src/sim/stat_control.cc

   1 /*
   2  * Copyright (c) 2004-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Nathan Binkert
  29  */
  30
  31 // This file will contain default statistics for the simulator that
  32 // don't really belong to a specific simulator object
  33
  34 #include <fstream>
  35 #include <iostream>
  36 #include <list>
  37
  38 #include "base/callback.hh"
  39 #include "base/hostinfo.hh"
  40 #include "base/statistics.hh"
  41 #include "base/time.hh"
  42 #include "cpu/base.hh"
  43 #include "sim/eventq.hh"
  44
  45 using namespace std;
  46
  47 Stats::Formula simSeconds;
  48 Stats::Value simTicks;
  49 Stats::Value simFreq;
  50
  51 namespace Stats {
  52
  53 Time statTime(true);
  54 Tick startTick;
  55
  56 struct SimTicksReset : public Callback
  57 {
  58     void process()
  59     {
  60         statTime.set();
  61         startTick = curTick;
  62     }
  63 };
  64
  65 double
  66 statElapsedTime()
  67 {
  68     Time now(true);
  69     Time elapsed = now - statTime;
  70     return elapsed();
  71 }
  72
  73 Tick
  74 statElapsedTicks()
  75 {
  76     return curTick - startTick;
  77 }
  78
  79 SimTicksReset simTicksReset;
  80
  81 struct Global
  82 {
  83     Stats::Formula hostInstRate;
  84     Stats::Formula hostTickRate;
  85     Stats::Value hostMemory;
  86     Stats::Value hostSeconds;
  87
  88     Stats::Value simInsts;
  89
  90     Global();
  91 };
  92
  93 Global::Global()
  94 {
  95     simInsts
  96         .functor(BaseCPU::numSimulatedInstructions)
  97         .name("sim_insts")
  98         .desc("Number of instructions simulated")
  99         .precision(0)
 100         .prereq(simInsts)
 101         ;
 102
 103     simSeconds
 104         .name("sim_seconds")
 105         .desc("Number of seconds simulated")
 106         ;
 107
 108     simFreq
 109         .scalar(SimClock::Frequency)
 110         .name("sim_freq")
 111         .desc("Frequency of simulated ticks")
 112         ;
 113
 114     simTicks
 115         .functor(statElapsedTicks)
 116         .name("sim_ticks")
 117         .desc("Number of ticks simulated")
 118         ;
 119
 120     hostInstRate
 121         .name("host_inst_rate")
 122         .desc("Simulator instruction rate (inst/s)")
 123         .precision(0)
 124         .prereq(simInsts)
 125         ;
 126
 127     hostMemory
 128         .functor(memUsage)
 129         .name("host_mem_usage")
 130         .desc("Number of bytes of host memory used")
 131         .prereq(hostMemory)
 132         ;
 133
 134     hostSeconds
 135         .functor(statElapsedTime)
 136         .name("host_seconds")
 137         .desc("Real time elapsed on the host")
 138         .precision(2)
 139         ;
 140
 141     hostTickRate
 142         .name("host_tick_rate")
 143         .desc("Simulator tick rate (ticks/s)")
 144         .precision(0)
 145         ;
 146
 147     simSeconds = simTicks / simFreq;
 148     hostInstRate = simInsts / hostSeconds;
 149     hostTickRate = simTicks / hostSeconds;
 150
 151     registerResetCallback(&simTicksReset);
 152 }
 153
 154 void
 155 initSimStats()
 156 {
 157     static Global global;
 158 }
 159
 160 class _StatEvent : public Event
 161 {
 162   private:
 163     bool dump;
 164     bool reset;
 165     Tick repeat;
 166
 167   public:
 168     _StatEvent(bool _dump, bool _reset, Tick _repeat)
 169         : Event(Stat_Event_Pri), dump(_dump), reset(_reset), repeat(_repeat)
 170     {
 171         setFlags(AutoDelete);
 172     }
 173
 174     virtual void
 175     process()
 176     {
 177         if (dump)
 178             Stats::dump();
 179
 180         if (reset)
 181             Stats::reset();
 182
 183         if (repeat) {
 184             Event *event = new _StatEvent(dump, reset, repeat);
 185             mainEventQueue.schedule(event, curTick + repeat);
 186         }
 187     }
 188 };
 189
 190 void
 191 StatEvent(bool dump, bool reset, Tick when, Tick repeat)
 192 {
 193     Event *event = new _StatEvent(dump, reset, repeat);
 194     mainEventQueue.schedule(event, when);
 195 }
 196
 197 /* namespace Stats */ }