17.2.432. MPI_Win_create_errhandler

MPI_Win_create_errhandler - Creates an error handler for a window.

17.2.432.1. SYNTAX

17.2.432.1.1. C Syntax

#include <mpi.h>

int MPI_Win_create_errhandler(MPI_Win_errhandler_function *function,
     MPI_Errhandler *errhandler)

17.2.432.1.2. Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_WIN_CREATE_ERRHANDLER(FUNCTION, ERRHANDLER, IERROR)
     EXTERNAL FUNCTION
     INTEGER ERRHANDLER, IERROR

17.2.432.1.3. Fortran 2008 Syntax

USE mpi_f08
MPI_Win_create_errhandler(win_errhandler_fn, errhandler, ierror)
     PROCEDURE(MPI_Win_errhandler_function) :: win_errhandler_fn
     TYPE(MPI_Errhandler), INTENT(OUT) :: errhandler
     INTEGER, OPTIONAL, INTENT(OUT) :: ierror

17.2.432.2. DEPRECATED TYPE NAME NOTE

MPI-2.2 deprecated the MPI_Win_errhandler_fn and MPI::Win::Errhandler_fn types in favor of MPI_Win_errhandler_function and MPI::Win::Errhandler_function, respectively. Open MPI supports both names (indeed, the _fn names are typedefs to the _function names).

17.2.432.3. INPUT PARAMETER

  • function: User-defined error-handling procedure (function).

17.2.432.4. OUTPUT PARAMETERS

  • errhandler: MPI error handler (handle).

  • IERROR: Fortran only: Error status (integer).

17.2.432.5. DESCRIPTION

MPI_Win_create_errhandler should be, in C, a function of type MPI_Win_errhandler_function, which is defined as

typedef void MPI_Win_errhandler_function(MPI Win *, int *, ...);

The first argument is the window in use, the second is the error code to be returned.

In Fortran, the user routine should be of the form:

SUBROUTINE WIN_ERRHANDLER_FUNCTION(WIN, ERROR_CODE, ...)
    INTEGER WIN, ERROR_CODE

17.2.432.6. 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_Win_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.