360 lines
10 KiB
C++
360 lines
10 KiB
C++
//This file is part of Bertini 2.
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//
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//trackers/observers.hpp is free software: you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation, either version 3 of the License, or
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//(at your option) any later version.
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//
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//trackers/observers.hpp is distributed in the hope that it will be useful,
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//but WITHOUT ANY WARRANTY; without even the implied warranty of
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//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//GNU General Public License for more details.
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//
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//You should have received a copy of the GNU General Public License
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//along with trackers/observers.hpp. If not, see <http://www.gnu.org/licenses/>.
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//
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// Copyright(C) 2015 - 2021 by Bertini2 Development Team
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//
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// See <http://www.gnu.org/licenses/> for a copy of the license,
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// as well as COPYING. Bertini2 is provided with permitted
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// additional terms in the b2/licenses/ directory.
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// individual authors of this file include:
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// silviana amethyst, university of wisconsin eau claire
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/**
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\file include/bertini2/trackers/observers.hpp
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\brief Contains the trackers/observers base types
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*/
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#pragma once
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#include "bertini2/trackers/events.hpp"
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#include "bertini2/detail/observer.hpp"
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#include "bertini2/trackers/base_tracker.hpp"
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#include "bertini2/logging.hpp"
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#include <boost/type_index.hpp>
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namespace bertini {
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namespace tracking{
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template<class TrackerT>
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class FirstPrecisionRecorder : public Observer<TrackerT>
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{ BOOST_TYPE_INDEX_REGISTER_CLASS
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using EmitterT = typename TrackerTraits<TrackerT>::EventEmitterType;
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virtual void Observe(AnyEvent const& e) override
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{
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if(auto p = dynamic_cast<const TrackingStarted<EmitterT>*>(&e))
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{
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precision_increased_ = false;
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starting_precision_ = p->Get().CurrentPrecision();
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}
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else if (auto p = dynamic_cast<const PrecisionChanged<EmitterT>*>(&e))
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{
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auto& t = p->Get();
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auto next = p->Next();
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if (next > p->Previous())
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{
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precision_increased_ = true;
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next_precision_ = next;
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time_of_first_increase_ = t.CurrentTime();
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t.RemoveObserver(*this);
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}
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}
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}
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public:
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unsigned StartPrecision() const
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{
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return starting_precision_;
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}
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unsigned NextPrecision() const
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{
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return next_precision_;
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}
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bool DidPrecisionIncrease() const
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{
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return precision_increased_;
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}
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typename TrackerTraits<TrackerT>::BaseComplexType TimeOfIncrease() const
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{
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return time_of_first_increase_;
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}
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virtual ~FirstPrecisionRecorder() = default;
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private:
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unsigned starting_precision_;
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unsigned next_precision_;
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bool precision_increased_;
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typename TrackerTraits<TrackerT>::BaseComplexType time_of_first_increase_;
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};
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template<class TrackerT>
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class MinMaxPrecisionRecorder : public Observer<TrackerT>
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{ BOOST_TYPE_INDEX_REGISTER_CLASS
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using EmitterT = typename TrackerTraits<TrackerT>::EventEmitterType;
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virtual void Observe(AnyEvent const& e) override
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{
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if (auto p = dynamic_cast<const PrecisionChanged<EmitterT>*>(&e))
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{
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auto next_precision = p->Next();
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if (next_precision < min_precision_)
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min_precision_ = next_precision;
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if (next_precision > max_precision_)
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max_precision_ = next_precision;
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}
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else if(auto p = dynamic_cast<const TrackingStarted<EmitterT>*>(&e))
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{
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min_precision_ = p->Get().CurrentPrecision();
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max_precision_ = p->Get().CurrentPrecision();
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}
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}
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public:
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unsigned MinPrecision() const
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{
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return min_precision_;
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}
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unsigned MaxPrecision() const
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{
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return max_precision_;
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}
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void MinPrecision(unsigned m)
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{ min_precision_ = m;}
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void MaxPrecision(unsigned m)
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{ max_precision_ = m;}
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virtual ~MinMaxPrecisionRecorder() = default;
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private:
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unsigned min_precision_ = std::numeric_limits<unsigned>::max();
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unsigned max_precision_ = 0;
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};
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template<class TrackerT>
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class PrecisionAccumulator : public Observer<TrackerT>
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{ BOOST_TYPE_INDEX_REGISTER_CLASS
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using EmitterT = typename TrackerTraits<TrackerT>::EventEmitterType;
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virtual void Observe(AnyEvent const& e) override
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{
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const TrackingEvent<EmitterT>* p = dynamic_cast<const TrackingEvent<EmitterT>*>(&e);
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if (p)
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{
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precisions_.push_back(p->Get().CurrentPrecision());
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}
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}
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public:
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const std::vector<unsigned>& Precisions() const
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{
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return precisions_;
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}
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virtual ~PrecisionAccumulator() = default;
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private:
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std::vector<unsigned> precisions_;
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};
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/**
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Example usage:
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PathAccumulator<AMPTracker> path_accumulator;
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*/
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template<class TrackerT, template<class> class EventT = SuccessfulStep>
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class AMPPathAccumulator : public Observer<TrackerT>
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{ BOOST_TYPE_INDEX_REGISTER_CLASS
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using EmitterT = typename TrackerTraits<TrackerT>::EventEmitterType;
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virtual void Observe(AnyEvent const& e) override
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{
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const EventT<EmitterT>* p = dynamic_cast<const EventT<EmitterT>*>(&e);
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if (p)
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{
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path_.push_back(p->Get().CurrentPoint());
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}
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}
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public:
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const std::vector<Vec<mpfr_complex> >& Path() const
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{
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return path_;
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}
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virtual ~AMPPathAccumulator() = default;
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private:
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std::vector<Vec<mpfr_complex> > path_;
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};
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template<class TrackerT>
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class GoryDetailLogger : public Observer<TrackerT>
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{ BOOST_TYPE_INDEX_REGISTER_CLASS
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public:
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using EmitterT = typename TrackerTraits<TrackerT>::EventEmitterType;
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virtual ~GoryDetailLogger() = default;
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virtual void Observe(AnyEvent const& e) override
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{
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if (auto p = dynamic_cast<const Initializing<EmitterT,dbl>*>(&e))
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{
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BOOST_LOG_TRIVIAL(severity_level::debug) << std::setprecision(p->Get().GetSystem().precision())
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<< "initializing in double, tracking path\nfrom\tt = "
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<< p->StartTime() << "\nto\tt = " << p->EndTime()
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<< "\n from\tx = \n" << p->StartPoint()
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<< "\n tracking system " << p->Get().GetSystem() << "\n\n";
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}
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else if (auto p = dynamic_cast<const Initializing<EmitterT,mpfr_complex>*>(&e))
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{
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BOOST_LOG_TRIVIAL(severity_level::debug) << std::setprecision(p->Get().GetSystem().precision())
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<< "initializing in multiprecision, tracking path\nfrom\tt = " << p->StartTime() << "\nto\tt = " << p->EndTime() << "\n from\tx = \n" << p->StartPoint()
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<< "\n tracking system " << p->Get().GetSystem() << "\n\n";
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}
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else if(auto p = dynamic_cast<const TrackingEnded<EmitterT>*>(&e))
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BOOST_LOG_TRIVIAL(severity_level::trace) << "tracking ended";
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else if (auto p = dynamic_cast<const NewStep<EmitterT>*>(&e))
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{
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auto& t = p->Get();
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BOOST_LOG_TRIVIAL(severity_level::trace) << "Tracker iteration " << t.NumTotalStepsTaken() << "\ncurrent precision: " << t.CurrentPrecision();
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BOOST_LOG_TRIVIAL(severity_level::trace) << std::setprecision(t.CurrentPrecision())
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<< "t = " << t.CurrentTime()
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<< "\ncurrent stepsize: " << t.CurrentStepsize()
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<< "\ndelta_t = " << t.DeltaT()
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<< "\ncurrent x size = " << t.CurrentPoint().size()
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<< "\ncurrent x = " << t.CurrentPoint();
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}
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else if (auto p = dynamic_cast<const SingularStartPoint<EmitterT>*>(&e))
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BOOST_LOG_TRIVIAL(severity_level::trace) << "singular start point";
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else if (auto p = dynamic_cast<const InfinitePathTruncation<EmitterT>*>(&e))
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BOOST_LOG_TRIVIAL(severity_level::trace) << "tracker iteration indicated going to infinity, truncated path";
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else if (auto p = dynamic_cast<const SuccessfulStep<EmitterT>*>(&e))
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{
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BOOST_LOG_TRIVIAL(severity_level::trace) << "tracker iteration successful\n\n\n";
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}
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else if (auto p = dynamic_cast<const FailedStep<EmitterT>*>(&e))
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{
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BOOST_LOG_TRIVIAL(severity_level::trace) << "tracker iteration unsuccessful\n\n\n";
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}
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else if (auto p = dynamic_cast<const SuccessfulPredict<EmitterT,mpfr_complex>*>(&e))
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{
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BOOST_LOG_TRIVIAL(severity_level::trace) << std::setprecision(Precision(p->ResultingPoint())) << "prediction successful (mpfr_complex), result:\n" << p->ResultingPoint();
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}
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else if (auto p = dynamic_cast<const SuccessfulPredict<EmitterT,dbl>*>(&e))
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{
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BOOST_LOG_TRIVIAL(severity_level::trace) << std::setprecision(Precision(p->ResultingPoint())) << "prediction successful (dbl), result:\n" << p->ResultingPoint();
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}
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else if (auto p = dynamic_cast<const SuccessfulCorrect<EmitterT,mpfr_complex>*>(&e))
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{
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BOOST_LOG_TRIVIAL(severity_level::trace) << std::setprecision(Precision(p->ResultingPoint())) << "correction successful (mpfr_complex), result:\n" << p->ResultingPoint();
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}
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else if (auto p = dynamic_cast<const SuccessfulCorrect<EmitterT,dbl>*>(&e))
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{
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BOOST_LOG_TRIVIAL(severity_level::trace) << std::setprecision(Precision(p->ResultingPoint())) << "correction successful (dbl), result:\n" << p->ResultingPoint();
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}
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else if (auto p = dynamic_cast<const PredictorHigherPrecisionNecessary<EmitterT>*>(&e))
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BOOST_LOG_TRIVIAL(severity_level::trace) << "Predictor, higher precision necessary";
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else if (auto p = dynamic_cast<const CorrectorHigherPrecisionNecessary<EmitterT>*>(&e))
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BOOST_LOG_TRIVIAL(severity_level::trace) << "corrector, higher precision necessary";
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else if (auto p = dynamic_cast<const CorrectorMatrixSolveFailure<EmitterT>*>(&e))
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BOOST_LOG_TRIVIAL(severity_level::trace) << "corrector, matrix solve failure or failure to converge";
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else if (auto p = dynamic_cast<const PredictorMatrixSolveFailure<EmitterT>*>(&e))
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BOOST_LOG_TRIVIAL(severity_level::trace) << "predictor, matrix solve failure or failure to converge";
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else if (auto p = dynamic_cast<const FirstStepPredictorMatrixSolveFailure<EmitterT>*>(&e))
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BOOST_LOG_TRIVIAL(severity_level::trace) << "Predictor, matrix solve failure in initial solve of prediction";
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else if (auto p = dynamic_cast<const PrecisionChanged<EmitterT>*>(&e))
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BOOST_LOG_TRIVIAL(severity_level::debug) << "changing precision from " << p->Previous() << " to " << p->Next();
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else
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BOOST_LOG_TRIVIAL(severity_level::debug) << "unlogged event, of type: " << boost::typeindex::type_id_runtime(e).pretty_name();
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}
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};
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template<class TrackerT>
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class StepFailScreenPrinter : public Observer<TrackerT>
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{ BOOST_TYPE_INDEX_REGISTER_CLASS
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public:
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using EmitterT = typename TrackerTraits<TrackerT>::EventEmitterType;
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virtual void Observe(AnyEvent const& e) override
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{
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if (auto p = dynamic_cast<const FailedStep<EmitterT>*>(&e))
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std::cout << "observed step failure" << std::endl;
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}
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virtual ~StepFailScreenPrinter() = default;
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};
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} //re: namespace tracking
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}// re: namespace bertini
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