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Diffstat (limited to 'openssl/crypto/lhash/lhash.h')
| -rw-r--r-- | openssl/crypto/lhash/lhash.h | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/openssl/crypto/lhash/lhash.h b/openssl/crypto/lhash/lhash.h new file mode 100644 index 000000000..d392d0cd8 --- /dev/null +++ b/openssl/crypto/lhash/lhash.h @@ -0,0 +1,200 @@ +/* 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 + |