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| author | Corinna Vinschen <corinna@vinschen.de> | 2014-01-17 10:55:32 +0000 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2014-01-17 10:55:32 +0000 |
| commit | 7a7e4d4d95e878c62ea5b642da864018b50aae21 (patch) | |
| tree | 7256f4412958add20549f7c053e54b6df1f152cb /newlib/libc/stdio/fflush.c | |
| parent | ae5b40a65bfc48f599a94dbfedb87f88ba6e831e (diff) | |
| download | cygnal-7a7e4d4d95e878c62ea5b642da864018b50aae21.tar.gz cygnal-7a7e4d4d95e878c62ea5b642da864018b50aae21.tar.bz2 cygnal-7a7e4d4d95e878c62ea5b642da864018b50aae21.zip | |
Introduce _STDIO_BSD_SEMANTICS flag to switch fclose/exit file flushing
semantics from POSIX to BSD.
* libc/stdio/fclose.c (_fclose_r): Conditionalize file flushing on
_STDIO_BSD_SEMANTICS. Call __sflush_r rather than _fflush_r. Add
comment.
* libc/stdio/fflush.c (__sflushw_r): New function, only available
if _STDIO_BSD_SEMANTICS is defined.
* libc/stdio/findfp.c (_cleanup_r): Call _fwalk_reent rather than
_fwalk. Conditionalize cleanup function call on _STDIO_BSD_SEMANTICS.
Add comments. Add FIXME.
* libc/stdio/local.h (__sflushw_r): Declare if _STDIO_BSD_SEMANTICS is
defined.
Diffstat (limited to 'newlib/libc/stdio/fflush.c')
| -rw-r--r-- | newlib/libc/stdio/fflush.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/newlib/libc/stdio/fflush.c b/newlib/libc/stdio/fflush.c index ea48b0126..2286e3878 100644 --- a/newlib/libc/stdio/fflush.c +++ b/newlib/libc/stdio/fflush.c @@ -204,6 +204,19 @@ _DEFUN(__sflush_r, (ptr, fp), return 0; } +#ifdef _STDIO_BSD_SEMANTICS +/* Called from _cleanup_r. At exit time, we don't need file locking, + and we don't want to move the underlying file pointer unless we're + writing. */ +int +_DEFUN(__sflushw_r, (ptr, fp), + struct _reent *ptr _AND + register FILE *fp) +{ + return (fp->_flags & __SWR) ? __sflush_r (ptr, fp) : 0; +} +#endif + int _DEFUN(_fflush_r, (ptr, fp), struct _reent *ptr _AND |