2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Linux for s390 port by D.J. Barrow
8 * <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com>
9 * Copyright (c) 2004 Roland McGrath <roland@redhat.com>
10 * Copyright (c) 2006 Dmitry V. Levin <ldv@altlinux.org>
11 * All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. The name of the author may not be used to endorse or promote products
22 * derived from this software without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45 static struct call_counts *countv[SUPPORTED_PERSONALITIES];
46 #define counts (countv[current_personality])
48 static struct timeval shortest = { 1000000, 0 };
51 count_syscall(struct tcb *tcp, struct timeval *tv)
53 if (!SCNO_IN_RANGE(tcp->scno))
57 counts = calloc(nsyscalls, sizeof(*counts));
62 counts[tcp->scno].calls++;
64 counts[tcp->scno].errors++;
66 tv_sub(tv, tv, &tcp->etime);
68 if (tv_cmp(tv, &tcp->dtime) > 0) {
69 static struct timeval one_tick;
71 if (one_tick.tv_usec == 0) {
75 memset(&it, 0, sizeof it);
76 it.it_interval.tv_usec = 1;
77 setitimer(ITIMER_REAL, &it, NULL);
78 getitimer(ITIMER_REAL, &it);
79 one_tick = it.it_interval;
82 if (tv_nz(&tcp->dtime))
84 else if (tv_cmp(tv, &one_tick) > 0) {
85 if (tv_cmp(&shortest, &one_tick) < 0)
92 if (tv_cmp(tv, &shortest) < 0)
94 tv_add(&counts[tcp->scno].time, &counts[tcp->scno].time, tv);
98 time_cmp(void *a, void *b)
100 return -tv_cmp(&counts[*((int *) a)].time,
101 &counts[*((int *) b)].time);
105 syscall_cmp(void *a, void *b)
107 return strcmp(sysent[*((int *) a)].sys_name,
108 sysent[*((int *) b)].sys_name);
112 count_cmp(void *a, void *b)
114 int m = counts[*((int *) a)].calls;
115 int n = counts[*((int *) b)].calls;
117 return (m < n) ? 1 : (m > n) ? -1 : 0;
120 static int (*sortfun)();
121 static struct timeval overhead = { -1, -1 };
124 set_sortby(const char *sortby)
126 if (strcmp(sortby, "time") == 0)
128 else if (strcmp(sortby, "calls") == 0)
130 else if (strcmp(sortby, "name") == 0)
131 sortfun = syscall_cmp;
132 else if (strcmp(sortby, "nothing") == 0)
135 fprintf(stderr, "invalid sortby: `%s'\n", sortby);
140 void set_overhead(int n)
142 overhead.tv_sec = n / 1000000;
143 overhead.tv_usec = n % 1000000;
147 call_summary_pers(FILE *outf)
150 int call_cum, error_cum;
151 struct timeval tv_cum, dtv;
153 const char *dashes = "-------------------------";
155 int *sorted_count = calloc(sizeof(int), nsyscalls);
160 call_cum = error_cum = tv_cum.tv_sec = tv_cum.tv_usec = 0;
161 if (overhead.tv_sec == -1) {
162 tv_mul(&overhead, &shortest, 8);
163 tv_div(&overhead, &overhead, 10);
165 for (i = 0; i < nsyscalls; i++) {
167 if (counts == NULL || counts[i].calls == 0)
169 tv_mul(&dtv, &overhead, counts[i].calls);
170 tv_sub(&counts[i].time, &counts[i].time, &dtv);
171 call_cum += counts[i].calls;
172 error_cum += counts[i].errors;
173 tv_add(&tv_cum, &tv_cum, &counts[i].time);
175 if (counts && sortfun)
176 qsort((void *) sorted_count, nsyscalls, sizeof(int), sortfun);
177 fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %s\n",
178 "% time", "seconds", "usecs/call",
179 "calls", "errors", "syscall");
180 fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %-16.16s\n",
181 dashes, dashes, dashes, dashes, dashes, dashes);
183 for (i = 0; i < nsyscalls; i++) {
185 if (counts[j].calls == 0)
187 tv_div(&dtv, &counts[j].time, counts[j].calls);
188 if (counts[j].errors)
189 sprintf(error_str, "%d", counts[j].errors);
192 percent = (100.0 * tv_float(&counts[j].time)
193 / tv_float(&tv_cum));
194 fprintf(outf, "%6.2f %11.6f %11ld %9d %9.9s %s\n",
195 percent, tv_float(&counts[j].time),
196 (long) 1000000 * dtv.tv_sec + dtv.tv_usec,
198 error_str, sysent[j].sys_name);
203 fprintf(outf, "%6.6s %11.11s %11.11s %9.9s %9.9s %-16.16s\n",
204 dashes, dashes, dashes, dashes, dashes, dashes);
206 sprintf(error_str, "%d", error_cum);
209 fprintf(outf, "%6.6s %11.6f %11.11s %9d %9.9s %s\n",
210 "100.00", tv_float(&tv_cum), "",
211 call_cum, error_str, "total");
215 call_summary(FILE *outf)
217 int i, old_pers = current_personality;
219 for (i = 0; i < SUPPORTED_PERSONALITIES; ++i) {
223 if (current_personality != i)
227 "System call usage summary for %u bit mode:\n",
228 personality_wordsize[current_personality] * 8);
229 call_summary_pers(outf);
232 if (old_pers != current_personality)
233 set_personality(old_pers);