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/*
* Copyright (c) 2018 Samsung Electronics 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 __NEURUN_BACKEND_BACKEND_MANAGER_H__
#define __NEURUN_BACKEND_BACKEND_MANAGER_H__
#include <memory>
#include <map>
#include "model/Operands.h"
#include "backend/Backend.h"
namespace neurun
{
namespace backend
{
class BackendManager
{
public:
using backend_create_t = Backend *(*)();
using backend_destroy_t = void (*)(Backend *);
static BackendManager &instance();
public:
Backend *get(const std::string &key);
const Backend *get(const std::string &key) const;
const Backend *getDefault() const;
const std::vector<const Backend *> &getAll() const { return _available_backends; };
private:
BackendManager();
private:
std::vector<const Backend *> _available_backends;
std::map<std::string, std::unique_ptr<Backend, backend_destroy_t>> _gen_map;
std::map<std::string, void *> _handle_map;
/**
* @brief Allocate an object of a class of a plugin by loading a plugin function, that does
* allocation, and calling it
*
* @param object_of_plugin_class target object
* @param obj_creator_func_name name of the plugin function, that allocates an object
* @param handle handle of the plugin
* @param args arguments to pass to constructor of the plugin class
*
* @return
*/
template <typename T, class... Types>
void loadObjectFromPlugin(std::shared_ptr<T> &object_of_plugin_class,
const std::string obj_creator_func_name, void *handle,
Types &&... args);
/**
* @brief load backend plugin
*
* @param backend backend to be loaded
*
* @return
*/
void loadBackend(const std::string &backend);
};
} // namespace backend
} // namespace neurun
#endif // __NEURUN_BACKEND_BACKEND_MANAGER_H__
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