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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 "base/cprintf.hh"
#include "mem/ruby/eventqueue/RubyEventQueue.hh"
#include "mem/ruby/recorder/TraceRecord.hh"
#include "mem/ruby/recorder/Tracer.hh"
#include "mem/ruby/system/System.hh"
using namespace std;
Tracer::Tracer(const Params *p)
: SimObject(p)
{
m_enabled = false;
m_warmup_length = p->warmup_length;
assert(m_warmup_length > 0);
p->ruby_system->registerTracer(this);
}
void
Tracer::startTrace(string filename)
{
if (m_enabled)
stopTrace();
if (filename != "") {
m_trace_file.open(filename.c_str());
if (m_trace_file.fail()) {
cprintf("Error: error opening file '%s'\n", filename);
cprintf("Trace not enabled.\n");
return;
}
cprintf("Request trace enabled to output file '%s'\n", filename);
m_enabled = true;
}
}
void
Tracer::stopTrace()
{
if (m_enabled) {
m_trace_file.close();
cout << "Request trace file closed." << endl;
m_enabled = false;
}
}
void
Tracer::traceRequest(Sequencer* sequencer, const Address& data_addr,
const Address& pc_addr, RubyRequestType type, Time time)
{
assert(m_enabled);
TraceRecord tr(sequencer, data_addr, pc_addr, type, time);
tr.output(m_trace_file);
}
int
Tracer::playbackTrace(string filename)
{
igzstream in(filename.c_str());
if (in.fail()) {
cprintf("Error: error opening file '%s'\n", filename);
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 == m_warmup_length) {
cprintf("Clearing stats after warmup of length %s\n",
m_warmup_length);
g_system_ptr->clearStats();
}
}
// Flush the prefetches through the system
// FIXME - should be smarter
g_eventQueue_ptr->triggerEvents(g_eventQueue_ptr->getTime() + 1000);
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
{
}
Tracer *
RubyTracerParams::create()
{
return new Tracer(this);
}
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