src/mem/ruby/recorder/Tracer.cc

   1
   2 /*
   3  * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met: redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer;
  10  * redistributions in binary form must reproduce the above copyright
  11  * notice, this list of conditions and the following disclaimer in the
  12  * documentation and/or other materials provided with the distribution;
  13  * neither the name of the copyright holders nor the names of its
  14  * contributors may be used to endorse or promote products derived from
  15  * this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  20  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  21  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 /*
  31  * $Id$
  32  *
  33  */
  34
  35 #include "mem/ruby/recorder/Tracer.hh"
  36 #include "mem/ruby/recorder/TraceRecord.hh"
  37 #include "mem/ruby/eventqueue/RubyEventQueue.hh"
  38 #include "mem/gems_common/PrioHeap.hh"
  39 #include "mem/ruby/system/System.hh"
  40 #include "mem/ruby/config/RubyConfig.hh"
  41
  42 //added by SS
  43 Tracer::Tracer(const string & name)
  44 {
  45   m_name = name;
  46   m_enabled = false;
  47 }
  48
  49 //commented by SS
  50 //Tracer::Tracer()
  51 //{
  52 //  m_enabled = false;
  53 //}
  54
  55 Tracer::~Tracer()
  56 {
  57 }
  58
  59 void Tracer::init(const vector<string> & argv)
  60 {
  61   m_warmup_length = 0;
  62
  63   for (size_t i=0; i<argv.size(); i+=2) {
  64     if ( argv[i] == "warmup_length") {
  65       m_warmup_length = atoi(argv[i+1].c_str());
  66     }
  67     else {
  68       cerr << "WARNING: Tracer: Unkown configuration parameter: " << argv[i] << endl;
  69       assert(false);
  70     }
  71   }
  72   assert(m_warmup_length  > 0);
  73 }
  74
  75 void Tracer::startTrace(string filename)
  76 {
  77   if (m_enabled) {
  78     stopTrace();
  79   }
  80
  81   if (filename != "") {
  82     m_trace_file.open(filename.c_str());
  83     if (m_trace_file.fail()) {
  84       cout << "Error: error opening file '" << filename << "'" << endl;
  85       cout << "Trace not enabled." << endl;
  86       return;
  87     }
  88     cout << "Request trace enabled to output file '" << filename << "'" << endl;
  89     m_enabled = true;
  90   }
  91 }
  92
  93 void Tracer::stopTrace()
  94 {
  95   if (m_enabled == true) {
  96     m_trace_file.close();
  97     cout << "Request trace file closed." << endl;
  98     m_enabled = false;
  99   }
 100 }
 101
 102 void Tracer::traceRequest(const string & sequencer_name, const Address& data_addr, const Address& pc_addr, RubyRequestType type, Time time)
 103 {
 104   assert(m_enabled == true);
 105   TraceRecord tr(sequencer_name, data_addr, pc_addr, type, time);
 106   tr.output(m_trace_file);
 107 }
 108
 109 // Class method
 110 int Tracer::playbackTrace(string filename)
 111 {
 112   igzstream in(filename.c_str());
 113   if (in.fail()) {
 114     cout << "Error: error opening file '" << filename << "'" << endl;
 115     return 0;
 116   }
 117
 118   time_t start_time = time(NULL);
 119
 120   TraceRecord record;
 121   int counter = 0;
 122   // Read in the next TraceRecord
 123   bool ok = record.input(in);
 124   while (ok) {
 125     // Put it in the right cache
 126     record.issueRequest();
 127     counter++;
 128
 129     // Read in the next TraceRecord
 130     ok = record.input(in);
 131
 132     // Clear the statistics after warmup
 133 /*    if (counter == RubyConfig::getTraceWarmupLength()) {
 134       cout << "Clearing stats after warmup of length " << RubyConfig::getTraceWarmupLength() << endl;
 135       g_system_ptr->clearStats();
 136     }
 137 */
 138     if (counter == m_warmup_length) {
 139       cout << "Clearing stats after warmup of length " << m_warmup_length << endl;
 140       g_system_ptr->clearStats();
 141     }
 142
 143   }
 144
 145   // Flush the prefetches through the system
 146   g_eventQueue_ptr->triggerEvents(g_eventQueue_ptr->getTime() + 1000);  // FIXME - should be smarter
 147
 148   time_t stop_time = time(NULL);
 149   double seconds = difftime(stop_time, start_time);
 150   double minutes = seconds / 60.0;
 151   cout << "playbackTrace: " << minutes << " minutes" << endl;
 152
 153   return counter;
 154 }
 155
 156 void Tracer::print(ostream& out) const
 157 {
 158 }