| /* |
| * 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. |
| */ |
| |
| // modified by Dan Gibson on 05/20/05 to accomidate FASTER |
| // >32 set lengths, using an array of ints w/ 32 bits/int |
| |
| #ifndef __MEM_RUBY_COMMON_SET_HH__ |
| #define __MEM_RUBY_COMMON_SET_HH__ |
| |
| #include <iostream> |
| #include <limits> |
| |
| #include "mem/ruby/common/TypeDefines.hh" |
| |
| /* |
| * This defines the number of longs (32-bits on 32 bit machines, |
| * 64-bit on 64-bit AMD machines) to use to hold the set... |
| * the default is 4, allowing 128 or 256 different members |
| * of the set. |
| * |
| * This should never need to be changed for correctness reasons, |
| * though increasing it will increase performance for larger |
| * set sizes at the cost of a (much) larger memory footprint |
| * |
| */ |
| const int NUMBER_WORDS_PER_SET = 1; |
| |
| class Set |
| { |
| private: |
| int m_nSize; // the number of bits in this set |
| int m_nArrayLen; // the number of 32-bit words that are |
| // held in the array |
| |
| // Changed 5/24/05 for static allocation of array |
| // note that "long" corresponds to 32 bits on a 32-bit machine, |
| // 64 bits if the -m64 parameter is passed to g++, which it is |
| // for an AMD opteron under our configuration |
| |
| long *m_p_nArray; // an word array to hold the bits in the set |
| long m_p_nArray_Static[NUMBER_WORDS_PER_SET]; |
| |
| static const int LONG_BITS = std::numeric_limits<long>::digits + 1; |
| static const int INDEX_SHIFT = LONG_BITS == 64 ? 6 : 5; |
| static const int INDEX_MASK = (1 << INDEX_SHIFT) - 1; |
| |
| void clearExcess(); |
| |
| public: |
| Set(); |
| Set(int size); |
| Set(const Set& obj); |
| ~Set(); |
| |
| Set& operator=(const Set& obj); |
| |
| void |
| add(NodeID index) |
| { |
| m_p_nArray[index >> INDEX_SHIFT] |= |
| (((unsigned long) 1) << (index & INDEX_MASK)); |
| } |
| |
| void addSet(const Set& set); |
| void addRandom(); |
| |
| void |
| remove(NodeID index) |
| { |
| m_p_nArray[index >> INDEX_SHIFT] &= |
| ~(((unsigned long)1) << (index & INDEX_MASK)); |
| } |
| |
| void removeSet(const Set& set); |
| |
| void |
| clear() |
| { |
| for (int i = 0; i < m_nArrayLen; i++) |
| m_p_nArray[i] = 0; |
| } |
| |
| void broadcast(); |
| int count() const; |
| bool isEqual(const Set& set) const; |
| |
| // return the logical OR of this set and orSet |
| Set OR(const Set& orSet) const; |
| |
| // return the logical AND of this set and andSet |
| Set AND(const Set& andSet) const; |
| |
| // Returns true if the intersection of the two sets is empty |
| bool |
| intersectionIsEmpty(const Set& other_set) const |
| { |
| for (int i = 0; i < m_nArrayLen; i++) |
| if (m_p_nArray[i] & other_set.m_p_nArray[i]) |
| return false; |
| return true; |
| } |
| |
| bool isSuperset(const Set& test) const; |
| bool isSubset(const Set& test) const { return test.isSuperset(*this); } |
| |
| bool |
| isElement(NodeID element) const |
| { |
| return (m_p_nArray[element>>INDEX_SHIFT] & |
| (((unsigned long)1) << (element & INDEX_MASK))) != 0; |
| } |
| |
| bool isBroadcast() const; |
| bool isEmpty() const; |
| |
| NodeID smallestElement() const; |
| |
| void setSize(int size); |
| |
| NodeID |
| elementAt(int index) const |
| { |
| if (isElement(index)) |
| return (NodeID)true; |
| else |
| return 0; |
| } |
| |
| int getSize() const { return m_nSize; } |
| |
| void print(std::ostream& out) const; |
| }; |
| |
| inline std::ostream& |
| operator<<(std::ostream& out, const Set& obj) |
| { |
| obj.print(out); |
| out << std::flush; |
| return out; |
| } |
| |
| #endif // __MEM_RUBY_COMMON_SET_HH__ |