/usr/include/ITK-4.12/itksys/DynamicLoader.hxx is in libinsighttoolkit4-dev 4.12.2-dfsg1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 | /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing#kwsys for details. */
#ifndef itksys_DynamicLoader_hxx
#define itksys_DynamicLoader_hxx
#include <itksys/Configure.hxx>
#include <string>
#if defined(__hpux)
#include <dl.h>
#elif defined(_WIN32) && !defined(__CYGWIN__)
#include <windows.h>
#elif defined(__APPLE__)
#include <AvailabilityMacros.h>
#if MAC_OS_X_VERSION_MAX_ALLOWED < 1030
#include <mach-o/dyld.h>
#endif
#elif defined(__BEOS__)
#include <be/kernel/image.h>
#endif
namespace itksys {
/** \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
*
* \warning dlopen on *nix system works the following way:
* If filename contains a slash ("/"), then it is interpreted as a (relative
* or absolute) pathname. Otherwise, the dynamic linker searches for the
* library as follows : see ld.so(8) for further details):
* Whereas this distinction does not exist on Win32. Therefore ideally you
* should be doing full path to garantee to have a consistent way of dealing
* with dynamic loading of shared library.
*
* \warning the Cygwin implementation do not use the Win32 HMODULE. Put extra
* condition so that we can include the correct declaration (POSIX)
*/
class itksys_EXPORT DynamicLoader
{
public:
// Ugly stuff for library handles
// They are different on several different OS's
#if defined(__hpux)
typedef shl_t LibraryHandle;
#elif defined(_WIN32) && !defined(__CYGWIN__)
typedef HMODULE LibraryHandle;
#elif defined(__APPLE__)
#if MAC_OS_X_VERSION_MAX_ALLOWED < 1030
typedef NSModule LibraryHandle;
#else
typedef void* LibraryHandle;
#endif
#elif defined(__BEOS__)
typedef image_id LibraryHandle;
#else // POSIX
typedef void* LibraryHandle;
#endif
// Return type from DynamicLoader::GetSymbolAddress.
typedef void (*SymbolPointer)();
/** Load a dynamic library into the current process.
* The returned LibraryHandle can be used to access the symbols in the
* library. */
static LibraryHandle OpenLibrary(const std::string&);
/** Attempt to detach a dynamic library from the
* process. A value of true is returned if it is sucessful. */
static int CloseLibrary(LibraryHandle);
/** Find the address of the symbol in the given library. */
static SymbolPointer GetSymbolAddress(LibraryHandle, const std::string&);
/** Return the default module prefix for the current platform. */
static const char* LibPrefix() { return "lib"; }
/** Return the default module suffix for the current platform. */
static const char* LibExtension() { return ".so"; }
/** Return the last error produced from a calls made on this class. */
static const char* LastError();
}; // End Class: DynamicLoader
} // namespace itksys
#endif
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