time.c revision 1.18
1 /* $NetBSD: time.c,v 1.18 2011/08/28 07:49:16 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93"; 36 #else 37 __RCSID("$NetBSD: time.c,v 1.18 2011/08/28 07:49:16 christos Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #ifndef NOT_CSH 42 #include <sys/types.h> 43 #include <stdarg.h> 44 #include "csh.h" 45 #include "extern.h" 46 #endif 47 #include <util.h> 48 49 /* 50 * C Shell - routines handling process timing and niceing 51 */ 52 static void pdeltat(FILE *, struct timeval *, struct timeval *); 53 static void pcsecs(FILE *, long); 54 55 #ifndef NOT_CSH 56 void 57 settimes(void) 58 { 59 struct rusage ruch; 60 61 (void)gettimeofday(&time0, NULL); 62 (void)getrusage(RUSAGE_SELF, &ru0); 63 (void)getrusage(RUSAGE_CHILDREN, &ruch); 64 ruadd(&ru0, &ruch); 65 } 66 67 /* 68 * dotime is only called if it is truly a builtin function and not a 69 * prefix to another command 70 */ 71 void 72 /*ARGSUSED*/ 73 dotime(Char **v, struct command *t) 74 { 75 struct rusage ru1, ruch; 76 struct timeval timedol; 77 78 (void)getrusage(RUSAGE_SELF, &ru1); 79 (void)getrusage(RUSAGE_CHILDREN, &ruch); 80 ruadd(&ru1, &ruch); 81 (void)gettimeofday(&timedol, NULL); 82 prusage(cshout, &ru0, &ru1, &timedol, &time0); 83 } 84 85 /* 86 * donice is only called when it on the line by itself or with a +- value 87 */ 88 void 89 /*ARGSUSED*/ 90 donice(Char **v, struct command *t) 91 { 92 Char *cp; 93 int nval; 94 95 nval = 0; 96 v++; 97 cp = *v++; 98 if (cp == 0) 99 nval = 4; 100 else if (*v == 0 && any("+-", cp[0])) 101 nval = getn(cp); 102 (void)setpriority(PRIO_PROCESS, 0, nval); 103 } 104 105 void 106 ruadd(struct rusage *ru, struct rusage *ru2) 107 { 108 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime); 109 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime); 110 if (ru2->ru_maxrss > ru->ru_maxrss) 111 ru->ru_maxrss = ru2->ru_maxrss; 112 113 ru->ru_ixrss += ru2->ru_ixrss; 114 ru->ru_idrss += ru2->ru_idrss; 115 ru->ru_isrss += ru2->ru_isrss; 116 ru->ru_minflt += ru2->ru_minflt; 117 ru->ru_majflt += ru2->ru_majflt; 118 ru->ru_nswap += ru2->ru_nswap; 119 ru->ru_inblock += ru2->ru_inblock; 120 ru->ru_oublock += ru2->ru_oublock; 121 ru->ru_msgsnd += ru2->ru_msgsnd; 122 ru->ru_msgrcv += ru2->ru_msgrcv; 123 ru->ru_nsignals += ru2->ru_nsignals; 124 ru->ru_nvcsw += ru2->ru_nvcsw; 125 ru->ru_nivcsw += ru2->ru_nivcsw; 126 } 127 #endif /* NOT_CSH */ 128 129 void 130 prusage(FILE *fp, struct rusage *r0, struct rusage *r1, struct timeval *e, 131 struct timeval *b) 132 { 133 #ifndef NOT_CSH 134 struct varent *vp; 135 #endif 136 const char *cp; 137 long i; 138 time_t t; 139 int ms; 140 141 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 142 ms = (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000; 143 t = (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 144 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 145 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 146 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 147 #ifndef NOT_CSH 148 vp = adrof(STRtime); 149 150 if (vp && vp->vec[0] && vp->vec[1]) 151 cp = short2str(vp->vec[1]); 152 #endif 153 154 for (; *cp; cp++) 155 if (*cp != '%') 156 (void) fputc(*cp, fp); 157 else if (cp[1]) 158 switch (*++cp) { 159 case 'D': /* (average) unshared data size */ 160 (void)fprintf(fp, "%ld", t == 0 ? 0L : 161 (long)((r1->ru_idrss + r1->ru_isrss - 162 (r0->ru_idrss + r0->ru_isrss)) / t)); 163 break; 164 case 'E': /* elapsed (wall-clock) time */ 165 pcsecs(fp, (long) ms); 166 break; 167 case 'F': /* page faults */ 168 (void)fprintf(fp, "%ld", r1->ru_majflt - r0->ru_majflt); 169 break; 170 case 'I': /* FS blocks in */ 171 (void)fprintf(fp, "%ld", r1->ru_inblock - r0->ru_inblock); 172 break; 173 case 'K': /* (average) total data memory used */ 174 (void)fprintf(fp, "%ld", t == 0 ? 0L : 175 (long)(((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) - 176 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t)); 177 break; 178 case 'M': /* max. Resident Set Size */ 179 (void)fprintf(fp, "%ld", r1->ru_maxrss / 2L); 180 break; 181 case 'O': /* FS blocks out */ 182 (void)fprintf(fp, "%ld", r1->ru_oublock - r0->ru_oublock); 183 break; 184 case 'P': /* percent time spent running */ 185 /* check if it did not run at all */ 186 if (ms == 0) { 187 (void)fputs("0.0%", fp); 188 } else { 189 char pb[32]; 190 (void)fputs(strpct(pb, sizeof(pb), t, ms, 1), fp); 191 (void)fputc('%', fp); 192 } 193 break; 194 case 'R': /* page reclaims */ 195 (void)fprintf(fp, "%ld", r1->ru_minflt - r0->ru_minflt); 196 break; 197 case 'S': /* system CPU time used */ 198 pdeltat(fp, &r1->ru_stime, &r0->ru_stime); 199 break; 200 case 'U': /* user CPU time used */ 201 pdeltat(fp, &r1->ru_utime, &r0->ru_utime); 202 break; 203 case 'W': /* number of swaps */ 204 i = r1->ru_nswap - r0->ru_nswap; 205 (void)fprintf(fp, "%ld", i); 206 break; 207 case 'X': /* (average) shared text size */ 208 (void)fprintf(fp, "%ld", t == 0 ? 0L : 209 (long)((r1->ru_ixrss - r0->ru_ixrss) / t)); 210 break; 211 case 'c': /* num. involuntary context switches */ 212 (void)fprintf(fp, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 213 break; 214 case 'k': /* number of signals received */ 215 (void)fprintf(fp, "%ld", r1->ru_nsignals-r0->ru_nsignals); 216 break; 217 case 'r': /* socket messages received */ 218 (void)fprintf(fp, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 219 break; 220 case 's': /* socket messages sent */ 221 (void)fprintf(fp, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 222 break; 223 case 'w': /* num. voluntary context switches (waits) */ 224 (void)fprintf(fp, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 225 break; 226 } 227 (void)fputc('\n', fp); 228 } 229 230 static void 231 pdeltat(FILE *fp, struct timeval *t1, struct timeval *t0) 232 { 233 struct timeval td; 234 235 timersub(t1, t0, &td); 236 (void)fprintf(fp, "%ld.%01ld", (long)td.tv_sec, 237 (long)(td.tv_usec / 100000)); 238 } 239 240 #define P2DIG(fp, i) (void)fprintf(fp, "%d%d", (i) / 10, (i) % 10) 241 242 #ifndef NOT_CSH 243 void 244 psecs(long l) 245 { 246 int i; 247 248 i = l / 3600; 249 if (i) { 250 (void)fprintf(cshout, "%d:", i); 251 i = l % 3600; 252 P2DIG(cshout, i / 60); 253 goto minsec; 254 } 255 i = l; 256 (void)fprintf(cshout, "%d", i / 60); 257 minsec: 258 i %= 60; 259 (void)fputc(':', cshout); 260 P2DIG(cshout, i); 261 } 262 #endif 263 264 static void 265 pcsecs(FILE *fp, 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(fp, "%d:", i); 272 i = (l % 360000) / 100; 273 P2DIG(fp, i / 60); 274 goto minsec; 275 } 276 i = l / 100; 277 (void)fprintf(fp, "%d", i / 60); 278 minsec: 279 i %= 60; 280 (void)fputc(':', fp); 281 P2DIG(fp, i); 282 (void)fputc('.', fp); 283 P2DIG(fp, (int) (l % 100)); 284 } 285
Indexes created Wed Sep 24 02:09:48 GMT 2025