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// 
// SharedLibrary_WIN32.cpp 
// 
// Library: Foundation 
// Package: SharedLibrary 
// Module:  SharedLibrary 
// 
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. 
// and Contributors. 
// 
// SPDX-License-Identifier:	BSL-1.0 
// 
 
 
#include "Poco/SharedLibrary_WIN32.h" 
#include "Poco/Path.h" 
#include "Poco/UnWindows.h" 
 
 
namespace Poco { 
 
 
FastMutex SharedLibraryImpl::_mutex; 
 
 
SharedLibraryImpl::SharedLibraryImpl() 
{ 
	_handle = 0; 
} 
 
 
SharedLibraryImpl::~SharedLibraryImpl() 
{ 
} 
 
 
void SharedLibraryImpl::loadImpl(const std::string& path, int /*flags*/) 
{ 
	FastMutex::ScopedLock lock(_mutex); 
 
	if (_handle) throw LibraryAlreadyLoadedException(_path); 
	DWORD flags(0); 
	Path p(path); 
	if (p.isAbsolute()) flags |= LOAD_WITH_ALTERED_SEARCH_PATH; 
	_handle = LoadLibraryExA(path.c_str(), 0, flags); 
	if (!_handle) throw LibraryLoadException(path); 
	_path = path; 
} 
 
 
void SharedLibraryImpl::unloadImpl() 
{ 
	FastMutex::ScopedLock lock(_mutex); 
 
	if (_handle) 
	{ 
		FreeLibrary((HMODULE) _handle); 
		_handle = 0; 
	} 
	_path.clear(); 
} 
 
 
bool SharedLibraryImpl::isLoadedImpl() const 
{ 
	return _handle != 0; 
} 
 
 
void* SharedLibraryImpl::findSymbolImpl(const std::string& name) 
{ 
	FastMutex::ScopedLock lock(_mutex); 
 
	if (_handle) 
	{ 
		return (void*) GetProcAddress((HMODULE) _handle, name.c_str()); 
	} 
	else return 0; 
} 
 
 
const std::string& SharedLibraryImpl::getPathImpl() const 
{ 
	return _path; 
} 
 
 
std::string SharedLibraryImpl::suffixImpl() 
{ 
#if defined(_DEBUG) && !defined(POCO_NO_SHARED_LIBRARY_DEBUG_SUFFIX) 
	return "d.dll"; 
#else 
	return ".dll"; 
#endif 
} 
 
 
bool SharedLibraryImpl::setSearchPathImpl(const std::string& path) 
{ 
#if _WIN32_WINNT >= 0x0502 
	return SetDllDirectoryA(path.c_str()) != 0; 
#else 
	return false; 
#endif 
} 
 
 
} // namespace Poco