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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#ifdef __cplusplus
67extern "C" {
68#endif
69
70#ifndef NO_FP_API
71#include <stdio.h>
72#endif
73
74typedef struct lhash_node_st
75 {
76 char *data;
77 struct lhash_node_st *next;
78#ifndef NO_HASH_COMP
79 unsigned long hash;
80#endif
81 } LHASH_NODE;
82
83typedef struct lhash_st
84 {
85 LHASH_NODE **b;
86 int (*comp)();
87 unsigned long (*hash)();
88 unsigned int num_nodes;
89 unsigned int num_alloc_nodes;
90 unsigned int p;
91 unsigned int pmax;
92 unsigned long up_load; /* load times 256 */
93 unsigned long down_load; /* load times 256 */
94 unsigned long num_items;
95
96 unsigned long num_expands;
97 unsigned long num_expand_reallocs;
98 unsigned long num_contracts;
99 unsigned long num_contract_reallocs;
100 unsigned long num_hash_calls;
101 unsigned long num_comp_calls;
102 unsigned long num_insert;
103 unsigned long num_replace;
104 unsigned long num_delete;
105 unsigned long num_no_delete;
106 unsigned long num_retrieve;
107 unsigned long num_retrieve_miss;
108 unsigned long num_hash_comps;
109
110 int error;
111 } LHASH;
112
113#define LH_LOAD_MULT 256
114
115/* Indicates a malloc() error in the last call, this is only bad
116 * in lh_insert(). */
117#define lh_error(lh) ((lh)->error)
118
119LHASH *lh_new(unsigned long (*h)(), int (*c)());
120void lh_free(LHASH *lh);
121char *lh_insert(LHASH *lh, char *data);
122char *lh_delete(LHASH *lh, char *data);
123char *lh_retrieve(LHASH *lh, char *data);
124void lh_doall(LHASH *lh, void (*func)(/* char *b */));
125void lh_doall_arg(LHASH *lh, void (*func)(/*char *a,char *b*/),char *arg);
126unsigned long lh_strhash(const char *c);
127
128#ifndef NO_FP_API
129void lh_stats(LHASH *lh, FILE *out);
130void lh_node_stats(LHASH *lh, FILE *out);
131void lh_node_usage_stats(LHASH *lh, FILE *out);
132#endif
133
134#ifdef HEADER_BIO_H
135void lh_stats_bio(LHASH *lh, BIO *out);
136void lh_node_stats_bio(LHASH *lh, BIO *out);
137void lh_node_usage_stats_bio(LHASH *lh, BIO *out);
138#endif
139#ifdef __cplusplus
140}
141#endif
142
143#endif
144