getc.c revision 7257d1b4d25bfac0c802847390e98a464fd787ac
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
#pragma weak _getc_unlocked = getc_unlocked
#include "lint.h"
#include "file64.h"
#include "mtlib.h"
#include <sys/types.h>
#include <stdio.h>
#include <thread.h>
#include <synch.h>
#include "stdiom.h"
#include "mse.h"
#undef getc
#undef getc_unlocked
int
getc(FILE *iop)
{
rmutex_t *lk;
int c;
FLOCKFILE(lk, iop);
_SET_ORIENTATION_BYTE(iop);
c = (--iop->_cnt < 0) ? __filbuf(iop) : *iop->_ptr++;
FUNLOCKFILE(lk);
return (c);
}
int
getc_unlocked(FILE *iop)
{
return ((--iop->_cnt < 0) ? __filbuf(iop) : *iop->_ptr++);
}