shared_library.h

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//
// SharedLibrary.h
//
// $Id: //poco/1.3/Foundation/include/Poco/SharedLibrary.h#1 $
//
// Library: Foundation
// Package: SharedLibrary
// Module:  SharedLibrary
//
// Definition of the SharedLibrary class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//

#ifndef Foundation_SharedLibrary_INCLUDED
#define Foundation_SharedLibrary_INCLUDED

#include "behaviortree_cpp/platform.hpp"
#include <string>
#include <mutex>

namespace BT
{
class SharedLibrary
{
  public:
    enum Flags
    {
        SHLIB_GLOBAL = 1,

        SHLIB_LOCAL = 2
    };

    SharedLibrary();

    SharedLibrary(const std::string& path, int flags = 0);

    virtual ~SharedLibrary() = default;

    void load(const std::string& path, int flags = 0);

    void unload();

    bool isLoaded() const;

    bool hasSymbol(const std::string& name);

    void* getSymbol(const std::string& name);

    const std::string& getPath() const;

    static std::string prefix();

    static std::string suffix();

    static std::string getOSName(const std::string& name);

  private:
    SharedLibrary(const SharedLibrary&);
    SharedLibrary& operator=(const SharedLibrary&);

    void* findSymbol(const std::string& name);

    std::string _path;
    void* _handle;
    std::mutex _mutex;
};

}   // namespace Poco

#endif   // Foundation_SharedLibrary_INCLUDED