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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkDynamicLoader.h,v $
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/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 notice for more information.
=========================================================================*/
// .NAME vtkDynamicLoader - class interface to system dynamic libraries
// .SECTION Description
// vtkDynamicLoader provides a portable interface to loading dynamic
// libraries into a process.
#ifndef __vtkDynamicLoader_h
#define __vtkDynamicLoader_h
#include "vtkObject.h"
//BTX
// Ugly stuff for library handles
// They are different on several different OS's
#if defined(__hpux)
# include <dl.h> // Needed for special dynamic loading on hp
typedef shl_t vtkLibHandle;
#elif defined(_WIN32)
typedef void* vtkLibHandle;
#else
typedef void* vtkLibHandle;
#endif
//ETX
class VTK_COMMON_EXPORT vtkDynamicLoader : public vtkObject
{
public:
static vtkDynamicLoader* New();
vtkTypeRevisionMacro(vtkDynamicLoader,vtkObject);
//BTX
// Description:
// Load a dynamic library into the current process.
// The returned vtkLibHandle can be used to access the symbols in the
// library.
static vtkLibHandle 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(vtkLibHandle);
//ETX
// Description:
// Find the address of the symbol in the given library
static void* GetSymbolAddress(vtkLibHandle, 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:
vtkDynamicLoader() {};
~vtkDynamicLoader() {};
private:
vtkDynamicLoader(const vtkDynamicLoader&); // Not implemented.
void operator=(const vtkDynamicLoader&); // Not implemented.
};
#endif
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