// SPDX-License-Identifier: BSD-3-Clause

/* Copyright (C) 2019 - 2020 Intel Corporation. */

#include <memkind.h>

#include <limits.h>

#include <stdio.h>

#include <stdlib.h>

#define PMEM_MAX_SIZE (1024 * 1024 * 32)

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_kind = NULL;

    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 custom configuration to create pmem kind."

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

    struct memkind_config *test_cfg = memkind_config_new();

    if (!test_cfg) {

        fprintf(stderr, "Unable to create memkind cfg.\n");

        return 1;

    }

    memkind_config_set_path(test_cfg, path);

    memkind_config_set_size(test_cfg, PMEM_MAX_SIZE);

    memkind_config_set_memory_usage_policy(test_cfg,

                                           MEMKIND_MEM_USAGE_POLICY_CONSERVATIVE);

    // Create PMEM partition with specific configuration

    err =  memkind_create_pmem_with_config(test_cfg, &pmem_kind);

    if (err) {

        print_err_message(err);

        return 1;

    }

    err = memkind_destroy_kind(pmem_kind);

    if (err) {

        print_err_message(err);

        return 1;

    }

    memkind_config_delete(test_cfg);

    fprintf(stdout,

            "PMEM kind and configuration was successfully created and destroyed.\n");

    return 0;

}