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/******************************************************************************
* Top contributors (to current version):
* Gereon Kremer, Morgan Deters, Andres Noetzli
*
* This file is part of the cvc5 project.
*
* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS
* in the top-level source directory and their institutional affiliations.
* All rights reserved. See the file COPYING in the top-level source
* directory for licensing information.
* ****************************************************************************
*
* Timer statistics.
*
* Stat classes that hold timers.
*/
#include "util/stats_timer.h"
#include <iostream>
#include "base/check.h"
#include "util/ostream_util.h"
namespace cvc5 {
template <>
void safe_print(int fd, const timer_stat_detail::duration& t)
{
safe_print<uint64_t>(fd, t / std::chrono::seconds(1));
safe_print(fd, ".");
safe_print_right_aligned(fd, (t % std::chrono::seconds(1)).count(), 9);
}
void TimerStat::start()
{
if (CVC5_USE_STATISTICS)
{
PrettyCheckArgument(!d_running, *this, "timer already running");
d_start = timer_stat_detail::clock::now();
d_running = true;
}
}
void TimerStat::stop()
{
if (CVC5_USE_STATISTICS)
{
AlwaysAssert(d_running) << "timer not running";
d_data += timer_stat_detail::clock::now() - d_start;
d_running = false;
}
}
bool TimerStat::running() const { return d_running; }
timer_stat_detail::duration TimerStat::get() const
{
auto data = d_data;
if (CVC5_USE_STATISTICS && d_running)
{
data += timer_stat_detail::clock::now() - d_start;
}
return data;
}
SExpr TimerStat::getValue() const
{
auto data = d_data;
if (CVC5_USE_STATISTICS && d_running)
{
data += timer_stat_detail::clock::now() - d_start;
}
std::stringstream ss;
ss << std::fixed << std::setprecision(8) << data;
return SExpr(Rational::fromDecimal(ss.str()));
}
void TimerStat::flushInformation(std::ostream& out) const { out << get(); }
void TimerStat::safeFlushInformation(int fd) const
{
// Overwrite the implementation in the superclass because we cannot use
// getDataRef(): it might return stale data if the timer is currently
// running.
safe_print<timer_stat_detail::duration>(fd, get());
}
CodeTimer::CodeTimer(TimerStat& timer, bool allow_reentrant)
: d_timer(timer), d_reentrant(false)
{
if (!allow_reentrant || !(d_reentrant = d_timer.running()))
{
d_timer.start();
}
}
CodeTimer::~CodeTimer()
{
if (!d_reentrant)
{
d_timer.stop();
}
}
} // namespace cvc5
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