mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
77d16e2672
* libio/ioseekpos.c (_IO_seekpos_unlocked): Call _IO_SEEKOF not _IO_SEEKPOS, saving one indirect jump.
67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/* Copyright (C) 1993,1997-1999,2002,2003,2004 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA.
|
|
|
|
As a special exception, if you link the code in this file with
|
|
files compiled with a GNU compiler to produce an executable,
|
|
that does not cause the resulting executable to be covered by
|
|
the GNU Lesser General Public License. This exception does not
|
|
however invalidate any other reasons why the executable file
|
|
might be covered by the GNU Lesser General Public License.
|
|
This exception applies to code released by its copyright holders
|
|
in files containing the exception. */
|
|
|
|
#include <libioP.h>
|
|
|
|
_IO_off64_t
|
|
_IO_seekpos_unlocked (fp, pos, mode)
|
|
_IO_FILE *fp;
|
|
_IO_off64_t pos;
|
|
int mode;
|
|
{
|
|
/* If we have a backup buffer, get rid of it, since the __seekoff
|
|
callback may not know to do the right thing about it.
|
|
This may be over-kill, but it'll do for now. TODO */
|
|
if (_IO_fwide (fp, 0) <= 0)
|
|
{
|
|
if (_IO_have_backup (fp))
|
|
INTUSE(_IO_free_backup_area) (fp);
|
|
}
|
|
else
|
|
{
|
|
if (_IO_have_wbackup (fp))
|
|
INTUSE(_IO_free_wbackup_area) (fp);
|
|
}
|
|
|
|
return _IO_SEEKOFF (fp, pos, 0, mode);
|
|
}
|
|
|
|
|
|
_IO_off64_t
|
|
_IO_seekpos (fp, pos, mode)
|
|
_IO_FILE *fp;
|
|
_IO_off64_t pos;
|
|
int mode;
|
|
{
|
|
_IO_off64_t retval;
|
|
|
|
_IO_acquire_lock (fp);
|
|
retval = _IO_seekpos_unlocked (fp, pos, mode);
|
|
_IO_release_lock (fp);
|
|
return retval;
|
|
}
|