I32
Perl_my_fflush_all(pTHX)
{
-#ifdef FFLUSH_NULL
+#if defined(FFLUSH_NULL)
return PerlIO_flush(NULL);
#else
+# if defined(HAS__FWALK)
+ /* undocumented, unprototyped, but very useful BSDism */
+ extern void _fwalk(int (*)(FILE *));
+ _fwalk(&fflush);
+ return 0;
+# else
long open_max = -1;
-# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
-# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
+# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
+# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
-# else
-# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
+# else
+# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
open_max = sysconf(_SC_OPEN_MAX);
-# else
-# ifdef FOPEN_MAX
- open_max = FOPEN_MAX;
# else
-# ifdef OPEN_MAX
- open_max = OPEN_MAX;
+# ifdef FOPEN_MAX
+ open_max = FOPEN_MAX;
# else
-# ifdef _NFILE
+# ifdef OPEN_MAX
+ open_max = OPEN_MAX;
+# else
+# ifdef _NFILE
open_max = _NFILE;
+# endif
# endif
# endif
# endif
-# endif
-# endif
+# endif
if (open_max > 0) {
long i;
for (i = 0; i < open_max; i++)
PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
return 0;
}
-# endif
+# endif
SETERRNO(EBADF,RMS$_IFI);
return EOF;
+# endif
#endif
}