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MPI_Win_free(3) man page (version 1.3.4)

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NAME

       MPI_Win_free - Frees the window object and returns a null handle.

SYNTAX


C Syntax

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

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_WIN_FREE(WIN, IERROR)
            INTEGER WIN, IERROR

C++ Syntax

       #include <mpi.h>
       void MPI::Win::Free()

INPUT/OUTPUT PARAMETER

       win       Window object (handle).

OUTPUT PARAMETER

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_Win_free  frees  the  window  object  win and returns a null handle
       (equal to MPI_WIN_NULL). This collective call is executed by  all  pro-
       cesses in the group associated with win. It can be invoked by a process
       only after it has completed its involvement in  RMA  communications  on
       window  win,  that  is, the process has called MPI_Win_fence, or called
       MPI_Win_unlock to match a previous call to MPI_Win_lock. When the  call
       returns, the window memory can be freed.

ERRORS

       Almost  all MPI routines return an error value; C routines as the value
       of the function and Fortran routines in the last  argument.  C++  func-
       tions  do  not  return  errors.  If the default error handler is set to
       MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
       will be used to throw an MPI:Exception object.

       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_create MPI_Win_fence MPI_Win_unlock

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