kc3-lang/SDL/src/loadso/dlopen/SDL_sysloadso.c

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• Hash : 0479df53
  Author :
  Date : 2023-01-09T09:48:21
  

  Updated copyright for 2023

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• src/loadso/dlopen/SDL_sysloadso.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  #include "../../SDL_internal.h"
  
  #ifdef SDL_LOADSO_DLOPEN
  
  /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
  /* System dependent library loading routines                           */
  
  #include <stdio.h>
  #include <dlfcn.h>
  
  #include "SDL_loadso.h"
  
  #if SDL_VIDEO_DRIVER_UIKIT
  #include "../../video/uikit/SDL_uikitvideo.h"
  #endif
  
  void *
  SDL_LoadObject(const char *sofile)
  {
      void *handle;
      const char *loaderror;
  
  #if SDL_VIDEO_DRIVER_UIKIT
      if (!UIKit_IsSystemVersionAtLeast(8.0)) {
          SDL_SetError("SDL_LoadObject requires iOS 8+");
          return NULL;
      }
  #endif
  
      handle = dlopen(sofile, RTLD_NOW | RTLD_LOCAL);
      loaderror = dlerror();
      if (handle == NULL) {
          SDL_SetError("Failed loading %s: %s", sofile, loaderror);
      }
      return handle;
  }
  
  void *
  SDL_LoadFunction(void *handle, const char *name)
  {
      void *symbol = dlsym(handle, name);
      if (symbol == NULL) {
          /* prepend an underscore for platforms that need that. */
          SDL_bool isstack;
          size_t len = SDL_strlen(name) + 1;
          char *_name = SDL_small_alloc(char, len + 1, &isstack);
          _name[0] = '_';
          SDL_memcpy(&_name[1], name, len);
          symbol = dlsym(handle, _name);
          SDL_small_free(_name, isstack);
          if (symbol == NULL) {
              SDL_SetError("Failed loading %s: %s", name,
                           (const char *)dlerror());
          }
      }
      return symbol;
  }
  
  void SDL_UnloadObject(void *handle)
  {
      if (handle != NULL) {
          dlclose(handle);
      }
  }
  
  #endif /* SDL_LOADSO_DLOPEN */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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