mirror of
https://github.com/FairRootGroup/FairMQ.git
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149 lines
4.5 KiB
C++
149 lines
4.5 KiB
C++
/********************************************************************************
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* Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
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* *
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* This software is distributed under the terms of the *
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* GNU Lesser General Public Licence version 3 (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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/*
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* File: FairMQEventManager.h
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* Author: winckler
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*
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* Created on August 12, 2016, 13:50 PM
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*/
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#ifndef FAIRMQEVENTMANAGER_H
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#define FAIRMQEVENTMANAGER_H
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#include <FairMQLogger.h>
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#include <map>
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#include <utility>
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#include <string>
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#include <boost/any.hpp>
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#include <boost/make_shared.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/signals2.hpp>
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#include <boost/signals2/signal.hpp>
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enum class EventId : uint32_t
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{
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// Place your new EventManager events here
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UpdateParam = 0,
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Custom = 1,
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};
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namespace Events
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{
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template <EventId,typename ...Args>
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struct Traits;
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template <typename T>
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struct Traits<EventId::UpdateParam, T>
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{
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using signal_type = boost::signals2::signal<void(const std::string&, T)>;
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};
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template <typename T>
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struct Traits<EventId::UpdateParam, std::vector<T>>
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{
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using signal_type = boost::signals2::signal<void(const std::string&, const std::vector<T>& )>;
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};
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template <>
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struct Traits<EventId::UpdateParam, std::string>
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{
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using signal_type = boost::signals2::signal<void(const std::string&, const std::string&)>;
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};
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template<std::size_t N>
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struct Traits<EventId::UpdateParam, const char[N]>
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{
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using signal_type = boost::signals2::signal<void(const std::string&, const std::string&)>;
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};
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template <typename ...T>
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struct Traits<EventId::Custom,T...>
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{
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using signal_type = boost::signals2::signal<void(T...)>;
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};
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/*
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template <EventId, typename ...Args> struct Traits2;
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template <> struct Traits2<EventId::UpdateParam> { using signal_type = boost::signals2::signal<void(const std::string&, const std::string&)>; } ;
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template <typename ...T> struct Traits2<EventId::UpdateParam,T...> { using signal_type = boost::signals2::signal<void(const std::string&, T...)>; } ;
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template <> struct Traits2<EventId::UpdateParamInt> { using signal_type = boost::signals2::signal<void(const std::string&, int)>; } ;
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// */
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} // Events namespace
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class FairMQEventManager
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{
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public:
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typedef std::pair<EventId, std::string> EventKey;
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FairMQEventManager() :
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fEventMap()
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{}
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virtual ~FairMQEventManager()
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{}
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template <EventId event, typename... ValueType, typename F>
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void Connect(const std::string& key, F&& func) const
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{
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GetSlot<event, ValueType...>(key).connect(std::forward<F>(func));
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}
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template <EventId event, typename... ValueType>
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void Disconnect(const std::string& key)
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{
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GetSlot<event, ValueType...>(key).disconnect();
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}
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template <EventId event, typename... ValueType, typename... Args>
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void Emit(const std::string& key, Args&&... args)
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{
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GetSlot<event,ValueType...>(key)(std::forward<Args>(args)...);
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}
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template <EventId event>
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bool EventKeyFound(const std::string& key)
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{
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return fEventMap.find(std::pair<EventId, std::string>(event, key)) != fEventMap.end();
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}
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private:
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mutable std::map<EventKey, boost::any> fEventMap;
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template <EventId event, typename... T, typename Slot = typename Events::Traits<event,T...>::signal_type,
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typename SlotPtr = boost::shared_ptr<Slot>>
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Slot& GetSlot(const std::string& key) const
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{
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try
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{
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EventKey eventKey = std::make_pair(event, key);
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//static_assert(std::is_same<decltype(boost::make_shared<Slot>()),SlotPtr>::value, "");
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if (fEventMap.find(eventKey) == fEventMap.end())
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{
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fEventMap.emplace(eventKey, boost::make_shared<Slot>());
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}
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return *boost::any_cast<SlotPtr>(fEventMap.at(eventKey));
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// auto &&tmp = boost::any_cast<SlotPtr>(fEventMap.at(eventKey));
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// return *tmp;
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}
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catch (boost::bad_any_cast const &e)
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{
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LOG(ERROR) << "Caught instance of boost::bad_any_cast: "
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<< e.what() << " on event #" << static_cast<uint32_t>(event) << " and key" << key;
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abort();
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}
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}
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};
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#endif /* FAIRMQEVENTMANAGER_H */
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