71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
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/*
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* Copyright (c) 2016-2021, OARC, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __dnscap_hashtbl_h
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#define __dnscap_hashtbl_h
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#define HASHTBL_EARGS -1
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#define HASHTBL_ENOMEM -2
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typedef struct hashitem hashitem;
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struct hashitem {
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const void* key;
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void* data;
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hashitem* next;
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};
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typedef unsigned int (*hashkey_func)(const void* key);
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typedef int (*hashkeycmp_func)(const void* a, const void* b);
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typedef void (*hashfree_func)(void* data);
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typedef struct hashtbl hashtbl;
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struct hashtbl {
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unsigned int modulus;
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hashitem** items;
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hashkey_func hasher;
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hashkeycmp_func keycmp;
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hashfree_func datafree;
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};
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hashtbl* hash_create(unsigned int N, hashkey_func hasher, hashkeycmp_func cmp, hashfree_func datafree);
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int hash_add(const void* key, void* data, hashtbl* tbl);
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void* hash_find(const void* key, hashtbl* tbl);
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void hash_remove(const void* key, hashtbl* tbl);
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void hash_free(hashtbl* tbl);
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void hash_destroy(hashtbl* tbl);
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#endif // __dnscap_hashtbl_h
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