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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.
*/
/*
* $Id$
*
*/
#include "Tracer.hh"
#include "TraceRecord.hh"
#include "EventQueue.hh"
#include "PrioHeap.hh"
#include "System.hh"
Tracer::Tracer()
{
m_enabled = false;
}
Tracer::~Tracer()
{
}
void Tracer::startTrace(string filename)
{
if (m_enabled) {
stopTrace();
}
if (filename != "") {
m_trace_file.open(filename.c_str());
if (m_trace_file.fail()) {
cout << "Error: error opening file '" << filename << "'" << endl;
cout << "Trace not enabled." << endl;
return;
}
cout << "Request trace enabled to output file '" << filename << "'" << endl;
m_enabled = true;
}
}
void Tracer::stopTrace()
{
assert(m_enabled == true);
m_trace_file.close();
cout << "Request trace file closed." << endl;
m_enabled = false;
}
void Tracer::traceRequest(NodeID id, const Address& data_addr, const Address& pc_addr, CacheRequestType type, Time time)
{
assert(m_enabled == true);
TraceRecord tr(id, data_addr, pc_addr, type, time);
tr.output(m_trace_file);
}
// Class method
int Tracer::playbackTrace(string filename)
{
igzstream in(filename.c_str());
if (in.fail()) {
cout << "Error: error opening file '" << filename << "'" << endl;
return 0;
}
time_t start_time = time(NULL);
TraceRecord record;
int counter = 0;
// Read in the next TraceRecord
bool ok = record.input(in);
while (ok) {
// Put it in the right cache
record.issueRequest();
counter++;
// Read in the next TraceRecord
ok = record.input(in);
// Clear the statistics after warmup
if (counter == g_trace_warmup_length) {
cout << "Clearing stats after warmup of length " << g_trace_warmup_length << endl;
g_system_ptr->clearStats();
}
}
// Flush the prefetches through the system
g_eventQueue_ptr->triggerEvents(g_eventQueue_ptr->getTime() + 1000); // FIXME - should be smarter
time_t stop_time = time(NULL);
double seconds = difftime(stop_time, start_time);
double minutes = seconds / 60.0;
cout << "playbackTrace: " << minutes << " minutes" << endl;
return counter;
}
void Tracer::print(ostream& out) const
{
}
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