Thread.hpp

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/* This file is part of Berserk Engine project                                    */
/* https://github.com/EgorOrachyov/Berserk                                        */
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/* Copyright (c) 2018 - 2021 Egor Orachyov                                        */
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#ifndef BERSERK_THREAD_HPP
#define BERSERK_THREAD_HPP
 
#include <core/Config.hpp>
#include <core/Typedefs.hpp>
 
#include <functional>
#include <mutex>
#include <thread>
#include <vector>
 
#include <ttas_spin_mutex.hpp>
 
BRK_NS_BEGIN
 
class Thread final {
public:
    enum class Flag {
        Before,
        Update,
        After
    };
 
    BRK_API Thread() = default;
    BRK_API ~Thread();
 
    using Callable = std::function<void()>;
 
    BRK_API void Enqueue(Callable callable, Flag flag);
 
    BRK_API void EnqueueBefore(Callable callable) { Enqueue(std::move(callable), Flag::Before); }
 
    BRK_API void EnqueueUpdate(Callable callable) { Enqueue(std::move(callable), Flag::Update); }
 
    BRK_API void EnqueueAfter(Callable callable) { Enqueue(std::move(callable), Flag::After); }
 
    BRK_API void Update();
 
    BRK_API void ExecuteBefore();
 
    BRK_API void ExecuteUpdate();
 
    BRK_API void ExecuteAfter();
 
    BRK_API bool OnThread() const;
 
private:
    std::vector<Callable> mQueueBefore;
    std::vector<Callable> mQueueUpdate;
    std::vector<Callable> mQueueAfter;
 
    std::vector<Callable> mExecuteBefore;
    std::vector<Callable> mExecuteUpdate;
    std::vector<Callable> mExecuteAfter;
 
    std::thread::id mThreadId = std::this_thread::get_id();
 
    mutable yamc::spin_ttas::mutex mMutex;
};
 
BRK_NS_END
 
#endif//BERSERK_THREAD_HPP