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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2022-2023. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#ifndef ERL_TERM_HASHING_H__
#define ERL_TERM_HASHING_H__
#include "sys.h"
#include "erl_drv_nif.h"
#if (defined(__aarch64__) && defined(__ARM_FEATURE_CRC32)) || \
(defined(__x86_64__) && defined(__SSE4_2__))
# define ERL_INTERNAL_HASH_CRC32C
#endif
typedef struct {
Uint32 a,b,c;
} ErtsBlockHashHelperCtx;
typedef struct {
ErtsBlockHashHelperCtx hctx;
const byte *ptr;
Uint len;
Uint tot_len;
} ErtsBlockHashState;
typedef struct {
ErtsBlockHashHelperCtx hctx;
SysIOVec* iov;
Uint vlen;
Uint tot_len;
int vix;
int ix;
} ErtsIovBlockHashState;
Uint32 make_hash2(Eterm);
Uint32 trapping_make_hash2(Eterm, Eterm*, struct process*);
Uint32 make_hash(Eterm);
Uint32 make_internal_hash(Eterm, Uint32 salt);
#ifdef DEBUG
# define DBG_HASHMAP_COLLISION_BONANZA
#endif
#ifdef DBG_HASHMAP_COLLISION_BONANZA
Uint32 erts_dbg_hashmap_collision_bonanza(Uint32 hash, Eterm key);
#endif
Uint32 make_map_hash(Eterm key);
void erts_block_hash_init(ErtsBlockHashState *state,
const byte *ptr,
Uint len,
Uint32 initval);
int erts_block_hash(Uint32 *hashp,
Uint *sizep,
ErtsBlockHashState *state);
void erts_iov_block_hash_init(ErtsIovBlockHashState *state,
SysIOVec *iov,
Uint vlen,
Uint32 initval);
int erts_iov_block_hash(Uint32 *hashp,
Uint *sizep,
ErtsIovBlockHashState *state);
#endif
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