stat_control.cc revision 1953 
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
29// This file will contain default statistics for the simulator that
30// don't really belong to a specific simulator object
31
32#include <fstream>
33#include <iostream>
34#include <list>
35
36#include "base/callback.hh"
37#include "base/hostinfo.hh"
38#include "base/statistics.hh"
39#include "base/str.hh"
40#include "base/time.hh"
41#include "base/stats/output.hh"
42#include "cpu/base.hh"
43#include "sim/eventq.hh"
44#include "sim/sim_object.hh"
45#include "sim/stat_control.hh"
46#include "sim/root.hh"
47
48using namespace std;
49
50Stats::Formula hostInstRate;
51Stats::Formula hostTickRate;
52Stats::Value hostMemory;
53Stats::Value hostSeconds;
54
55Stats::Value simTicks;
56Stats::Value simInsts;
57Stats::Value simFreq;
58Stats::Formula simSeconds;
59
60namespace Stats {
61
62Time statTime(true);
63Tick startTick;
64Tick lastDump(0);
65
66class SimTicksReset : public Callback
67{
68  public:
69    void process()
70    {
71        statTime.set();
72        startTick = curTick;
73    }
74};
75
76double
77statElapsedTime()
78{
79    Time now(true);
80    Time elapsed = now - statTime;
81    return elapsed();
82}
83
84Tick
85statElapsedTicks()
86{
87    return curTick - startTick;
88}
89
90SimTicksReset simTicksReset;
91
92void
93InitSimStats()
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(Clock::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
154class StatEvent : public Event
155{
156  protected:
157    int flags;
158    Tick repeat;
159
160  public:
161    StatEvent(int _flags, Tick _when, Tick _repeat);
162    virtual void process();
163    virtual const char *description();
164};
165
166StatEvent::StatEvent(int _flags, Tick _when, Tick _repeat)
167    : Event(&mainEventQueue, Stat_Event_Pri),
168      flags(_flags), repeat(_repeat)
169{
170    setFlags(AutoDelete);
171    schedule(_when);
172}
173
174const char *
175StatEvent::description()
176{
177    return "Statistics dump and/or reset";
178}
179
180void
181StatEvent::process()
182{
183    if (flags & Stats::Dump)
184        DumpNow();
185
186    if (flags & Stats::Reset)
187        reset();
188
189    if (repeat)
190        schedule(curTick + repeat);
191}
192
193list<Output *> OutputList;
194
195void
196DumpNow()
197{
198    assert(lastDump <= curTick);
199    if (lastDump == curTick)
200        return;
201    lastDump = curTick;
202
203    list<Output *>::iterator i = OutputList.begin();
204    list<Output *>::iterator end = OutputList.end();
205    for (; i != end; ++i) {
206        Output *output = *i;
207        if (!output->valid())
208            continue;
209
210        output->output();
211    }
212}
213
214void
215SetupEvent(int flags, Tick when, Tick repeat)
216{
217    new StatEvent(flags, when, repeat);
218}
219
220/* namespace Stats */ }
221
222extern "C" void
223debugDumpStats()
224{
225    Stats::DumpNow();
226}
227
228