/*
 * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
 * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
 * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
 */

#ifndef THREADING_H
#define THREADING_H

#include <thread>
#include <atomic>

namespace acore
{
    class Runnable
    {
    public:
        virtual ~Runnable() = default;
        virtual void run() = 0;

        void incReference() { ++m_refs; }
        void decReference()
        {
            if (!--m_refs)
                delete this;
        }
    private:
        std::atomic_long m_refs;
    };

    enum Priority
    {
        Priority_Idle,
        Priority_Lowest,
        Priority_Low,
        Priority_Normal,
        Priority_High,
        Priority_Highest,
        Priority_Realtime,
    };

    class Thread
    {
    public:
        Thread();
        explicit Thread(Runnable* instance);
        ~Thread();

        bool wait();
        void destroy();

        void setPriority(Priority type);

        static void Sleep(unsigned long msecs);
        static std::thread::id currentId();

    private:
        Thread(const Thread&);
        Thread& operator=(const Thread&);

        static void ThreadTask(void* param);

        Runnable* const m_task;
        std::thread::id m_iThreadId;
        std::thread m_ThreadImp;
    };
}
#endif