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/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* hash_dict
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* - hash-map based dict feature
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*
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* Copyright (C) 2004-2026 Leaflet <leaflet@leafok.com>
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*/
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#ifndef _HASH_DICT_H_
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#define _HASH_DICT_H_
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#include "memory_pool.h"
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#include <stdint.h>
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enum hash_dict_constant_t
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{
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HASH_DICT_BUCKET_SIZE = 65536,
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HASH_DICT_BUCKET_MAX_COUNT = 1024,
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};
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struct hash_item_t
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{
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uint64_t key;
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int64_t value;
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struct hash_item_t *p_next;
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};
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typedef struct hash_item_t HASH_ITEM;
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struct hash_dict_t
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{
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HASH_ITEM **buckets[HASH_DICT_BUCKET_MAX_COUNT];
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unsigned int bucket_count;
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unsigned int prime_index;
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MEMORY_POOL *p_item_pool;
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unsigned int item_count;
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};
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typedef struct hash_dict_t HASH_DICT;
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extern HASH_DICT *hash_dict_create(int item_count_limit);
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extern void hash_dict_destroy(HASH_DICT *p_dict);
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// Return 1 if existing key updated, 0 if new key added, -1 on error
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extern int hash_dict_set(HASH_DICT *p_dict, uint64_t key, int64_t value);
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// Return 1 if existing key updated, 0 if key not exist, -1 on error
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extern int hash_dict_inc(HASH_DICT *p_dict, uint64_t key, int64_t value_inc);
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// Return 1 if key found, 0 if key not exist, -1 on error
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extern int hash_dict_get(HASH_DICT *p_dict, uint64_t key, int64_t *p_value);
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// Return 1 if key deleted, 0 if key not exist, -1 on error
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extern int hash_dict_del(HASH_DICT *p_dict, uint64_t key);
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inline unsigned int hash_dict_item_count(HASH_DICT *p_dict)
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{
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if (p_dict == NULL)
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{
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return 0;
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}
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return p_dict->item_count;
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}
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#endif //_HASH_DICT_H_
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