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      1 //
      2 // Copyright (C) 2014 The Android Open Source Project
      3 //
      4 // Licensed under the Apache License, Version 2.0 (the "License");
      5 // you may not use this file except in compliance with the License.
      6 // You may obtain a copy of the License at
      7 //
      8 //      http://www.apache.org/licenses/LICENSE-2.0
      9 //
     10 // Unless required by applicable law or agreed to in writing, software
     11 // distributed under the License is distributed on an "AS IS" BASIS,
     12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 // See the License for the specific language governing permissions and
     14 // limitations under the License.
     15 //
     16 
     17 #ifndef SHILL_NET_IO_HANDLER_FACTORY_CONTAINER_H_
     18 #define SHILL_NET_IO_HANDLER_FACTORY_CONTAINER_H_
     19 
     20 #include <memory>
     21 
     22 #include <base/lazy_instance.h>
     23 
     24 #include "shill/net/io_handler_factory.h"
     25 
     26 namespace shill {
     27 
     28 // By default, this container will use the IOHandlerFactory that uses
     29 // libbase's FileDescriptorWatcher. The caller can implement their own
     30 // IOHandlerFactory and overwrite the default using SetIOHandlerFactory.
     31 class SHILL_EXPORT IOHandlerFactoryContainer {
     32  public:
     33   virtual ~IOHandlerFactoryContainer();
     34 
     35   // This is a singleton. Use IOHandlerFactoryContainer::GetInstance()->Foo().
     36   static IOHandlerFactoryContainer* GetInstance();
     37 
     38   // Update the default IOHandlerFactory for creating IOHandlers. This
     39   // container will assume the ownership of the passed in |factory|.
     40   void SetIOHandlerFactory(IOHandlerFactory* factory);
     41 
     42   IOHandlerFactory* GetIOHandlerFactory();
     43 
     44  protected:
     45   IOHandlerFactoryContainer();
     46 
     47  private:
     48   friend struct base::DefaultLazyInstanceTraits<IOHandlerFactoryContainer>;
     49   std::unique_ptr<IOHandlerFactory> factory_;
     50 
     51   DISALLOW_COPY_AND_ASSIGN(IOHandlerFactoryContainer);
     52 };
     53 
     54 }  // namespace shill
     55 
     56 #endif  // SHILL_NET_IO_HANDLER_FACTORY_CONTAINER_H_
     57