ktrace.tproj/subr.c

   1 /*
   2  * Copyright (c) 1999, 2000-2001 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*-
  25  * Copyright (c) 1988, 1993
  26  *      The Regents of the University of California.  All rights reserved.
  27  *
  28  * Redistribution and use in source and binary forms, with or without
  29  * modification, are permitted provided that the following conditions
  30  * are met:
  31  * 1. Redistributions of source code must retain the above copyright
  32  *    notice, this list of conditions and the following disclaimer.
  33  * 2. Redistributions in binary form must reproduce the above copyright
  34  *    notice, this list of conditions and the following disclaimer in the
  35  *    documentation and/or other materials provided with the distribution.
  36  * 3. All advertising materials mentioning features or use of this software
  37  *    must display the following acknowledgement:
  38  *      This product includes software developed by the University of
  39  *      California, Berkeley and its contributors.
  40  * 4. Neither the name of the University nor the names of its contributors
  41  *    may be used to endorse or promote products derived from this software
  42  *    without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  */
  56
  57 #ifndef lint
  58 #if 0
  59 static char sccsid[] = "@(#)subr.c      8.1 (Berkeley) 6/6/93";
  60 #endif
  61 static const char rcsid[] =
  62   "$FreeBSD: src/usr.bin/ktrace/subr.c,v 1.6 1999/08/28 01:02:34 peter Exp $";
  63 #endif /* not lint */
  64
  65 #include <sys/param.h>
  66 #include <sys/file.h>
  67 #include <sys/user.h>
  68 #include <sys/proc.h>
  69 #include <sys/time.h>
  70 #include <sys/ktrace.h>
  71
  72 #include <stdio.h>
  73
  74 #include "ktrace.h"
  75
  76 int
  77 getpoints(char *s)
  78 {
  79         int facs = 0;
  80
  81         while (*s) {
  82                 switch(*s) {
  83                 case 'c':
  84                         facs |= KTRFAC_SYSCALL | KTRFAC_SYSRET;
  85                         break;
  86                 case 'n':
  87                         facs |= KTRFAC_NAMEI;
  88                         break;
  89                 case 'i':
  90                         facs |= KTRFAC_GENIO;
  91                         break;
  92                 case 's':
  93                         facs |= KTRFAC_PSIG;
  94                         break;
  95                 case 'u':
  96                         facs |= KTRFAC_USER;
  97                         break;
  98                 case 'w':
  99                         facs |= KTRFAC_CSW;
 100                         break;
 101                 case '+':
 102                         facs |= DEF_POINTS;
 103                         break;
 104                 default:
 105                         return (-1);
 106                 }
 107                 s++;
 108         }
 109         return (facs);
 110 }
 111
 112 void
 113 timevaladd(struct timeval *t1, struct timeval *t2)
 114 {
 115         t1->tv_sec += t2->tv_sec;
 116         t1->tv_usec += t2->tv_usec;
 117         timevalfix(t1);
 118 }
 119
 120 void
 121 timevalsub(struct timeval *t1, struct timeval *t2)
 122 {
 123         t1->tv_sec -= t2->tv_sec;
 124         t1->tv_usec -= t2->tv_usec;
 125         timevalfix(t1);
 126 }
 127
 128 void
 129 timevalfix(struct timeval *t1)
 130 {
 131         if (t1->tv_usec < 0) {
 132                 t1->tv_sec--;
 133                 t1->tv_usec += 1000000;
 134         }
 135         if (t1->tv_usec >= 1000000) {
 136                 t1->tv_sec++;
 137                 t1->tv_usec -= 1000000;
 138         }
 139 }