time.c revision 1.11
1 /* $NetBSD: time.c,v 1.11 2001/06/12 15:17:10 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 1.11 2001/06/12 15:17:10 wiz Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 #if __STDC__ 47 # include <stdarg.h> 48 #else 49 # include <varargs.h> 50 #endif 51 52 #include "csh.h" 53 #include "extern.h" 54 55 /* 56 * C Shell - routines handling process timing and niceing 57 */ 58 static void pdeltat __P((struct timeval *, struct timeval *)); 59 extern char * strpct __P((u_long num, u_long denom, u_int digits)); 60 61 void 62 settimes() 63 { 64 struct rusage ruch; 65 66 (void) gettimeofday(&time0, NULL); 67 (void) getrusage(RUSAGE_SELF, &ru0); 68 (void) getrusage(RUSAGE_CHILDREN, &ruch); 69 ruadd(&ru0, &ruch); 70 } 71 72 /* 73 * dotime is only called if it is truly a builtin function and not a 74 * prefix to another command 75 */ 76 void 77 /*ARGSUSED*/ 78 dotime(v, t) 79 Char **v; 80 struct command *t; 81 { 82 struct timeval timedol; 83 struct rusage ru1, ruch; 84 85 (void) getrusage(RUSAGE_SELF, &ru1); 86 (void) getrusage(RUSAGE_CHILDREN, &ruch); 87 ruadd(&ru1, &ruch); 88 (void) gettimeofday(&timedol, NULL); 89 prusage(&ru0, &ru1, &timedol, &time0); 90 } 91 92 /* 93 * donice is only called when it on the line by itself or with a +- value 94 */ 95 void 96 /*ARGSUSED*/ 97 donice(v, t) 98 Char **v; 99 struct command *t; 100 { 101 Char *cp; 102 int nval = 0; 103 104 v++, cp = *v++; 105 if (cp == 0) 106 nval = 4; 107 else if (*v == 0 && any("+-", cp[0])) 108 nval = getn(cp); 109 (void) setpriority(PRIO_PROCESS, 0, nval); 110 } 111 112 void 113 ruadd(ru, ru2) 114 struct rusage *ru, *ru2; 115 { 116 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime); 117 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime); 118 if (ru2->ru_maxrss > ru->ru_maxrss) 119 ru->ru_maxrss = ru2->ru_maxrss; 120 121 ru->ru_ixrss += ru2->ru_ixrss; 122 ru->ru_idrss += ru2->ru_idrss; 123 ru->ru_isrss += ru2->ru_isrss; 124 ru->ru_minflt += ru2->ru_minflt; 125 ru->ru_majflt += ru2->ru_majflt; 126 ru->ru_nswap += ru2->ru_nswap; 127 ru->ru_inblock += ru2->ru_inblock; 128 ru->ru_oublock += ru2->ru_oublock; 129 ru->ru_msgsnd += ru2->ru_msgsnd; 130 ru->ru_msgrcv += ru2->ru_msgrcv; 131 ru->ru_nsignals += ru2->ru_nsignals; 132 ru->ru_nvcsw += ru2->ru_nvcsw; 133 ru->ru_nivcsw += ru2->ru_nivcsw; 134 } 135 136 void 137 prusage(r0, r1, e, b) 138 struct rusage *r0, *r1; 139 struct timeval *e, *b; 140 { 141 time_t t = 142 (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 143 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 144 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 145 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 146 char *cp; 147 long i; 148 struct varent *vp = adrof(STRtime); 149 150 int ms = 151 (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000; 152 153 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 154 155 if (vp && vp->vec[0] && vp->vec[1]) 156 cp = short2str(vp->vec[1]); 157 158 for (; *cp; cp++) 159 if (*cp != '%') 160 (void) fputc(*cp, cshout); 161 else if (cp[1]) 162 switch (*++cp) { 163 164 case 'U': /* user CPU time used */ 165 pdeltat(&r1->ru_utime, &r0->ru_utime); 166 break; 167 168 case 'S': /* system CPU time used */ 169 pdeltat(&r1->ru_stime, &r0->ru_stime); 170 break; 171 172 case 'E': /* elapsed (wall-clock) time */ 173 pcsecs((long) ms); 174 break; 175 176 case 'P': /* percent time spent running */ 177 /* check if it did not run at all */ 178 if (ms == 0) { 179 (void) fputs("0.0%", cshout); 180 } else { 181 (void) fputs(strpct((ulong)t, (ulong)ms, 1), cshout); 182 } 183 break; 184 185 case 'W': /* number of swaps */ 186 i = r1->ru_nswap - r0->ru_nswap; 187 (void) fprintf(cshout, "%ld", i); 188 break; 189 190 case 'X': /* (average) shared text size */ 191 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 192 (r1->ru_ixrss - r0->ru_ixrss) / t); 193 break; 194 195 case 'D': /* (average) unshared data size */ 196 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 197 (r1->ru_idrss + r1->ru_isrss - 198 (r0->ru_idrss + r0->ru_isrss)) / t); 199 break; 200 201 case 'K': /* (average) total data memory used */ 202 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 203 ((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) - 204 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t); 205 break; 206 207 case 'M': /* max. Resident Set Size */ 208 (void) fprintf(cshout, "%ld", r1->ru_maxrss / 2L); 209 break; 210 211 case 'F': /* page faults */ 212 (void) fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt); 213 break; 214 215 case 'R': /* page reclaims */ 216 (void) fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt); 217 break; 218 219 case 'I': /* FS blocks in */ 220 (void) fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock); 221 break; 222 223 case 'O': /* FS blocks out */ 224 (void) fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock); 225 break; 226 227 case 'r': /* socket messages received */ 228 (void) fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 229 break; 230 231 case 's': /* socket messages sent */ 232 (void) fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 233 break; 234 235 case 'k': /* number of signals received */ 236 (void) fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals); 237 break; 238 239 case 'w': /* num. voluntary context switches (waits) */ 240 (void) fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 241 break; 242 243 case 'c': /* num. involuntary context switches */ 244 (void) fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 245 break; 246 } 247 (void) fputc('\n', cshout); 248 } 249 250 static void 251 pdeltat(t1, t0) 252 struct timeval *t1, *t0; 253 { 254 struct timeval td; 255 256 timersub(t1, t0, &td); 257 (void) fprintf(cshout, "%ld.%01ld", (long) td.tv_sec, 258 (long) (td.tv_usec / 100000)); 259 } 260 261 #define P2DIG(i) (void) fprintf(cshout, "%d%d", (i) / 10, (i) % 10) 262 263 void 264 psecs(l) 265 long l; 266 { 267 int i; 268 269 i = l / 3600; 270 if (i) { 271 (void) fprintf(cshout, "%d:", i); 272 i = l % 3600; 273 P2DIG(i / 60); 274 goto minsec; 275 } 276 i = l; 277 (void) fprintf(cshout, "%d", i / 60); 278 minsec: 279 i %= 60; 280 (void) fputc(':', cshout); 281 P2DIG(i); 282 } 283 284 void 285 pcsecs(l) /* PWP: print mm:ss.dd, l is in sec*100 */ 286 long l; 287 { 288 int i; 289 290 i = l / 360000; 291 if (i) { 292 (void) fprintf(cshout, "%d:", i); 293 i = (l % 360000) / 100; 294 P2DIG(i / 60); 295 goto minsec; 296 } 297 i = l / 100; 298 (void) fprintf(cshout, "%d", i / 60); 299 minsec: 300 i %= 60; 301 (void) fputc(':', cshout); 302 P2DIG(i); 303 (void) fputc('.', cshout); 304 P2DIG((int) (l % 100)); 305 } 306
Indexes created Tue Sep 23 07:09:52 GMT 2025