subr.c revision 50477 
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#if 0
36static char sccsid[] = "@(#)subr.c	8.1 (Berkeley) 6/6/93";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/usr.bin/ktrace/subr.c 50477 1999-08-28 01:08:13Z peter $";
40#endif /* not lint */
41
42#include <sys/param.h>
43#include <sys/file.h>
44#include <sys/user.h>
45#include <sys/proc.h>
46#include <sys/time.h>
47#include <sys/ktrace.h>
48
49#include <stdio.h>
50
51#include "ktrace.h"
52
53getpoints(s)
54	char *s;
55{
56	int facs = 0;
57
58	while (*s) {
59		switch(*s) {
60		case 'c':
61			facs |= KTRFAC_SYSCALL | KTRFAC_SYSRET;
62			break;
63		case 'n':
64			facs |= KTRFAC_NAMEI;
65			break;
66		case 'i':
67			facs |= KTRFAC_GENIO;
68			break;
69		case 's':
70			facs |= KTRFAC_PSIG;
71			break;
72		case 'u':
73			facs |= KTRFAC_USER;
74			break;
75		case 'w':
76			facs |= KTRFAC_CSW;
77			break;
78		case '+':
79			facs |= DEF_POINTS;
80			break;
81		default:
82			return (-1);
83		}
84		s++;
85	}
86	return (facs);
87}
88
89timevaladd(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
97timevalsub(t1, t2)
98	struct timeval *t1, *t2;
99{
100	t1->tv_sec -= t2->tv_sec;
101	t1->tv_usec -= t2->tv_usec;
102	timevalfix(t1);
103}
104
105timevalfix(t1)
106	struct timeval *t1;
107{
108	if (t1->tv_usec < 0) {
109		t1->tv_sec--;
110		t1->tv_usec += 1000000;
111	}
112	if (t1->tv_usec >= 1000000) {
113		t1->tv_sec++;
114		t1->tv_usec -= 1000000;
115	}
116}
117