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/****************************************************************************
* Copyright (C) from 2009 to Present EPAM Systems.
*
* This file is part of Indigo toolkit.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
***************************************************************************/
#ifndef __temporary_thread_obj__
#define __temporary_thread_obj__
#include <chrono>
#include <memory>
#include <mutex>
#include <thread>
#include <unordered_map>
#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"
} // namespace indigo
#ifdef _WIN32
#pragma warning(pop)
#endif
#endif // __tlscont_h__
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