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machdep.h revision 1.5.22.1 
      1  1.5.22.1     matt /*	machdep.h,v 1.5 2003/08/07 09:37:43 agc 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  1.5.22.1     matt 		sigset_t set;						\
     40  1.5.22.1     matt 		sigemptyset(&set);					\
     41  1.5.22.1     matt 		sigaddset(&set, SIGALRM);				\
     42  1.5.22.1     matt 		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  1.5.22.1     matt 		sigset_t set;						\
     47  1.5.22.1     matt 		sigemptyset(&set);					\
     48  1.5.22.1     matt 		sigaddset(&set, SIGALRM);				\
     49  1.5.22.1     matt 		sigprocmask(SIG_UNBLOCK, &set, (sigset_t *)0);		\
     50       1.4  mycroft 	} while (0)
     51