1 /* $OpenBSD: hash.h,v 1.3 2017/05/30 17:22:00 yasuoka Exp $ */ 2 /*- 3 * Copyright (c) 2009 Internet Initiative Japan Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 /* $Id: hash.h,v 1.3 2017/05/30 17:22:00 yasuoka Exp $ */ 28 #ifndef HASH_H 29 #define HASH_H 30 31 #ifndef HASH_SIZE 32 #define HASH_SIZE 127 33 #endif 34 35 typedef struct HASH_LINK { 36 const void *key; 37 struct HASH_LINK *next; 38 void *item; 39 } hash_link; 40 41 typedef struct { 42 int (*cmp) (const void *, const void *); 43 uint32_t (*hash) (const void *, int); 44 hash_link **bucket; 45 size_t size; 46 int cur; 47 hash_link *bucket_cur; 48 } hash_table; 49 50 #ifdef __cplusplus 51 extern "C" { 52 #endif 53 hash_table *hash_create(int (*)(const void *, const void *), uint32_t (*) (const void *, int), int); 54 hash_link *hash_first(hash_table *); 55 hash_link *hash_next(hash_table *); 56 hash_link *hash_lookup(hash_table *, const void *); 57 int hash_insert(hash_table *, const void *, void *); 58 int hash_delete(hash_table *, const void *, int); 59 void hash_delete_all(hash_table *, int); 60 void hash_free(hash_table *); 61 62 #ifdef __cplusplus 63 } 64 #endif 65 66 #endif /* HASH_H */ 67