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subr.c revision 1.2 
      1 /*-
      2  * Copyright (c) 1988, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 /*static char sccsid[] = "from: @(#)subr.c	8.1 (Berkeley) 6/6/93";*/
     36 static char *rcsid = "$Id: subr.c,v 1.2 1994/10/06 15:45:43 mycroft Exp $";
     37 #endif /* not lint */
     38 
     39 #include <sys/param.h>
     40 #include <sys/file.h>
     41 #include <sys/user.h>
     42 #include <sys/proc.h>
     43 #include <sys/time.h>
     44 #include <sys/ktrace.h>
     45 #include <stdio.h>
     46 #include "ktrace.h"
     47 
     48 getpoints(s)
     49 	char *s;
     50 {
     51 	int facs = 0;
     52 
     53 	while (*s) {
     54 		switch(*s) {
     55 		case 'c':
     56 			facs |= KTRFAC_SYSCALL | KTRFAC_SYSRET;
     57 			break;
     58 		case 'n':
     59 			facs |= KTRFAC_NAMEI;
     60 			break;
     61 		case 'i':
     62 			facs |= KTRFAC_GENIO;
     63 			break;
     64 		case 's':
     65 			facs |= KTRFAC_PSIG;
     66 			break;
     67 		case 'w':
     68 			facs |= KTRFAC_CSW;
     69 			break;
     70 		case '+':
     71 			facs |= DEF_POINTS;
     72 			break;
     73 		default:
     74 			return (-1);
     75 		}
     76 		s++;
     77 	}
     78 	return (facs);
     79 }
     80 
     81 timevaladd(t1, t2)
     82 	struct timeval *t1, *t2;
     83 {
     84 	t1->tv_sec += t2->tv_sec;
     85 	t1->tv_usec += t2->tv_usec;
     86 	timevalfix(t1);
     87 }
     88 
     89 timevalsub(t1, t2)
     90 	struct timeval *t1, *t2;
     91 {
     92 	t1->tv_sec -= t2->tv_sec;
     93 	t1->tv_usec -= t2->tv_usec;
     94 	timevalfix(t1);
     95 }
     96 
     97 timevalfix(t1)
     98 	struct timeval *t1;
     99 {
    100 	if (t1->tv_usec < 0) {
    101 		t1->tv_sec--;
    102 		t1->tv_usec += 1000000;
    103 	}
    104 	if (t1->tv_usec >= 1000000) {
    105 		t1->tv_sec++;
    106 		t1->tv_usec -= 1000000;
    107 	}
    108 }
    109