VTrain/base/Framework/ModuleManager/ModuleFactory.h

69 lines
2.8 KiB
C++

/*
* Copyright(C) 2020. Huawei Technologies Co.,Ltd. All rights reserved.
*
* 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 INC_MODULE_FACTORY_H
#define INC_MODULE_FACTORY_H
#include <string>
#include <map>
#include <functional>
#define MODULE_REGIST(class_name) \
namespace ascendBaseModule { \
class class_name##Helper { \
public: \
class_name##Helper() \
{ \
ModuleFactory::RegisterModule(#class_name, class_name##Helper::CreatObjFunc); \
} \
static void *CreatObjFunc() \
{ \
return new class_name; \
} \
}; \
static class_name##Helper class_name##helper; \
static std::string MT_##class_name = #class_name; \
}
namespace ascendBaseModule {
using Constructor = std::function<void *()>;
class ModuleFactory {
public:
static void RegisterModule(std::string className, Constructor constructor)
{
Constructors()[className] = constructor;
}
static void *MakeModule(const std::string &className)
{
auto itr = Constructors().find(className);
if (itr == Constructors().end()) {
return nullptr;
}
return ((Constructor)itr->second)();
}
private:
inline static std::map<std::string, Constructor> &Constructors()
{
static std::map<std::string, Constructor> instance;
return instance;
}
};
}
#endif