0572dc3c6e
This changeset removes the support for the autoserialize parameter in GlobalSimLoopExitEvent (including exitSimLoop()) and LocalSimLoopExitEvent. Auto-serialization of the LocalSimLoopExitEvent was never used, so this is not expected to affect anything. However, it was sometimes used for GlobalSimLoopExitEvent. Unfortunately, serialization of global events has never been supported, so checkpoints with such events will currently cause simulation panics. The serialize parameter to exitSimLoop() has been left in-place to maintain API compatibility (removing it would affect m5ops). Instead of just dropping it, we now print a warning if the parameter is set and the exit event is scheduled in the future (i.e., not at the current tick).
162 lines
4.6 KiB
C++
162 lines
4.6 KiB
C++
/*
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* Copyright (c) 2013 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* Copyright (c) 2013 Advanced Micro Devices, Inc.
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* Copyright (c) 2013 Mark D. Hill and David A. Wood
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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*/
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#include <string>
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#include "base/callback.hh"
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#include "base/hostinfo.hh"
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#include "sim/eventq_impl.hh"
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#include "sim/sim_events.hh"
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#include "sim/sim_exit.hh"
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#include "sim/stats.hh"
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using namespace std;
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GlobalSimLoopExitEvent::GlobalSimLoopExitEvent(Tick when,
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const std::string &_cause,
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int c, Tick r)
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: GlobalEvent(when, Sim_Exit_Pri, IsExitEvent),
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cause(_cause), code(c), repeat(r)
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{
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}
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const char *
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GlobalSimLoopExitEvent::description() const
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{
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return "global simulation loop exit";
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}
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//
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// handle termination event
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//
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void
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GlobalSimLoopExitEvent::process()
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{
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if (repeat) {
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schedule(curTick() + repeat);
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}
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}
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void
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exitSimLoop(const std::string &message, int exit_code, Tick when, Tick repeat,
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bool serialize)
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{
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warn_if(serialize && (when != curTick() || repeat),
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"exitSimLoop called with a delay and auto serialization. This is "
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"currently unsupported.");
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new GlobalSimLoopExitEvent(when + simQuantum, message, exit_code, repeat);
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}
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LocalSimLoopExitEvent::LocalSimLoopExitEvent(const std::string &_cause, int c,
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Tick r)
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: Event(Sim_Exit_Pri, IsExitEvent),
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cause(_cause), code(c), repeat(r)
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{
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}
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//
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// handle termination event
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//
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void
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LocalSimLoopExitEvent::process()
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{
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exitSimLoop(cause, 0);
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}
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const char *
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LocalSimLoopExitEvent::description() const
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{
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return "simulation loop exit";
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}
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void
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LocalSimLoopExitEvent::serialize(CheckpointOut &cp) const
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{
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Event::serialize(cp);
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SERIALIZE_SCALAR(cause);
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SERIALIZE_SCALAR(code);
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SERIALIZE_SCALAR(repeat);
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}
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void
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LocalSimLoopExitEvent::unserialize(CheckpointIn &cp)
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{
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Event::unserialize(cp);
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UNSERIALIZE_SCALAR(cause);
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UNSERIALIZE_SCALAR(code);
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UNSERIALIZE_SCALAR(repeat);
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}
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//
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// constructor: automatically schedules at specified time
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//
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CountedExitEvent::CountedExitEvent(const std::string &_cause, int &counter)
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: Event(Sim_Exit_Pri), cause(_cause), downCounter(counter)
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{
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// catch stupid mistakes
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assert(downCounter > 0);
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}
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//
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// handle termination event
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//
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void
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CountedExitEvent::process()
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{
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if (--downCounter == 0) {
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exitSimLoop(cause, 0);
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}
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}
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const char *
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CountedExitEvent::description() const
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{
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return "counted exit";
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}
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