time.c revision 1.8
1 /* $NetBSD: time.c,v 1.8 1997/01/13 17:53:31 tls 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 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93"; 39 #else 40 static char rcsid[] = "$NetBSD: time.c,v 1.8 1997/01/13 17:53:31 tls Exp $"; 41 #endif 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #if __STDC__ 46 # include <stdarg.h> 47 #else 48 # include <varargs.h> 49 #endif 50 51 #include "csh.h" 52 #include "extern.h" 53 54 /* 55 * C Shell - routines handling process timing and niceing 56 */ 57 static void pdeltat __P((struct timeval *, struct timeval *)); 58 59 void 60 settimes() 61 { 62 struct rusage ruch; 63 64 (void) gettimeofday(&time0, NULL); 65 (void) getrusage(RUSAGE_SELF, &ru0); 66 (void) getrusage(RUSAGE_CHILDREN, &ruch); 67 ruadd(&ru0, &ruch); 68 } 69 70 /* 71 * dotime is only called if it is truly a builtin function and not a 72 * prefix to another command 73 */ 74 void 75 /*ARGSUSED*/ 76 dotime(v, t) 77 Char **v; 78 struct command *t; 79 { 80 struct timeval timedol; 81 struct rusage ru1, ruch; 82 83 (void) getrusage(RUSAGE_SELF, &ru1); 84 (void) getrusage(RUSAGE_CHILDREN, &ruch); 85 ruadd(&ru1, &ruch); 86 (void) gettimeofday(&timedol, NULL); 87 prusage(&ru0, &ru1, &timedol, &time0); 88 } 89 90 /* 91 * donice is only called when it on the line by itself or with a +- value 92 */ 93 void 94 /*ARGSUSED*/ 95 donice(v, t) 96 Char **v; 97 struct command *t; 98 { 99 Char *cp; 100 int nval = 0; 101 102 v++, cp = *v++; 103 if (cp == 0) 104 nval = 4; 105 else if (*v == 0 && any("+-", cp[0])) 106 nval = getn(cp); 107 (void) setpriority(PRIO_PROCESS, 0, nval); 108 } 109 110 void 111 ruadd(ru, ru2) 112 struct rusage *ru, *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(r0, r1, e, b) 136 struct rusage *r0, *r1; 137 struct timeval *e, *b; 138 { 139 time_t t = 140 (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 141 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 142 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 143 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 144 char *cp; 145 long i; 146 struct varent *vp = adrof(STRtime); 147 148 int ms = 149 (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000; 150 151 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 152 153 if (vp && vp->vec[0] && vp->vec[1]) 154 cp = short2str(vp->vec[1]); 155 156 for (; *cp; cp++) 157 if (*cp != '%') 158 (void) fputc(*cp, cshout); 159 else if (cp[1]) 160 switch (*++cp) { 161 162 case 'U': /* user CPU time used */ 163 pdeltat(&r1->ru_utime, &r0->ru_utime); 164 break; 165 166 case 'S': /* system CPU time used */ 167 pdeltat(&r1->ru_stime, &r0->ru_stime); 168 break; 169 170 case 'E': /* elapsed (wall-clock) time */ 171 pcsecs((long) ms); 172 break; 173 174 case 'P': /* percent time spent running */ 175 /* check if it did not run at all */ 176 i = (ms == 0) ? 0 : (t * 1000 / ms); 177 /* nn.n% */ 178 (void) fprintf(cshout, "%ld.%01ld%%", i / 10, i % 10); 179 break; 180 181 case 'W': /* number of swaps */ 182 i = r1->ru_nswap - r0->ru_nswap; 183 (void) fprintf(cshout, "%ld", i); 184 break; 185 186 case 'X': /* (average) shared text size */ 187 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 188 (r1->ru_ixrss - r0->ru_ixrss) / t); 189 break; 190 191 case 'D': /* (average) unshared data size */ 192 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 193 (r1->ru_idrss + r1->ru_isrss - 194 (r0->ru_idrss + r0->ru_isrss)) / t); 195 break; 196 197 case 'K': /* (average) total data memory used */ 198 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 199 ((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) - 200 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t); 201 break; 202 203 case 'M': /* max. Resident Set Size */ 204 (void) fprintf(cshout, "%ld", r1->ru_maxrss / 2L); 205 break; 206 207 case 'F': /* page faults */ 208 (void) fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt); 209 break; 210 211 case 'R': /* page reclaims */ 212 (void) fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt); 213 break; 214 215 case 'I': /* FS blocks in */ 216 (void) fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock); 217 break; 218 219 case 'O': /* FS blocks out */ 220 (void) fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock); 221 break; 222 223 case 'r': /* socket messages recieved */ 224 (void) fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 225 break; 226 227 case 's': /* socket messages sent */ 228 (void) fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 229 break; 230 231 case 'k': /* number of signals recieved */ 232 (void) fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals); 233 break; 234 235 case 'w': /* num. voluntary context switches (waits) */ 236 (void) fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 237 break; 238 239 case 'c': /* num. involuntary context switches */ 240 (void) fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 241 break; 242 } 243 (void) fputc('\n', cshout); 244 } 245 246 static void 247 pdeltat(t1, t0) 248 struct timeval *t1, *t0; 249 { 250 struct timeval td; 251 252 timersub(t1, t0, &td); 253 (void) fprintf(cshout, "%d.%01d", td.tv_sec, td.tv_usec / 100000); 254 } 255 256 #define P2DIG(i) (void) fprintf(cshout, "%d%d", (i) / 10, (i) % 10) 257 258 void 259 psecs(l) 260 long l; 261 { 262 int i; 263 264 i = l / 3600; 265 if (i) { 266 (void) fprintf(cshout, "%d:", i); 267 i = l % 3600; 268 P2DIG(i / 60); 269 goto minsec; 270 } 271 i = l; 272 (void) fprintf(cshout, "%d", i / 60); 273 minsec: 274 i %= 60; 275 (void) fputc(':', cshout); 276 P2DIG(i); 277 } 278 279 void 280 pcsecs(l) /* PWP: print mm:ss.dd, l is in sec*100 */ 281 long l; 282 { 283 int i; 284 285 i = l / 360000; 286 if (i) { 287 (void) fprintf(cshout, "%d:", i); 288 i = (l % 360000) / 100; 289 P2DIG(i / 60); 290 goto minsec; 291 } 292 i = l / 100; 293 (void) fprintf(cshout, "%d", i / 60); 294 minsec: 295 i %= 60; 296 (void) fputc(':', cshout); 297 P2DIG(i); 298 (void) fputc('.', cshout); 299 P2DIG((int) (l % 100)); 300 } 301
Indexes created Tue Sep 23 14:10:03 GMT 2025