/*

 * Copyright (c) 2018 - 2019 Intel Corporation

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *

 *     * Redistributions in binary form must reproduce the above copyright

 *       notice, this list of conditions and the following disclaimer in

 *       the documentation and/or other materials provided with the

 *       distribution.

 *

 *     * Neither the name of Intel Corporation nor the names of its

 *       contributors may be used to endorse or promote products derived

 *       from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY LOG OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include <memkind.h>

#include <limits.h>

#include <stdio.h>

#include <stdlib.h>

static char path[PATH_MAX]="/tmp/";

static const size_t PMEM_PART_SIZE = MEMKIND_PMEM_MIN_SIZE + 4 * 1024;

static void print_err_message(int err)

{

    char error_message[MEMKIND_ERROR_MESSAGE_SIZE];

    memkind_error_message(err, error_message, MEMKIND_ERROR_MESSAGE_SIZE);

    fprintf(stderr, "%s\n", error_message);

}

int main(int argc, char **argv)

{

    const size_t size = 512;

    struct memkind *pmem_kind = NULL;

    const int arraySize = 100;

    char *ptr[100] = { NULL };

    int i = 0;

    int err = 0;

    if (argc > 2) {

        fprintf(stderr, "Usage: %s [pmem_kind_dir_path]\n", argv[0]);

        return 1;

    } else if (argc == 2 && (realpath(argv[1], path) == NULL)) {

        fprintf(stderr, "Incorrect pmem_kind_dir_path %s\n", argv[1]);

        return 1;

    }

    fprintf(stdout,

            "This example shows how to use memkind_free with unknown kind as a parameter.\n");

    err = memkind_create_pmem(path, PMEM_PART_SIZE, &pmem_kind);

    if (err) {

        print_err_message(err);

        return 1;

    }

    for (i = 0; i < arraySize; ++i) {

        if (i < 50) {

            ptr[i] = memkind_malloc(MEMKIND_DEFAULT, size);

            if (ptr[i] == NULL) {

                fprintf(stderr, "Unable to allocate memkind default.\n");

                return 1;

            }

        } else {

            ptr[i] = memkind_malloc(pmem_kind, size);

            if (ptr[i] == NULL) {

                fprintf(stderr, "Unable to allocate pmem.\n");

                return 1;

            }

        }

    }

    fprintf(stdout,

            "Memory was successfully allocated in default kind and pmem kind.\n");

    sprintf(ptr[10], "Hello world from standard memory - ptr[10].\n");

    sprintf(ptr[40], "Hello world from standard memory - ptr[40].\n");

    sprintf(ptr[80], "Hello world from persistent memory - ptr[80].\n");

    fprintf(stdout, "%s", ptr[10]);

    fprintf(stdout, "%s", ptr[40]);

    fprintf(stdout, "%s", ptr[80]);

    fprintf(stdout, "Free memory without specifying kind.\n");

    for (i = 0; i < arraySize; ++i) {

        memkind_free(NULL, ptr[i]);

    }

    err = memkind_destroy_kind(pmem_kind);

    if (err) {

        print_err_message(err);

        return 1;

    }

    fprintf(stdout, "Memory was successfully released.\n");

    return 0;

}