/* -*- 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>

#include "mpitest.h"

int main(int argc, char **argv)

{

    int rank, size, rc, errclass, errs = 0;

    int flag = 1;

    MPI_Init(&argc, &argv);

    MPI_Comm_rank(MPI_COMM_WORLD, &rank;;

    MPI_Comm_size(MPI_COMM_WORLD, &size);

    MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);

    if (size < 4) {

        fprintf(stderr, "Must run with at least 4 processes\n");

        MPI_Abort(MPI_COMM_WORLD, 1);

    }

    if (2 == rank)

        exit(EXIT_FAILURE);

    if (0 == rank)

        flag = 0;

    rc = MPIX_Comm_agree(MPI_COMM_WORLD, &flag;;

    MPI_Error_class(rc, &errclass);

    if (errclass != MPIX_ERR_PROC_FAILED) {

        fprintf(stderr, "[%d] Expected MPIX_ERR_PROC_FAILED after agree. Received: %d\n", rank,

                errclass);

        MPI_Abort(MPI_COMM_WORLD, 1);

        errs++;

    }

    else if (0 != flag) {

        fprintf(stderr, "[%d] Expected flag to be 0. Received: %d\n", rank, flag);

        errs++;

    }

    MPIX_Comm_failure_ack(MPI_COMM_WORLD);

    if (0 == rank)

        flag = 0;

    else

        flag = 1;

    rc = MPIX_Comm_agree(MPI_COMM_WORLD, &flag;;

    MPI_Error_class(rc, &errclass);

    if (MPI_SUCCESS != rc) {

        fprintf(stderr, "[%d] Expected MPI_SUCCESS after agree. Received: %d\n", rank, errclass);

        MPI_Abort(MPI_COMM_WORLD, 1);

        errs++;

    }

    else if (0 != flag) {

        fprintf(stderr, "[%d] Expected flag to be 0. Received: %d\n", rank, flag);

        MPI_Abort(MPI_COMM_WORLD, 1);

        errs++;

    }

    MPI_Finalize();

    if (0 == rank) {

        if (errs == 0)

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

        else

            fprintf(stdout, " Found %d errors\n", errs);

    }

    return errs;

}