cpython/PC/os2emx/dllentry.c

/*
    This is the entry point for Python DLL(s).
    It also provides an getenv() function that works from within DLLs.
*/

#define NULL 0

/* Make references to imported symbols to pull them from static library */
#define REF(s)	extern void s (); void *____ref_##s = &s;

REF (Py_Main);

#if defined (__EMX__)

#include <signal.h>

extern int _CRT_init (void);
extern void _CRT_term (void);
extern void __ctordtorInit (void);
extern void __ctordtorTerm (void);

unsigned long _DLL_InitTerm (unsigned long mod_handle, unsigned long flag)
{
  switch (flag)
  {
    case 0:
      if (_CRT_init ()) return 0;
      __ctordtorInit ();
      /* Ignore fatal signals */
      signal (SIGSEGV, SIG_IGN);
      signal (SIGFPE, SIG_IGN);
      return 1;
    case 1:
      __ctordtorTerm ();
      _CRT_term ();
      return 1;
    default:
      return 0;
  }
}

#endif

/* A version of getenv() that works from DLLs */
extern int DosScanEnv (const char *pszName, char **ppszValue);

char *getenv (const char *name)
{
  char *value;
  if (DosScanEnv (name, &value))
    return NULL;
  else
    return value;
}