C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/ptracers/Attic/ptracers_fields_blocking_exchanges.F,v 1.1 2002/03/04 19:01:29 adcroft Exp $
C $Name:  $

#include "PTRACERS_OPTIONS.h"

CBOP
C !ROUTINE: PTRACERS_FIELDS_BLOCKING_EXCHANGES

C !INTERFACE: ==========================================================
      SUBROUTINE PTRACERS_FIELDS_BLOCKING_EXCHANGES( myThid )

C !DESCRIPTION:
C     Exchange data to update overlaps for passive tracers

C !USES: ===============================================================
      IMPLICIT NONE
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PTRACERS.h"

C !INPUT PARAMETERS: ===================================================
C  myThid               :: thread number
      INTEGER myThid

C !OUTPUT PARAMETERS: ==================================================
C  none

#ifdef ALLOW_PTRACERS

C !LOCAL VARIABLES: ====================================================
C  iTracer 		:: loop indices
      INTEGER iTracer
CEOP

      IF (PTRACERSisON) THEN

C Loop over passive tracers
      DO iTracer=1,PTRACERS_numInUse

C Exchange overlaps
      _EXCH_XYZ_R8(pTracer(1-Olx,1-Oly,1,1,1,iTracer),myThid)

C End of tracer loop
      ENDDO

      ENDIF
#endif /* ALLOW_PTRACERS */

      RETURN
      END