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,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/types.h>
33 #include <sys/ioctl.h>
35 #include <machine/cpu.h>
36 #include <machine/perfmon.h>
47 static int getnum(const char *, int, int);
48 static void usage(const char *) __dead2;
51 main(int argc, char **argv)
54 int loops, i, sleeptime;
57 struct pmc_tstamp then, now;
58 struct pmc_data value;
71 while ((c = getopt(argc, argv, "s:l:uoeiU:m:c:")) != -1) {
74 pmc.pmc_flags |= PMCF_USR;
77 pmc.pmc_flags |= PMCF_OS;
80 pmc.pmc_flags |= PMCF_E;
83 pmc.pmc_flags |= PMCF_INV;
86 pmc.pmc_unit = getnum(optarg, 0, 256);
89 pmc.pmc_mask = getnum(optarg, 0, 256);
92 loops = getnum(optarg, 1, INT_MAX - 1);
95 sleeptime = getnum(optarg, 0, INT_MAX - 1);
105 if (argc - optind != 1)
108 pmc.pmc_event = getnum(argv[optind], 0, 255);
110 buf = malloc((loops + 1) * sizeof *buf);
112 err(1, "malloc(%lu)", (unsigned long)(loops +1) * sizeof *buf);
114 fd = open(_PATH_PERFMON, O_RDWR, 0);
116 err(1, "open: " _PATH_PERFMON);
118 if (ioctl(fd, PMIOSETUP, &pmc) < 0)
119 err(1, "ioctl(PMIOSETUP)");
121 if (ioctl(fd, PMIOTSTAMP, &then) < 0)
122 err(1, "ioctl(PMIOTSTAMP)");
125 if (ioctl(fd, PMIOSTART, &num) < 0)
126 err(1, "ioctl(PMIOSTART)");
129 for (i = 0; i < loops; i++) {
130 if (ioctl(fd, PMIOSTOP, &num) < 0)
131 err(1, "ioctl(PMIOSTOP)");
132 if (ioctl(fd, PMIOREAD, &value) < 0)
133 err(1, "ioctl(PMIOREAD)");
134 buf[i] = value.pmcd_value;
135 if (ioctl(fd, PMIORESET, &value.pmcd_num) < 0)
136 err(1, "ioctl(PMIORESET)");
137 if (ioctl(fd, PMIOSTART, &num) < 0)
138 err(1, "ioctl(PMIOSTART)");
145 if (ioctl(fd, PMIOSTOP, &num) < 0)
146 err(1, "ioctl(PMIOSTOP)");
147 if (ioctl(fd, PMIOREAD, &value) < 0)
148 err(1, "ioctl(PMIOREAD)");
149 buf[i] = value.pmcd_value;
150 if (ioctl(fd, PMIOTSTAMP, &now) < 0)
151 err(1, "ioctl(PMIOTSTAMP)");
154 for (i = 1; i <= loops; i++) {
155 printf("%d: %qd\n", i, buf[i]);
158 printf("total: %f\nmean: %f\n", total, total / loops);
160 printf("clocks (at %d-MHz): %qd\n", now.pmct_rate,
161 now.pmct_value - then.pmct_value);
167 getnum(const char *buf, int min, int max)
173 l = strtol(buf, &ep, 0);
174 if (*buf && !*ep && !errno) {
175 if (l < min || l > max) {
176 errx(1, "`%s': must be between %d and %d",
181 errx(1, "`%s': must be between %ld and %ld",
184 errx(1, "`%s': parameter must be an integer");
188 usage(const char *pname)
191 "usage: %s [-eiou] [-c command] [-l nloops] [-m mask] [-s sleeptime]\n"
192 " [-U unit] counter\n",