116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/*=========================================================================
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Program: Insight Segmentation & Registration Toolkit
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Insight Consortium. All rights reserved.
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See ITKCopyright.txt or http://www.itk.org/HTML/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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// This file is actually 4 different implementations.
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// 1. HP machines which uses shl_load
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// 2. Apple OSX which uses NSLinkModule
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// 3. Windows which uses LoadLibrary
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// 4. Most unix systems which use dlopen (default )
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// Each part of the ifdef contains a complete implementation for
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// the static methods of cmDynamicLoader.
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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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typedef shl_t cmLibHandle;
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#elif defined(_WIN32)
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#include <windows.h>
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typedef HMODULE cmLibHandle;
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#else
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typedef void* cmLibHandle;
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#endif
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typedef void (*cmDynamicLoaderFunction)();
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// ---------------------------------------------------------------
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// 1. Implementation for HPUX machines
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#ifdef __hpux
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#define CMDYNAMICLOADER_DEFINED 1
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#include <dl.h>
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cmDynamicLoaderFunction cmDynamicLoaderGetSymbolAddress(cmLibHandle lib,
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const char* sym)
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{
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void* addr;
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int status;
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status = shl_findsym (&lib, sym, TYPE_PROCEDURE, &addr);
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return (cmDynamicLoaderFunction)((status < 0) ? (void*)0 : addr);
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}
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#endif
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// ---------------------------------------------------------------
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// 2. Implementation for Darwin (including OSX) Machines
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#ifdef __APPLE__
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#define CMDYNAMICLOADER_DEFINED
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#include <mach-o/dyld.h>
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cmDynamicLoaderFunction cmDynamicLoaderGetSymbolAddress(cmLibHandle lib,
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const char* sym)
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{
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void *result=0;
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if(NSIsSymbolNameDefined(sym))
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{
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NSSymbol symbol= NSLookupAndBindSymbol(sym);
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if(symbol)
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{
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result = NSAddressOfSymbol(symbol);
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}
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}
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return (cmDynamicLoaderFunction)result;
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}
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#endif
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// ---------------------------------------------------------------
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// 3. Implementation for Windows win32 code
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#ifdef _WIN32
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#include <windows.h>
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#define CMDYNAMICLOADER_DEFINED 1
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cmDynamicLoaderFunction cmDynamicLoaderGetSymbolAddress(cmLibHandle lib,
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const char* sym)
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{
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#ifdef UNICODE
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wchar_t *wsym = new wchar_t [mbstowcs(NULL, sym, 32000)];
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mbstowcs(wsym, sym, 32000);
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void *ret = GetProcAddress(lib, wsym);
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delete [] wsym;
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return (cmDynamicLoaderFunction)ret;
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#else
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return (cmDynamicLoaderFunction)GetProcAddress(lib, sym);
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#endif
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}
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#endif
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// ---------------------------------------------------------------
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// 4. Implementation for default UNIX machines.
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// if nothing has been defined then use this
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#ifndef CMDYNAMICLOADER_DEFINED
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#define CMDYNAMICLOADER_DEFINED
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// Setup for most unix machines
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#include <dlfcn.h>
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cmDynamicLoaderFunction cmDynamicLoaderGetSymbolAddress(cmLibHandle lib,
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const char* sym)
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{
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return (cmDynamicLoaderFunction)dlsym(lib, sym);
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}
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#endif
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