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/*
* Copyright (c) 2008-2024 OARC, Inc.
* Copyright (c) 2007-2008, Internet Systems Consortium, Inc.
* Copyright (c) 2003-2007, The Measurement Factory, Inc.
* All rights reserved.
*
* 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 above 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. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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
* COPYRIGHT HOLDER 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.
*/
#ifndef __dsc_hashtbl_h
#define __dsc_hashtbl_h
#include <stddef.h>
#include <stdint.h>
typedef struct _hashitem {
const void* key;
void* data;
struct _hashitem* next;
} hashitem;
typedef unsigned int hashfunc(const void* key);
typedef int hashkeycmp(const void* a, const void* b);
typedef void hashfree(void* p);
typedef struct
{
unsigned int modulus;
hashitem** items;
hashfunc* hasher;
hashkeycmp* keycmp;
int use_arena;
hashfree* keyfree;
hashfree* datafree;
struct
{
hashitem* next;
unsigned int slot;
} iter;
} hashtbl;
hashtbl* hash_create(int N, hashfunc*, hashkeycmp*, int use_arena, hashfree*, hashfree*);
void hash_destroy(hashtbl*);
int hash_add(const void* key, void* data, hashtbl*);
void hash_remove(const void* key, hashtbl* tbl);
void* hash_find(const void* key, hashtbl*);
void hash_iter_init(hashtbl*);
void* hash_iterate(hashtbl*);
// dst needs to be at least len * 2 in size
void strtohex(char* dst, const char* src, size_t len);
/*
* found in lookup3.c
*/
extern uint32_t hashlittle(const void* key, size_t length, uint32_t initval);
extern uint32_t hashbig(const void* key, size_t length, uint32_t initval);
extern uint32_t hashword(const uint32_t* k, size_t length, uint32_t initval);
#ifdef HAVE_ENDIAN_H
#include <endian.h>
#endif
#ifdef HAVE_SYS_ENDIAN_H
#include <sys/endian.h>
#endif
#ifdef HAVE_MACHINE_ENDIAN_H
#include <machine/endian.h>
#endif
#ifndef __BYTE_ORDER
#if defined(BYTE_ORDER)
#define __BYTE_ORDER BYTE_ORDER
#elif defined(_BYTE_ORDER)
#define __BYTE_ORDER _BYTE_ORDER
#else
#error "No byte order define, please fix"
#endif
#endif
#ifndef __LITTLE_ENDIAN
#if defined(LITTLE_ENDIAN)
#define __LITTLE_ENDIAN LITTLE_ENDIAN
#elif defined(_LITTLE_ENDIAN)
#define __LITTLE_ENDIAN _LITTLE_ENDIAN
#else
#error "No little endian define, please fix"
#endif
#endif
#ifndef __BIG_ENDIAN
#if defined(BIG_ENDIAN)
#define __BIG_ENDIAN BIG_ENDIAN
#elif defined(_BIG_ENDIAN)
#define __BIG_ENDIAN _BIG_ENDIAN
#else
#error "No big endian define, please fix"
#endif
#endif
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define hashendian hashlittle
#elif __BYTE_ORDER == __BIG_ENDIAN
#define hashendian hashbig
#else
#error "No byte order define, please fix"
#endif
#endif /* __dsc_hashtbl_h */
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