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 #include "sh.h"
16 #include "sh.tconst.h"
17
18 struct timeval time0;
19 static struct rusage ru0;
20
21 void ruadd(struct rusage *ru, struct rusage *ru2);
22 void prusage(struct rusage *r0, struct rusage *r1, struct timeval *e,
23 struct timeval *b);
24 void pdeltat(struct timeval *t1, struct timeval *t0);
25 void tvadd(struct timeval *tsum, struct timeval *t0);
26 void tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0);
27
28 /*
29 * C Shell - routines handling process timing and niceing
30 */
31
32 void
settimes(void)33 settimes(void)
34 {
35 struct rusage ruch;
36
37 #ifdef TRACE
38 tprintf("TRACE- settimes()\n");
39 #endif
40 (void) gettimeofday(&time0, (struct timezone *)0);
41 (void) getrusage(RUSAGE_SELF, &ru0);
42 (void) getrusage(RUSAGE_CHILDREN, &ruch);
43 ruadd(&ru0, &ruch);
44 }
45
46 /*
47 * dotime is only called if it is truly a builtin function and not a
48 * prefix to another command
49 */
50 void
dotime(void)51 dotime(void)
52 {
53 struct timeval timedol;
54 struct rusage ru1, ruch;
55
56 #ifdef TRACE
57 tprintf("TRACE- dotime()\n");
58 #endif
59 (void) getrusage(RUSAGE_SELF, &ru1);
60 (void) getrusage(RUSAGE_CHILDREN, &ruch);
61 ruadd(&ru1, &ruch);
62 (void) gettimeofday(&timedol, (struct timezone *)0);
63 prusage(&ru0, &ru1, &timedol, &time0);
64 }
65
66 /*
67 * donice is only called when it's on the line by itself or with a +- value
68 */
69 void
donice(tchar ** v)70 donice(tchar **v)
71 {
72 tchar *cp;
73 int nval;
74
75 #ifdef TRACE
76 tprintf("TRACE- donice()\n");
77 #endif
78 v++;
79 cp = *v++;
80 if (cp == 0) {
81 nval = 4;
82 } else if (*v == 0 && (cp[0] == '+' || cp[0] == '-')) {
83 nval = getn(cp);
84 }
85 (void) setpriority(PRIO_PROCESS, 0, nval);
86 }
87
88 void
ruadd(struct rusage * ru,struct rusage * ru2)89 ruadd(struct rusage *ru, struct rusage *ru2)
90 {
91 long *lp, *lp2;
92 int cnt;
93 /*
94 * The SunOS 4.x <sys/rusage.h> has ru_first and ru_last #defines
95 * as below.
96 * The SVR4/POSIX <sys/resource.h> does not have these defined for
97 * struct rusage
98 * The #defines below are here so that the original csh logic
99 * for ruadd remains clear now that there is no longer a private copy
100 * of the old <sys/resource.h>
101 */
102 #define ru_first ru_ixrss
103 #define ru_last ru_nivcsw
104
105 #ifdef TRACE
106 tprintf("TRACE- ruadd()\n");
107 #endif
108 tvadd(&ru->ru_utime, &ru2->ru_utime);
109 tvadd(&ru->ru_stime, &ru2->ru_stime);
110 if (ru2->ru_maxrss > ru->ru_maxrss) {
111 ru->ru_maxrss = ru2->ru_maxrss;
112 }
113 cnt = &ru->ru_last - &ru->ru_first + 1;
114 lp = &ru->ru_first;
115 lp2 = &ru2->ru_first;
116 do {
117 *lp++ += *lp2++;
118 } while (--cnt > 0);
119 }
120
121 void
prusage(struct rusage * r0,struct rusage * r1,struct timeval * e,struct timeval * b)122 prusage(struct rusage *r0, struct rusage *r1, struct timeval *e,
123 struct timeval *b)
124 {
125 #define pgtok(p) ((p * pgsize) / 1024)
126 static int pgsize;
127
128 time_t t =
129 (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 +
130 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 +
131 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 +
132 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000;
133 tchar *cp;
134 int i;
135 struct varent *vp = adrof(S_time);
136 int ms =
137 (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000;
138
139 #ifdef TRACE
140 tprintf("TRACE- prusage()\n");
141 #endif
142 if (pgsize == 0) {
143 pgsize = getpagesize();
144 }
145
146 cp = S_USAGEFORMAT; /* "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww" */
147 if (vp && vp->vec[0] && vp->vec[1]) {
148 cp = vp->vec[1];
149 }
150 for (; *cp; cp++) {
151 if (*cp != '%') {
152 Putchar(*cp);
153 } else if (cp[1]) {
154 switch (*++cp) {
155
156 case 'U':
157 pdeltat(&r1->ru_utime, &r0->ru_utime);
158 break;
159
160 case 'S':
161 pdeltat(&r1->ru_stime, &r0->ru_stime);
162 break;
163
164 case 'E':
165 psecs_int(ms / 100);
166 break;
167
168 case 'P':
169 printf("%d%%", (int)(t * 100 /
170 ((ms ? ms : 1))));
171 break;
172
173 case 'W':
174 i = r1->ru_nswap - r0->ru_nswap;
175 printf("%d", i);
176 break;
177
178 case 'X':
179 printf("%d", t == 0 ? 0 :
180 pgtok((r1->ru_ixrss - r0->ru_ixrss) / t));
181 break;
182
183 case 'D':
184 printf("%d", t == 0 ? 0 :
185 pgtok((r1->ru_idrss + r1->ru_isrss-
186 (r0->ru_idrss + r0->ru_isrss)) / t));
187 break;
188
189 case 'K':
190 printf("%d", t == 0 ? 0 :
191 pgtok(((r1->ru_ixrss + r1->ru_isrss +
192 r1->ru_idrss) - (r0->ru_ixrss +
193 r0->ru_idrss + r0->ru_isrss)) / t));
194 break;
195
196 case 'M':
197 printf("%d", r1->ru_maxrss / 2);
198 break;
199
200 case 'F':
201 printf("%d", r1->ru_majflt - r0->ru_majflt);
202 break;
203
204 case 'R':
205 printf("%d", r1->ru_minflt - r0->ru_minflt);
206 break;
207
208 case 'I':
209 printf("%d", r1->ru_inblock - r0->ru_inblock);
210 break;
211
212 case 'O':
213 printf("%d", r1->ru_oublock - r0->ru_oublock);
214 break;
215 }
216 }
217 }
218 Putchar('\n');
219 #undef pgtok
220 }
221
222 void
pdeltat(struct timeval * t1,struct timeval * t0)223 pdeltat(struct timeval *t1, struct timeval *t0)
224 {
225 struct timeval td;
226
227 #ifdef TRACE
228 tprintf("TRACE- pdeltat()\n");
229 #endif
230 tvsub(&td, t1, t0);
231 /* change printf formats */
232 printf("%d.%01d", td.tv_sec, td.tv_usec / 100000);
233 }
234
235 void
tvadd(struct timeval * tsum,struct timeval * t0)236 tvadd(struct timeval *tsum, struct timeval *t0)
237 {
238
239 #ifdef TRACE
240 tprintf("TRACE- tvadd()\n");
241 #endif
242 tsum->tv_sec += t0->tv_sec;
243 tsum->tv_usec += t0->tv_usec;
244 if (tsum->tv_usec > 1000000) {
245 tsum->tv_sec++;
246 tsum->tv_usec -= 1000000;
247 }
248 }
249
250 void
tvsub(struct timeval * tdiff,struct timeval * t1,struct timeval * t0)251 tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0)
252 {
253
254 #ifdef TRACE
255 tprintf("TRACE- tvsub()\n");
256 #endif
257 tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
258 tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
259 if (tdiff->tv_usec < 0) {
260 tdiff->tv_sec--;
261 tdiff->tv_usec += 1000000;
262 }
263 }
264