lhash.h
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- /* crypto/lhash/lhash.h */
- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
- /* Header for dynamic hash table routines
- * Author - Eric Young
- */
- #ifndef HEADER_LHASH_H
- #define HEADER_LHASH_H
- #include <openssl/e_os2.h>
- #ifndef OPENSSL_NO_FP_API
- #include <stdio.h>
- #endif
- #ifndef OPENSSL_NO_BIO
- #include <openssl/bio.h>
- #endif
- #ifdef __cplusplus
- extern "C" {
- #endif
- typedef struct lhash_node_st
- {
- void *data;
- struct lhash_node_st *next;
- #ifndef OPENSSL_NO_HASH_COMP
- unsigned long hash;
- #endif
- } LHASH_NODE;
- typedef int (*LHASH_COMP_FN_TYPE)(const void *, const void *);
- typedef unsigned long (*LHASH_HASH_FN_TYPE)(const void *);
- typedef void (*LHASH_DOALL_FN_TYPE)(void *);
- typedef void (*LHASH_DOALL_ARG_FN_TYPE)(void *, void *);
- /* Macros for declaring and implementing type-safe wrappers for LHASH callbacks.
- * This way, callbacks can be provided to LHASH structures without function
- * pointer casting and the macro-defined callbacks provide per-variable casting
- * before deferring to the underlying type-specific callbacks. NB: It is
- * possible to place a "static" in front of both the DECLARE and IMPLEMENT
- * macros if the functions are strictly internal. */
- /* First: "hash" functions */
- #define DECLARE_LHASH_HASH_FN(f_name,o_type)
- unsigned long f_name##_LHASH_HASH(const void *);
- #define IMPLEMENT_LHASH_HASH_FN(f_name,o_type)
- unsigned long f_name##_LHASH_HASH(const void *arg) {
- o_type a = (o_type)arg;
- return f_name(a); }
- #define LHASH_HASH_FN(f_name) f_name##_LHASH_HASH
- /* Second: "compare" functions */
- #define DECLARE_LHASH_COMP_FN(f_name,o_type)
- int f_name##_LHASH_COMP(const void *, const void *);
- #define IMPLEMENT_LHASH_COMP_FN(f_name,o_type)
- int f_name##_LHASH_COMP(const void *arg1, const void *arg2) {
- o_type a = (o_type)arg1;
- o_type b = (o_type)arg2;
- return f_name(a,b); }
- #define LHASH_COMP_FN(f_name) f_name##_LHASH_COMP
- /* Third: "doall" functions */
- #define DECLARE_LHASH_DOALL_FN(f_name,o_type)
- void f_name##_LHASH_DOALL(void *);
- #define IMPLEMENT_LHASH_DOALL_FN(f_name,o_type)
- void f_name##_LHASH_DOALL(void *arg) {
- o_type a = (o_type)arg;
- f_name(a); }
- #define LHASH_DOALL_FN(f_name) f_name##_LHASH_DOALL
- /* Fourth: "doall_arg" functions */
- #define DECLARE_LHASH_DOALL_ARG_FN(f_name,o_type,a_type)
- void f_name##_LHASH_DOALL_ARG(void *, void *);
- #define IMPLEMENT_LHASH_DOALL_ARG_FN(f_name,o_type,a_type)
- void f_name##_LHASH_DOALL_ARG(void *arg1, void *arg2) {
- o_type a = (o_type)arg1;
- a_type b = (a_type)arg2;
- f_name(a,b); }
- #define LHASH_DOALL_ARG_FN(f_name) f_name##_LHASH_DOALL_ARG
- typedef struct lhash_st
- {
- LHASH_NODE **b;
- LHASH_COMP_FN_TYPE comp;
- LHASH_HASH_FN_TYPE hash;
- unsigned int num_nodes;
- unsigned int num_alloc_nodes;
- unsigned int p;
- unsigned int pmax;
- unsigned long up_load; /* load times 256 */
- unsigned long down_load; /* load times 256 */
- unsigned long num_items;
- unsigned long num_expands;
- unsigned long num_expand_reallocs;
- unsigned long num_contracts;
- unsigned long num_contract_reallocs;
- unsigned long num_hash_calls;
- unsigned long num_comp_calls;
- unsigned long num_insert;
- unsigned long num_replace;
- unsigned long num_delete;
- unsigned long num_no_delete;
- unsigned long num_retrieve;
- unsigned long num_retrieve_miss;
- unsigned long num_hash_comps;
- int error;
- } LHASH;
- #define LH_LOAD_MULT 256
- /* Indicates a malloc() error in the last call, this is only bad
- * in lh_insert(). */
- #define lh_error(lh) ((lh)->error)
- LHASH *lh_new(LHASH_HASH_FN_TYPE h, LHASH_COMP_FN_TYPE c);
- void lh_free(LHASH *lh);
- void *lh_insert(LHASH *lh, void *data);
- void *lh_delete(LHASH *lh, const void *data);
- void *lh_retrieve(LHASH *lh, const void *data);
- void lh_doall(LHASH *lh, LHASH_DOALL_FN_TYPE func);
- void lh_doall_arg(LHASH *lh, LHASH_DOALL_ARG_FN_TYPE func, void *arg);
- unsigned long lh_strhash(const char *c);
- unsigned long lh_num_items(const LHASH *lh);
- #ifndef OPENSSL_NO_FP_API
- void lh_stats(const LHASH *lh, FILE *out);
- void lh_node_stats(const LHASH *lh, FILE *out);
- void lh_node_usage_stats(const LHASH *lh, FILE *out);
- #endif
- #ifndef OPENSSL_NO_BIO
- void lh_stats_bio(const LHASH *lh, BIO *out);
- void lh_node_stats_bio(const LHASH *lh, BIO *out);
- void lh_node_usage_stats_bio(const LHASH *lh, BIO *out);
- #endif
- #ifdef __cplusplus
- }
- #endif
- #endif