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/*
* Copyright (c) 2006 The Regents of The University of Michigan
* Copyright (c) 2013 Advanced Micro Devices, Inc.
* Copyright (c) 2013 Mark D. Hill and David A. Wood
* All rights reserved.
*
* 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: Nathan Binkert
* Steve Reinhardt
*/
#include "sim/core.hh"
#include <iostream>
#include <string>
#include "base/callback.hh"
#include "base/cprintf.hh"
#include "base/logging.hh"
#include "base/output.hh"
#include "sim/eventq.hh"
using namespace std;
namespace SimClock {
/// The simulated frequency of curTick(). (In ticks per second)
Tick Frequency;
namespace Float {
double s;
double ms;
double us;
double ns;
double ps;
double Hz;
double kHz;
double MHz;
double GHz;
} // namespace Float
namespace Int {
Tick s;
Tick ms;
Tick us;
Tick ns;
Tick ps;
} // namespace Float
} // namespace SimClock
namespace {
bool _clockFrequencyFixed = false;
// Default to 1 THz (1 Tick == 1 ps)
Tick _ticksPerSecond = 1e12;
} // anonymous namespace
void
fixClockFrequency()
{
if (_clockFrequencyFixed)
return;
using namespace SimClock;
Frequency = _ticksPerSecond;
Float::s = static_cast<double>(Frequency);
Float::ms = Float::s / 1.0e3;
Float::us = Float::s / 1.0e6;
Float::ns = Float::s / 1.0e9;
Float::ps = Float::s / 1.0e12;
Float::Hz = 1.0 / Float::s;
Float::kHz = 1.0 / Float::ms;
Float::MHz = 1.0 / Float::us;
Float::GHz = 1.0 / Float::ns;
Int::s = Frequency;
Int::ms = Int::s / 1000;
Int::us = Int::ms / 1000;
Int::ns = Int::us / 1000;
Int::ps = Int::ns / 1000;
cprintf("Global frequency set at %d ticks per second\n", _ticksPerSecond);
_clockFrequencyFixed = true;
}
bool clockFrequencyFixed() { return _clockFrequencyFixed; }
void
setClockFrequency(Tick tps)
{
panic_if(_clockFrequencyFixed,
"Global frequency already fixed at %f ticks/s.", _ticksPerSecond);
_ticksPerSecond = tps;
}
Tick getClockFrequency() { return _ticksPerSecond; }
void
setOutputDir(const string &dir)
{
simout.setDirectory(dir);
}
/**
* Queue of C++ callbacks to invoke on simulator exit.
*/
inline CallbackQueue &
exitCallbacks()
{
static CallbackQueue theQueue;
return theQueue;
}
/**
* Register an exit callback.
*/
void
registerExitCallback(Callback *callback)
{
exitCallbacks().add(callback);
}
/**
* Do C++ simulator exit processing. Exported to Python to be invoked
* when simulator terminates via Python's atexit mechanism.
*/
void
doExitCleanup()
{
exitCallbacks().process();
exitCallbacks().clear();
cout.flush();
}
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