Author: pfg
Date: Tue Jul 22 18:37:59 2014
New Revision: 268987
URL: http://svnweb.freebsd.org/changeset/base/268987
Log:
Revert r268984:
Check for __SAPP flag before calling sflush. This avoids
performance degradation compared to the previous approach.
Submitted by: ache
MFC after: 2 weeks
Modified:
head/lib/libc/stdio/ftell.c
Modified: head/lib/libc/stdio/ftell.c
==============================================================================
--- head/lib/libc/stdio/ftell.c Tue Jul 22 17:30:05 2014 (r268986)
+++ head/lib/libc/stdio/ftell.c Tue Jul 22 18:37:59 2014 (r268987)
@@ -97,8 +97,6 @@ _ftello(FILE *fp, fpos_t *offset)
* Find offset of underlying I/O object, then
* adjust for buffered bytes.
*/
- if (__sflush(fp)) /* may adjust seek offset on append stream */
- return (1);
if (fp->_flags & __SOFF)
pos = fp->_offset;
else {
@@ -120,6 +118,11 @@ _ftello(FILE *fp, fpos_t *offset)
if (HASUB(fp))
pos -= fp->_r; /* Can be negative at this point. */
} else if ((fp->_flags & __SWR) && fp->_p != NULL) {
+ if (fp->_flags & __SAPP) {
+ pos = _sseek(fp, (fpos_t)0, SEEK_END);
+ if (pos == -1)
+ return (1);
+ }
/*
* Writing. Any buffered characters cause the
* position to be greater than that in the
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