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/*
* 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.
*/
#include "mem/gems_common/Map.hh"
#include "mem/ruby/common/Address.hh"
#include "mem/ruby/filters/LSB_CountingBloomFilter.hh"
using namespace std;
LSB_CountingBloomFilter::LSB_CountingBloomFilter(string str)
{
string tail(str);
string head = string_split(tail, ':');
m_filter_size = atoi(head.c_str());
m_filter_size_bits = log_int(m_filter_size);
m_count = atoi(tail.c_str());
m_count_bits = log_int(m_count);
m_filter.setSize(m_filter_size);
clear();
}
LSB_CountingBloomFilter::~LSB_CountingBloomFilter()
{
}
void
LSB_CountingBloomFilter::clear()
{
for (int i = 0; i < m_filter_size; i++) {
m_filter[i] = 0;
}
}
void
LSB_CountingBloomFilter::increment(const Address& addr)
{
int i = get_index(addr);
if (m_filter[i] < m_count)
m_filter[i] += 1;
}
void
LSB_CountingBloomFilter::decrement(const Address& addr)
{
int i = get_index(addr);
if (m_filter[i] > 0)
m_filter[i] -= 1;
}
void
LSB_CountingBloomFilter::merge(AbstractBloomFilter * other_filter)
{
// TODO
}
void
LSB_CountingBloomFilter::set(const Address& addr)
{
// TODO
}
void
LSB_CountingBloomFilter::unset(const Address& addr)
{
// TODO
}
bool
LSB_CountingBloomFilter::isSet(const Address& addr)
{
// TODO
return false;
}
int
LSB_CountingBloomFilter::getCount(const Address& addr)
{
return m_filter[get_index(addr)];
}
int
LSB_CountingBloomFilter::getTotalCount()
{
int count = 0;
for (int i = 0; i < m_filter_size; i++) {
count += m_filter[i];
}
return count;
}
int
LSB_CountingBloomFilter::getIndex(const Address& addr)
{
return get_index(addr);
}
void
LSB_CountingBloomFilter::print(ostream& out) const
{
}
int
LSB_CountingBloomFilter::readBit(const int index)
{
return 0;
// TODO
}
void
LSB_CountingBloomFilter::writeBit(const int index, const int value)
{
// TODO
}
int
LSB_CountingBloomFilter::get_index(const Address& addr)
{
return addr.bitSelect(RubySystem::getBlockSizeBits(),
RubySystem::getBlockSizeBits() +
m_filter_size_bits - 1);
}
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