diff options
Diffstat (limited to 'src/mem/ruby/filters/MultiGrainBloomFilter.cc')
| -rw-r--r-- | src/mem/ruby/filters/MultiGrainBloomFilter.cc | 167 |
1 files changed, 90 insertions, 77 deletions
diff --git a/src/mem/ruby/filters/MultiGrainBloomFilter.cc b/src/mem/ruby/filters/MultiGrainBloomFilter.cc index 108168db3..543c4312a 100644 --- a/src/mem/ruby/filters/MultiGrainBloomFilter.cc +++ b/src/mem/ruby/filters/MultiGrainBloomFilter.cc @@ -1,4 +1,3 @@ - /* * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood * All rights reserved. @@ -27,142 +26,156 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -/* - * MultiGrainBloomFilter.cc - * - * Description: - * - * - */ - -#include "mem/ruby/filters/MultiGrainBloomFilter.hh" #include "mem/gems_common/Map.hh" #include "mem/ruby/common/Address.hh" +#include "mem/ruby/filters/MultiGrainBloomFilter.hh" MultiGrainBloomFilter::MultiGrainBloomFilter(string str) { - string tail(str); + string tail(str); - // split into the 2 filter sizes - string head = string_split(tail, '_'); + // split into the 2 filter sizes + string head = string_split(tail, '_'); - // head contains size of 1st bloom filter, tail contains size of 2nd bloom filter + // head contains size of 1st bloom filter, tail contains size of + // 2nd bloom filter - m_filter_size = atoi(head.c_str()); - m_filter_size_bits = log_int(m_filter_size); + m_filter_size = atoi(head.c_str()); + m_filter_size_bits = log_int(m_filter_size); - m_page_filter_size = atoi(tail.c_str()); - m_page_filter_size_bits = log_int(m_page_filter_size); + m_page_filter_size = atoi(tail.c_str()); + m_page_filter_size_bits = log_int(m_page_filter_size); - m_filter.setSize(m_filter_size); - m_page_filter.setSize(m_page_filter_size); - clear(); + m_filter.setSize(m_filter_size); + m_page_filter.setSize(m_page_filter_size); + clear(); } -MultiGrainBloomFilter::~MultiGrainBloomFilter(){ +MultiGrainBloomFilter::~MultiGrainBloomFilter() +{ } -void MultiGrainBloomFilter::clear() +void +MultiGrainBloomFilter::clear() { - for (int i = 0; i < m_filter_size; i++) { - m_filter[i] = 0; - } - for(int i=0; i < m_page_filter_size; ++i){ - m_page_filter[i] = 0; - } + for (int i = 0; i < m_filter_size; i++) { + m_filter[i] = 0; + } + for(int i=0; i < m_page_filter_size; ++i){ + m_page_filter[i] = 0; + } } -void MultiGrainBloomFilter::increment(const Address& addr) +void +MultiGrainBloomFilter::increment(const Address& addr) { - // Not used + // Not used } -void MultiGrainBloomFilter::decrement(const Address& addr) +void +MultiGrainBloomFilter::decrement(const Address& addr) { - // Not used + // Not used } -void MultiGrainBloomFilter::merge(AbstractBloomFilter * other_filter) +void +MultiGrainBloomFilter::merge(AbstractBloomFilter *other_filter) { - // TODO + // TODO } -void MultiGrainBloomFilter::set(const Address& addr) +void +MultiGrainBloomFilter::set(const Address& addr) { - int i = get_block_index(addr); - assert(i < m_filter_size); - assert(get_page_index(addr) < m_page_filter_size); - m_filter[i] = 1; - m_page_filter[i] = 1; + int i = get_block_index(addr); + assert(i < m_filter_size); + assert(get_page_index(addr) < m_page_filter_size); + m_filter[i] = 1; + m_page_filter[i] = 1; } -void MultiGrainBloomFilter::unset(const Address& addr) +void +MultiGrainBloomFilter::unset(const Address& addr) { - // not used + // not used } -bool MultiGrainBloomFilter::isSet(const Address& addr) +bool +MultiGrainBloomFilter::isSet(const Address& addr) { - int i = get_block_index(addr); - assert(i < m_filter_size); - assert(get_page_index(addr) < m_page_filter_size); - // we have to have both indices set - return (m_filter[i] && m_page_filter[i]); + int i = get_block_index(addr); + assert(i < m_filter_size); + assert(get_page_index(addr) < m_page_filter_size); + // we have to have both indices set + return (m_filter[i] && m_page_filter[i]); } -int MultiGrainBloomFilter::getCount(const Address& addr) +int +MultiGrainBloomFilter::getCount(const Address& addr) { - // not used - return 0; + // not used + return 0; } -int MultiGrainBloomFilter::getTotalCount() +int +MultiGrainBloomFilter::getTotalCount() { - int count = 0; + int count = 0; - for (int i = 0; i < m_filter_size; i++) { - count += m_filter[i]; - } + for (int i = 0; i < m_filter_size; i++) { + count += m_filter[i]; + } - for(int i=0; i < m_page_filter_size; ++i){ - count += m_page_filter[i] = 0; - } + for(int i=0; i < m_page_filter_size; ++i) { + count += m_page_filter[i] = 0; + } - return count; + return count; } -int MultiGrainBloomFilter::getIndex(const Address& addr) +int +MultiGrainBloomFilter::getIndex(const Address& addr) { - return 0; - // TODO + return 0; + // TODO } -int MultiGrainBloomFilter::readBit(const int index) { - return 0; - // TODO +int +MultiGrainBloomFilter::readBit(const int index) +{ + return 0; + // TODO } -void MultiGrainBloomFilter::writeBit(const int index, const int value) { - // TODO +void +MultiGrainBloomFilter::writeBit(const int index, const int value) +{ + // TODO } -void MultiGrainBloomFilter::print(ostream& out) const +void +MultiGrainBloomFilter::print(ostream& out) const { } -int MultiGrainBloomFilter::get_block_index(const Address& addr) +int +MultiGrainBloomFilter::get_block_index(const Address& addr) { - // grap a chunk of bits after byte offset - return addr.bitSelect( RubySystem::getBlockSizeBits(), RubySystem::getBlockSizeBits() + m_filter_size_bits - 1); + // grap a chunk of bits after byte offset + return addr.bitSelect(RubySystem::getBlockSizeBits(), + RubySystem::getBlockSizeBits() + + m_filter_size_bits - 1); } -int MultiGrainBloomFilter::get_page_index(const Address & addr) +int +MultiGrainBloomFilter::get_page_index(const Address & addr) { - // grap a chunk of bits after first chunk - return addr.bitSelect( RubySystem::getBlockSizeBits() + m_filter_size_bits - 1, - RubySystem::getBlockSizeBits() + m_filter_size_bits - 1 + m_page_filter_size_bits - 1); + int bits = RubySystem::getBlockSizeBits() + m_filter_size_bits - 1; + + // grap a chunk of bits after first chunk + return addr.bitSelect(bits, bits + m_page_filter_size_bits - 1); } |