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 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