1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1984 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* The following macros improve performance of the stdio by reducing the 28*0Sstevel@tonic-gate number of calls to _bufsync and _wrtchk. _BUFSYNC has the same 29*0Sstevel@tonic-gate effect as _bufsync, and _WRTCHK has the same effect as _wrtchk, 30*0Sstevel@tonic-gate but often these functions have no effect, and in those cases the 31*0Sstevel@tonic-gate macros avoid the expense of calling the functions. */ 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #define _BUFSYNC(iop) if ((iop->_base + iop->_bufsiz) - iop->_ptr < \ 34*0Sstevel@tonic-gate ( iop->_cnt < 0 ? 0 : iop->_cnt ) ) \ 35*0Sstevel@tonic-gate _bufsync(iop) 36*0Sstevel@tonic-gate #define _WRTCHK(iop) ((((iop->_flag & (_IOWRT | _IOEOF)) != _IOWRT) \ 37*0Sstevel@tonic-gate || (iop->_base == NULL) \ 38*0Sstevel@tonic-gate || (iop->_ptr == iop->_base && iop->_cnt == 0 \ 39*0Sstevel@tonic-gate && !(iop->_flag & (_IONBF | _IOLBF)))) \ 40*0Sstevel@tonic-gate ? _wrtchk(iop) : 0 ) 41