time.c revision 1.9
1/* $OpenBSD: time.c,v 1.9 2003/06/02 23:32:07 millert Exp $ */ 2/* $NetBSD: time.c,v 1.7 1995/03/21 13:55:25 mycroft Exp $ */ 3 4/*- 5 * Copyright (c) 1980, 1991, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#ifndef lint 34#if 0 35static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93"; 36#else 37static char rcsid[] = "$OpenBSD: time.c,v 1.9 2003/06/02 23:32:07 millert Exp $"; 38#endif 39#endif /* not lint */ 40 41#include <sys/types.h> 42#include <stdarg.h> 43 44#include "csh.h" 45#include "extern.h" 46 47/* 48 * C Shell - routines handling process timing and niceing 49 */ 50static void pdeltat(struct timeval *, struct timeval *); 51 52void 53settimes() 54{ 55 struct rusage ruch; 56 57 (void) gettimeofday(&time0, NULL); 58 (void) getrusage(RUSAGE_SELF, &ru0); 59 (void) getrusage(RUSAGE_CHILDREN, &ruch); 60 ruadd(&ru0, &ruch); 61} 62 63/* 64 * dotime is only called if it is truly a builtin function and not a 65 * prefix to another command 66 */ 67void 68/*ARGSUSED*/ 69dotime(v, t) 70 Char **v; 71 struct command *t; 72{ 73 struct timeval timedol; 74 struct rusage ru1, ruch; 75 76 (void) getrusage(RUSAGE_SELF, &ru1); 77 (void) getrusage(RUSAGE_CHILDREN, &ruch); 78 ruadd(&ru1, &ruch); 79 (void) gettimeofday(&timedol, NULL); 80 prusage(&ru0, &ru1, &timedol, &time0); 81} 82 83/* 84 * donice is only called when it on the line by itself or with a +- value 85 */ 86void 87/*ARGSUSED*/ 88donice(v, t) 89 Char **v; 90 struct command *t; 91{ 92 register Char *cp; 93 int nval = 0; 94 95 v++, cp = *v++; 96 if (cp == 0) 97 nval = 4; 98 else if (*v == 0 && any("+-", cp[0])) 99 nval = getn(cp); 100 (void) setpriority(PRIO_PROCESS, 0, nval); 101} 102 103void 104ruadd(ru, ru2) 105 register struct rusage *ru, *ru2; 106{ 107 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime); 108 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime); 109 if (ru2->ru_maxrss > ru->ru_maxrss) 110 ru->ru_maxrss = ru2->ru_maxrss; 111 112 ru->ru_ixrss += ru2->ru_ixrss; 113 ru->ru_idrss += ru2->ru_idrss; 114 ru->ru_isrss += ru2->ru_isrss; 115 ru->ru_minflt += ru2->ru_minflt; 116 ru->ru_majflt += ru2->ru_majflt; 117 ru->ru_nswap += ru2->ru_nswap; 118 ru->ru_inblock += ru2->ru_inblock; 119 ru->ru_oublock += ru2->ru_oublock; 120 ru->ru_msgsnd += ru2->ru_msgsnd; 121 ru->ru_msgrcv += ru2->ru_msgrcv; 122 ru->ru_nsignals += ru2->ru_nsignals; 123 ru->ru_nvcsw += ru2->ru_nvcsw; 124 ru->ru_nivcsw += ru2->ru_nivcsw; 125} 126 127void 128prusage(r0, r1, e, b) 129 register struct rusage *r0, *r1; 130 struct timeval *e, *b; 131{ 132 register time_t t = 133 (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 134 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 135 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 136 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 137 register char *cp; 138 register long i; 139 register struct varent *vp = adrof(STRtime); 140 141 int ms = 142 (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000; 143 144 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 145 146 if (vp && vp->vec[0] && vp->vec[1]) 147 cp = short2str(vp->vec[1]); 148 149 for (; *cp; cp++) 150 if (*cp != '%') 151 (void) fputc(*cp, cshout); 152 else if (cp[1]) 153 switch (*++cp) { 154 155 case 'U': /* user CPU time used */ 156 pdeltat(&r1->ru_utime, &r0->ru_utime); 157 break; 158 159 case 'S': /* system CPU time used */ 160 pdeltat(&r1->ru_stime, &r0->ru_stime); 161 break; 162 163 case 'E': /* elapsed (wall-clock) time */ 164 pcsecs((long) ms); 165 break; 166 167 case 'P': /* percent time spent running */ 168 /* check if it did not run at all */ 169 i = (ms == 0) ? 0 : ((long long)t * 1000 / ms); 170 /* nn.n% */ 171 (void) fprintf(cshout, "%ld.%01ld%%", i / 10, i % 10); 172 break; 173 174 case 'W': /* number of swaps */ 175 i = r1->ru_nswap - r0->ru_nswap; 176 (void) fprintf(cshout, "%ld", i); 177 break; 178 179 case 'X': /* (average) shared text size */ 180 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 181 (r1->ru_ixrss - r0->ru_ixrss) / t); 182 break; 183 184 case 'D': /* (average) unshared data size */ 185 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 186 (r1->ru_idrss + r1->ru_isrss - 187 (r0->ru_idrss + r0->ru_isrss)) / t); 188 break; 189 190 case 'K': /* (average) total data memory used */ 191 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 192 ((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) - 193 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t); 194 break; 195 196 case 'M': /* max. Resident Set Size */ 197 (void) fprintf(cshout, "%ld", r1->ru_maxrss / 2L); 198 break; 199 200 case 'F': /* page faults */ 201 (void) fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt); 202 break; 203 204 case 'R': /* page reclaims */ 205 (void) fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt); 206 break; 207 208 case 'I': /* FS blocks in */ 209 (void) fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock); 210 break; 211 212 case 'O': /* FS blocks out */ 213 (void) fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock); 214 break; 215 216 case 'r': /* socket messages received */ 217 (void) fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 218 break; 219 220 case 's': /* socket messages sent */ 221 (void) fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 222 break; 223 224 case 'k': /* number of signals received */ 225 (void) fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals); 226 break; 227 228 case 'w': /* num. voluntary context switches (waits) */ 229 (void) fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 230 break; 231 232 case 'c': /* num. involuntary context switches */ 233 (void) fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 234 break; 235 } 236 (void) fputc('\n', cshout); 237} 238 239static void 240pdeltat(t1, t0) 241 struct timeval *t1, *t0; 242{ 243 struct timeval td; 244 245 timersub(t1, t0, &td); 246 (void) fprintf(cshout, "%ld.%01ld", td.tv_sec, td.tv_usec / 100000); 247} 248 249#define P2DIG(i) (void) fprintf(cshout, "%d%d", (i) / 10, (i) % 10) 250 251void 252psecs(l) 253 long l; 254{ 255 register int i; 256 257 i = l / 3600; 258 if (i) { 259 (void) fprintf(cshout, "%d:", i); 260 i = l % 3600; 261 P2DIG(i / 60); 262 goto minsec; 263 } 264 i = l; 265 (void) fprintf(cshout, "%d", i / 60); 266minsec: 267 i %= 60; 268 (void) fputc(':', cshout); 269 P2DIG(i); 270} 271 272void 273pcsecs(l) /* PWP: print mm:ss.dd, l is in sec*100 */ 274 long l; 275{ 276 register int i; 277 278 i = l / 360000; 279 if (i) { 280 (void) fprintf(cshout, "%d:", i); 281 i = (l % 360000) / 100; 282 P2DIG(i / 60); 283 goto minsec; 284 } 285 i = l / 100; 286 (void) fprintf(cshout, "%d", i / 60); 287minsec: 288 i %= 60; 289 (void) fputc(':', cshout); 290 P2DIG(i); 291 (void) fputc('.', cshout); 292 P2DIG((int) (l % 100)); 293} 294