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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Insight Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
// .NAME cmDynamicLoader - class interface to system dynamic libraries
// .SECTION Description
// cmDynamicLoader provides a portable interface to loading dynamic
// libraries into a process.
#ifndef __cmDynamicLoader_h
#define __cmDynamicLoader_h
#include "cmStandardIncludes.h"
// Ugly stuff for library handles
// They are different on several different OS's
#if defined(__hpux)
# include <dl.h>
typedef shl_t cmLibHandle;
#elif defined(_WIN32)
#include <windows.h>
typedef HMODULE cmLibHandle;
#else
typedef void* cmLibHandle;
#endif
// Return type from cmDynamicLoader::GetSymbolAddress.
typedef void (*cmDynamicLoaderFunction)();
class cmDynamicLoader
{
public:
// Description:
// Load a dynamic library into the current process.
// The returned cmLibHandle can be used to access the symbols in the
// library.
static cmLibHandle OpenLibrary(const char*);
// Description:
// Attempt to detach a dynamic library from the
// process. A value of true is returned if it is successful.
static int CloseLibrary(cmLibHandle);
// Description:
// Find the address of the symbol in the given library
static cmDynamicLoaderFunction GetSymbolAddress(cmLibHandle, const char*);
// Description:
// Return the library prefix for the given architecture
static const char* LibPrefix();
// Description:
// Return the library extension for the given architecture
static const char* LibExtension();
// Description:
// Return the last error produced from a calls made on this class.
static const char* LastError();
protected:
cmDynamicLoader() {};
~cmDynamicLoader() {};
private:
cmDynamicLoader(const cmDynamicLoader&); // Not implemented.
void operator=(const cmDynamicLoader&); // Not implemented.
};
#endif
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