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hash: allow registing with a seed value

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Seed value will have to be used by the caller's hash function.
This commit is contained in:
Victor Julien
2026-06-01 15:56:59 +00:00
parent 730ff5075d
commit b742d58544
2 changed files with 17 additions and 1 deletions
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src/util-hash.c
+13 -1
View File
@@ -1,4 +1,4 @@
/* Copyright (C) 2007-2010 Open Information Security Foundation
/* Copyright (C) 2007-2026 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
@@ -75,6 +75,18 @@ error:
return NULL;
}
HashTable *HashTableInitWithSeed(uint32_t size,
uint32_t (*Hash)(struct HashTable_ *, void *, uint16_t),
char (*Compare)(void *, uint16_t, void *, uint16_t), void (*Free)(void *),
const uint32_t seed)
{
HashTable *ht = HashTableInit(size, Hash, Compare, Free);
if (ht != NULL) {
ht->seed = seed;
}
return ht;
}
/**
* \brief Free a HashTableBucket and return the next bucket
* \param ht Pointer to the HashTable
src/util-hash.h
+4
View File
@@ -35,6 +35,7 @@ typedef struct HashTableBucket_ {
typedef struct HashTable_ {
HashTableBucket **array;
uint32_t array_size;
uint32_t seed; /**< optional random seed, to be used by the registered hash function. */
#ifdef UNITTESTS
uint32_t count;
#endif
@@ -47,6 +48,9 @@ typedef struct HashTable_ {
/* prototypes */
HashTable* HashTableInit(uint32_t, uint32_t (*Hash)(struct HashTable_ *, void *, uint16_t), char (*Compare)(void *, uint16_t, void *, uint16_t), void (*Free)(void *));
HashTable *HashTableInitWithSeed(uint32_t, uint32_t (*Hash)(struct HashTable_ *, void *, uint16_t),
char (*Compare)(void *, uint16_t, void *, uint16_t), void (*Free)(void *),
const uint32_t seed);
void HashTableFree(HashTable *);
int HashTableAdd(HashTable *, void *, uint16_t);
int HashTableRemove(HashTable *, void *, uint16_t);