gem5 v24.0.0.0
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bulk_bloom_filter.hh
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1/*
2 * Copyright (c) 2019 Inria
3 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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28 */
29
30#ifndef __BASE_FILTERS_BULK_BLOOM_FILTER_HH__
31#define __BASE_FILTERS_BULK_BLOOM_FILTER_HH__
32
34
35namespace gem5
36{
37
38struct BloomFilterBulkParams;
39
40namespace bloom_filter
41{
42
48class Bulk : public MultiBitSel
49{
50 public:
51 Bulk(const BloomFilterBulkParams &p);
52 ~Bulk();
53
54 protected:
55 int hash(Addr addr, int hash_number) const override;
56
57 private:
59 Addr permute(Addr addr) const;
60
67 const int sectorBits;
68};
69
70} // namespace bloom_filter
71} // namespace gem5
72
73#endif // __BASE_FILTERS_BULK_BLOOM_FILTER_HH__
Implementation of the bloom filter, as described in "Bulk Disambiguation ofSpeculative Threads in Mul...
int hash(Addr addr, int hash_number) const override
Apply the selected the hash functions to an address.
Bulk(const BloomFilterBulkParams &p)
Addr permute(Addr addr) const
Permutes the address to generate its signature.
const int sectorBits
Number of bits used per sector.
The MultiBitSel Bloom Filter associates an address to multiple entries through the use of multiple ha...
Bitfield< 0 > p
Bitfield< 3 > addr
Definition types.hh:84
Copyright (c) 2024 - Pranith Kumar Copyright (c) 2020 Inria All rights reserved.
Definition binary32.hh:36
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition types.hh:147

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