diff options
Diffstat (limited to 'libio/fileno.c')
| -rw-r--r-- | libio/fileno.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/libio/fileno.c b/libio/fileno.c index fbea4d4995..2dc67149c8 100644 --- a/libio/fileno.c +++ b/libio/fileno.c @@ -1,5 +1,5 @@ /* -Copyright (C) 1993, 1995 Free Software Foundation +Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc. This file is part of the GNU IO Library. This library is free software; you can redistribute it and/or modify it under the @@ -36,3 +36,12 @@ fileno (fp) return _IO_fileno (fp); } + +#ifdef _IO_MTSAFE_IO +/* The fileno implementation for libio does not require locking because + it only accesses once a single variable and this is already atomic + (at least at thread level). */ + +weak_alias (fileno_unlocked, fileno) +weak_alias (fileno_locked, fileno) +#endif |