NAME

       MPI_Win_unlock_all - Completes an RMA access epoch started by a call to MPI_Win_lock_all.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Win_unlock_all(MPI_Win win)

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_WIN_UNLOCK_ALL(IN, IERROR)
            INTEGER IN, IERROR

INPUT PARAMETERS

       win       Window object (handle).

OUTPUT PARAMETER

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_Win_unlock_all  completes  an  RMA access epoch started by a call to MPI_Win_lock_all. RMA operations
       issued during this period will have completed both at the origin and at the target when the call returns.

       Locks are used to protect accesses to the locked target window effected by RMA calls issued  between  the
       lock  and unlock call, and to protect local load/store accesses to a locked local window executed between
       the lock and unlock call. Accesses that are protected by an exclusive lock will not be concurrent at  the
       window  site  with other accesses to the same window that are lock protected. Accesses that are protected
       by a shared lock will not be concurrent at the window site with accesses protected by an  exclusive  lock
       to the same window.

ERRORS

       Almost  all  MPI  routines  return  an  error  value; C routines as the value of the function and Fortran
       routines in the last argument.

       Before the error value is returned, the current MPI error handler  is  called.  By  default,  this  error
       handler  aborts  the  MPI  job,  except  for  I/O  function errors. The error handler may be changed with
       MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values
       to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

SEE ALSO

       MPI_Win_lock_all MPI_Win_unlock