time.c revision 1.9
1 /* $NetBSD: time.c,v 1.9 1997/07/04 21:24:11 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. 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 1.9 1997/07/04 21:24:11 christos 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 60 void 61 settimes() 62 { 63 struct rusage ruch; 64 65 (void) gettimeofday(&time0, NULL); 66 (void) getrusage(RUSAGE_SELF, &ru0); 67 (void) getrusage(RUSAGE_CHILDREN, &ruch); 68 ruadd(&ru0, &ruch); 69 } 70 71 /* 72 * dotime is only called if it is truly a builtin function and not a 73 * prefix to another command 74 */ 75 void 76 /*ARGSUSED*/ 77 dotime(v, t) 78 Char **v; 79 struct command *t; 80 { 81 struct timeval timedol; 82 struct rusage ru1, ruch; 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(v, t) 97 Char **v; 98 struct command *t; 99 { 100 Char *cp; 101 int nval = 0; 102 103 v++, 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(ru, ru2) 113 struct rusage *ru, *ru2; 114 { 115 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime); 116 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime); 117 if (ru2->ru_maxrss > ru->ru_maxrss) 118 ru->ru_maxrss = ru2->ru_maxrss; 119 120 ru->ru_ixrss += ru2->ru_ixrss; 121 ru->ru_idrss += ru2->ru_idrss; 122 ru->ru_isrss += ru2->ru_isrss; 123 ru->ru_minflt += ru2->ru_minflt; 124 ru->ru_majflt += ru2->ru_majflt; 125 ru->ru_nswap += ru2->ru_nswap; 126 ru->ru_inblock += ru2->ru_inblock; 127 ru->ru_oublock += ru2->ru_oublock; 128 ru->ru_msgsnd += ru2->ru_msgsnd; 129 ru->ru_msgrcv += ru2->ru_msgrcv; 130 ru->ru_nsignals += ru2->ru_nsignals; 131 ru->ru_nvcsw += ru2->ru_nvcsw; 132 ru->ru_nivcsw += ru2->ru_nivcsw; 133 } 134 135 void 136 prusage(r0, r1, e, b) 137 struct rusage *r0, *r1; 138 struct timeval *e, *b; 139 { 140 time_t t = 141 (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 142 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 143 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 144 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 145 char *cp; 146 long i; 147 struct varent *vp = adrof(STRtime); 148 149 int ms = 150 (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000; 151 152 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 153 154 if (vp && vp->vec[0] && vp->vec[1]) 155 cp = short2str(vp->vec[1]); 156 157 for (; *cp; cp++) 158 if (*cp != '%') 159 (void) fputc(*cp, cshout); 160 else if (cp[1]) 161 switch (*++cp) { 162 163 case 'U': /* user CPU time used */ 164 pdeltat(&r1->ru_utime, &r0->ru_utime); 165 break; 166 167 case 'S': /* system CPU time used */ 168 pdeltat(&r1->ru_stime, &r0->ru_stime); 169 break; 170 171 case 'E': /* elapsed (wall-clock) time */ 172 pcsecs((long) ms); 173 break; 174 175 case 'P': /* percent time spent running */ 176 /* check if it did not run at all */ 177 i = (ms == 0) ? 0 : (t * 1000 / ms); 178 /* nn.n% */ 179 (void) fprintf(cshout, "%ld.%01ld%%", i / 10, i % 10); 180 break; 181 182 case 'W': /* number of swaps */ 183 i = r1->ru_nswap - r0->ru_nswap; 184 (void) fprintf(cshout, "%ld", i); 185 break; 186 187 case 'X': /* (average) shared text size */ 188 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 189 (r1->ru_ixrss - r0->ru_ixrss) / t); 190 break; 191 192 case 'D': /* (average) unshared data size */ 193 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 194 (r1->ru_idrss + r1->ru_isrss - 195 (r0->ru_idrss + r0->ru_isrss)) / t); 196 break; 197 198 case 'K': /* (average) total data memory used */ 199 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 200 ((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) - 201 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t); 202 break; 203 204 case 'M': /* max. Resident Set Size */ 205 (void) fprintf(cshout, "%ld", r1->ru_maxrss / 2L); 206 break; 207 208 case 'F': /* page faults */ 209 (void) fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt); 210 break; 211 212 case 'R': /* page reclaims */ 213 (void) fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt); 214 break; 215 216 case 'I': /* FS blocks in */ 217 (void) fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock); 218 break; 219 220 case 'O': /* FS blocks out */ 221 (void) fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock); 222 break; 223 224 case 'r': /* socket messages recieved */ 225 (void) fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 226 break; 227 228 case 's': /* socket messages sent */ 229 (void) fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 230 break; 231 232 case 'k': /* number of signals recieved */ 233 (void) fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals); 234 break; 235 236 case 'w': /* num. voluntary context switches (waits) */ 237 (void) fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 238 break; 239 240 case 'c': /* num. involuntary context switches */ 241 (void) fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 242 break; 243 } 244 (void) fputc('\n', cshout); 245 } 246 247 static void 248 pdeltat(t1, t0) 249 struct timeval *t1, *t0; 250 { 251 struct timeval td; 252 253 timersub(t1, t0, &td); 254 (void) fprintf(cshout, "%ld.%01ld", (long) td.tv_sec, 255 (long) (td.tv_usec / 100000)); 256 } 257 258 #define P2DIG(i) (void) fprintf(cshout, "%d%d", (i) / 10, (i) % 10) 259 260 void 261 psecs(l) 262 long l; 263 { 264 int i; 265 266 i = l / 3600; 267 if (i) { 268 (void) fprintf(cshout, "%d:", i); 269 i = l % 3600; 270 P2DIG(i / 60); 271 goto minsec; 272 } 273 i = l; 274 (void) fprintf(cshout, "%d", i / 60); 275 minsec: 276 i %= 60; 277 (void) fputc(':', cshout); 278 P2DIG(i); 279 } 280 281 void 282 pcsecs(l) /* PWP: print mm:ss.dd, l is in sec*100 */ 283 long l; 284 { 285 int i; 286 287 i = l / 360000; 288 if (i) { 289 (void) fprintf(cshout, "%d:", i); 290 i = (l % 360000) / 100; 291 P2DIG(i / 60); 292 goto minsec; 293 } 294 i = l / 100; 295 (void) fprintf(cshout, "%d", i / 60); 296 minsec: 297 i %= 60; 298 (void) fputc(':', cshout); 299 P2DIG(i); 300 (void) fputc('.', cshout); 301 P2DIG((int) (l % 100)); 302 } 303
Indexes created Tue Sep 23 22:09:46 GMT 2025