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/****************************************************************************
* Copyright (C) 2009-2015 EPAM Systems
*
* This file is part of Indigo toolkit.
*
* This file may be distributed and/or modified under the terms of the
* GNU General Public License version 3 as published by the Free Software
* Foundation and appearing in the file LICENSE.GPL included in the
* packaging of this file.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
***************************************************************************/
#ifndef __temporary_thread_obj__
#define __temporary_thread_obj__
#include <unordered_map>
#include <chrono>
#include <thread>
#include <memory>
#include <mutex>
#ifdef _WIN32
#pragma warning(push)
#pragma warning(disable:4251)
#endif
namespace indigo {
//
// Various Indigo API methods returns pointers to the temporary buffers
// This leads to an issues when multiple threads gets the same pointers
// To avoid this we returns a temporary object that belongs to the current
// thread for a short time (10 sec).
//
template <typename T>
class TemporaryThreadObjManager
{
public:
// This method return a temporary object for this thread that lives at least 10 seconds.
// Method is synchronized
T& getObject ();
private:
typedef std::chrono::steady_clock steady_clock;
struct Container
{
Container();
Container(Container&& that);
steady_clock::time_point timestamp;
std::unique_ptr<T> obj;
};
typedef std::unordered_map<std::thread::id, Container> Map;
Map _objects;
std::mutex access_mutex;
};
#include "temporary_thread_obj.hpp"
}
#ifdef _WIN32
#pragma warning(pop)
#endif
#endif // __tlscont_h__
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