machdep.h revision 1.2
1/* $OpenBSD: machdep.h,v 1.2 2001/01/28 23:41:48 niklas Exp $ */ 2/* $NetBSD: machdep.h,v 1.4 1995/04/28 21:30:16 mycroft Exp $ */ 3 4/* 5 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)machdep.h 8.1 (Berkeley) 5/31/93 37 */ 38 39#define TIMEOUT 300 /* Sync() timeout in seconds */ 40 41/* for POSIX systems */ 42#define blockalarm() \ 43 do { \ 44 sigset_t sigset; \ 45 sigemptyset(&sigset); \ 46 sigaddset(&sigset, SIGALRM); \ 47 sigprocmask(SIG_BLOCK, &sigset, (sigset_t *)0); \ 48 } while (0) 49#define unblockalarm() \ 50 do { \ 51 sigset_t sigset; \ 52 sigemptyset(&sigset); \ 53 sigaddset(&sigset, SIGALRM); \ 54 sigprocmask(SIG_UNBLOCK, &sigset, (sigset_t *)0); \ 55 } while (0) 56