source: mainline/uspace/app/hbench/params.c@ 77b01fe

/*
 * Copyright (c) 2019 Vojtech Horky
 * All rights reserved.
 *
 * 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup hbench
 * @{
 */
/**
 * @file
 */

#include <adt/hash_table.h>
#include <stdlib.h>
#include <stdio.h>
#include <str.h>
#include "hbench.h"

typedef struct {
        ht_link_t link;

        char *key;
        char *value;
} param_t;

static size_t param_hash(const ht_link_t *item)
{
        param_t *param = hash_table_get_inst(item, param_t, link);
        return str_size(param->key);
}

static size_t param_key_hash(void *key)
{
        char *key_str = key;
        return str_size(key_str);
}

static bool param_key_equal(void *key, const ht_link_t *item)
{
        param_t *param = hash_table_get_inst(item, param_t, link);
        char *key_str = key;

        return str_cmp(param->key, key_str) == 0;
}

static bool param_equal(const ht_link_t *link_a, const ht_link_t *link_b)
{
        param_t *a = hash_table_get_inst(link_a, param_t, link);
        param_t *b = hash_table_get_inst(link_b, param_t, link);

        return str_cmp(a->key, b->key) == 0;
}

static void param_remove(ht_link_t *item)
{
        param_t *param = hash_table_get_inst(item, param_t, link);
        free(param->key);
        free(param->value);
}

static hash_table_ops_t param_hash_table_ops = {
        .hash = param_hash,
        .key_hash = param_key_hash,
        .key_equal = param_key_equal,
        .equal = param_equal,
        .remove_callback = param_remove
};

/** Table of extra parameters (of param_t). */
static hash_table_t param_hash_table;

extern errno_t bench_param_init(void)
{
        bool ok = hash_table_create(&param_hash_table, 0, 0, &param_hash_table_ops);
        if (!ok) {
                return ENOMEM;
        }

        return EOK;
}

extern void bench_param_cleanup(void)
{
        hash_table_destroy(&param_hash_table);
}

errno_t bench_param_set(const char *key, const char *value)
{
        param_t *param = malloc(sizeof(param_t));
        if (param == NULL) {
                return ENOMEM;
        }

        param->key = str_dup(key);
        param->value = str_dup(value);

        if ((param->key == NULL) || (param->value == NULL)) {
                free(param->key);
                free(param->value);
                free(param);

                return ENOMEM;
        }

        hash_table_insert(&param_hash_table, &param->link);

        return EOK;
}

const char *bench_param_get(const char *key, const char *default_value)
{
        ht_link_t *item = hash_table_find(&param_hash_table, (char *) key);

        if (item == NULL) {
                return default_value;
        }

        param_t *param = hash_table_get_inst(item, param_t, link);
        return param->value;
}

/** @}
 */