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lhash.h
/* * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ /* * Header for dynamic hash table routines Author - Eric Young */ #ifndef HEADER_LHASH_H # define HEADER_LHASH_H # include <openssl/e_os2.h> # include <openssl/bio.h> #ifdef __cplusplus extern "C" { #endif typedef struct lhash_node_st OPENSSL_LH_NODE; typedef int (*OPENSSL_LH_COMPFUNC) (const void *, const void *); typedef unsigned long (*OPENSSL_LH_HASHFUNC) (const void *); typedef void (*OPENSSL_LH_DOALL_FUNC) (void *); typedef void (*OPENSSL_LH_DOALL_FUNCARG) (void *, void *); typedef struct lhash_st OPENSSL_LHASH; /* * 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 /* 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 # define LH_LOAD_MULT 256 int OPENSSL_LH_error(OPENSSL_LHASH *lh); OPENSSL_LHASH *OPENSSL_LH_new(OPENSSL_LH_HASHFUNC h, OPENSSL_LH_COMPFUNC c); void OPENSSL_LH_free(OPENSSL_LHASH *lh); void *OPENSSL_LH_insert(OPENSSL_LHASH *lh, void *data); void *OPENSSL_LH_delete(OPENSSL_LHASH *lh, const void *data); void *OPENSSL_LH_retrieve(OPENSSL_LHASH *lh, const void *data); void OPENSSL_LH_doall(OPENSSL_LHASH *lh, OPENSSL_LH_DOALL_FUNC func); void OPENSSL_LH_doall_arg(OPENSSL_LHASH *lh, OPENSSL_LH_DOALL_FUNCARG func, void *arg); unsigned long OPENSSL_LH_strhash(const char *c); unsigned long OPENSSL_LH_num_items(const OPENSSL_LHASH *lh); unsigned long OPENSSL_LH_get_down_load(const OPENSSL_LHASH *lh); void OPENSSL_LH_set_down_load(OPENSSL_LHASH *lh, unsigned long down_load); # ifndef OPENSSL_NO_STDIO void OPENSSL_LH_stats(const OPENSSL_LHASH *lh, FILE *fp); void OPENSSL_LH_node_stats(const OPENSSL_LHASH *lh, FILE *fp); void OPENSSL_LH_node_usage_stats(const OPENSSL_LHASH *lh, FILE *fp); # endif void OPENSSL_LH_stats_bio(const OPENSSL_LHASH *lh, BIO *out); void OPENSSL_LH_node_stats_bio(const OPENSSL_LHASH *lh, BIO *out); void OPENSSL_LH_node_usage_stats_bio(const OPENSSL_LHASH *lh, BIO *out); # if OPENSSL_API_COMPAT < 0x10100000L # define _LHASH OPENSSL_LHASH # define LHASH_NODE OPENSSL_LH_NODE # define lh_error OPENSSL_LH_error # define lh_new OPENSSL_LH_new # define lh_free OPENSSL_LH_free # define lh_insert OPENSSL_LH_insert # define lh_delete OPENSSL_LH_delete # define lh_retrieve OPENSSL_LH_retrieve # define lh_doall OPENSSL_LH_doall # define lh_doall_arg OPENSSL_LH_doall_arg # define lh_strhash OPENSSL_LH_strhash # define lh_num_items OPENSSL_LH_num_items # ifndef OPENSSL_NO_STDIO # define lh_stats OPENSSL_LH_stats # define lh_node_stats OPENSSL_LH_node_stats # define lh_node_usage_stats OPENSSL_LH_node_usage_stats # endif # define lh_stats_bio OPENSSL_LH_stats_bio # define lh_node_stats_bio OPENSSL_LH_node_stats_bio # define lh_node_usage_stats_bio OPENSSL_LH_node_usage_stats_bio # endif /* Type checking... */ # define LHASH_OF(type) struct lhash_st_##type # define DEFINE_LHASH_OF(type) \ LHASH_OF(type) { union lh_##type##_dummy { void* d1; unsigned long d2; int d3; } dummy; }; \ static ossl_unused ossl_inline LHASH_OF(type) *lh_##type##_new(unsigned long (*hfn)(const type *), \ int (*cfn)(const type *, const type *)) \ { \ return (LHASH_OF(type) *) \ OPENSSL_LH_new((OPENSSL_LH_HASHFUNC)hfn, (OPENSSL_LH_COMPFUNC)cfn); \ } \ static ossl_unused ossl_inline void lh_##type##_free(LHASH_OF(type) *lh) \ { \ OPENSSL_LH_free((OPENSSL_LHASH *)lh); \ } \ static ossl_unused ossl_inline type *lh_##type##_insert(LHASH_OF(type) *lh, type *d) \ { \ return (type *)OPENSSL_LH_insert((OPENSSL_LHASH *)lh, d); \ } \ static ossl_unused ossl_inline type *lh_##type##_delete(LHASH_OF(type) *lh, const type *d) \ { \ return (type *)OPENSSL_LH_delete((OPENSSL_LHASH *)lh, d); \ } \ static ossl_unused ossl_inline type *lh_##type##_retrieve(LHASH_OF(type) *lh, const type *d) \ { \ return (type *)OPENSSL_LH_retrieve((OPENSSL_LHASH *)lh, d); \ } \ static ossl_unused ossl_inline int lh_##type##_error(LHASH_OF(type) *lh) \ { \ return OPENSSL_LH_error((OPENSSL_LHASH *)lh); \ } \ static ossl_unused ossl_inline unsigned long lh_##type##_num_items(LHASH_OF(type) *lh) \ { \ return OPENSSL_LH_num_items((OPENSSL_LHASH *)lh); \ } \ static ossl_unused ossl_inline void lh_##type##_node_stats_bio(const LHASH_OF(type) *lh, BIO *out) \ { \ OPENSSL_LH_node_stats_bio((const OPENSSL_LHASH *)lh, out); \ } \ static ossl_unused ossl_inline void lh_##type##_node_usage_stats_bio(const LHASH_OF(type) *lh, BIO *out) \ { \ OPENSSL_LH_node_usage_stats_bio((const OPENSSL_LHASH *)lh, out); \ } \ static ossl_unused ossl_inline void lh_##type##_stats_bio(const LHASH_OF(type) *lh, BIO *out) \ { \ OPENSSL_LH_stats_bio((const OPENSSL_LHASH *)lh, out); \ } \ static ossl_unused ossl_inline unsigned long lh_##type##_get_down_load(LHASH_OF(type) *lh) \ { \ return OPENSSL_LH_get_down_load((OPENSSL_LHASH *)lh); \ } \ static ossl_unused ossl_inline void lh_##type##_set_down_load(LHASH_OF(type) *lh, unsigned long dl) \ { \ OPENSSL_LH_set_down_load((OPENSSL_LHASH *)lh, dl); \ } \ static ossl_unused ossl_inline void lh_##type##_doall(LHASH_OF(type) *lh, \ void (*doall)(type *)) \ { \ OPENSSL_LH_doall((OPENSSL_LHASH *)lh, (OPENSSL_LH_DOALL_FUNC)doall); \ } \ LHASH_OF(type) #define IMPLEMENT_LHASH_DOALL_ARG_CONST(type, argtype) \ int_implement_lhash_doall(type, argtype, const type) #define IMPLEMENT_LHASH_DOALL_ARG(type, argtype) \ int_implement_lhash_doall(type, argtype, type) #define int_implement_lhash_doall(type, argtype, cbargtype) \ static ossl_unused ossl_inline void \ lh_##type##_doall_##argtype(LHASH_OF(type) *lh, \ void (*fn)(cbargtype *, argtype *), \ argtype *arg) \ { \ OPENSSL_LH_doall_arg((OPENSSL_LHASH *)lh, (OPENSSL_LH_DOALL_FUNCARG)fn, (void *)arg); \ } \ LHASH_OF(type) DEFINE_LHASH_OF(OPENSSL_STRING); # ifdef _MSC_VER /* * push and pop this warning: * warning C4090: 'function': different 'const' qualifiers */ # pragma warning (push) # pragma warning (disable: 4090) # endif DEFINE_LHASH_OF(OPENSSL_CSTRING); # ifdef _MSC_VER # pragma warning (pop) # endif /* * If called without higher optimization (min. -xO3) the Oracle Developer * Studio compiler generates code for the defined (static inline) functions * above. * This would later lead to the linker complaining about missing symbols when * this header file is included but the resulting object is not linked against * the Crypto library (openssl#6912). */ # ifdef __SUNPRO_C # pragma weak OPENSSL_LH_new # pragma weak OPENSSL_LH_free # pragma weak OPENSSL_LH_insert # pragma weak OPENSSL_LH_delete # pragma weak OPENSSL_LH_retrieve # pragma weak OPENSSL_LH_error # pragma weak OPENSSL_LH_num_items # pragma weak OPENSSL_LH_node_stats_bio # pragma weak OPENSSL_LH_node_usage_stats_bio # pragma weak OPENSSL_LH_stats_bio # pragma weak OPENSSL_LH_get_down_load # pragma weak OPENSSL_LH_set_down_load # pragma weak OPENSSL_LH_doall # pragma weak OPENSSL_LH_doall_arg # endif /* __SUNPRO_C */ #ifdef __cplusplus } #endif #endif
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