/* 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#ifndef OPENSSL_NO_FP_API#include <stdio.h>#endif#ifndef OPENSSL_NO_BIO#include <openssl/bio.h>#endif#ifdef  __cplusplusextern "C" {#endif    typedef struct lhash_node_st {	const 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) (const void *);    typedef void (*LHASH_DOALL_ARG_FN_TYPE) (const 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(const void *);#define IMPLEMENT_LHASH_DOALL_FN(f_name,o_type) \	void f_name##_LHASH_DOALL(const 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(const void *, void *);#define IMPLEMENT_LHASH_DOALL_ARG_FN(f_name,o_type,a_type) \	void f_name##_LHASH_DOALL_ARG(const 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, const 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