/*

 * 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

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 */

#include <memkind.h>

#include <limits.h>

#include <stdio.h>

#include <stdlib.h>

#define PMEM_MAX_SIZE (1024 * 1024 * 32)

#define NUM_KINDS 10

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

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[])

{

    struct memkind *pmem_kinds[NUM_KINDS] = {NULL};

    struct memkind *pmem_kind = NULL;

    struct memkind *pmem_kind_unlimited = NULL;

    int err = 0, i = 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 create and destroy pmem kind with defined or unlimited size."

            "\nPMEM kind directory: %s\n", path);

    // Create first PMEM partition with specific size

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

    if (err) {

        print_err_message(err);

        return 1;

    }

    // Create second PMEM partition with unlimited size

    err = memkind_create_pmem(path, 0, &pmem_kind_unlimited);

    if (err) {

        print_err_message(err);

        return 1;

    }

    // Destroy both PMEM partitions

    err = memkind_destroy_kind(pmem_kind);

    if (err) {

        print_err_message(err);

        return 1;

    }

    err = memkind_destroy_kind(pmem_kind_unlimited);

    if (err) {

        print_err_message(err);

        return 1;

    }

    // Create many PMEM kinds with same specific size

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

        err = memkind_create_pmem(path, PMEM_MAX_SIZE, &pmem_kinds[i]);

        if (err) {

            print_err_message(err);

            return 1;

        }

    }

    // Destroy all of them

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

        err = memkind_destroy_kind(pmem_kinds[i]);

        if (err) {

            print_err_message(err);

            return 1;

        }

    }

    fprintf(stdout, "PMEM kinds have been successfully created and destroyed.\n");

    return 0;

}