reactos/lib/3rdparty/mingw/atonexit.c

   1 /**
   2  * This file has no copyright assigned and is placed in the Public Domain.
   3  * This file is part of the w64 mingw-runtime package.
   4  * No warranty is given; refer to the file DISCLAIMER within this package.
   5  */
   6
   7 #undef CRTDLL
   8 #ifndef _DLL
   9 #define _DLL
  10 #endif
  11
  12 #include <oscalls.h>
  13 #include <internal.h>
  14 #include <stdlib.h>
  15 #include <crtdefs.h>
  16 #include <limits.h>
  17 #include <windows.h>
  18
  19 #define _EXIT_LOCK1 8
  20
  21   void __cdecl _lock (int _File);
  22   void __cdecl _unlock (int _File);
  23
  24 _PVFV *__onexitbegin;
  25 _PVFV *__onexitend;
  26
  27 extern _CRTIMP _onexit_t __dllonexit (_onexit_t, _PVFV**, _PVFV**);
  28 extern _onexit_t (__cdecl *_imp___onexit) (_onexit_t func);
  29
  30 /* Choose a different name to prevent name conflicts. The CRT one works fine.  */
  31 _onexit_t __cdecl mingw_onexit(_onexit_t func)
  32 {
  33   _PVFV *onexitbegin;
  34   _PVFV *onexitend;
  35   _onexit_t retval;
  36
  37   onexitbegin = (_PVFV *) _decode_pointer (__onexitbegin);
  38
  39   if (onexitbegin == (_PVFV *) -1)
  40     return (*_imp___onexit) (func);
  41   _lock (_EXIT_LOCK1);
  42   onexitbegin = (_PVFV *) _decode_pointer (__onexitbegin);
  43   onexitend = (_PVFV *) _decode_pointer (__onexitend);
  44
  45   retval = __dllonexit (func, &onexitbegin, &onexitend);
  46
  47   __onexitbegin = (_PVFV *) _encode_pointer (onexitbegin);
  48   __onexitend = (_PVFV *) _encode_pointer (onexitend);
  49   _unlock (_EXIT_LOCK1);
  50   return retval;
  51 }
  52
  53 int __cdecl
  54 atexit (_PVFV func)
  55 {
  56   return (mingw_onexit((_onexit_t)func) == NULL) ? -1 : 0;
  57 }