foundationdb/fdbrpc/LoadPlugin.h

/*
 * LoadPlugin.h
 *
 * This source file is part of the FoundationDB open source project
 *
 * Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
 *
 * 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 _FLOW_LOADPLUGIN_H_
#define _FLOW_LOADPLUGIN_H_

#pragma once

#include <string>
#include "flow/flow.h"

template <class T>
Reference<T> loadPlugin(std::string const& plugin_name) {
	void* (*get_plugin)(const char*) = nullptr;
	void* plugin = loadLibrary(plugin_name.c_str());
	if (plugin)
		get_plugin = (void* (*)(const char*))loadFunction(plugin, "get_plugin");
	return (get_plugin) ? Reference<T>((T*)get_plugin(T::get_plugin_type_name_and_version())) : Reference<T>(nullptr);
}

#endif