/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */

/*

 *

 *  (C) 2014 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include <mpi.h>

#include <stdio.h>

#include <stdlib.h>

/*

 * This test ensures that MPI_Comm_revoke works when a process failure has not

 * occurred yet.

 */

int main(int argc, char **argv)

{

    int rank, size;

    int rc, ec;

    char error[MPI_MAX_ERROR_STRING];

    MPI_Comm world_dup;

    MPI_Init(&argc, &argv);

    MPI_Comm_rank(MPI_COMM_WORLD, &rank;;

    MPI_Comm_size(MPI_COMM_WORLD, &size);

    if (size < 2) {

        fprintf(stderr, "Must run with at least 2 processes\n");

        MPI_Abort(MPI_COMM_WORLD, 1);

    }

    MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);

    MPI_Comm_dup(MPI_COMM_WORLD, &world_dup);

    if (rank == 1) {

        MPIX_Comm_revoke(world_dup);

    }

    rc = MPI_Barrier(world_dup);

    MPI_Error_class(rc, &ec);

    if (ec != MPIX_ERR_REVOKED) {

        MPI_Error_string(ec, error, &size);

        fprintf(stderr,

                "[%d] MPI_Barrier should have returned MPIX_ERR_REVOKED (%d), but it actually returned: %d\n%s\n",

                rank, MPIX_ERR_REVOKED, ec, error);

        MPI_Abort(MPI_COMM_WORLD, 1);

    }

    MPI_Comm_free(&world_dup);

    if (rank == 0)

        fprintf(stdout, " No errors\n");

    MPI_Finalize();

    return 0;

}