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author | Nathan Binkert <nate@binkert.org> | 2009-07-06 15:49:47 -0700 |
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committer | Nathan Binkert <nate@binkert.org> | 2009-07-06 15:49:47 -0700 |
commit | 92de70b69aaf3f399a855057b556ed198139e5d8 (patch) | |
tree | f8e7d0d494df8810cc960be4c52d8b555471f157 /src/mem/ruby/system/PersistentArbiter.cc | |
parent | 05f6a4a6b92370162da17ef5cccb5a7e3ba508e5 (diff) | |
download | gem5-92de70b69aaf3f399a855057b556ed198139e5d8.tar.xz |
ruby: Import the latest ruby changes from gems.
This was done with an automated process, so there could be things that were
done in this tree in the past that didn't make it. One known regression
is that atomic memory operations do not seem to work properly anymore.
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; - -} |