layerfactory.inl

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/*
 * Copyright (c) 2013,2015 - Adjacent Link LLC, Bridgewater, New Jersey
 * Copyright (c) 2008 - DRS CenGen, LLC, Columbia, Maryland
 * All rights reserved.
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#include "emane/utils/factoryexception.h"
#include <dlfcn.h>

template<class T>
EMANE::LayerFactory<T>::LayerFactory(const std::string & sLibraryName):
  pLibHandle_{},
  createLayerFunc_{},
  destroyLayerFunc_{}
{
  if((pLibHandle_ = dlopen(sLibraryName.c_str(), RTLD_NOW)) == 0)
    {
      throw Utils::FactoryException(dlerror());
    }
  
  if((createLayerFunc_ = reinterpret_cast<CreateLayerFunc>((void (*)())(dlsym(pLibHandle_,"create")))) == 0)
    {
      dlclose(pLibHandle_);
      throw makeException<Utils::FactoryException>("%s  missing create symbol. (Missing DECLARE_XXX_LAYER()?)",
                                                   sLibraryName.c_str());
    }

  if((destroyLayerFunc_ = reinterpret_cast<DestroyLayerFunc>((void (*)())dlsym(pLibHandle_,"destroy"))) == 0)
    {
      dlclose(pLibHandle_);
      throw makeException<Utils::FactoryException>("%s missing destroy symbol. (Missing DECLARE_XXX_LAYER()?)",
                                                   sLibraryName.c_str());
    }
}

template<class T>
EMANE::LayerFactory<T>::~LayerFactory()
{
  dlclose(pLibHandle_);
}

template<class T>
T * EMANE::LayerFactory<T>::createLayer(NEMId id,
                                        PlatformServiceProvider *pPlatformServiceProvider,
                                        RadioServiceProvider * pRadioServiceProvider) const
{
  return createLayerFunc_(id, pPlatformServiceProvider,pRadioServiceProvider);
}

template<class T>
void EMANE::LayerFactory<T>::destoryLayer(T * pLayer) const
{
  destroyLayerFunc_(pLayer);
}