gz/plugin/Factory.hh

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/*
 * Copyright (C) 2018 Open Source Robotics Foundation
 *
 * 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 GZ_PLUGIN_FACTORY_HH_
#define GZ_PLUGIN_FACTORY_HH_
 
#include <chrono>
#include <functional>
#include <memory>
#include <tuple>
 
#include <gz/plugin/EnablePluginFromThis.hh>
 
namespace gz
{
  namespace plugin
  {
    template <typename Interface> class ProductDeleter;
 
    template <typename Interface>
    using ProductPtr =
        std::unique_ptr<Interface, ProductDeleter<Interface>>;
 
    template <typename Interface, typename... Args>
    class Factory : public EnablePluginFromThis
    {
      public: using ProductPtrType = ProductPtr<Interface>;
 
      public: ProductPtrType Construct(Args&&... _args);
 
      private: virtual Interface *ImplConstruct(Args&&... _args) = 0;
 
      public: template <typename Product>
      class Producing;
    };
 
    void GZ_PLUGIN_VISIBLE CleanupLostProducts(
        const std::chrono::nanoseconds &_safetyWait =
            std::chrono::nanoseconds(5));
 
    std::size_t GZ_PLUGIN_VISIBLE LostProductCount();
  }
}
 
#include <gz/plugin/detail/Factory.hh>
 
#endif