time.c revision 1.12
1 /* $NetBSD: time.c,v 1.12 2001/09/14 14:04:01 wiz 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93"; 40 #else 41 __RCSID("$NetBSD: time.c,v 1.12 2001/09/14 14:04:01 wiz Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 47 #if __STDC__ 48 # include <stdarg.h> 49 #else 50 # include <varargs.h> 51 #endif 52 53 #include "csh.h" 54 #include "extern.h" 55 56 /* 57 * C Shell - routines handling process timing and niceing 58 */ 59 static void pdeltat(struct timeval *, struct timeval *); 60 extern char *strpct(u_long num, u_long denom, u_int digits); 61 62 void 63 settimes(void) 64 { 65 struct rusage ruch; 66 67 (void)gettimeofday(&time0, NULL); 68 (void)getrusage(RUSAGE_SELF, &ru0); 69 (void)getrusage(RUSAGE_CHILDREN, &ruch); 70 ruadd(&ru0, &ruch); 71 } 72 73 /* 74 * dotime is only called if it is truly a builtin function and not a 75 * prefix to another command 76 */ 77 void 78 /*ARGSUSED*/ 79 dotime(Char **v, struct command *t) 80 { 81 struct rusage ru1, ruch; 82 struct timeval timedol; 83 84 (void)getrusage(RUSAGE_SELF, &ru1); 85 (void)getrusage(RUSAGE_CHILDREN, &ruch); 86 ruadd(&ru1, &ruch); 87 (void)gettimeofday(&timedol, NULL); 88 prusage(&ru0, &ru1, &timedol, &time0); 89 } 90 91 /* 92 * donice is only called when it on the line by itself or with a +- value 93 */ 94 void 95 /*ARGSUSED*/ 96 donice(Char **v, struct command *t) 97 { 98 Char *cp; 99 int nval; 100 101 nval = 0; 102 v++; 103 cp = *v++; 104 if (cp == 0) 105 nval = 4; 106 else if (*v == 0 && any("+-", cp[0])) 107 nval = getn(cp); 108 (void)setpriority(PRIO_PROCESS, 0, nval); 109 } 110 111 void 112 ruadd(struct rusage *ru, struct rusage *ru2) 113 { 114 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime); 115 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime); 116 if (ru2->ru_maxrss > ru->ru_maxrss) 117 ru->ru_maxrss = ru2->ru_maxrss; 118 119 ru->ru_ixrss += ru2->ru_ixrss; 120 ru->ru_idrss += ru2->ru_idrss; 121 ru->ru_isrss += ru2->ru_isrss; 122 ru->ru_minflt += ru2->ru_minflt; 123 ru->ru_majflt += ru2->ru_majflt; 124 ru->ru_nswap += ru2->ru_nswap; 125 ru->ru_inblock += ru2->ru_inblock; 126 ru->ru_oublock += ru2->ru_oublock; 127 ru->ru_msgsnd += ru2->ru_msgsnd; 128 ru->ru_msgrcv += ru2->ru_msgrcv; 129 ru->ru_nsignals += ru2->ru_nsignals; 130 ru->ru_nvcsw += ru2->ru_nvcsw; 131 ru->ru_nivcsw += ru2->ru_nivcsw; 132 } 133 134 void 135 prusage(struct rusage *r0, struct rusage *r1, struct timeval *e, 136 struct timeval *b) 137 { 138 struct varent *vp; 139 char *cp; 140 long i; 141 time_t t; 142 int ms; 143 144 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 145 ms = (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000; 146 t = (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 147 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 148 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 149 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 150 vp = adrof(STRtime); 151 152 if (vp && vp->vec[0] && vp->vec[1]) 153 cp = short2str(vp->vec[1]); 154 155 for (; *cp; cp++) 156 if (*cp != '%') 157 (void) fputc(*cp, cshout); 158 else if (cp[1]) 159 switch (*++cp) { 160 case 'D': /* (average) unshared data size */ 161 (void)fprintf(cshout, "%ld", t == 0 ? 0L : 162 (r1->ru_idrss + r1->ru_isrss - 163 (r0->ru_idrss + r0->ru_isrss)) / t); 164 break; 165 case 'E': /* elapsed (wall-clock) time */ 166 pcsecs((long) ms); 167 break; 168 case 'F': /* page faults */ 169 (void)fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt); 170 break; 171 case 'I': /* FS blocks in */ 172 (void)fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock); 173 break; 174 case 'K': /* (average) total data memory used */ 175 (void)fprintf(cshout, "%ld", t == 0 ? 0L : 176 ((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) - 177 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t); 178 break; 179 case 'M': /* max. Resident Set Size */ 180 (void)fprintf(cshout, "%ld", r1->ru_maxrss / 2L); 181 break; 182 case 'O': /* FS blocks out */ 183 (void)fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock); 184 break; 185 case 'P': /* percent time spent running */ 186 /* check if it did not run at all */ 187 if (ms == 0) { 188 (void)fputs("0.0%", cshout); 189 } else { 190 (void)fputs(strpct((ulong)t, (ulong)ms, 1), cshout); 191 } 192 break; 193 case 'R': /* page reclaims */ 194 (void)fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt); 195 break; 196 case 'S': /* system CPU time used */ 197 pdeltat(&r1->ru_stime, &r0->ru_stime); 198 break; 199 case 'U': /* user CPU time used */ 200 pdeltat(&r1->ru_utime, &r0->ru_utime); 201 break; 202 case 'W': /* number of swaps */ 203 i = r1->ru_nswap - r0->ru_nswap; 204 (void)fprintf(cshout, "%ld", i); 205 break; 206 case 'X': /* (average) shared text size */ 207 (void)fprintf(cshout, "%ld", t == 0 ? 0L : 208 (r1->ru_ixrss - r0->ru_ixrss) / t); 209 break; 210 case 'c': /* num. involuntary context switches */ 211 (void)fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 212 break; 213 case 'k': /* number of signals received */ 214 (void)fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals); 215 break; 216 case 'r': /* socket messages received */ 217 (void)fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 218 break; 219 case 's': /* socket messages sent */ 220 (void)fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 221 break; 222 case 'w': /* num. voluntary context switches (waits) */ 223 (void)fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 224 break; 225 } 226 (void)fputc('\n', cshout); 227 } 228 229 static void 230 pdeltat(struct timeval *t1, struct timeval *t0) 231 { 232 struct timeval td; 233 234 timersub(t1, t0, &td); 235 (void)fprintf(cshout, "%ld.%01ld", (long)td.tv_sec, 236 (long)(td.tv_usec / 100000)); 237 } 238 239 #define P2DIG(i) (void)fprintf(cshout, "%d%d", (i) / 10, (i) % 10) 240 241 void 242 psecs(long l) 243 { 244 int i; 245 246 i = l / 3600; 247 if (i) { 248 (void)fprintf(cshout, "%d:", i); 249 i = l % 3600; 250 P2DIG(i / 60); 251 goto minsec; 252 } 253 i = l; 254 (void)fprintf(cshout, "%d", i / 60); 255 minsec: 256 i %= 60; 257 (void)fputc(':', cshout); 258 P2DIG(i); 259 } 260 261 void 262 pcsecs(long l) /* PWP: print mm:ss.dd, l is in sec*100 */ 263 { 264 int i; 265 266 i = l / 360000; 267 if (i) { 268 (void)fprintf(cshout, "%d:", i); 269 i = (l % 360000) / 100; 270 P2DIG(i / 60); 271 goto minsec; 272 } 273 i = l / 100; 274 (void)fprintf(cshout, "%d", i / 60); 275 minsec: 276 i %= 60; 277 (void)fputc(':', cshout); 278 P2DIG(i); 279 (void)fputc('.', cshout); 280 P2DIG((int) (l % 100)); 281 } 282
Indexes created Wed Sep 24 15:09:51 GMT 2025