sortix-mirror/libc/stdio/fflush_unlocked.cpp

37 lines
1.3 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013.
This file is part of the Sortix C Library.
The Sortix 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 3 of the License, or (at your
option) any later version.
The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdio/fflush_unlocked.cpp
Flushes a FILE.
*******************************************************************************/
#include <stdio.h>
extern "C" int fflush_unlocked(FILE* fp)
{
int mode = fp->flags & (_FILE_LAST_READ | _FILE_LAST_WRITE);
if ( (mode & _FILE_LAST_READ) && fflush_stop_reading_unlocked(fp) == EOF )
return EOF;
if ( (mode & _FILE_LAST_WRITE) && fflush_stop_writing_unlocked(fp) == EOF )
return EOF;
fp->flags |= mode;
return 0;
}