library/stdio_fflush.c
/*
* $Id: stdio_fflush.c,v 1.11 2006-01-08 12:04:24 obarthel Exp $
*
* :ts=4
*
* Portable ISO 'C' (1994) runtime library for the Amiga computer
* Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Neither the name of Olaf Barthel nor the names of contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _STDLIB_NULL_POINTER_CHECK_H
#include "stdlib_null_pointer_check.h"
#endif /* _STDLIB_NULL_POINTER_CHECK_H */
/****************************************************************************/
#ifndef _STDIO_HEADERS_H
#include "stdio_headers.h"
#endif /* _STDIO_HEADERS_H */
/****************************************************************************/
int
fflush(FILE *stream)
{
int result = EOF;
ENTER();
SHOWPOINTER(stream);
if(__check_abort_enabled)
__check_abort();
/* Flush a particular stream? */
if(stream != NULL)
{
struct iob * file = (struct iob *)stream;
assert( __is_valid_iob(file) );
flockfile(stream);
if(__iob_write_buffer_is_valid(file) && __flush_iob_write_buffer(file) < 0)
goto out;
}
else
{
int failed_iob = -1;
int i;
__stdio_lock();
/* Flush all streams which still have unwritten data in the buffer. */
for(i = 0 ; i < __num_iob ; i++)
{
if(__iob[i] != NULL &&
FLAG_IS_SET(__iob[i]->iob_Flags,IOBF_IN_USE) &&
FLAG_IS_SET(__iob[i]->iob_Flags,IOBF_WRITE) &&
__iob_write_buffer_is_valid(__iob[i]))
{
if(__flush_iob_write_buffer(__iob[i]) < 0)
{
failed_iob = i;
break;
}
}
}
__stdio_unlock();
if(failed_iob >= 0)
goto out;
}
result = OK;
out:
if(stream != NULL)
funlockfile(stream);
RETURN(result);
return(result);
}