108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
/*=========================================================================
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Program: KWSys - Kitware System Library
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Module: $RCSfile$
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Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#ifndef @KWSYS_NAMESPACE@_DynamicLoader_hxx
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#define @KWSYS_NAMESPACE@_DynamicLoader_hxx
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#include <@KWSYS_NAMESPACE@/Configure.h>
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// Ugly stuff for library handles
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// They are different on several different OS's
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#if defined(__hpux)
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#include <dl.h>
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namespace @KWSYS_NAMESPACE@
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{
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typedef shl_t LibHandle;
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} // namespace @KWSYS_NAMESPACE@
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#elif defined(_WIN32)
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#include <windows.h>
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namespace @KWSYS_NAMESPACE@
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{
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typedef HMODULE LibHandle;
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} // namespace @KWSYS_NAMESPACE@
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#elif defined(__APPLE__)
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#include <AvailabilityMacros.h>
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#if MAC_OS_X_VERSION_MIN_REQUIRED < 1030
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#include <mach-o/dyld.h>
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namespace @KWSYS_NAMESPACE@
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{
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typedef NSModule LibHandle;
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} // namespace @KWSYS_NAMESPACE@
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#else
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namespace @KWSYS_NAMESPACE@
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{
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typedef void* LibHandle;
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} // namespace @KWSYS_NAMESPACE@
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#endif
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#else
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namespace @KWSYS_NAMESPACE@
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{
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typedef void* LibHandle;
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} // namespace @KWSYS_NAMESPACE@
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#endif
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namespace @KWSYS_NAMESPACE@
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{
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// Return type from DynamicLoader::GetSymbolAddress.
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typedef void (*DynamicLoaderFunction)();
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/** \class DynamicLoader
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* \brief Portable loading of dynamic libraries or dll's.
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*
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* DynamicLoader provides a portable interface to loading dynamic
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* libraries or dll's into a process.
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*
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* Directory currently works with Windows, Apple, HP-UX and Unix (POSIX)
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* operating systems
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*
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* \warning dlopen on *nix system works the following way:
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* If filename contains a slash ("/"), then it is interpreted as a (relative or absolute)
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* pathname. Otherwise, the dynamic linker searches for the library as follows :
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* see ld.so(8) for further details):
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* Whereas this distinction does not exist on Win32. Therefore ideally you should be doing
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* full path to garantee to have a consistent way of dealing with dynamic loading of shared
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* library.
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*/
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class @KWSYS_NAMESPACE@_EXPORT DynamicLoader
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{
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public:
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DynamicLoader();
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~DynamicLoader();
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/** Load a dynamic library into the current process.
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* The returned LibHandle can be used to access the symbols in the
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* library. */
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static LibHandle OpenLibrary(const char*);
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/** Attempt to detach a dynamic library from the
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* process. A value of true is returned if it is sucessful. */
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static int CloseLibrary(LibHandle);
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/** Find the address of the symbol in the given library. */
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static DynamicLoaderFunction GetSymbolAddress(LibHandle, const char*);
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/** Return the library prefix for the given architecture */
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static const char* LibPrefix();
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/** Return the library extension for the given architecture. */
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static const char* LibExtension();
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/** Return the last error produced from a calls made on this class. */
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static const char* LastError();
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}; // End Class: DynamicLoader
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} // namespace @KWSYS_NAMESPACE@
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#endif
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