subr.c revision 76169 
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 76169 2001-05-01 08:46:02Z markm $";
40#endif /* not lint */
41
42#include <sys/param.h>
43#include <sys/file.h>
44#include <sys/lock.h>
45#include <sys/user.h>
46#include <sys/proc.h>
47#include <sys/time.h>
48#include <sys/ktrace.h>
49
50#include <stdio.h>
51
52#include "ktrace.h"
53
54getpoints(s)
55	char *s;
56{
57	int facs = 0;
58
59	while (*s) {
60		switch(*s) {
61		case 'c':
62			facs |= KTRFAC_SYSCALL | KTRFAC_SYSRET;
63			break;
64		case 'n':
65			facs |= KTRFAC_NAMEI;
66			break;
67		case 'i':
68			facs |= KTRFAC_GENIO;
69			break;
70		case 's':
71			facs |= KTRFAC_PSIG;
72			break;
73		case 'u':
74			facs |= KTRFAC_USER;
75			break;
76		case 'w':
77			facs |= KTRFAC_CSW;
78			break;
79		case '+':
80			facs |= DEF_POINTS;
81			break;
82		default:
83			return (-1);
84		}
85		s++;
86	}
87	return (facs);
88}
89
90timevaladd(t1, t2)
91	struct timeval *t1, *t2;
92{
93	t1->tv_sec += t2->tv_sec;
94	t1->tv_usec += t2->tv_usec;
95	timevalfix(t1);
96}
97
98timevalsub(t1, t2)
99	struct timeval *t1, *t2;
100{
101	t1->tv_sec -= t2->tv_sec;
102	t1->tv_usec -= t2->tv_usec;
103	timevalfix(t1);
104}
105
106timevalfix(t1)
107	struct timeval *t1;
108{
109	if (t1->tv_usec < 0) {
110		t1->tv_sec--;
111		t1->tv_usec += 1000000;
112	}
113	if (t1->tv_usec >= 1000000) {
114		t1->tv_sec++;
115		t1->tv_usec -= 1000000;
116	}
117}
118