1 /*
2 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
7 /* All Rights Reserved */
8
9 /*
10 * Copyright (c) 1980 Regents of the University of California.
11 * All rights reserved. The Berkeley Software License Agreement
12 * specifies the terms and conditions for redistribution.
13 */
14
15 #pragma ident "%Z%%M% %I% %E% SMI"
16
17 #include "sh.h"
18 #include "sh.tconst.h"
19
20 void ruadd(struct rusage *ru, struct rusage *ru2);
21 void prusage(struct rusage *r0, struct rusage *r1, struct timeval *e,
22 struct timeval *b);
23 void pdeltat(struct timeval *t1, struct timeval *t0);
24 void tvadd(struct timeval *tsum, struct timeval *t0);
25 void tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0);
26
27 /*
28 * C Shell - routines handling process timing and niceing
29 */
30
31 void
settimes(void)32 settimes(void)
33 {
34 struct rusage ruch;
35
36 #ifdef TRACE
37 tprintf("TRACE- settimes()\n");
38 #endif
39 (void) gettimeofday(&time0, (struct timezone *)0);
40 (void) getrusage(RUSAGE_SELF, &ru0);
41 (void) getrusage(RUSAGE_CHILDREN, &ruch);
42 ruadd(&ru0, &ruch);
43 }
44
45 /*
46 * dotime is only called if it is truly a builtin function and not a
47 * prefix to another command
48 */
49 void
dotime(void)50 dotime(void)
51 {
52 struct timeval timedol;
53 struct rusage ru1, ruch;
54
55 #ifdef TRACE
56 tprintf("TRACE- dotime()\n");
57 #endif
58 (void) getrusage(RUSAGE_SELF, &ru1);
59 (void) getrusage(RUSAGE_CHILDREN, &ruch);
60 ruadd(&ru1, &ruch);
61 (void) gettimeofday(&timedol, (struct timezone *)0);
62 prusage(&ru0, &ru1, &timedol, &time0);
63 }
64
65 /*
66 * donice is only called when it's on the line by itself or with a +- value
67 */
68 void
donice(tchar ** v)69 donice(tchar **v)
70 {
71 tchar *cp;
72 int nval;
73
74 #ifdef TRACE
75 tprintf("TRACE- donice()\n");
76 #endif
77 v++;
78 cp = *v++;
79 if (cp == 0) {
80 nval = 4;
81 } else if (*v == 0 && (cp[0] == '+' || cp[0] == '-')) {
82 nval = getn(cp);
83 }
84 (void) setpriority(PRIO_PROCESS, 0, nval);
85 }
86
87 void
ruadd(struct rusage * ru,struct rusage * ru2)88 ruadd(struct rusage *ru, struct rusage *ru2)
89 {
90 long *lp, *lp2;
91 int cnt;
92 /*
93 * The SunOS 4.x <sys/rusage.h> has ru_first and ru_last #defines
94 * as below.
95 * The SVR4/POSIX <sys/resource.h> does not have these defined for
96 * struct rusage
97 * The #defines below are here so that the original csh logic
98 * for ruadd remains clear now that there is no longer a private copy
99 * of the old <sys/resource.h>
100 */
101 #define ru_first ru_ixrss
102 #define ru_last ru_nivcsw
103
104 #ifdef TRACE
105 tprintf("TRACE- ruadd()\n");
106 #endif
107 tvadd(&ru->ru_utime, &ru2->ru_utime);
108 tvadd(&ru->ru_stime, &ru2->ru_stime);
109 if (ru2->ru_maxrss > ru->ru_maxrss) {
110 ru->ru_maxrss = ru2->ru_maxrss;
111 }
112 cnt = &ru->ru_last - &ru->ru_first + 1;
113 lp = &ru->ru_first;
114 lp2 = &ru2->ru_first;
115 do {
116 *lp++ += *lp2++;
117 } while (--cnt > 0);
118 }
119
120 void
prusage(struct rusage * r0,struct rusage * r1,struct timeval * e,struct timeval * b)121 prusage(struct rusage *r0, struct rusage *r1, struct timeval *e,
122 struct timeval *b)
123 {
124 #define pgtok(p) ((p * pgsize) / 1024)
125 static int pgsize;
126
127 time_t t =
128 (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 +
129 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 +
130 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 +
131 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000;
132 tchar *cp;
133 int i;
134 struct varent *vp = adrof(S_time);
135 int ms =
136 (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000;
137
138 #ifdef TRACE
139 tprintf("TRACE- prusage()\n");
140 #endif
141 if (pgsize == 0) {
142 pgsize = getpagesize();
143 }
144
145 cp = S_USAGEFORMAT; /* "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww" */
146 if (vp && vp->vec[0] && vp->vec[1]) {
147 cp = vp->vec[1];
148 }
149 for (; *cp; cp++) {
150 if (*cp != '%') {
151 Putchar(*cp);
152 } else if (cp[1]) {
153 switch (*++cp) {
154
155 case 'U':
156 pdeltat(&r1->ru_utime, &r0->ru_utime);
157 break;
158
159 case 'S':
160 pdeltat(&r1->ru_stime, &r0->ru_stime);
161 break;
162
163 case 'E':
164 psecs_int(ms / 100);
165 break;
166
167 case 'P':
168 printf("%d%%", (int)(t * 100 /
169 ((ms ? ms : 1))));
170 break;
171
172 case 'W':
173 i = r1->ru_nswap - r0->ru_nswap;
174 printf("%d", i);
175 break;
176
177 case 'X':
178 printf("%d", t == 0 ? 0 :
179 pgtok((r1->ru_ixrss - r0->ru_ixrss) / t));
180 break;
181
182 case 'D':
183 printf("%d", t == 0 ? 0 :
184 pgtok((r1->ru_idrss + r1->ru_isrss-
185 (r0->ru_idrss + r0->ru_isrss)) / t));
186 break;
187
188 case 'K':
189 printf("%d", t == 0 ? 0 :
190 pgtok(((r1->ru_ixrss + r1->ru_isrss +
191 r1->ru_idrss) - (r0->ru_ixrss +
192 r0->ru_idrss + r0->ru_isrss)) / t));
193 break;
194
195 case 'M':
196 printf("%d", r1->ru_maxrss / 2);
197 break;
198
199 case 'F':
200 printf("%d", r1->ru_majflt - r0->ru_majflt);
201 break;
202
203 case 'R':
204 printf("%d", r1->ru_minflt - r0->ru_minflt);
205 break;
206
207 case 'I':
208 printf("%d", r1->ru_inblock - r0->ru_inblock);
209 break;
210
211 case 'O':
212 printf("%d", r1->ru_oublock - r0->ru_oublock);
213 break;
214 }
215 }
216 }
217 Putchar('\n');
218 #undef pgtok
219 }
220
221 void
pdeltat(struct timeval * t1,struct timeval * t0)222 pdeltat(struct timeval *t1, struct timeval *t0)
223 {
224 struct timeval td;
225
226 #ifdef TRACE
227 tprintf("TRACE- pdeltat()\n");
228 #endif
229 tvsub(&td, t1, t0);
230 /* change printf formats */
231 printf("%d.%01d", td.tv_sec, td.tv_usec / 100000);
232 }
233
234 void
tvadd(struct timeval * tsum,struct timeval * t0)235 tvadd(struct timeval *tsum, struct timeval *t0)
236 {
237
238 #ifdef TRACE
239 tprintf("TRACE- tvadd()\n");
240 #endif
241 tsum->tv_sec += t0->tv_sec;
242 tsum->tv_usec += t0->tv_usec;
243 if (tsum->tv_usec > 1000000) {
244 tsum->tv_sec++;
245 tsum->tv_usec -= 1000000;
246 }
247 }
248
249 void
tvsub(struct timeval * tdiff,struct timeval * t1,struct timeval * t0)250 tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0)
251 {
252
253 #ifdef TRACE
254 tprintf("TRACE- tvsub()\n");
255 #endif
256 tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
257 tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
258 if (tdiff->tv_usec < 0) {
259 tdiff->tv_sec--;
260 tdiff->tv_usec += 1000000;
261 }
262 }
263