diff options
Diffstat (limited to 'include/libio.h')
| -rw-r--r-- | include/libio.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/libio.h b/include/libio.h index ee727e262f..633ee51bb7 100644 --- a/include/libio.h +++ b/include/libio.h @@ -10,4 +10,15 @@ libc_hidden_proto (__woverflow) libc_hidden_proto (__wunderflow) libc_hidden_proto (__wuflow) +#if defined _IO_MTSAFE_IO && _IO_lock_inexpensive +# undef _IO_flockfile +# define _IO_flockfile(_fp) \ + if (((_fp)->_flags & _IO_USER_LOCK) == 0) \ + _IO_lock_lock (*(_fp)->_lock) +# undef _IO_funlockfile +# define _IO_funlockfile(_fp) \ + if (((_fp)->_flags & _IO_USER_LOCK) == 0) \ + _IO_lock_unlock (*(_fp)->_lock) +#endif + #endif |