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/*
* 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 <cassert>
#include "mem/ruby/common/Global.hh"
#include "mem/ruby/tester/Tester_Globals.hh"
#include "mem/ruby/tester/RaceyDriver.hh"
#include "mem/ruby/eventqueue/RubyEventQueue.hh"
#include "mem/ruby/tester/RaceyPseudoThread.hh"
RaceyDriver::RaceyDriver(int num_procs, int tester_length)
{
m_finish_time = 0;
m_done_counter = 0;
m_wakeup_thread0 = false;
m_num_procs = num_procs;
m_tester_length = tester_length;
eventQueue = new RubyEventQueue;
// racey at least need two processors
assert(m_num_procs >= 2);
// init all racey pseudo threads
m_racey_pseudo_threads.resize(m_num_procs);
for (int i=0; i<m_racey_pseudo_threads.size(); i++) {
m_racey_pseudo_threads[i] = new RaceyPseudoThread(i, *this);
}
// add this driver to the global event queue, for deadlock detection
eventQueue->scheduleEvent(this, g_DEADLOCK_THRESHOLD);
}
RaceyDriver::~RaceyDriver()
{
for (int i=0; i<m_racey_pseudo_threads.size(); i++) {
delete m_racey_pseudo_threads[i];
}
}
void RaceyDriver::go() {
// tick both queues until everyone is done
while (m_done_counter != m_num_procs) {
libruby_tick(1);
eventQueue->triggerEvents(eventQueue->getTime() + 1);
}
}
void RaceyDriver::hitCallback(int64_t request_id)
{
assert(requests.find(request_id) != requests.end());
int proc = requests[request_id].first;
Address address = requests[request_id].second.address;
uint8_t * data = new uint8_t[4];
for (int i = 0; i < 4; i++) {
data[i] = requests[request_id].second.data[i];
}
requests[request_id].second.data;
m_racey_pseudo_threads[proc]->performCallback(proc, address, data);
requests.erase(request_id);
}
integer_t RaceyDriver::getInstructionCount(int procID) const
{
// return m_racey_pseudo_threads[procID]->getInstructionCounter();
assert(0);
}
int RaceyDriver::runningThreads()
{
return m_num_procs - m_done_counter;
}
// used to wake up thread 0 whenever other thread finishes
void RaceyDriver::registerThread0Wakeup()
{
m_wakeup_thread0 = true;
}
void RaceyDriver::joinThread()
{
m_done_counter++;
if (m_done_counter == m_num_procs) {
m_finish_time = eventQueue->getTime();
}
if(m_wakeup_thread0) {
eventQueue->scheduleEvent(m_racey_pseudo_threads[0], 1);
m_wakeup_thread0 = false;
}
}
void RaceyDriver::wakeup()
{
// check for deadlock
for(int i = 0 ; i < m_racey_pseudo_threads.size(); i++) {
m_racey_pseudo_threads[i]->checkForDeadlock();
}
// schedule next wakeup
if (m_done_counter < m_num_procs) {
eventQueue->scheduleEvent(this, g_DEADLOCK_THRESHOLD);
}
}
void RaceyDriver::printStats(ostream& out) const
{
assert(m_done_counter == m_num_procs);
out << endl;
out << "RaceyDriver Stats" << endl;
out << "---------------------" << endl;
out << "execution signature: " << m_racey_pseudo_threads[0]->getSignature() << endl;
out << "finish_time: " << m_finish_time << endl;
}
void RaceyDriver::print(ostream& out) const
{
}
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