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1/* crypto/lhash/lhash.h */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59/* Header for dynamic hash table routines
60 * Author - Eric Young
61 */
62
63#ifndef HEADER_LHASH_H
64#define HEADER_LHASH_H
65
66#ifndef NO_FP_API
67#include <stdio.h>
68#endif
69
70#ifndef NO_BIO
71#include <openssl/bio.h>
72#endif
73
74#ifdef __cplusplus
75extern "C" {
76#endif
77
78typedef struct lhash_node_st
79 {
80 void *data;
81 struct lhash_node_st *next;
82#ifndef NO_HASH_COMP
83 unsigned long hash;
84#endif
85 } LHASH_NODE;
86
87typedef struct lhash_st
88 {
89 LHASH_NODE **b;
90 int (*comp)();
91 unsigned long (*hash)();
92 unsigned int num_nodes;
93 unsigned int num_alloc_nodes;
94 unsigned int p;
95 unsigned int pmax;
96 unsigned long up_load; /* load times 256 */
97 unsigned long down_load; /* load times 256 */
98 unsigned long num_items;
99
100 unsigned long num_expands;
101 unsigned long num_expand_reallocs;
102 unsigned long num_contracts;
103 unsigned long num_contract_reallocs;
104 unsigned long num_hash_calls;
105 unsigned long num_comp_calls;
106 unsigned long num_insert;
107 unsigned long num_replace;
108 unsigned long num_delete;
109 unsigned long num_no_delete;
110 unsigned long num_retrieve;
111 unsigned long num_retrieve_miss;
112 unsigned long num_hash_comps;
113
114 int error;
115 } LHASH;
116
117#define LH_LOAD_MULT 256
118
119/* Indicates a malloc() error in the last call, this is only bad
120 * in lh_insert(). */
121#define lh_error(lh) ((lh)->error)
122
123LHASH *lh_new(unsigned long (*h)(/* void *a */), int (*c)(/* void *a,void *b */));
124void lh_free(LHASH *lh);
125void *lh_insert(LHASH *lh, void *data);
126void *lh_delete(LHASH *lh, void *data);
127void *lh_retrieve(LHASH *lh, void *data);
128 void lh_doall(LHASH *lh, void (*func)(/*void *b*/));
129void lh_doall_arg(LHASH *lh, void (*func)(/*void *a,void *b*/),void *arg);
130unsigned long lh_strhash(const char *c);
131unsigned long lh_num_items(LHASH *lh);
132
133#ifndef NO_FP_API
134void lh_stats(LHASH *lh, FILE *out);
135void lh_node_stats(LHASH *lh, FILE *out);
136void lh_node_usage_stats(LHASH *lh, FILE *out);
137#endif
138
139#ifndef NO_BIO
140void lh_stats_bio(LHASH *lh, BIO *out);
141void lh_node_stats_bio(LHASH *lh, BIO *out);
142void lh_node_usage_stats_bio(LHASH *lh, BIO *out);
143#endif
144#ifdef __cplusplus
145}
146#endif
147
148#endif
149