1 /* $OpenBSD: time.c,v 1.11 2005/02/25 16:07:10 deraadt 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 35 static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93"; 36 #else 37 static char rcsid[] = "$OpenBSD: time.c,v 1.11 2005/02/25 16:07:10 deraadt 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 */ 50 static void pdeltat(struct timeval *, struct timeval *); 51 52 void 53 settimes(void) 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 */ 67 void 68 /*ARGSUSED*/ 69 dotime(Char **v, struct command *t) 70 { 71 struct timeval timedol; 72 struct rusage ru1, ruch; 73 74 (void) getrusage(RUSAGE_SELF, &ru1); 75 (void) getrusage(RUSAGE_CHILDREN, &ruch); 76 ruadd(&ru1, &ruch); 77 (void) gettimeofday(&timedol, NULL); 78 prusage(&ru0, &ru1, &timedol, &time0); 79 } 80 81 /* 82 * donice is only called when it on the line by itself or with a +- value 83 */ 84 void 85 /*ARGSUSED*/ 86 donice(Char **v, struct command *t) 87 { 88 Char *cp; 89 int nval = 0; 90 91 v++, cp = *v++; 92 if (cp == 0) 93 nval = 4; 94 else if (*v == 0 && any("+-", cp[0])) 95 nval = getn(cp); 96 (void) setpriority(PRIO_PROCESS, 0, nval); 97 } 98 99 void 100 ruadd(struct rusage *ru, struct rusage *ru2) 101 { 102 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime); 103 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime); 104 if (ru2->ru_maxrss > ru->ru_maxrss) 105 ru->ru_maxrss = ru2->ru_maxrss; 106 107 ru->ru_ixrss += ru2->ru_ixrss; 108 ru->ru_idrss += ru2->ru_idrss; 109 ru->ru_isrss += ru2->ru_isrss; 110 ru->ru_minflt += ru2->ru_minflt; 111 ru->ru_majflt += ru2->ru_majflt; 112 ru->ru_nswap += ru2->ru_nswap; 113 ru->ru_inblock += ru2->ru_inblock; 114 ru->ru_oublock += ru2->ru_oublock; 115 ru->ru_msgsnd += ru2->ru_msgsnd; 116 ru->ru_msgrcv += ru2->ru_msgrcv; 117 ru->ru_nsignals += ru2->ru_nsignals; 118 ru->ru_nvcsw += ru2->ru_nvcsw; 119 ru->ru_nivcsw += ru2->ru_nivcsw; 120 } 121 122 void 123 prusage(struct rusage *r0, struct rusage *r1, struct timeval *e, 124 struct timeval *b) 125 { 126 time_t t = 127 (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 128 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 129 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 130 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 131 char *cp; 132 long i; 133 struct varent *vp = adrof(STRtime); 134 135 int ms = 136 (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000; 137 138 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 139 140 if (vp && vp->vec[0] && vp->vec[1]) 141 cp = short2str(vp->vec[1]); 142 143 for (; *cp; cp++) 144 if (*cp != '%') 145 (void) fputc(*cp, cshout); 146 else if (cp[1]) 147 switch (*++cp) { 148 149 case 'U': /* user CPU time used */ 150 pdeltat(&r1->ru_utime, &r0->ru_utime); 151 break; 152 153 case 'S': /* system CPU time used */ 154 pdeltat(&r1->ru_stime, &r0->ru_stime); 155 break; 156 157 case 'E': /* elapsed (wall-clock) time */ 158 pcsecs((long) ms); 159 break; 160 161 case 'P': /* percent time spent running */ 162 /* check if it did not run at all */ 163 i = (ms == 0) ? 0 : ((long long)t * 1000 / ms); 164 /* nn.n% */ 165 (void) fprintf(cshout, "%ld.%01ld%%", i / 10, i % 10); 166 break; 167 168 case 'W': /* number of swaps */ 169 i = r1->ru_nswap - r0->ru_nswap; 170 (void) fprintf(cshout, "%ld", i); 171 break; 172 173 case 'X': /* (average) shared text size */ 174 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 175 (r1->ru_ixrss - r0->ru_ixrss) / t); 176 break; 177 178 case 'D': /* (average) unshared data size */ 179 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 180 (r1->ru_idrss + r1->ru_isrss - 181 (r0->ru_idrss + r0->ru_isrss)) / t); 182 break; 183 184 case 'K': /* (average) total data memory used */ 185 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 186 ((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) - 187 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t); 188 break; 189 190 case 'M': /* max. Resident Set Size */ 191 (void) fprintf(cshout, "%ld", r1->ru_maxrss / 2L); 192 break; 193 194 case 'F': /* page faults */ 195 (void) fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt); 196 break; 197 198 case 'R': /* page reclaims */ 199 (void) fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt); 200 break; 201 202 case 'I': /* FS blocks in */ 203 (void) fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock); 204 break; 205 206 case 'O': /* FS blocks out */ 207 (void) fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock); 208 break; 209 210 case 'r': /* socket messages received */ 211 (void) fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 212 break; 213 214 case 's': /* socket messages sent */ 215 (void) fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 216 break; 217 218 case 'k': /* number of signals received */ 219 (void) fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals); 220 break; 221 222 case 'w': /* num. voluntary context switches (waits) */ 223 (void) fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 224 break; 225 226 case 'c': /* num. involuntary context switches */ 227 (void) fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 228 break; 229 } 230 (void) fputc('\n', cshout); 231 } 232 233 static void 234 pdeltat(struct timeval *t1, struct timeval *t0) 235 { 236 struct timeval td; 237 238 timersub(t1, t0, &td); 239 (void) fprintf(cshout, "%ld.%01ld", td.tv_sec, td.tv_usec / 100000); 240 } 241 242 #define P2DIG(i) (void) fprintf(cshout, "%d%d", (i) / 10, (i) % 10) 243 244 void 245 psecs(long l) 246 { 247 int i; 248 249 i = l / 3600; 250 if (i) { 251 (void) fprintf(cshout, "%d:", i); 252 i = l % 3600; 253 P2DIG(i / 60); 254 goto minsec; 255 } 256 i = l; 257 (void) fprintf(cshout, "%d", i / 60); 258 minsec: 259 i %= 60; 260 (void) fputc(':', cshout); 261 P2DIG(i); 262 } 263 264 void 265 pcsecs(long l) /* PWP: print mm:ss.dd, l is in sec*100 */ 266 { 267 int i; 268 269 i = l / 360000; 270 if (i) { 271 (void) fprintf(cshout, "%d:", i); 272 i = (l % 360000) / 100; 273 P2DIG(i / 60); 274 goto minsec; 275 } 276 i = l / 100; 277 (void) fprintf(cshout, "%d", i / 60); 278 minsec: 279 i %= 60; 280 (void) fputc(':', cshout); 281 P2DIG(i); 282 (void) fputc('.', cshout); 283 P2DIG((int) (l % 100)); 284 } 285