1 /* $OpenBSD: time.c,v 1.17 2018/09/18 06:56:09 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 #include <sys/types.h> 34 #include <stdarg.h> 35 36 #include "csh.h" 37 #include "extern.h" 38 39 /* 40 * C Shell - routines handling process timing and niceing 41 */ 42 static void pdeltat(struct timeval *, struct timeval *); 43 44 void 45 settimes(void) 46 { 47 struct rusage ruch; 48 49 (void) clock_gettime(CLOCK_MONOTONIC, &time0); 50 (void) getrusage(RUSAGE_SELF, &ru0); 51 (void) getrusage(RUSAGE_CHILDREN, &ruch); 52 ruadd(&ru0, &ruch); 53 } 54 55 /* 56 * dotime is only called if it is truly a builtin function and not a 57 * prefix to another command 58 */ 59 void 60 /*ARGSUSED*/ 61 dotime(Char **v, struct command *t) 62 { 63 struct timespec timedol; 64 struct rusage ru1, ruch; 65 66 (void) getrusage(RUSAGE_SELF, &ru1); 67 (void) getrusage(RUSAGE_CHILDREN, &ruch); 68 ruadd(&ru1, &ruch); 69 (void) clock_gettime(CLOCK_MONOTONIC, &timedol); 70 prusage(&ru0, &ru1, &timedol, &time0); 71 } 72 73 /* 74 * donice is only called when it on the line by itself or with a +- value 75 */ 76 void 77 /*ARGSUSED*/ 78 donice(Char **v, struct command *t) 79 { 80 Char *cp; 81 int nval = 0; 82 83 v++, cp = *v++; 84 if (cp == 0) 85 nval = 4; 86 else if (*v == 0 && any("+-", cp[0])) 87 nval = getn(cp); 88 (void) setpriority(PRIO_PROCESS, 0, nval); 89 } 90 91 void 92 ruadd(struct rusage *ru, struct rusage *ru2) 93 { 94 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime); 95 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime); 96 if (ru2->ru_maxrss > ru->ru_maxrss) 97 ru->ru_maxrss = ru2->ru_maxrss; 98 99 ru->ru_ixrss += ru2->ru_ixrss; 100 ru->ru_idrss += ru2->ru_idrss; 101 ru->ru_isrss += ru2->ru_isrss; 102 ru->ru_minflt += ru2->ru_minflt; 103 ru->ru_majflt += ru2->ru_majflt; 104 ru->ru_nswap += ru2->ru_nswap; 105 ru->ru_inblock += ru2->ru_inblock; 106 ru->ru_oublock += ru2->ru_oublock; 107 ru->ru_msgsnd += ru2->ru_msgsnd; 108 ru->ru_msgrcv += ru2->ru_msgrcv; 109 ru->ru_nsignals += ru2->ru_nsignals; 110 ru->ru_nvcsw += ru2->ru_nvcsw; 111 ru->ru_nivcsw += ru2->ru_nivcsw; 112 } 113 114 void 115 prusage(struct rusage *r0, struct rusage *r1, struct timespec *e, 116 struct timespec *b) 117 { 118 time_t t = 119 (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 120 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 121 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 122 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 123 char *cp; 124 long i; 125 struct varent *vp = adrof(STRtime); 126 127 int ms = 128 (e->tv_sec - b->tv_sec) * 100 + (e->tv_nsec - b->tv_nsec) / 10000000; 129 130 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 131 132 if (vp && vp->vec[0] && vp->vec[1]) 133 cp = short2str(vp->vec[1]); 134 135 for (; *cp; cp++) 136 if (*cp != '%') 137 (void) fputc(*cp, cshout); 138 else if (cp[1]) 139 switch (*++cp) { 140 141 case 'U': /* user CPU time used */ 142 pdeltat(&r1->ru_utime, &r0->ru_utime); 143 break; 144 145 case 'S': /* system CPU time used */ 146 pdeltat(&r1->ru_stime, &r0->ru_stime); 147 break; 148 149 case 'E': /* elapsed (wall-clock) time */ 150 pcsecs((long) ms); 151 break; 152 153 case 'P': /* percent time spent running */ 154 /* check if it did not run at all */ 155 i = (ms == 0) ? 0 : ((long long)t * 1000 / ms); 156 /* nn.n% */ 157 (void) fprintf(cshout, "%ld.%01ld%%", i / 10, i % 10); 158 break; 159 160 case 'W': /* number of swaps */ 161 i = r1->ru_nswap - r0->ru_nswap; 162 (void) fprintf(cshout, "%ld", i); 163 break; 164 165 case 'X': /* (average) shared text size */ 166 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 167 (long)((r1->ru_ixrss - r0->ru_ixrss) / t)); 168 break; 169 170 case 'D': /* (average) unshared data size */ 171 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 172 (long)((r1->ru_idrss + r1->ru_isrss - 173 (r0->ru_idrss + r0->ru_isrss)) / t)); 174 break; 175 176 case 'K': /* (average) total data memory used */ 177 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 178 (long)(((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) 179 - (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) 180 / t)); 181 break; 182 183 case 'M': /* max. Resident Set Size */ 184 (void) fprintf(cshout, "%ld", r1->ru_maxrss / 2L); 185 break; 186 187 case 'F': /* page faults */ 188 (void) fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt); 189 break; 190 191 case 'R': /* page reclaims */ 192 (void) fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt); 193 break; 194 195 case 'I': /* FS blocks in */ 196 (void) fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock); 197 break; 198 199 case 'O': /* FS blocks out */ 200 (void) fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock); 201 break; 202 203 case 'r': /* socket messages received */ 204 (void) fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 205 break; 206 207 case 's': /* socket messages sent */ 208 (void) fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 209 break; 210 211 case 'k': /* number of signals received */ 212 (void) fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals); 213 break; 214 215 case 'w': /* num. voluntary context switches (waits) */ 216 (void) fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 217 break; 218 219 case 'c': /* num. involuntary context switches */ 220 (void) fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 221 break; 222 } 223 (void) fputc('\n', cshout); 224 } 225 226 static void 227 pdeltat(struct timeval *t1, struct timeval *t0) 228 { 229 struct timeval td; 230 231 timersub(t1, t0, &td); 232 (void) fprintf(cshout, "%lld.%01ld", (long long)td.tv_sec, 233 td.tv_usec / 100000); 234 } 235 236 #define P2DIG(i) (void) fprintf(cshout, "%d%d", (i) / 10, (i) % 10) 237 238 void 239 psecs(long l) 240 { 241 int i; 242 243 i = l / 3600; 244 if (i) { 245 (void) fprintf(cshout, "%d:", i); 246 i = l % 3600; 247 P2DIG(i / 60); 248 goto minsec; 249 } 250 i = l; 251 (void) fprintf(cshout, "%d", i / 60); 252 minsec: 253 i %= 60; 254 (void) fputc(':', cshout); 255 P2DIG(i); 256 } 257 258 void 259 pcsecs(long l) /* PWP: print mm:ss.dd, l is in sec*100 */ 260 { 261 int i; 262 263 i = l / 360000; 264 if (i) { 265 (void) fprintf(cshout, "%d:", i); 266 i = (l % 360000) / 100; 267 P2DIG(i / 60); 268 goto minsec; 269 } 270 i = l / 100; 271 (void) fprintf(cshout, "%d", i / 60); 272 minsec: 273 i %= 60; 274 (void) fputc(':', cshout); 275 P2DIG(i); 276 (void) fputc('.', cshout); 277 P2DIG((int) (l % 100)); 278 } 279