diff options
Diffstat (limited to 'src/mem/ruby/common/Set.cc')
| -rw-r--r-- | src/mem/ruby/common/Set.cc | 651 |
1 files changed, 218 insertions, 433 deletions
diff --git a/src/mem/ruby/common/Set.cc b/src/mem/ruby/common/Set.cc index a9ced0078..c946fec16 100644 --- a/src/mem/ruby/common/Set.cc +++ b/src/mem/ruby/common/Set.cc @@ -1,4 +1,3 @@ - /* * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood * All rights reserved. @@ -27,554 +26,340 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -/* - * Set.cc - * - * Description: See Set.hh - * - * $Id: BigSet.cc 1.9 05/01/19 13:12:25-06:00 mikem@maya.cs.wisc.edu $ - * - */ - -// modified (rewritten) 05/20/05 by Dan Gibson to accomimdate FASTER >32 bit -// set sizes +// modified (rewritten) 05/20/05 by Dan Gibson to accomimdate FASTER +// >32 bit set sizes #include "mem/ruby/common/Set.hh" #include "mem/ruby/system/System.hh" -#if __amd64__ || __LP64__ -#define __64BITS__ -#else -#define __32BITS__ -#endif - Set::Set() { - m_p_nArray = NULL; - m_nArrayLen = 0; - m_nSize = 0; + m_p_nArray = NULL; + m_nArrayLen = 0; + m_nSize = 0; } -// copy constructor -Set::Set(const Set& obj) { - m_p_nArray = NULL; - setSize(obj.m_nSize); - - // copy from the host to this array - for(int i=0; i<m_nArrayLen; i++) { - m_p_nArray[i] = obj.m_p_nArray[i]; - } +Set::Set(const Set& obj) +{ + m_p_nArray = NULL; + setSize(obj.m_nSize); + // copy from the host to this array + for (int i = 0; i < m_nArrayLen; i++) + m_p_nArray[i] = obj.m_p_nArray[i]; } Set::Set(int size) { - m_p_nArray = NULL; - m_nArrayLen = 0; - m_nSize = 0; - if(size > 0) { - setSize(size); - } + m_p_nArray = NULL; + m_nArrayLen = 0; + m_nSize = 0; + if (size > 0) + setSize(size); } -Set::~Set() { - if( (m_p_nArray != (&m_p_nArray_Static[0])) && (m_p_nArray != NULL)) - delete [] m_p_nArray; - m_p_nArray = NULL; +Set::~Set() +{ + if (m_p_nArray && m_p_nArray != &m_p_nArray_Static[0]) + delete [] m_p_nArray; + m_p_nArray = NULL; } +void +Set::clearExcess() +{ + // now just ensure that no bits over the maximum size were set +#ifdef _LP64 + long mask = 0x7FFFFFFFFFFFFFFF; +#else + long mask = 0x7FFFFFFF; +#endif -// /* -// * This function should set the bit corresponding to index -// * to 1. -// */ - -// void Set::add(NodeID index) -// { -// assert(index<m_nSize && index >= 0); - -// #ifdef __32BITS__ -// m_p_nArray[index>>5] |= (1 << (index & 0x01F)); -// #else -// m_p_nArray[index>>6] |= (((unsigned long) 1) << (index & 0x03F)); -// #endif // __32BITS__ + // the number of populated spaces in the higest-order array slot + // is: m_nSize % LONG_BITS, so the uppermost LONG_BITS - + // m_nSize%64 bits should be cleared + if ((m_nSize % LONG_BITS) != 0) { + for (int j = 0; j < 64 - (m_nSize & INDEX_MASK); j++) { + m_p_nArray[m_nArrayLen - 1] &= mask; + mask = mask >> 1; + } + } +} -// } /* - * This function should set all the bits in the current set - * that are already set in the parameter set + * This function should set all the bits in the current set that are + * already set in the parameter set */ -void Set::addSet(const Set& set) +void +Set::addSet(const Set& set) { - assert(getSize()==set.getSize()); - for(int i=0; i<m_nArrayLen; i++) { - m_p_nArray[i] |= set.m_p_nArray[i]; - } - + assert(getSize()==set.getSize()); + for (int i = 0; i < m_nArrayLen; i++) + m_p_nArray[i] |= set.m_p_nArray[i]; } /* - * This function should randomly assign 1 to the bits in the set-- - * it should not clear the bits bits first, though? + * This function should randomly assign 1 to the bits in the set--it + * should not clear the bits bits first, though? */ -void Set::addRandom() +void +Set::addRandom() { - for(int i=0; i<m_nArrayLen; i++) { - m_p_nArray[i] |= random() ^ (random() << 4); // this ensures that all 32 bits are subject to random effects, - // as RAND_MAX typically = 0x7FFFFFFF - } - - // now just ensure that no bits over the maximum size were set -#ifdef __32BITS__ - long mask = 0x7FFFFFFF; - - // the number of populated spaces in the higest-order array slot is: - // m_nSize % 32, so the uppermost 32 - m_nSize%32 bits should be - // cleared - - if((m_nSize % 32) != 0) { - for(int j=0; j<32-(m_nSize&0x01F); j++) { - m_p_nArray[m_nArrayLen-1] &= mask; - mask = mask >> 1; - } - } -#else - long mask = 0x7FFFFFFFFFFFFFFF; - - // the number of populated spaces in the higest-order array slot is: - // m_nSize % 64, so the uppermost 64 - m_nSize%64 bits should be - // cleared - - if((m_nSize % 64) != 0) { - for(int j=0; j<64-(m_nSize&0x03F); j++) { - m_p_nArray[m_nArrayLen-1] &= mask; - mask = mask >> 1; + for (int i = 0; i < m_nArrayLen; i++) { + // this ensures that all 32 bits are subject to random effects, + // as RAND_MAX typically = 0x7FFFFFFF + m_p_nArray[i] |= random() ^ (random() << 4); } - } -#endif // __32BITS__ - + clearExcess(); } -// /* -// * This function unsets the bit associated with index -// */ -// void Set::remove(NodeID index) -// { -// assert(index<m_nSize && index>=0); - -// #ifdef __32BITS__ -// m_p_nArray[index>>5] &= ~(0x00000001 << (index & 0x01F)); -// #else -// m_p_nArray[index>>6] &= ~(((unsigned long) 0x0000000000000001) << (index & 0x03F)); -// #endif // __32BITS__ - -// } - - /* * This function clears bits that are =1 in the parameter set */ -void Set::removeSet(const Set& set) +void +Set::removeSet(const Set& set) { - - assert(m_nSize==set.m_nSize); - for(int i=0; i<m_nArrayLen; i++) { - m_p_nArray[i] &= ~(set.m_p_nArray[i]); - } - + assert(m_nSize == set.m_nSize); + for (int i = 0; i < m_nArrayLen; i++) + m_p_nArray[i] &= ~set.m_p_nArray[i]; } -// /* -// * This function clears all bits in the set -// */ -// void Set::clear() -// { -// for(int i=0; i<m_nArrayLen; i++) { -// m_p_nArray[i] = 0; -// } -// } - /* * this function sets all bits in the set */ -void Set::broadcast() +void +Set::broadcast() { + for (int i = 0; i < m_nArrayLen; i++) + m_p_nArray[i] = -1; // note that -1 corresponds to all 1's in 2's comp. - for(int i=0; i<m_nArrayLen; i++) { - m_p_nArray[i] = -1; // note that -1 corresponds to all 1's in 2's comp. - } - - // now just ensure that no bits over the maximum size were set -#ifdef __32BITS__ - long mask = 0x7FFFFFFF; - - // the number of populated spaces in the higest-order array slot is: - // m_nSize % 32, so the uppermost 32 - m_nSize%32 bits should be - // cleared - - if((m_nSize % 32) != 0) { - for(int j=0; j<32-(m_nSize&0x01F); j++) { - m_p_nArray[m_nArrayLen-1] &= mask; - mask = mask >> 1; - } - } -#else - long mask = 0x7FFFFFFFFFFFFFFF; - - // the number of populated spaces in the higest-order array slot is: - // m_nSize % 64, so the uppermost 64 - m_nSize%64 bits should be - // cleared - - if((m_nSize % 64) != 0) { - for(int j=0; j<64-(m_nSize&0x03F); j++) { - m_p_nArray[m_nArrayLen-1] &= mask; - mask = mask >> 1; - } - } -#endif // __32BITS__ - + clearExcess(); } /* * This function returns the population count of 1's in the set */ -int Set::count() const +int +Set::count() const { - int counter = 0; - long mask; - for( int i=0; i<m_nArrayLen; i++) { - mask = (long) 0x01; - -#ifdef __32BITS__ - for( int j=0; j<32; j++) { - if(m_p_nArray[i] & mask) counter++; - mask = mask << 1; - } - -#else - - for( int j=0; j<64; j++) { // FIXME - significant performance loss when array population << 64 - if((m_p_nArray[i] & mask) != 0) { - counter++; - } - mask = mask << 1; + int counter = 0; + long mask; + + for (int i = 0; i < m_nArrayLen; i++) { + mask = (long)0x01; + + for (int j = 0; j < LONG_BITS; j++) { + // FIXME - significant performance loss when array + // population << LONG_BITS + if ((m_p_nArray[i] & mask) != 0) { + counter++; + } + mask = mask << 1; + } } -#endif // __32BITS__ - - } - - return counter; + return counter; } /* * This function checks for set equality */ - -bool Set::isEqual(const Set& set) const +bool +Set::isEqual(const Set& set) const { - assert(m_nSize==set.m_nSize); + assert(m_nSize == set.m_nSize); - for(int i=0;i<m_nArrayLen;i++) { - if(m_p_nArray[i] != set.m_p_nArray[i]) { - return false; - } - } + for (int i = 0; i < m_nArrayLen; i++) + if (m_p_nArray[i] != set.m_p_nArray[i]) + return false; - return true; + return true; } /* - * This function returns the NodeID (int) of the - * least set bit + * This function returns the NodeID (int) of the least set bit */ -NodeID Set::smallestElement() const +NodeID +Set::smallestElement() const { - assert(count() > 0); - long x; - for( int i=0; i<m_nArrayLen; i++) { - if(m_p_nArray[i]!=0) { - // the least-set bit must be in here - x = m_p_nArray[i]; - -#ifdef __32BITS__ - for( int j=0; j<32; j++) { - if(x & 0x00000001) { - return 32*i+j; + assert(count() > 0); + long x; + for (int i = 0; i < m_nArrayLen; i++) { + if (m_p_nArray[i] != 0) { + // the least-set bit must be in here + x = m_p_nArray[i]; + + for (int j = 0; j < LONG_BITS; j++) { + if (x & (unsigned long)1) { + return LONG_BITS * i + j; + } + + x = x >> 1; + } + + ERROR_MSG("No smallest element of an empty set."); } - - x = x >> 1; - } -#else - for( int j=0; j<64; j++) { - if(x & 0x0000000000000001) { - return 64*i+j; - } - - x = x >> 1; - } -#endif // __32BITS__ - - ERROR_MSG("No smallest element of an empty set."); } - } - ERROR_MSG("No smallest element of an empty set."); + ERROR_MSG("No smallest element of an empty set."); - return 0; + return 0; } /* * this function returns true iff all bits are set */ -bool Set::isBroadcast() const +bool +Set::isBroadcast() const { - // check the fully-loaded words by equal to 0xffffffff - // only the last word may not be fully loaded, it is not - // fully loaded iff m_nSize % 32 or 64 !=0 => fully loaded iff - // m_nSize % 32 or 64 == 0 - -#ifdef __32BITS__ - for(int i=0; i< (((m_nSize % 32)==0) ? m_nArrayLen : m_nArrayLen-1); i++) { - if(m_p_nArray[i]!=-1) { - return false; - } - } - - // now check the last word, which may not be fully loaded - long mask = 1; - for(int j=0; j< (m_nSize % 32); j++) { - if((mask & m_p_nArray[m_nArrayLen-1])==0) { - return false; - } - mask = mask << 1; - } -#else - for(int i=0; i< (((m_nSize % 64)==0) ? m_nArrayLen : m_nArrayLen-1); i++) { - if(m_p_nArray[i]!=-1) { - return false; + // check the fully-loaded words by equal to 0xffffffff + // only the last word may not be fully loaded, it is not + // fully loaded iff m_nSize % 32 or 64 !=0 => fully loaded iff + // m_nSize % 32 or 64 == 0 + + int max = (m_nSize % LONG_BITS) == 0 ? m_nArrayLen : m_nArrayLen - 1; + for (int i = 0; i < max; i++) { + if (m_p_nArray[i] != -1) { + return false; + } } - } - // now check the last word, which may not be fully loaded - long mask = 1; - for(int j=0; j< (m_nSize % 64); j++) { - if((mask & m_p_nArray[m_nArrayLen-1])==0) { - return false; + // now check the last word, which may not be fully loaded + long mask = 1; + for (int j = 0; j < (m_nSize % LONG_BITS); j++) { + if ((mask & m_p_nArray[m_nArrayLen-1]) == 0) { + return false; + } + mask = mask << 1; } - mask = mask << 1; - } -#endif // __32BITS__ - - return true; + return true; } /* * this function returns true iff no bits are set */ -bool Set::isEmpty() const +bool +Set::isEmpty() const { - - // here we can simply check if all = 0, since we ensure - // that "extra slots" are all zero - for(int i=0; i< m_nArrayLen ; i++) { - if(m_p_nArray[i]!=0) { + // here we can simply check if all = 0, since we ensure + // that "extra slots" are all zero + for (int i = 0; i < m_nArrayLen ; i++) + if (m_p_nArray[i]) return false; - } - } - return true; + return true; } // returns the logical OR of "this" set and orSet -Set Set::OR(const Set& orSet) const +Set +Set::OR(const Set& orSet) const { - Set result(m_nSize); - assert(m_nSize == orSet.m_nSize); - for(int i=0; i< m_nArrayLen; i++) { - result.m_p_nArray[i] = m_p_nArray[i] | orSet.m_p_nArray[i]; - } - - return result; + Set result(m_nSize); + assert(m_nSize == orSet.m_nSize); + for (int i = 0; i < m_nArrayLen; i++) + result.m_p_nArray[i] = m_p_nArray[i] | orSet.m_p_nArray[i]; + return result; } // returns the logical AND of "this" set and andSet -Set Set::AND(const Set& andSet) const +Set +Set::AND(const Set& andSet) const { - Set result(m_nSize); - assert(m_nSize == andSet.m_nSize); + Set result(m_nSize); + assert(m_nSize == andSet.m_nSize); - for(int i=0; i< m_nArrayLen; i++) { - result.m_p_nArray[i] = m_p_nArray[i] & andSet.m_p_nArray[i]; - } + for (int i = 0; i < m_nArrayLen; i++) { + result.m_p_nArray[i] = m_p_nArray[i] & andSet.m_p_nArray[i]; + } - return result; + return result; } -// // Returns true if the intersection of the two sets is non-empty -// bool Set::intersectionIsNotEmpty(const Set& other_set) const -// { -// assert(m_nSize == other_set.m_nSize); -// for(int i=0; i< m_nArrayLen; i++) { -// if(m_p_nArray[i] & other_set.m_p_nArray[i]) { -// return true; -// } -// } - -// return false; - -// } - -// // Returns true if the intersection of the two sets is empty -// bool Set::intersectionIsEmpty(const Set& other_set) const -// { -// assert(m_nSize == other_set.m_nSize); -// for(int i=0; i< m_nArrayLen; i++) { -// if(m_p_nArray[i] & other_set.m_p_nArray[i]) { -// return false; -// } -// } - -// return true; - -// } - /* - * Returns false if a bit is set in the parameter set that is - * NOT set in this set + * Returns false if a bit is set in the parameter set that is NOT set + * in this set */ -bool Set::isSuperset(const Set& test) const +bool +Set::isSuperset(const Set& test) const { - assert(m_nSize == test.m_nSize); + assert(m_nSize == test.m_nSize); - for(int i=0;i<m_nArrayLen;i++) { - if(((test.m_p_nArray[i] & m_p_nArray[i]) | ~test.m_p_nArray[i]) != -1) { - return false; - } - } + for (int i = 0; i < m_nArrayLen; i++) + if (((test.m_p_nArray[i] & m_p_nArray[i]) | ~test.m_p_nArray[i]) != -1) + return false; - return true; + return true; } -// /* -// * Returns true iff this bit is set -// */ -// bool Set::isElement(NodeID element) const -// { -// bool result; - -// #ifdef __32BITS__ -// result = ((m_p_nArray[element>>5] & (0x00000001 << (element & 0x01F)))!=0); -// #else -// result = ((m_p_nArray[element>>6] & (((unsigned long) 0x0000000000000001) << (element & 0x03F)))!=0); -// #endif // __32BITS__ - -// return result; -// } - -/* - * "Supposed" to return the node id of the (n+1)th set - * bit, IE n=0 => returns nodeid of first set bit, BUT - * since BigSet.cc behaves strangely, this implementation - * will behave strangely just for reverse compatability. - * - * Was originally implemented for the flight data recorder - * FDR - */ - -// NodeID Set::elementAt(int n) const -// { -// if(isElement(n)) return (NodeID) true; -// else return 0; - -// /* -// int match = -1; -// for(int i=0;i<m_nSize;i++) { -// if(isElement(i)) match++; -// if(match==n) { -// return i; -// } -// } - -// return -1; -// */ -// } - -void Set::setSize(int size) +void +Set::setSize(int size) { - m_nSize = size; - -#ifdef __32BITS__ - m_nArrayLen = m_nSize/32 + ((m_nSize%32==0) ? 0 : 1 ); -#else - m_nArrayLen = m_nSize/64 + ((m_nSize%64==0) ? 0 : 1 ); -#endif // __32BITS__ - - // decide whether to use dynamic or static alloction - if(m_nArrayLen<=NUMBER_WORDS_PER_SET) { // constant defined in RubySystem.hh - // its OK to use the static allocation, and it will - // probably be faster (as m_nArrayLen is already in the - // cache and they will probably share the same cache line) - - // if switching from dyanamic to static allocation (which - // is probably rare, but why not be complete?), must delete - // the dynamically allocated space - if((m_p_nArray != NULL) && (m_p_nArray != &m_p_nArray_Static[0])) - delete [] m_p_nArray; - - m_p_nArray = & m_p_nArray_Static[0]; - } else { - - // can't use static allocation...simply not enough room - // so dynamically allocate some space - if((m_p_nArray != NULL) && (m_p_nArray != &m_p_nArray_Static[0])) - delete [] m_p_nArray; - - m_p_nArray = new long[m_nArrayLen]; - } + m_nSize = size; + + m_nArrayLen = m_nSize / LONG_BITS + ((m_nSize % LONG_BITS == 0) ? 0 : 1 ); + + // decide whether to use dynamic or static alloction + if (m_nArrayLen <= NUMBER_WORDS_PER_SET) { + // constant defined in RubySystem.hh + // its OK to use the static allocation, and it will + // probably be faster (as m_nArrayLen is already in the + // cache and they will probably share the same cache line) + + // if switching from dyanamic to static allocation (which + // is probably rare, but why not be complete?), must delete + // the dynamically allocated space + if (m_p_nArray && m_p_nArray != &m_p_nArray_Static[0]) + delete [] m_p_nArray; + + m_p_nArray = &m_p_nArray_Static[0]; + } else { + // can't use static allocation...simply not enough room + // so dynamically allocate some space + if (m_p_nArray && m_p_nArray != &m_p_nArray_Static[0]) + delete [] m_p_nArray; + + m_p_nArray = new long[m_nArrayLen]; + } - clear(); + clear(); } -Set& Set::operator=(const Set& obj) { - if(this == &obj) { - // do nothing - } else { - - // resize this item - setSize(obj.getSize()); +Set& +Set::operator=(const Set& obj) +{ + if (this != &obj) { + // resize this item + setSize(obj.getSize()); - // copy the elements from obj to this - for(int i=0; i<m_nArrayLen; i++) { - m_p_nArray[i] = obj.m_p_nArray[i]; + // copy the elements from obj to this + for (int i = 0; i < m_nArrayLen; i++) + m_p_nArray[i] = obj.m_p_nArray[i]; } - } - return *this; + return *this; } -void Set::print(std::ostream& out) const +void +Set::print(std::ostream& out) const { - if(m_p_nArray==NULL) { - out << "[Set {Empty}]"; - return; - } - char buff[24]; - out << "[Set (" << m_nSize << ") 0x "; - for (int i=m_nArrayLen-1; i>=0; i--) { -#ifdef __32BITS__ - sprintf(buff,"%08X ",m_p_nArray[i]); + if (!m_p_nArray) { + out << "[Set {Empty}]"; + return; + } + + char buff[24]; + out << "[Set (" << m_nSize << ") 0x "; + for (int i = m_nArrayLen - 1; i >= 0; i--) { +#ifdef _LP64 + sprintf(buff,"0x %016llX ", (long long)m_p_nArray[i]); #else - sprintf(buff,"0x %016llX ", (long long)m_p_nArray[i]); + sprintf(buff,"%08X ", m_p_nArray[i]); #endif // __32BITS__ - out << buff; - } - out << " ]"; - + out << buff; + } + out << " ]"; } - - |