Zabbix
Public
Source
xxxxxxxxxx/*** Copyright (C) 2001-2025 Zabbix SIA**** This program is free software: you can redistribute it and/or modify it under the terms of** the GNU Affero General Public License as published by the Free Software Foundation, version 3.**** This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;** without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.** See the GNU Affero General Public License for more details.**** You should have received a copy of the GNU Affero General Public License along with this program.** If not, see <https://www.gnu.org/licenses/>.**/typedef unsigned char uchar;/* * modified FNV hash function (see http://www.isthe.com/chongo/tech/comp/fnv/) */zbx_hash_t zbx_hash_modfnv(const void *data, size_t len, zbx_hash_t seed){ const uchar *p = (const uchar *)data; zbx_hash_t hash; hash = 2166136261u ^ seed; while (len-- >= 1) { hash = (hash ^ *(p++)) * 16777619u; } hash += hash << 13; hash ^= hash >> 7; hash += hash << 3; hash ^= hash >> 17; hash += hash << 5; return hash;}/* * see http://xoshiro.di.unimi.it/splitmix64.c */zbx_hash_t zbx_hash_splittable64(const void *data){ zbx_uint64_t value = *(const zbx_uint64_t *)data; value ^= value >> 30; value *= __UINT64_C(0xbf58476d1ce4e5b9); value ^= value >> 27; value *= __UINT64_C(0x94d049bb133111eb); value ^= value >> 31; return (zbx_hash_t)value ^ (value >> 32);}/* default hash functions */zbx_hash_t zbx_default_ptr_hash_func(const void *data){ return ZBX_DEFAULT_PTR_HASH_ALGO(data, ZBX_PTR_SIZE, ZBX_DEFAULT_HASH_SEED);}zbx_hash_t zbx_default_string_hash_func(const void *data){ return ZBX_DEFAULT_STRING_HASH_ALGO(data, strlen((const char *)data), ZBX_DEFAULT_HASH_SEED);}zbx_hash_t zbx_default_string_ptr_hash_func(const void *data){ return zbx_default_string_hash_func(*((const char * const *)data));}zbx_hash_t zbx_default_uint64_pair_hash_func(const void *data){ const zbx_uint64_pair_t *pair = (const zbx_uint64_pair_t *)data; zbx_hash_t hash; hash = ZBX_DEFAULT_UINT64_HASH_FUNC(&pair->first); hash = ZBX_DEFAULT_UINT64_HASH_ALGO(&pair->second, sizeof(pair->second), hash); return hash;}/* default comparison functions */