1 /* $NetBSD: time.c,v 1.21 2017/07/15 14:35:55 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 1.21 2017/07/15 14:35:55 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)clock_gettime(CLOCK_MONOTONIC, &time0); 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 timespec timedol; 77 78 (void)getrusage(RUSAGE_SELF, &ru1); 79 (void)getrusage(RUSAGE_CHILDREN, &ruch); 80 ruadd(&ru1, &ruch); 81 (void)clock_gettime(CLOCK_MONOTONIC, &timedol); 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 } 127 128 void 129 prusage(FILE *fp, struct rusage *r0, struct rusage *r1, struct timespec *e, 130 struct timespec *b) 131 { 132 struct varent *vp; 133 const char *cp; 134 135 vp = adrof(STRtime); 136 137 if (vp && vp->vec[0] && vp->vec[1]) 138 cp = short2str(vp->vec[1]); 139 else 140 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 141 prusage1(fp, cp, r0, r1, e, b); 142 } 143 #endif 144 145 void 146 prusage1(FILE *fp, const char *cp, struct rusage *r0, struct rusage *r1, 147 struct timespec *e, struct timespec *b) 148 { 149 long i; 150 time_t t; 151 time_t ms; 152 153 ms = (e->tv_sec - b->tv_sec) * 100 + (e->tv_nsec - b->tv_nsec) / 10000000; 154 t = (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 155 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 156 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 157 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 158 159 for (; *cp; cp++) 160 if (*cp != '%') 161 (void) fputc(*cp, fp); 162 else if (cp[1]) 163 switch (*++cp) { 164 case 'D': /* (average) unshared data size */ 165 (void)fprintf(fp, "%ld", t == 0 ? 0L : 166 (long)((r1->ru_idrss + r1->ru_isrss - 167 (r0->ru_idrss + r0->ru_isrss)) / t)); 168 break; 169 case 'E': /* elapsed (wall-clock) time */ 170 pcsecs(fp, (long) ms); 171 break; 172 case 'F': /* page faults */ 173 (void)fprintf(fp, "%ld", r1->ru_majflt - r0->ru_majflt); 174 break; 175 case 'I': /* FS blocks in */ 176 (void)fprintf(fp, "%ld", r1->ru_inblock - r0->ru_inblock); 177 break; 178 case 'K': /* (average) total data memory used */ 179 (void)fprintf(fp, "%ld", t == 0 ? 0L : 180 (long)(((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) - 181 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t)); 182 break; 183 case 'M': /* max. Resident Set Size */ 184 (void)fprintf(fp, "%ld", r1->ru_maxrss / 2L); 185 break; 186 case 'O': /* FS blocks out */ 187 (void)fprintf(fp, "%ld", r1->ru_oublock - r0->ru_oublock); 188 break; 189 case 'P': /* percent time spent running */ 190 /* check if it did not run at all */ 191 if (ms == 0) { 192 (void)fputs("0.0%", fp); 193 } else { 194 char pb[32]; 195 (void)fputs(strpct(pb, sizeof(pb), 196 (uintmax_t)t, (uintmax_t)ms, 1), fp); 197 (void)fputc('%', fp); 198 } 199 break; 200 case 'R': /* page reclaims */ 201 (void)fprintf(fp, "%ld", r1->ru_minflt - r0->ru_minflt); 202 break; 203 case 'S': /* system CPU time used */ 204 pdeltat(fp, &r1->ru_stime, &r0->ru_stime); 205 break; 206 case 'U': /* user CPU time used */ 207 pdeltat(fp, &r1->ru_utime, &r0->ru_utime); 208 break; 209 case 'W': /* number of swaps */ 210 i = r1->ru_nswap - r0->ru_nswap; 211 (void)fprintf(fp, "%ld", i); 212 break; 213 case 'X': /* (average) shared text size */ 214 (void)fprintf(fp, "%ld", t == 0 ? 0L : 215 (long)((r1->ru_ixrss - r0->ru_ixrss) / t)); 216 break; 217 case 'c': /* num. involuntary context switches */ 218 (void)fprintf(fp, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 219 break; 220 case 'k': /* number of signals received */ 221 (void)fprintf(fp, "%ld", r1->ru_nsignals-r0->ru_nsignals); 222 break; 223 case 'r': /* socket messages received */ 224 (void)fprintf(fp, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 225 break; 226 case 's': /* socket messages sent */ 227 (void)fprintf(fp, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 228 break; 229 case 'w': /* num. voluntary context switches (waits) */ 230 (void)fprintf(fp, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 231 break; 232 } 233 (void)fputc('\n', fp); 234 } 235 236 static void 237 pdeltat(FILE *fp, struct timeval *t1, struct timeval *t0) 238 { 239 struct timeval td; 240 241 timersub(t1, t0, &td); 242 (void)fprintf(fp, "%ld.%01ld", (long)td.tv_sec, 243 (long)(td.tv_usec / 100000)); 244 } 245 246 #define P2DIG(fp, i) (void)fprintf(fp, "%ld%ld", (i) / 10, (i) % 10) 247 248 #ifndef NOT_CSH 249 void 250 psecs(long l) 251 { 252 long i; 253 254 i = l / 3600; 255 if (i) { 256 (void)fprintf(cshout, "%ld:", i); 257 i = l % 3600; 258 P2DIG(cshout, i / 60); 259 goto minsec; 260 } 261 i = l; 262 (void)fprintf(cshout, "%ld", i / 60); 263 minsec: 264 i %= 60; 265 (void)fputc(':', cshout); 266 P2DIG(cshout, i); 267 } 268 #endif 269 270 static void 271 pcsecs(FILE *fp, long l) /* PWP: print mm:ss.dd, l is in sec*100 */ 272 { 273 long i; 274 275 i = l / 360000; 276 if (i) { 277 (void)fprintf(fp, "%ld:", i); 278 i = (l % 360000) / 100; 279 P2DIG(fp, i / 60); 280 goto minsec; 281 } 282 i = l / 100; 283 (void)fprintf(fp, "%ld", i / 60); 284 minsec: 285 i %= 60; 286 (void)fputc(':', fp); 287 P2DIG(fp, i); 288 (void)fputc('.', fp); 289 P2DIG(fp, (l % 100)); 290 } 291