/* Copyright 2014 Samsung Electronics Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
  This file contains functions to create and manipulate hash-tables.
  Before using the hash initialize it by calling hash_table_init function.
  The function takes pointer to hash function as the last parameter.
  URGENT: the result of the hash function must not be greater than size of the hash table.
  To insert a key-value pair, use hash_table_insert function.
  To lookup a value by the key, use hash_table_lookup function.
  After using the hash, delete it by calling hash_table_free function.
*/
#ifndef HASH_TABLE_H
#define HASH_TABLE_H

#include "mem-heap.h"

typedef void* hash_table;
#define null_hash NULL

hash_table hash_table_init (uint8_t, uint8_t, uint16_t, uint16_t (*hash) (void *));
void hash_table_free (hash_table);
void hash_table_insert (hash_table, void *, void *);
void *hash_table_lookup (hash_table, void *);

#endif /* HASH_TABLE_H */
