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  1. /*
  2.     SDL - Simple DirectMedia Layer
  3.     Copyright (C) 1997-2004 Sam Lantinga
  4.  
  5.     This library is free software; you can redistribute it and/or
  6.     modify it under the terms of the GNU Library General Public
  7.     License as published by the Free Software Foundation; either
  8.     version 2 of the License, or (at your option) any later version.
  9.  
  10.     This library is distributed in the hope that it will be useful,
  11.     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13.     Library General Public License for more details.
  14.  
  15.     You should have received a copy of the GNU Library General Public
  16.     License along with this library; if not, write to the Free
  17.     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18.  
  19.     Sam Lantinga
  20.     slouken@libsdl.org
  21. */
  22.  
  23. #ifdef SAVE_RCSID
  24. static char rcsid =
  25.  "@(#) $Id: SDL_loadso.h,v 1.5 2004/01/04 16:49:07 slouken Exp $";
  26. #endif
  27.  
  28. /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  29. /* System dependent library loading routines                           */
  30.  
  31. /* Some things to keep in mind:                                        
  32.    - These functions only work on C function names.  Other languages may
  33.      have name mangling and intrinsic language support that varies from
  34.      compiler to compiler.
  35.    - Make sure you declare your function pointers with the same calling
  36.      convention as the actual library function.  Your code will crash
  37.      mysteriously if you do not do this.
  38.    - Avoid namespace collisions.  If you load a symbol from the library,
  39.      it is not defined whether or not it goes into the global symbol
  40.      namespace for the application.  If it does and it conflicts with
  41.      symbols in your code or other shared libraries, you will not get
  42.      the results you expect. :)
  43. */
  44.  
  45.  
  46. #ifndef _SDL_loadso_h
  47. #define _SDL_loadso_h
  48.  
  49. #include "begin_code.h"
  50. /* Set up for C function definitions, even when using C++ */
  51. #ifdef __cplusplus
  52. extern "C" {
  53. #endif
  54.  
  55. /* This function dynamically loads a shared object and returns a pointer
  56.  * to the object handle (or NULL if there was an error).
  57.  * The 'sofile' parameter is a system dependent name of the object file.
  58.  */
  59. extern DECLSPEC void * SDLCALL SDL_LoadObject(const char *sofile);
  60.  
  61. /* Given an object handle, this function looks up the address of the
  62.  * named function in the shared object and returns it.  This address
  63.  * is no longer valid after calling SDL_UnloadObject().
  64.  */
  65. extern DECLSPEC void * SDLCALL SDL_LoadFunction(void *handle, const char *name);
  66.  
  67. /* Unload a shared object from memory */
  68. extern DECLSPEC void SDLCALL SDL_UnloadObject(void *handle);
  69.  
  70. /* Ends C function definitions when using C++ */
  71. #ifdef __cplusplus
  72. }
  73. #endif
  74. #include "close_code.h"
  75.  
  76. #endif /* _SDL_loadso_h */
  77.