1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1995-1998, 2000 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* LINTLIBRARY */ 30 31 /* 32 * wtimeout.c 33 * 34 * XCurses Library 35 * 36 * Copyright 1990, 1994 by Mortice Kern Systems Inc. All rights reserved. 37 * 38 */ 39 40 #ifdef M_RCSID 41 #ifndef lint 42 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/wtimeout.c 1.1 " 43 "1995/06/19 16:12:14 ant Exp $"; 44 #endif 45 #endif 46 47 #include <private.h> 48 49 /* 50 * Set blocking or non-blocking read for a specified window. 51 * The delay is in milliseconds. 52 */ 53 void 54 wtimeout(WINDOW *w, int delay) 55 { 56 if (delay < 0) { 57 /* Blocking mode */ 58 w->_vmin = 1; 59 w->_vtime = 0; 60 } else { 61 /* Non-Block (0 == delay) and delayed (0 < delay) */ 62 w->_vmin = 0; 63 64 /* 65 * VTIME is in 1/10 of second 66 * w->_vtime value will be set to termios.c_cc[VMIN]. 67 * Since c_cc[VMIN] is an unsigned char type, the value 68 * to be set needs to be smaller than or equal to 255. 69 * Also 'delay' is in milliseconds, so it is rounted up 70 * to the nearest 10th of a second. Only when 'delay' is 71 * equal to 0, w->_vtime should become 0; otherwise, 72 * it should become a positive value. The previous version 73 * of this code was using the expression "(delay + 50) /100", 74 * which was incorrect. 75 */ 76 w->_vtime = (delay > 25500) ? 255 : (delay + 99) / 100; 77 } 78 } 79