source: trunk/sys/libcrypto/include/openssl/lhash.h @ 1

Last change on this file since 1 was 1, checked in by alain, 5 years ago

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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//#include <openssl/e_os2.h>
67#ifndef OPENSSL_NO_FP_API
68#include <stdio.h>
69#endif
70
71#ifndef OPENSSL_NO_BIO
72#include "bio.h"
73#endif
74
75#ifdef  __cplusplus
76extern "C" {
77#endif
78
79typedef struct lhash_node_st
80        {
81        void *data;
82        struct lhash_node_st *next;
83#ifndef OPENSSL_NO_HASH_COMP
84        unsigned long hash;
85#endif
86        } LHASH_NODE;
87
88typedef int (*LHASH_COMP_FN_TYPE)(const void *, const void *);
89typedef unsigned long (*LHASH_HASH_FN_TYPE)(const void *);
90typedef void (*LHASH_DOALL_FN_TYPE)(void *);
91typedef void (*LHASH_DOALL_ARG_FN_TYPE)(void *, void *);
92
93/* Macros for declaring and implementing type-safe wrappers for LHASH callbacks.
94 * This way, callbacks can be provided to LHASH structures without function
95 * pointer casting and the macro-defined callbacks provide per-variable casting
96 * before deferring to the underlying type-specific callbacks. NB: It is
97 * possible to place a "static" in front of both the DECLARE and IMPLEMENT
98 * macros if the functions are strictly internal. */
99
100/* First: "hash" functions */
101#define DECLARE_LHASH_HASH_FN(f_name,o_type) \
102        unsigned long f_name##_LHASH_HASH(const void *);
103#define IMPLEMENT_LHASH_HASH_FN(f_name,o_type) \
104        unsigned long f_name##_LHASH_HASH(const void *arg) { \
105                o_type a = (o_type)arg; \
106                return f_name(a); }
107#define LHASH_HASH_FN(f_name) f_name##_LHASH_HASH
108
109/* Second: "compare" functions */
110#define DECLARE_LHASH_COMP_FN(f_name,o_type) \
111        int f_name##_LHASH_COMP(const void *, const void *);
112#define IMPLEMENT_LHASH_COMP_FN(f_name,o_type) \
113        int f_name##_LHASH_COMP(const void *arg1, const void *arg2) { \
114                o_type a = (o_type)arg1; \
115                o_type b = (o_type)arg2; \
116                return f_name(a,b); }
117#define LHASH_COMP_FN(f_name) f_name##_LHASH_COMP
118
119/* Third: "doall" functions */
120#define DECLARE_LHASH_DOALL_FN(f_name,o_type) \
121        void f_name##_LHASH_DOALL(void *);
122#define IMPLEMENT_LHASH_DOALL_FN(f_name,o_type) \
123        void f_name##_LHASH_DOALL(void *arg) { \
124                o_type a = (o_type)arg; \
125                f_name(a); }
126#define LHASH_DOALL_FN(f_name) f_name##_LHASH_DOALL
127
128/* Fourth: "doall_arg" functions */
129#define DECLARE_LHASH_DOALL_ARG_FN(f_name,o_type,a_type) \
130        void f_name##_LHASH_DOALL_ARG(void *, void *);
131#define IMPLEMENT_LHASH_DOALL_ARG_FN(f_name,o_type,a_type) \
132        void f_name##_LHASH_DOALL_ARG(void *arg1, void *arg2) { \
133                o_type a = (o_type)arg1; \
134                a_type b = (a_type)arg2; \
135                f_name(a,b); }
136#define LHASH_DOALL_ARG_FN(f_name) f_name##_LHASH_DOALL_ARG
137
138typedef struct lhash_st
139        {
140        LHASH_NODE **b;
141        LHASH_COMP_FN_TYPE comp;
142        LHASH_HASH_FN_TYPE hash;
143        unsigned int num_nodes;
144        unsigned int num_alloc_nodes;
145        unsigned int p;
146        unsigned int pmax;
147        unsigned long up_load; /* load times 256 */
148        unsigned long down_load; /* load times 256 */
149        unsigned long num_items;
150
151        unsigned long num_expands;
152        unsigned long num_expand_reallocs;
153        unsigned long num_contracts;
154        unsigned long num_contract_reallocs;
155        unsigned long num_hash_calls;
156        unsigned long num_comp_calls;
157        unsigned long num_insert;
158        unsigned long num_replace;
159        unsigned long num_delete;
160        unsigned long num_no_delete;
161        unsigned long num_retrieve;
162        unsigned long num_retrieve_miss;
163        unsigned long num_hash_comps;
164
165        int error;
166        } LHASH;
167
168#define LH_LOAD_MULT    256
169
170/* Indicates a malloc() error in the last call, this is only bad
171 * in lh_insert(). */
172#define lh_error(lh)    ((lh)->error)
173
174LHASH *lh_new(LHASH_HASH_FN_TYPE h, LHASH_COMP_FN_TYPE c);
175void lh_free(LHASH *lh);
176void *lh_insert(LHASH *lh, void *data);
177void *lh_delete(LHASH *lh, const void *data);
178void *lh_retrieve(LHASH *lh, const void *data);
179void lh_doall(LHASH *lh, LHASH_DOALL_FN_TYPE func);
180void lh_doall_arg(LHASH *lh, LHASH_DOALL_ARG_FN_TYPE func, void *arg);
181unsigned long lh_strhash(const char *c);
182unsigned long lh_num_items(const LHASH *lh);
183
184#ifndef OPENSSL_NO_FP_API
185void lh_stats(const LHASH *lh, FILE *out);
186void lh_node_stats(const LHASH *lh, FILE *out);
187void lh_node_usage_stats(const LHASH *lh, FILE *out);
188#endif
189
190#ifndef OPENSSL_NO_BIO
191void lh_stats_bio(const LHASH *lh, BIO *out);
192void lh_node_stats_bio(const LHASH *lh, BIO *out);
193void lh_node_usage_stats_bio(const LHASH *lh, BIO *out);
194#endif
195#ifdef  __cplusplus
196}
197#endif
198
199#endif
200
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