NAME¶
MPI_Win_free - Frees the window object and returns a null handle.
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()
- 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 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