/*      $OpenBSD: machdep.h,v 1.3 2003/06/03 03:01:41 millert Exp $     */
/*      $NetBSD: machdep.h,v 1.4 1995/04/28 21:30:16 mycroft Exp $      */

/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 *      @(#)machdep.h   8.1 (Berkeley) 5/31/93
 */

#define TIMEOUT 300                             /* Sync() timeout in seconds */

/* for POSIX systems */
#define blockalarm() \
        do {                                                            \
                sigset_t sigset;                                        \
                sigemptyset(&sigset);                                   \
                sigaddset(&sigset, SIGALRM);                            \
                sigprocmask(SIG_BLOCK, &sigset, (sigset_t *)0);         \
        } while (0)
#define unblockalarm() \
        do {                                                            \
                sigset_t sigset;                                        \
                sigemptyset(&sigset);                                   \
                sigaddset(&sigset, SIGALRM);                            \
                sigprocmask(SIG_UNBLOCK, &sigset, (sigset_t *)0);       \
        } while (0)