source: XMLIO_V2/external/src/POCO/Foundation.save/Poco/SharedLibrary.h @ 80

//
// 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 "Poco/Foundation.h"


#if defined(hpux) || defined(_hpux)
#include "Poco/SharedLibrary_HPUX.h"
#elif defined(POCO_OS_FAMILY_UNIX)
#include "Poco/SharedLibrary_UNIX.h"
#elif defined(POCO_OS_FAMILY_WINDOWS) && defined(POCO_WIN32_UTF8)
#include "Poco/SharedLibrary_WIN32U.h"
#elif defined(POCO_OS_FAMILY_WINDOWS)
#include "Poco/SharedLibrary_WIN32.h"
#elif defined(POCO_OS_FAMILY_VMS)
#include "Poco/SharedLibrary_VMS.h"
#endif


namespace Poco {


class Foundation_API SharedLibrary: private SharedLibraryImpl
        /// The SharedLibrary class dynamically 
        /// loads shared libraries at run-time.
{
public:
        SharedLibrary();
                /// Creates a SharedLibrary object.
                
        SharedLibrary(const std::string& path);
                /// Creates a SharedLibrary object and loads a library
                /// from the given path.

        virtual ~SharedLibrary();
                /// Destroys the SharedLibrary. The actual library
                /// remains loaded.

        void load(const std::string& path);
                /// Loads a shared library from the given path.
                /// Throws a LibraryAlreadyLoadedException if
                /// a library has already been loaded.
                /// Throws a LibraryLoadException if the library
                /// cannot be loaded.

        void unload();
                /// Unloads a shared library.

        bool isLoaded() const;
                /// Returns true iff a library has been loaded.

        bool hasSymbol(const std::string& name);
                /// Returns true iff the loaded library contains
                /// a symbol with the given name.

        void* getSymbol(const std::string& name);
                /// Returns the address of the symbol with
                /// the given name. For functions, this
                /// is the entry point of the function.
                /// Throws a NotFoundException if the symbol
                /// does not exist.
                
        const std::string& getPath() const;
                /// Returns the path of the library, as
                /// specified in a call to load() or the 
                /// constructor.
                
        static std::string suffix();
                /// Returns the platform-specific filename suffix
                /// for shared libraries (including the period).
                /// In debug mode, the suffix also includes a
                /// "d" to specify the debug version of a library.
                
private:
        SharedLibrary(const SharedLibrary&);
        SharedLibrary& operator = (const SharedLibrary&);
};


} // namespace Poco


#endif // Foundation_SharedLibrary_INCLUDED