%sendEcCells(ir)%nCells > 0) THEN
        irequest = regions(ireg)%levels(ilev)%sendEcCells(ir)%iRequest
        CALL mpi_wait( global%requests(irequest),status,global%mpierr )
        IF (global%mpierr /= 0) CALL errorstop( global,err_mpi_trouble,__line__ )
      ENDIF
    ENDDO
  ENDIF
#endif

! finalize --------------------------------------------------------------------

  CALL deregisterfunction( global )

END SUBROUTINE rflo_clearsendrequests

!******************************************************************************
!
! RCS Revision history:
!
! $Log: RFLO_ClearSendRequests.F90,v $
! Revision 1.4  2008/12/06 08:44:26  mtcampbe
! Updated license.
!
! Revision 1.3  2008/11/19 22:17:37  mtcampbe
! Added Illinois Open Source License/Copyright
!
! Revision 1.2  2006/08/19 15:39:32  mparmar
! Renamed patch variables
!
! Revision 1.1  2004/11/29 20:51:38  wasistho
! lower to upper case
!
! Revision 1.8  2003/05/15 02:57:03  jblazek
! Inlined index function.
!
! Revision 1.7  2003/02/24 16:57:43  jferry
! Moved #endif for #ifdef MPI to encompass final section of code
!
! Revision 1.6  2003/02/14 22:32:37  jblazek
! Finished implementation of corener and edge cells.
!
! Revision 1.5  2002/09/30 19:58:17  jblazek
! Added check of iRegSrc before IF (dowait ...) THEN statement.
!
! Revision 1.4  2002/09/27 00:57:10  jblazek
! Changed makefiles - no makelinks needed.
!
! Revision 1.3  2002/09/05 17:40:21  jblazek
! Variable global moved into regions().
!
! Revision 1.2  2002/07/12 21:50:07  jblazek
! Added tool to split single grid into multiple regions.
!
! Revision 1.1  2002/04/01 19:36:08  jblazek
! Added routine to clear send requests.
!
!******************************************************************************