/usr/include/SurgSim/Framework/SharedInstance-inl.h is in libopensurgsim-dev 0.7.0-6ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | // This file is a part of the OpenSurgSim project.
// Copyright 2013, SimQuest Solutions Inc.
//
// 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 SURGSIM_FRAMEWORK_SHAREDINSTANCE_INL_H
#define SURGSIM_FRAMEWORK_SHAREDINSTANCE_INL_H
#include <memory>
#include <functional>
#include <boost/thread/mutex.hpp>
#include <boost/thread/locks.hpp>
#include "SurgSim/Framework/Assert.h"
namespace SurgSim
{
namespace Framework
{
template <typename T>
SharedInstance<T>::SharedInstance() :
m_instanceCreator(defaultInstanceCreator())
{
}
template <typename T>
SharedInstance<T>::SharedInstance(const InstanceCreator& instanceCreator) :
m_instanceCreator(instanceCreator)
{
}
template <typename T>
SharedInstance<T>::~SharedInstance()
{
}
template <typename T>
std::shared_ptr<T> SharedInstance<T>::get()
{
boost::lock_guard<boost::mutex> lock(m_mutex);
std::shared_ptr<T> instance = m_weakInstance.lock();
if (! instance)
{
instance = createInstance();
m_weakInstance = instance;
}
return std::move(instance);
}
template <typename T>
std::shared_ptr<T> SharedInstance<T>::createInstance()
{
std::shared_ptr<T> instance = m_instanceCreator();
SURGSIM_ASSERT(instance);
return std::move(instance);
}
template <typename T>
typename SharedInstance<T>::InstanceCreator SharedInstance<T>::defaultInstanceCreator()
{
return []() { return std::make_shared<T>(); }; // NOLINT(readability/braces)
}
}; // namespace Framework
}; // namespace SurgSim
#endif // SURGSIM_FRAMEWORK_SHAREDINSTANCE_INL_H
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