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Diffstat (limited to 'src/mem/ruby/system/PersistentArbiter.cc')
-rw-r--r-- | src/mem/ruby/system/PersistentArbiter.cc | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/src/mem/ruby/system/PersistentArbiter.cc b/src/mem/ruby/system/PersistentArbiter.cc deleted file mode 100644 index b44393301..000000000 --- a/src/mem/ruby/system/PersistentArbiter.cc +++ /dev/null @@ -1,165 +0,0 @@ - -/* - * 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/ruby/system/PersistentArbiter.hh" -#include "mem/ruby/common/Address.hh" -#include "mem/ruby/slicc_interface/AbstractChip.hh" -#include "mem/gems_common/util.hh" - -PersistentArbiter::PersistentArbiter(AbstractChip* chip_ptr) -{ - m_chip_ptr = chip_ptr; - - // wastes entries, but who cares - m_entries.setSize(RubyConfig::numberOfProcessors()); - - for (int i = 0; i < m_entries.size(); i++) { - m_entries[i].valid = false; - } - - m_busy = false; - m_locker = -1; - -} - -PersistentArbiter::~PersistentArbiter() -{ - m_chip_ptr = NULL; -} - - -void PersistentArbiter::addLocker(NodeID id, Address addr, AccessType type) { - //cout << "Arbiter " << getArbiterId() << " adding locker " << id << " " << addr << endl; - assert(m_entries[id].valid == false); - m_entries[id].valid = true; - m_entries[id].address = addr; - m_entries[id].type = type; - m_entries[id].localId = id; - -} - -void PersistentArbiter::removeLocker(NodeID id) { - //cout << "Arbiter " << getArbiterId() << " removing locker " << id << " " << m_entries[id].address << endl; - assert(m_entries[id].valid == true); - m_entries[id].valid = false; - - if (!lockersExist()) { - m_busy = false; - } -} - -bool PersistentArbiter::successorRequestPresent(Address addr, NodeID id) { - for (int i = (id + 1); i < m_entries.size(); i++) { - if (m_entries[i].address == addr && m_entries[i].valid) { - //cout << "m_entries[" << id << ", address " << m_entries[id].address << " is equal to " << addr << endl; - return true; - } - } - return false; -} - -bool PersistentArbiter::lockersExist() { - for (int i = 0; i < m_entries.size(); i++) { - if (m_entries[i].valid == true) { - return true; - } - } - //cout << "no lockers found" << endl; - return false; -} - -void PersistentArbiter::advanceActiveLock() { - assert(lockersExist()); - - //cout << "arbiter advancing lock from " << m_locker; - m_busy = false; - - if (m_locker < (m_entries.size() - 1)) { - for (int i = (m_locker+1); i < m_entries.size(); i++) { - if (m_entries[i].valid == true) { - m_locker = i; - m_busy = true; - //cout << " to " << m_locker << endl; - return; - } - } - } - - if (!m_busy) { - for (int i = 0; i < m_entries.size(); i++) { - if (m_entries[i].valid == true) { - m_locker = i; - m_busy = true; - //cout << " to " << m_locker << endl; - return; - } - } - - assert(m_busy) - } -} - -Address PersistentArbiter::getActiveLockAddress() { - assert( m_entries[m_locker].valid = true ); - return m_entries[m_locker].address; -} - - -NodeID PersistentArbiter::getArbiterId() { - return m_chip_ptr->getID()*RubyConfig::numberOfProcsPerChip(); -} - -bool PersistentArbiter::isBusy() { - return m_busy; -} - -NodeID PersistentArbiter::getActiveLocalId() { - assert( m_entries[m_locker].valid = true ); - return m_entries[m_locker].localId; -} - -void PersistentArbiter::setIssuedAddress(Address addr) { - m_issued_address = addr; -} - -bool PersistentArbiter::isIssuedAddress(Address addr) { - return (m_issued_address == addr); -} - -void PersistentArbiter::print(ostream& out) const { - - out << "["; - for (int i = 0; i < m_entries.size(); i++) { - if (m_entries[i].valid == true) { - out << "( " << m_entries[i].localId << ", " << m_entries[i].address << ") "; - } - } - out << "]" << endl; - -} |