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/*=========================================================================
Program: KWSys - Kitware System Library
Module: $RCSfile$
Copyright (c) Kitware, Inc., Insight Consortium. 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 notices for more information.
=========================================================================*/
#ifndef @KWSYS_NAMESPACE@_DynamicLoader_hxx
#define @KWSYS_NAMESPACE@_DynamicLoader_hxx
#include <@KWSYS_NAMESPACE@/Configure.h>
namespace @KWSYS_NAMESPACE@
{
// Ugly stuff for library handles
// They are different on several different OS's
#if defined(__hpux)
#include <dl.h>
typedef shl_t LibHandle;
#elif defined(_WIN32)
#include <windows.h>
typedef HMODULE LibHandle;
#elif defined(__APPLE__)
#include <AvailabilityMacros.h>
#if MAC_OS_X_VERSION_MIN_REQUIRED < 1030
#include <mach-o/dyld.h>
typedef NSModule LibHandle;
#else
typedef void* LibHandle;
#endif
#else
typedef void* LibHandle;
#endif
} // namespace @KWSYS_NAMESPACE@
namespace @KWSYS_NAMESPACE@
{
// Return type from DynamicLoader::GetSymbolAddress.
typedef void (*DynamicLoaderFunction)();
/** \class DynamicLoader
* \brief Portable loading of dynamic libraries or dll's.
*
* DynamicLoader provides a portable interface to loading dynamic
* libraries or dll's into a process.
*
* Directory currently works with Windows, Apple, HP-UX and Unix (POSIX)
* operating systems
*/
class @KWSYS_NAMESPACE@_EXPORT DynamicLoader
{
public:
DynamicLoader();
~DynamicLoader();
/** Load a dynamic library into the current process.
* The returned LibHandle can be used to access the symbols in the
* library. */
static LibHandle OpenLibrary(const char*);
/** Attempt to detach a dynamic library from the
* process. A value of true is returned if it is sucessful. */
static int CloseLibrary(LibHandle);
/** Find the address of the symbol in the given library. */
static DynamicLoaderFunction GetSymbolAddress(LibHandle, const char*);
/** Return the library prefix for the given architecture */
static const char* LibPrefix();
/** Return the library extension for the given architecture. */
static const char* LibExtension();
/** Return the last error produced from a calls made on this class. */
static const char* LastError();
}; // End Class: DynamicLoader
} // namespace @KWSYS_NAMESPACE@
#endif
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