84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
#ifndef _EVENTSYSTEM_H
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#define _EVENTSYSTEM_H
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#include <siacommon.h>
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NS_BEGIN(Sia)
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NS_BEGIN(Api)
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enum class EventLevel
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{
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Error,
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Normal,
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Debug
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};
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EventLevel SIADRIVE_EXPORTABLE EventLevelFromString(const SString& eventLevel);
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class SIADRIVE_EXPORTABLE CEvent
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{
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public:
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CEvent(const EventLevel& eventLevel = EventLevel::Normal) :
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_eventLevel(eventLevel)
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{}
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virtual ~CEvent() {}
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private:
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const EventLevel _eventLevel;
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public:
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const EventLevel& GetEventLevel() const { return _eventLevel; }
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virtual SString GetSingleLineMessage() const = 0;
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virtual std::shared_ptr<CEvent> Clone() const = 0;
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virtual SString GetEventName() const = 0;
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virtual json GetEventJson() const = 0;
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};
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typedef std::shared_ptr<CEvent> CEventPtr;
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#define CreateSystemEvent(E) CEventPtr(new E)
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#define CreateSystemEventConsumer(E) [=](const CEvent&) -> void { E(e); }
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CEventPtr SIADRIVE_EXPORTABLE CreateSystemCriticalEvent(const SString& reason);
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// Singleton
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class SIADRIVE_EXPORTABLE CEventSystem
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{
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private:
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CEventSystem();
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private:
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~CEventSystem();
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public:
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// Singleton setup
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CEventSystem(const CEventSystem&) = delete;
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CEventSystem(CEventSystem&&) = delete;
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CEventSystem& operator=(CEventSystem&&) = delete;
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CEventSystem& operator=(const CEventSystem&) = delete;
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private:
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#ifdef _WIN32
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HANDLE _stopEvent;
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#endif
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std::deque<CEventPtr> _eventQueue;
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std::deque<std::function<void(const CEvent&)>> _eventConsumers;
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std::deque<std::function<bool(const CEvent&)>> _oneShotEventConsumers;
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std::mutex _eventMutex;
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std::unique_ptr<std::thread> _processThread;
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std::mutex _oneShotMutex;
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public:
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static CEventSystem EventSystem;
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private:
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void ProcessEvents();
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public:
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void AddEventConsumer(std::function<void(const CEvent&)> consumer);
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void AddOneShotEventConsumer(std::function<bool(const CEvent&)> consumer);
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void NotifyEvent(CEventPtr eventData);
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void Start();
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void Stop();
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};
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NS_END(2)
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#endif //_EVENTSYSTEM_H
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