sharedlibrary_unix.cpp

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

//
// SharedLibrary_UNIX.cpp
//
// $Id: //poco/Main/Foundation/src/SharedLibrary_UNIX.cpp#5 $
//
// 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.
//


#include "Foundation/SharedLibrary_UNIX.h"
#include "Foundation/Exception.h"
#include <dlfcn.h>


Foundation_BEGIN


FastMutex SharedLibraryImp::_mutex;


SharedLibraryImp::SharedLibraryImp()
{
	_handle = 0;
}


SharedLibraryImp::~SharedLibraryImp()
{
}


void SharedLibraryImp::loadImp(const std::string& path)
{
	FastMutex::ScopedLock lock(_mutex);

	if (_handle) throw LibraryAlreadyLoadedException(path);
	_handle = dlopen(path.c_str(), RTLD_LAZY | RTLD_LOCAL);
	if (!_handle)
	{
		const char* err = dlerror();
		throw LibraryLoadException(err ? std::string(err) : path);
	}
	_path = path;
}


void SharedLibraryImp::unloadImp()
{
	FastMutex::ScopedLock lock(_mutex);

	if (_handle)
	{
		dlclose(_handle);
		_handle = 0;
	}
}


bool SharedLibraryImp::isLoadedImp() const
{
	return _handle != 0; 
}


void* SharedLibraryImp::findSymbolImp(const std::string& name)
{
	FastMutex::ScopedLock lock(_mutex);

	void* result = 0;
	if (_handle)
	{
		result = dlsym(_handle, name.c_str());
	}
	return result;
}


const std::string& SharedLibraryImp::getPathImp() const
{
	return _path;
}


std::string SharedLibraryImp::suffixImp()
{
#if defined(__APPLE__)
	#if defined(_DEBUG)
		return "d.dylib";
	#else
		return ".dylib";
	#endif
#elif defined(hpux) || defined(_hpux)
	#if defined(_DEBUG)
		return "d.sl";
	#else
		return ".sl";
	#endif
#else
	#if defined(_DEBUG)
		return "d.so";
	#else
		return ".so";
	#endif
#endif
}


Foundation_END