diff options
Diffstat (limited to 'src/mem/ruby/system/LSB_CountingBloomFilter.cc')
-rw-r--r-- | src/mem/ruby/system/LSB_CountingBloomFilter.cc | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/mem/ruby/system/LSB_CountingBloomFilter.cc b/src/mem/ruby/system/LSB_CountingBloomFilter.cc new file mode 100644 index 000000000..ddfa97f5f --- /dev/null +++ b/src/mem/ruby/system/LSB_CountingBloomFilter.cc @@ -0,0 +1,141 @@ + +/* + * 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. + */ + +/* + * LSB_CountingBloomFilter.C + * + * Description: + * + * + */ + +#include "LSB_CountingBloomFilter.hh" +#include "Map.hh" +#include "Address.hh" + +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 +} + + +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( RubyConfig::dataBlockBits(), RubyConfig::dataBlockBits() + m_filter_size_bits - 1); +} + + |