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MPI_Win_free(3OpenMPI)                                                                MPI_Win_free(3OpenMPI)



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 col-lective collective
       lective call is executed by all processes 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++ functions 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




Open MPI 1.2                                     March 2006                           MPI_Win_free(3OpenMPI)