MapUpdater.h

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/*
 * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef _MAP_UPDATER_H_INCLUDED
#define _MAP_UPDATER_H_INCLUDED
 
#include "Define.h"
#include <mutex>
#include <thread>
#include <condition_variable>
#include "ProducerConsumerQueue.h"
 
class MapUpdateRequest;
class Map;
 
class TC_GAME_API MapUpdater
{
    public:
 
        MapUpdater() : _cancelationToken(false), pending_requests(0) {}
        ~MapUpdater() { };
 
        friend class MapUpdateRequest;
 
        void schedule_update(Map& map, uint32 diff);
 
        void wait();
 
        void activate(size_t num_threads);
 
        void deactivate();
 
        bool activated();
 
    private:
 
        ProducerConsumerQueue<MapUpdateRequest*> _queue;
 
        std::vector<std::thread> _workerThreads;
        std::atomic<bool> _cancelationToken;
 
        std::mutex _lock;
        std::condition_variable _condition;
        size_t pending_requests;
 
        void update_finished();
 
        void WorkerThread();
};
 
#endif //_MAP_UPDATER_H_INCLUDED