2 * Copyright (c) 2012 ARM Limited
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14 * Copyright (c) 2004-2005 The Regents of The University of Michigan
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18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
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26 * this software without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 * Authors: Nathan Binkert
44 // This file will contain default statistics for the simulator that
45 // don't really belong to a specific simulator object
51 #include "base/callback.hh"
52 #include "base/hostinfo.hh"
53 #include "base/statistics.hh"
54 #include "base/time.hh"
55 #include "config/the_isa.hh"
57 #include "arch/noisa/cpu_dummy.hh"
59 #include "cpu/base.hh"
62 #include "sim/eventq.hh"
63 #include "sim/stat_control.hh"
67 Stats::Formula simSeconds
;
68 Stats::Value simTicks
;
69 Stats::Value finalTick
;
79 struct SimTicksReset
: public Callback
84 startTick
= curTick();
94 Time elapsed
= now
- statTime
;
101 return curTick() - startTick
;
110 SimTicksReset simTicksReset
;
114 Stats::Formula hostInstRate
;
115 Stats::Formula hostOpRate
;
116 Stats::Formula hostTickRate
;
117 Stats::Value hostMemory
;
118 Stats::Value hostSeconds
;
120 Stats::Value simInsts
;
129 .functor(BaseCPU::numSimulatedInsts
)
131 .desc("Number of instructions simulated")
137 .functor(BaseCPU::numSimulatedOps
)
139 .desc("Number of ops (including micro ops) simulated")
146 .desc("Number of seconds simulated")
150 .scalar(SimClock::Frequency
)
152 .desc("Frequency of simulated ticks")
156 .functor(statElapsedTicks
)
158 .desc("Number of ticks simulated")
162 .functor(statFinalTick
)
164 .desc("Number of ticks from beginning of simulation \
165 (restored from checkpoints and never reset)")
169 .name("host_inst_rate")
170 .desc("Simulator instruction rate (inst/s)")
176 .name("host_op_rate")
177 .desc("Simulator op (including micro ops) rate (op/s)")
184 .name("host_mem_usage")
185 .desc("Number of bytes of host memory used")
190 .functor(statElapsedTime
)
191 .name("host_seconds")
192 .desc("Real time elapsed on the host")
197 .name("host_tick_rate")
198 .desc("Simulator tick rate (ticks/s)")
202 simSeconds
= simTicks
/ simFreq
;
203 hostInstRate
= simInsts
/ hostSeconds
;
204 hostOpRate
= simOps
/ hostSeconds
;
205 hostTickRate
= simTicks
/ hostSeconds
;
207 registerResetCallback(&simTicksReset
);
213 static Global global
;
217 * Event to dump and/or reset the statistics.
219 class StatEvent
: public Event
227 StatEvent(bool _dump
, bool _reset
, Tick _repeat
)
228 : Event(Stat_Event_Pri
, AutoDelete
),
229 dump(_dump
), reset(_reset
), repeat(_repeat
)
243 Stats::schedStatEvent(dump
, reset
, curTick() + repeat
, repeat
);
249 schedStatEvent(bool dump
, bool reset
, Tick when
, Tick repeat
)
251 dumpEvent
= new StatEvent(dump
, reset
, repeat
);
252 mainEventQueue
.schedule(dumpEvent
, when
);
256 periodicStatDump(Tick period
)
259 * If the period is set to 0, then we do not want to dump periodically,
260 * thus we deschedule the event. Else, if the period is not 0, but the event
261 * has already been scheduled, we need to get rid of the old event before we
262 * create a new one, as the old event will no longer be moved forward in the
263 * event that we resume from a checkpoint.
265 if (dumpEvent
!= NULL
&& (period
== 0 || dumpEvent
->scheduled())) {
266 // Event should AutoDelete, so we do not need to free it.
267 mainEventQueue
.deschedule(dumpEvent
);
271 * If the period is not 0, we schedule the event. If this is called with a
272 * period that is less than the current tick, then we shift the first dump
273 * by curTick. This ensures that we do not schedule the event is the past.
276 // Schedule the event
277 if (period
>= curTick()) {
278 schedStatEvent(true, true, (Tick
)period
, (Tick
)period
);
280 schedStatEvent(true, true, (Tick
)period
+ curTick(), (Tick
)period
);
289 * If the dumpEvent has been scheduled, but is scheduled in the past, then
290 * we need to shift the event to be at a valid point in time. Therefore, we
291 * shift the event by curTick.
293 if (dumpEvent
!= NULL
&&
294 (dumpEvent
->scheduled() && dumpEvent
->when() < curTick())) {
295 // shift by curTick() and reschedule
296 Tick _when
= dumpEvent
->when();
297 mainEventQueue
.reschedule(dumpEvent
, _when
+ curTick());