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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.
***************************************************************************/
//
// Implementation for temporary_thread_obj.h
//
#ifndef __temporary_thread_obj_hpp__
#define __temporary_thread_obj_hpp__
template <typename T>
T& TemporaryThreadObjManager<T>::getObject ()
{
std::lock_guard<std::mutex> lock(access_mutex);
std::thread::id id = std::this_thread::get_id();
steady_clock::time_point now = steady_clock::now();
// Find record for this thread
auto it = _objects.find(id);
if (it == _objects.end())
{
// Try to find old record
for (auto obj_it = _objects.begin(); obj_it != _objects.begin(); ++obj_it)
{
auto elapsed_seconds = std::chrono::duration_cast<std::chrono::seconds>(now - it->second.timestamp).count();
if (elapsed_seconds > 10)
{
// reassign to the current thread
Container container = std::move(obj_it->second);
_objects.erase(obj_it);
it = _objects.emplace(id, std::move(container)).first;
break;
}
}
if (it == _objects.end())
// If there are no old record found then create a new record
it = _objects.emplace(id, Container()).first;
}
Container &c = it->second;
c.timestamp = steady_clock::now();
return *c.obj.get();
}
template <typename T>
TemporaryThreadObjManager<T>::Container::Container (Container&& that) : obj(std::move(that.obj))
{
timestamp = that.timestamp;
}
template <typename T>
TemporaryThreadObjManager<T>::Container::Container () : obj(new T())
{
}
#endif // __temporary_thread_obj_hpp__
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