2 * Copyright 1996 Massachusetts Institute of Technology
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose and without fee is hereby
6 * granted, provided that both the above copyright notice and this
7 * permission notice appear in all copies, that both the above
8 * copyright notice and this permission notice appear in all
9 * supporting documentation, and that the name of M.I.T. not be used
10 * in advertising or publicity pertaining to distribution of the
11 * software without specific, written prior permission. M.I.T. makes
12 * no representations about the suitability of this software for any
13 * purpose. It is provided "as is" without express or implied
16 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
17 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
20 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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29 * $FreeBSD: src/share/examples/perfmon/perfmon.c,v 1.5 1999/08/28 00:19:26 peter Exp $
30 * $DragonFly: src/share/examples/perfmon/perfmon.c,v 1.2 2003/06/17 04:36:57 dillon Exp $
33 #include <sys/types.h>
34 #include <sys/ioctl.h>
36 #include <machine/cpu.h>
37 #include <machine/perfmon.h>
48 static int getnum(const char *, int, int);
49 static void usage(const char *) __dead2;
52 main(int argc, char **argv)
55 int loops, i, sleeptime;
58 struct pmc_tstamp then, now;
59 struct pmc_data value;
72 while ((c = getopt(argc, argv, "s:l:uoeiU:m:c:")) != -1) {
75 pmc.pmc_flags |= PMCF_USR;
78 pmc.pmc_flags |= PMCF_OS;
81 pmc.pmc_flags |= PMCF_E;
84 pmc.pmc_flags |= PMCF_INV;
87 pmc.pmc_unit = getnum(optarg, 0, 256);
90 pmc.pmc_mask = getnum(optarg, 0, 256);
93 loops = getnum(optarg, 1, INT_MAX - 1);
96 sleeptime = getnum(optarg, 0, INT_MAX - 1);
106 if (argc - optind != 1)
109 pmc.pmc_event = getnum(argv[optind], 0, 255);
111 buf = malloc((loops + 1) * sizeof *buf);
113 err(1, "malloc(%lu)", (unsigned long)(loops +1) * sizeof *buf);
115 fd = open(_PATH_PERFMON, O_RDWR, 0);
117 err(1, "open: " _PATH_PERFMON);
119 if (ioctl(fd, PMIOSETUP, &pmc) < 0)
120 err(1, "ioctl(PMIOSETUP)");
122 if (ioctl(fd, PMIOTSTAMP, &then) < 0)
123 err(1, "ioctl(PMIOTSTAMP)");
126 if (ioctl(fd, PMIOSTART, &num) < 0)
127 err(1, "ioctl(PMIOSTART)");
130 for (i = 0; i < loops; i++) {
131 if (ioctl(fd, PMIOSTOP, &num) < 0)
132 err(1, "ioctl(PMIOSTOP)");
133 if (ioctl(fd, PMIOREAD, &value) < 0)
134 err(1, "ioctl(PMIOREAD)");
135 buf[i] = value.pmcd_value;
136 if (ioctl(fd, PMIORESET, &value.pmcd_num) < 0)
137 err(1, "ioctl(PMIORESET)");
138 if (ioctl(fd, PMIOSTART, &num) < 0)
139 err(1, "ioctl(PMIOSTART)");
146 if (ioctl(fd, PMIOSTOP, &num) < 0)
147 err(1, "ioctl(PMIOSTOP)");
148 if (ioctl(fd, PMIOREAD, &value) < 0)
149 err(1, "ioctl(PMIOREAD)");
150 buf[i] = value.pmcd_value;
151 if (ioctl(fd, PMIOTSTAMP, &now) < 0)
152 err(1, "ioctl(PMIOTSTAMP)");
155 for (i = 1; i <= loops; i++) {
156 printf("%d: %qd\n", i, buf[i]);
159 printf("total: %f\nmean: %f\n", total, total / loops);
161 printf("clocks (at %d-MHz): %qd\n", now.pmct_rate,
162 now.pmct_value - then.pmct_value);
168 getnum(const char *buf, int min, int max)
174 l = strtol(buf, &ep, 0);
175 if (*buf && !*ep && !errno) {
176 if (l < min || l > max) {
177 errx(1, "`%s': must be between %d and %d",
182 errx(1, "`%s': must be between %ld and %ld",
185 errx(1, "`%s': parameter must be an integer");
189 usage(const char *pname)
192 "usage: %s [-eiou] [-c command] [-l nloops] [-m mask] [-s sleeptime]\n"
193 " [-U unit] counter\n",