1 /* $NetBSD: time.c,v 1.20 2013/07/16 17:47:43 christos Exp $ */
2
3 /*-
4 * Copyright (c) 1980, 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93";
36 #else
37 __RCSID("$NetBSD: time.c,v 1.20 2013/07/16 17:47:43 christos Exp $");
38 #endif
39 #endif /* not lint */
40
41 #ifndef NOT_CSH
42 #include <sys/types.h>
43 #include <stdarg.h>
44 #include "csh.h"
45 #include "extern.h"
46 #endif
47 #include <util.h>
48
49 /*
50 * C Shell - routines handling process timing and niceing
51 */
52 static void pdeltat(FILE *, struct timeval *, struct timeval *);
53 static void pcsecs(FILE *, long);
54
55 #ifndef NOT_CSH
56 void
settimes(void)57 settimes(void)
58 {
59 struct rusage ruch;
60
61 (void)clock_gettime(CLOCK_MONOTONIC, &time0);
62 (void)getrusage(RUSAGE_SELF, &ru0);
63 (void)getrusage(RUSAGE_CHILDREN, &ruch);
64 ruadd(&ru0, &ruch);
65 }
66
67 /*
68 * dotime is only called if it is truly a builtin function and not a
69 * prefix to another command
70 */
71 void
72 /*ARGSUSED*/
dotime(Char ** v,struct command * t)73 dotime(Char **v, struct command *t)
74 {
75 struct rusage ru1, ruch;
76 struct timespec timedol;
77
78 (void)getrusage(RUSAGE_SELF, &ru1);
79 (void)getrusage(RUSAGE_CHILDREN, &ruch);
80 ruadd(&ru1, &ruch);
81 (void)clock_gettime(CLOCK_MONOTONIC, &timedol);
82 prusage(cshout, &ru0, &ru1, &timedol, &time0);
83 }
84
85 /*
86 * donice is only called when it on the line by itself or with a +- value
87 */
88 void
89 /*ARGSUSED*/
donice(Char ** v,struct command * t)90 donice(Char **v, struct command *t)
91 {
92 Char *cp;
93 int nval;
94
95 nval = 0;
96 v++;
97 cp = *v++;
98 if (cp == 0)
99 nval = 4;
100 else if (*v == 0 && any("+-", cp[0]))
101 nval = getn(cp);
102 (void)setpriority(PRIO_PROCESS, 0, nval);
103 }
104
105 void
ruadd(struct rusage * ru,struct rusage * ru2)106 ruadd(struct rusage *ru, struct rusage *ru2)
107 {
108 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime);
109 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime);
110 if (ru2->ru_maxrss > ru->ru_maxrss)
111 ru->ru_maxrss = ru2->ru_maxrss;
112
113 ru->ru_ixrss += ru2->ru_ixrss;
114 ru->ru_idrss += ru2->ru_idrss;
115 ru->ru_isrss += ru2->ru_isrss;
116 ru->ru_minflt += ru2->ru_minflt;
117 ru->ru_majflt += ru2->ru_majflt;
118 ru->ru_nswap += ru2->ru_nswap;
119 ru->ru_inblock += ru2->ru_inblock;
120 ru->ru_oublock += ru2->ru_oublock;
121 ru->ru_msgsnd += ru2->ru_msgsnd;
122 ru->ru_msgrcv += ru2->ru_msgrcv;
123 ru->ru_nsignals += ru2->ru_nsignals;
124 ru->ru_nvcsw += ru2->ru_nvcsw;
125 ru->ru_nivcsw += ru2->ru_nivcsw;
126 }
127 #endif /* NOT_CSH */
128
129 void
prusage(FILE * fp,struct rusage * r0,struct rusage * r1,struct timespec * e,struct timespec * b)130 prusage(FILE *fp, struct rusage *r0, struct rusage *r1, struct timespec *e,
131 struct timespec *b)
132 {
133 #ifndef NOT_CSH
134 struct varent *vp;
135 #endif
136 const char *cp;
137 long i;
138 time_t t;
139 time_t ms;
140
141 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww";
142 ms = (e->tv_sec - b->tv_sec) * 100 + (e->tv_nsec - b->tv_nsec) / 10000000;
143 t = (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 +
144 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 +
145 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 +
146 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000;
147 #ifndef NOT_CSH
148 vp = adrof(STRtime);
149
150 if (vp && vp->vec[0] && vp->vec[1])
151 cp = short2str(vp->vec[1]);
152 #endif
153
154 for (; *cp; cp++)
155 if (*cp != '%')
156 (void) fputc(*cp, fp);
157 else if (cp[1])
158 switch (*++cp) {
159 case 'D': /* (average) unshared data size */
160 (void)fprintf(fp, "%ld", t == 0 ? 0L :
161 (long)((r1->ru_idrss + r1->ru_isrss -
162 (r0->ru_idrss + r0->ru_isrss)) / t));
163 break;
164 case 'E': /* elapsed (wall-clock) time */
165 pcsecs(fp, (long) ms);
166 break;
167 case 'F': /* page faults */
168 (void)fprintf(fp, "%ld", r1->ru_majflt - r0->ru_majflt);
169 break;
170 case 'I': /* FS blocks in */
171 (void)fprintf(fp, "%ld", r1->ru_inblock - r0->ru_inblock);
172 break;
173 case 'K': /* (average) total data memory used */
174 (void)fprintf(fp, "%ld", t == 0 ? 0L :
175 (long)(((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) -
176 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t));
177 break;
178 case 'M': /* max. Resident Set Size */
179 (void)fprintf(fp, "%ld", r1->ru_maxrss / 2L);
180 break;
181 case 'O': /* FS blocks out */
182 (void)fprintf(fp, "%ld", r1->ru_oublock - r0->ru_oublock);
183 break;
184 case 'P': /* percent time spent running */
185 /* check if it did not run at all */
186 if (ms == 0) {
187 (void)fputs("0.0%", fp);
188 } else {
189 char pb[32];
190 (void)fputs(strpct(pb, sizeof(pb),
191 (uintmax_t)t, (uintmax_t)ms, 1), fp);
192 (void)fputc('%', fp);
193 }
194 break;
195 case 'R': /* page reclaims */
196 (void)fprintf(fp, "%ld", r1->ru_minflt - r0->ru_minflt);
197 break;
198 case 'S': /* system CPU time used */
199 pdeltat(fp, &r1->ru_stime, &r0->ru_stime);
200 break;
201 case 'U': /* user CPU time used */
202 pdeltat(fp, &r1->ru_utime, &r0->ru_utime);
203 break;
204 case 'W': /* number of swaps */
205 i = r1->ru_nswap - r0->ru_nswap;
206 (void)fprintf(fp, "%ld", i);
207 break;
208 case 'X': /* (average) shared text size */
209 (void)fprintf(fp, "%ld", t == 0 ? 0L :
210 (long)((r1->ru_ixrss - r0->ru_ixrss) / t));
211 break;
212 case 'c': /* num. involuntary context switches */
213 (void)fprintf(fp, "%ld", r1->ru_nivcsw - r0->ru_nivcsw);
214 break;
215 case 'k': /* number of signals received */
216 (void)fprintf(fp, "%ld", r1->ru_nsignals-r0->ru_nsignals);
217 break;
218 case 'r': /* socket messages received */
219 (void)fprintf(fp, "%ld", r1->ru_msgrcv - r0->ru_msgrcv);
220 break;
221 case 's': /* socket messages sent */
222 (void)fprintf(fp, "%ld", r1->ru_msgsnd - r0->ru_msgsnd);
223 break;
224 case 'w': /* num. voluntary context switches (waits) */
225 (void)fprintf(fp, "%ld", r1->ru_nvcsw - r0->ru_nvcsw);
226 break;
227 }
228 (void)fputc('\n', fp);
229 }
230
231 static void
pdeltat(FILE * fp,struct timeval * t1,struct timeval * t0)232 pdeltat(FILE *fp, struct timeval *t1, struct timeval *t0)
233 {
234 struct timeval td;
235
236 timersub(t1, t0, &td);
237 (void)fprintf(fp, "%ld.%01ld", (long)td.tv_sec,
238 (long)(td.tv_usec / 100000));
239 }
240
241 #define P2DIG(fp, i) (void)fprintf(fp, "%ld%ld", (i) / 10, (i) % 10)
242
243 #ifndef NOT_CSH
244 void
psecs(long l)245 psecs(long l)
246 {
247 long i;
248
249 i = l / 3600;
250 if (i) {
251 (void)fprintf(cshout, "%ld:", i);
252 i = l % 3600;
253 P2DIG(cshout, i / 60);
254 goto minsec;
255 }
256 i = l;
257 (void)fprintf(cshout, "%ld", i / 60);
258 minsec:
259 i %= 60;
260 (void)fputc(':', cshout);
261 P2DIG(cshout, i);
262 }
263 #endif
264
265 static void
pcsecs(FILE * fp,long l)266 pcsecs(FILE *fp, long l) /* PWP: print mm:ss.dd, l is in sec*100 */
267 {
268 long i;
269
270 i = l / 360000;
271 if (i) {
272 (void)fprintf(fp, "%ld:", i);
273 i = (l % 360000) / 100;
274 P2DIG(fp, i / 60);
275 goto minsec;
276 }
277 i = l / 100;
278 (void)fprintf(fp, "%ld", i / 60);
279 minsec:
280 i %= 60;
281 (void)fputc(':', fp);
282 P2DIG(fp, i);
283 (void)fputc('.', fp);
284 P2DIG(fp, (l % 100));
285 }
286