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/*
* Copyright (c) 2013-2014, 2017 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* 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.
*
* Authors: Andrew Bardsley
*/
#include "sim/ticked_object.hh"
#include "params/TickedObject.hh"
#include "sim/clocked_object.hh"
Ticked::Ticked(ClockedObject &object_,
Stats::Scalar *imported_num_cycles,
Event::Priority priority) :
object(object_),
event([this]{ processClockEvent(); }, name(), false, priority),
running(false),
lastStopped(0),
/* Allocate numCycles if an external stat wasn't passed in */
numCyclesLocal((imported_num_cycles ? NULL : new Stats::Scalar)),
numCycles((imported_num_cycles ? *imported_num_cycles :
*numCyclesLocal))
{ }
void
Ticked::processClockEvent() {
++tickCycles;
++numCycles;
countCycles(Cycles(1));
evaluate();
if (running)
object.schedule(event, object.clockEdge(Cycles(1)));
}
void
Ticked::regStats()
{
if (numCyclesLocal) {
numCycles
.name(object.name() + ".totalTickCycles")
.desc("Number of cycles that the object ticked or was stopped");
}
tickCycles
.name(object.name() + ".tickCycles")
.desc("Number of cycles that the object actually ticked");
idleCycles
.name(object.name() + ".idleCycles")
.desc("Total number of cycles that the object has spent stopped");
idleCycles = numCycles - tickCycles;
}
void
Ticked::serialize(CheckpointOut &cp) const
{
uint64_t lastStoppedUint = lastStopped;
paramOut(cp, "lastStopped", lastStoppedUint);
}
void
Ticked::unserialize(CheckpointIn &cp)
{
uint64_t lastStoppedUint = 0;
/* lastStopped is optional on checkpoint restore as this object may be
* being restored from one which has a common base (and so possibly
* many common checkpointed values) but where Ticked is used in the
* checkpointed object but not this one.
* An example would be a CPU model using Ticked restores from a
* simple CPU without without Ticked */
optParamIn(cp, "lastStopped", lastStoppedUint);
lastStopped = Cycles(lastStoppedUint);
}
TickedObject::TickedObject(const TickedObjectParams *params,
Event::Priority priority) :
ClockedObject(params),
/* Make numCycles in Ticked */
Ticked(*this, NULL, priority)
{ }
void
TickedObject::regStats()
{
Ticked::regStats();
ClockedObject::regStats();
}
void
TickedObject::serialize(CheckpointOut &cp) const
{
Ticked::serialize(cp);
ClockedObject::serialize(cp);
}
void
TickedObject::unserialize(CheckpointIn &cp)
{
Ticked::unserialize(cp);
ClockedObject::unserialize(cp);
}
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