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

/*

 *

 *  (C) 2010 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include "mpi.h"

#include <stdio.h>

#include <stdlib.h>

#include "mpitest.h"

#define TARGET 0

/* Test the given operation within a Fence epoch */

#define TEST_FENCE_OP(op_name_, fcn_call_)                              \

    do {                                                                \

        err = fcn_call_                                                 \

        if (err) {                                                      \

            errs++;                                                     \

            if (errs < 10) {                                            \

                MTestPrintErrorMsg("Zero-byte op " op_name_, err);    \

            }                                                           \

        }                                                               \

        err = MPI_Win_fence(0, win);                                  \

        if (err) {                                                      \

            errs++;                                                     \

            if (errs < 10) {                                            \

                MTestPrintErrorMsg("Fence after " op_name_, err);     \

            }                                                           \

        }                                                               \

    } while (0)

/* Test the given operation within a passive target epoch */

#define TEST_PT_OP(op_name_, fcn_call_)                                 \

    do {                                                                \

        err = MPI_Win_lock(MPI_LOCK_EXCLUSIVE, TARGET, 0, win);         \

        if (err) {                                                      \

            errs++;                                                     \

            if (errs < 10) {                                            \

                MTestPrintErrorMsg("Lock before" op_name_, err);      \

            }                                                           \

        }                                                               \

        err = fcn_call_                                                 \

        if (err) {                                                      \

            errs++;                                                     \

            if (errs < 10) {                                            \

                MTestPrintErrorMsg("Zero-byte op " op_name_, err);    \

            }                                                           \

        }                                                               \

        err = MPI_Win_unlock(TARGET, win);                            \

        if (err) {                                                      \

            errs++;                                                     \

            if (errs < 10) {                                            \

                MTestPrintErrorMsg("Unlock after " op_name_, err);    \

            }                                                           \

        }                                                               \

    } while (0)

/* Test the given request-based operation within a passive target epoch */

#define TEST_REQ_OP(op_name_, req_, fcn_call_)                          \

    do {                                                                \

        err = MPI_Win_lock(MPI_LOCK_EXCLUSIVE, TARGET, 0, win);         \

        if (err) {                                                      \

            errs++;                                                     \

            if (errs < 10) {                                            \

                MTestPrintErrorMsg("Lock before" op_name_, err);      \

            }                                                           \

        }                                                               \

        err = fcn_call_                                                 \

        if (err) {                                                      \

            errs++;                                                     \

            if (errs < 10) {                                            \

                MTestPrintErrorMsg("Zero-byte op " op_name_, err);    \

            }                                                           \

        }                                                               \

        err = MPI_Win_unlock(TARGET, win);                            \

        if (err) {                                                      \

            errs++;                                                     \

            if (errs < 10) {                                            \

                MTestPrintErrorMsg("Unlock after " op_name_, err);    \

            }                                                           \

        }                                                               \

        err = MPI_Wait(&req_, MPI_STATUS_IGNORE);                     \

        if (err) {                                                      \

            errs++;                                                     \

            if (errs < 10) {                                            \

                MTestPrintErrorMsg("Wait after " op_name_, err);      \

            }                                                           \

        }                                                               \

    } while (0)

/*

static char MTEST_Descrip[] = "Test handling of zero-byte transfers";

*/

int main(int argc, char *argv[])

{

    int errs = 0, err;

    int rank, size;

    int *buf, bufsize;

    int *result;

    int *rmabuf, rsize, rcount;

    MPI_Comm comm;

    MPI_Win win;

    MPI_Request req;

    MPI_Datatype derived_dtp;

    MTest_Init(&argc, &argv);

    bufsize = 256 * sizeof(int);

    buf = (int *) malloc(bufsize);

    if (!buf) {

        fprintf(stderr, "Unable to allocated %d bytes\n", bufsize);

        MPI_Abort(MPI_COMM_WORLD, 1);

    }

    result = (int *) malloc(bufsize);

    if (!result) {

        fprintf(stderr, "Unable to allocated %d bytes\n", bufsize);

        MPI_Abort(MPI_COMM_WORLD, 1);

    }

    rcount = 16;

    rsize = rcount * sizeof(int);

    rmabuf = (int *) malloc(rsize);

    if (!rmabuf) {

        fprintf(stderr, "Unable to allocated %d bytes\n", rsize);

        MPI_Abort(MPI_COMM_WORLD, 1);

    }

    MPI_Type_contiguous(2, MPI_INT, &derived_dtp);

    MPI_Type_commit(&derived_dtp);

    /* The following loop is used to run through a series of communicators

     * that are subsets of MPI_COMM_WORLD, of size 1 or greater. */

    while (MTestGetIntracommGeneral(&comm, 1, 1)) {

        int count = 0;

        if (comm == MPI_COMM_NULL)

            continue;

        /* Determine the sender and receiver */

        MPI_Comm_rank(comm, &rank;;

        MPI_Comm_size(comm, &size);

        MPI_Win_create(buf, bufsize, 2 * sizeof(int), MPI_INFO_NULL, comm, &win);

        /* To improve reporting of problems about operations, we

         * change the error handler to errors return */

        MPI_Win_set_errhandler(win, MPI_ERRORS_RETURN);

        /** TEST OPERATIONS USING ACTIVE TARGET (FENCE) SYNCHRONIZATION **/

        MPI_Win_fence(0, win);

        TEST_FENCE_OP("Put", MPI_Put(rmabuf, count, MPI_INT, TARGET, 0, count, MPI_INT, win);

);

        TEST_FENCE_OP("Get", MPI_Get(rmabuf, count, MPI_INT, TARGET, 0, count, MPI_INT, win);

);

        TEST_FENCE_OP("Accumulate",

                      MPI_Accumulate(rmabuf, count, MPI_INT, TARGET,

                                     0, count, MPI_INT, MPI_SUM, win);

);

        TEST_FENCE_OP("Accumulate_derived",

                      MPI_Accumulate(rmabuf, count, derived_dtp, TARGET,

                                     0, count, derived_dtp, MPI_SUM, win);

);

        TEST_FENCE_OP("Get accumulate",

                      MPI_Get_accumulate(rmabuf, count, MPI_INT, result,

                                         count, MPI_INT, TARGET, 0, count, MPI_INT, MPI_SUM, win);

);

        /* Note: It's not possible to generate a zero-byte FOP or CAS */

        /** TEST OPERATIONS USING PASSIVE TARGET SYNCHRONIZATION **/

        TEST_PT_OP("Put", MPI_Put(rmabuf, count, MPI_INT, TARGET, 0, count, MPI_INT, win);

);

        TEST_PT_OP("Get", MPI_Get(rmabuf, count, MPI_INT, TARGET, 0, count, MPI_INT, win);

);

        TEST_PT_OP("Accumulate",

                   MPI_Accumulate(rmabuf, count, MPI_INT, TARGET, 0, count, MPI_INT, MPI_SUM, win);

);

        TEST_PT_OP("Accumulate_derived",

                   MPI_Accumulate(rmabuf, count, derived_dtp, TARGET, 0,

                                  count, derived_dtp, MPI_SUM, win);

);

        TEST_PT_OP("Get accumulate",

                   MPI_Get_accumulate(rmabuf, count, MPI_INT, result, count,

                                      MPI_INT, TARGET, 0, count, MPI_INT, MPI_SUM, win);

);

        /* Note: It's not possible to generate a zero-byte FOP or CAS */

        /** TEST REQUEST-BASED OPERATIONS (PASSIVE TARGET ONLY) **/

        TEST_REQ_OP("Rput", req,

                    MPI_Rput(rmabuf, count, MPI_INT, TARGET, 0, count, MPI_INT, win, &req;;

);

        TEST_REQ_OP("Rget", req,

                    MPI_Rget(rmabuf, count, MPI_INT, TARGET, 0, count, MPI_INT, win, &req;;

);

        TEST_REQ_OP("Raccumulate", req,

                    MPI_Raccumulate(rmabuf, count, MPI_INT, TARGET, 0,

                                    count, MPI_INT, MPI_SUM, win, &req;;

);

        TEST_REQ_OP("Raccumulate_derived", req,

                    MPI_Raccumulate(rmabuf, count, derived_dtp, TARGET, 0,

                                    count, derived_dtp, MPI_SUM, win, &req;;

);

        TEST_REQ_OP("Rget_accumulate", req,

                    MPI_Rget_accumulate(rmabuf, count, MPI_INT, result,

                                        count, MPI_INT, TARGET, 0,

                                        count, MPI_INT, MPI_SUM, win, &req;;

);

        MPI_Win_free(&win);

        MTestFreeComm(&comm);

    }

    MPI_Type_free(&derived_dtp);

    free(result);

    free(buf);

    free(rmabuf);

    MTest_Finalize(errs);

    MPI_Finalize();

    return 0;

}