blob: 1f652b2a4dd5084159783c6f034d3b2c3a9cb027 [file] [log] [blame]
/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* 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;
* neither the name of the copyright holders 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
* OWNER 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 __MEM_RUBY_FILTERS_MULTIBITSELBLOOMFILTER_HH__
#define __MEM_RUBY_FILTERS_MULTIBITSELBLOOMFILTER_HH__
#include <iostream>
#include <vector>
#include "mem/ruby/common/Address.hh"
#include "mem/ruby/common/TypeDefines.hh"
#include "mem/ruby/filters/AbstractBloomFilter.hh"
class MultiBitSelBloomFilter : public AbstractBloomFilter
{
public:
MultiBitSelBloomFilter(std::size_t filter_size, int num_hashes,
int skip_bits, bool is_parallel);
~MultiBitSelBloomFilter();
void clear();
void merge(AbstractBloomFilter * other_filter);
void set(Addr addr);
bool isSet(Addr addr);
int getCount(Addr addr);
int getTotalCount();
void print(std::ostream& out) const;
int getIndex(Addr addr);
int readBit(const int index);
void writeBit(const int index, const int value);
int
operator[](const int index) const
{
return this->m_filter[index];
}
private:
int get_index(Addr addr, int hashNumber);
int hash_bitsel(uint64_t value, int index, int jump, int maxBits,
int numBits);
std::vector<int> m_filter;
int m_filter_size;
int m_num_hashes;
int m_filter_size_bits;
// Bit offset from block number
int m_skip_bits;
int m_par_filter_size;
int m_par_filter_size_bits;
bool isParallel;
};
#endif // __MEM_RUBY_FILTERS_MULTIBITSELBLOOMFILTER_HH__