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machdep.h revision 1.6 
      1  1.6  dholland /*	$NetBSD: machdep.h,v 1.6 2008/01/28 01:58:01 dholland Exp $	*/
      2  1.3       cgd 
      3  1.1       cgd /*
      4  1.3       cgd  * Copyright (c) 1983, 1993
      5  1.3       cgd  *	The Regents of the University of California.  All rights reserved.
      6  1.1       cgd  *
      7  1.1       cgd  * Redistribution and use in source and binary forms, with or without
      8  1.1       cgd  * modification, are permitted provided that the following conditions
      9  1.1       cgd  * are met:
     10  1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     11  1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     12  1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     14  1.1       cgd  *    documentation and/or other materials provided with the distribution.
     15  1.5       agc  * 3. Neither the name of the University nor the names of its contributors
     16  1.1       cgd  *    may be used to endorse or promote products derived from this software
     17  1.1       cgd  *    without specific prior written permission.
     18  1.1       cgd  *
     19  1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  1.1       cgd  * SUCH DAMAGE.
     30  1.1       cgd  *
     31  1.3       cgd  *	@(#)machdep.h	8.1 (Berkeley) 5/31/93
     32  1.1       cgd  */
     33  1.1       cgd 
     34  1.1       cgd #define TIMEOUT 300				/* Sync() timeout in seconds */
     35  1.1       cgd 
     36  1.4   mycroft /* for POSIX systems */
     37  1.4   mycroft #define	blockalarm() \
     38  1.4   mycroft 	do {								\
     39  1.6  dholland 		sigset_t set;						\
     40  1.6  dholland 		sigemptyset(&set);					\
     41  1.6  dholland 		sigaddset(&set, SIGALRM);				\
     42  1.6  dholland 		sigprocmask(SIG_BLOCK, &set, (sigset_t *)0);		\
     43  1.4   mycroft 	} while (0)
     44  1.4   mycroft #define	unblockalarm() \
     45  1.4   mycroft 	do {								\
     46  1.6  dholland 		sigset_t set;						\
     47  1.6  dholland 		sigemptyset(&set);					\
     48  1.6  dholland 		sigaddset(&set, SIGALRM);				\
     49  1.6  dholland 		sigprocmask(SIG_UNBLOCK, &set, (sigset_t *)0);		\
     50  1.4   mycroft 	} while (0)
     51