sharedlibrary.h

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// SharedLibrary.h
//
// $Id: //poco/Main/Foundation/include/Foundation/SharedLibrary.h#5 $
//
// Definition of the SharedLibrary class.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#ifndef Foundation_SharedLibrary_INCLUDED
#define Foundation_SharedLibrary_INCLUDED


#ifndef Foundation_Foundation_INCLUDED
#include "Foundation/Foundation.h"
#endif


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


Foundation_BEGIN


class Foundation_API SharedLibrary: private SharedLibraryImp
	/// 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&);
};


Foundation_END


#endif // Foundation_SharedLibrary_INCLUDED