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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(name, o_type) \ unsigned long name##_LHASH_HASH(const void *); # define IMPLEMENT_LHASH_HASH_FN(name, o_type) \ unsigned long name##_LHASH_HASH(const void *arg) { \ const o_type *a = arg; \ return name##_hash(a); } # define LHASH_HASH_FN(name) name##_LHASH_HASH /* Second: "compare" functions */ # define DECLARE_LHASH_COMP_FN(name, o_type) \ int name##_LHASH_COMP(const void *, const void *); # define IMPLEMENT_LHASH_COMP_FN(name, o_type) \ int name##_LHASH_COMP(const void *arg1, const void *arg2) { \ const o_type *a = arg1; \ const o_type *b = arg2; \ return name##_cmp(a,b); } # define LHASH_COMP_FN(name) name##_LHASH_COMP /* Third: "doall" functions */ # define DECLARE_LHASH_DOALL_FN(name, o_type) \ void name##_LHASH_DOALL(void *); # define IMPLEMENT_LHASH_DOALL_FN(name, o_type) \ void name##_LHASH_DOALL(void *arg) { \ o_type *a = arg; \ name##_doall(a); } # define LHASH_DOALL_FN(name) name##_LHASH_DOALL /* Fourth: "doall_arg" functions */ # define DECLARE_LHASH_DOALL_ARG_FN(name, o_type, a_type) \ void name##_LHASH_DOALL_ARG(void *, void *); # define IMPLEMENT_LHASH_DOALL_ARG_FN(name, o_type, a_type) \ void name##_LHASH_DOALL_ARG(void *arg1, void *arg2) { \ o_type *a = arg1; \ a_type *b = arg2; \ name##_doall_arg(a, b); } # define LHASH_DOALL_ARG_FN(name) 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; /* Do not use _LHASH directly, use LHASH_OF * and friends */ # 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 /* Type checking... */ # define LHASH_OF(type) struct lhash_st_##type # define DECLARE_LHASH_OF(type) LHASH_OF(type) { int dummy; } # define CHECKED_LHASH_OF(type,lh) \ ((_LHASH *)CHECKED_PTR_OF(LHASH_OF(type),lh)) /* Define wrapper functions. */ # define LHM_lh_new(type, name) \ ((LHASH_OF(type) *)lh_new(LHASH_HASH_FN(name), LHASH_COMP_FN(name))) # define LHM_lh_error(type, lh) \ lh_error(CHECKED_LHASH_OF(type,lh)) # define LHM_lh_insert(type, lh, inst) \ ((type *)lh_insert(CHECKED_LHASH_OF(type, lh), \ CHECKED_PTR_OF(type, inst))) # define LHM_lh_retrieve(type, lh, inst) \ ((type *)lh_retrieve(CHECKED_LHASH_OF(type, lh), \ CHECKED_PTR_OF(type, inst))) # define LHM_lh_delete(type, lh, inst) \ ((type *)lh_delete(CHECKED_LHASH_OF(type, lh), \ CHECKED_PTR_OF(type, inst))) # define LHM_lh_doall(type, lh,fn) lh_doall(CHECKED_LHASH_OF(type, lh), fn) # define LHM_lh_doall_arg(type, lh, fn, arg_type, arg) \ lh_doall_arg(CHECKED_LHASH_OF(type, lh), fn, CHECKED_PTR_OF(arg_type, arg)) # define LHM_lh_num_items(type, lh) lh_num_items(CHECKED_LHASH_OF(type, lh)) # define LHM_lh_down_load(type, lh) (CHECKED_LHASH_OF(type, lh)->down_load) # define LHM_lh_node_stats_bio(type, lh, out) \ lh_node_stats_bio(CHECKED_LHASH_OF(type, lh), out) # define LHM_lh_node_usage_stats_bio(type, lh, out) \ lh_node_usage_stats_bio(CHECKED_LHASH_OF(type, lh), out) # define LHM_lh_stats_bio(type, lh, out) \ lh_stats_bio(CHECKED_LHASH_OF(type, lh), out) # define LHM_lh_free(type, lh) lh_free(CHECKED_LHASH_OF(type, lh)) DECLARE_LHASH_OF(OPENSSL_STRING); DECLARE_LHASH_OF(OPENSSL_CSTRING); #ifdef __cplusplus } #endif #endif