1/* $OpenBSD: time.c,v 1.18 2023/03/08 04:43:04 guenther 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 */ 42static void pdeltat(struct timeval *, struct timeval *); 43 44void 45settimes(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 */ 59void 60dotime(Char **v, struct command *t) 61{ 62 struct timespec timedol; 63 struct rusage ru1, ruch; 64 65 (void) getrusage(RUSAGE_SELF, &ru1); 66 (void) getrusage(RUSAGE_CHILDREN, &ruch); 67 ruadd(&ru1, &ruch); 68 (void) clock_gettime(CLOCK_MONOTONIC, &timedol); 69 prusage(&ru0, &ru1, &timedol, &time0); 70} 71 72/* 73 * donice is only called when it on the line by itself or with a +- value 74 */ 75void 76donice(Char **v, struct command *t) 77{ 78 Char *cp; 79 int nval = 0; 80 81 v++, cp = *v++; 82 if (cp == 0) 83 nval = 4; 84 else if (*v == 0 && any("+-", cp[0])) 85 nval = getn(cp); 86 (void) setpriority(PRIO_PROCESS, 0, nval); 87} 88 89void 90ruadd(struct rusage *ru, struct rusage *ru2) 91{ 92 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime); 93 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime); 94 if (ru2->ru_maxrss > ru->ru_maxrss) 95 ru->ru_maxrss = ru2->ru_maxrss; 96 97 ru->ru_ixrss += ru2->ru_ixrss; 98 ru->ru_idrss += ru2->ru_idrss; 99 ru->ru_isrss += ru2->ru_isrss; 100 ru->ru_minflt += ru2->ru_minflt; 101 ru->ru_majflt += ru2->ru_majflt; 102 ru->ru_nswap += ru2->ru_nswap; 103 ru->ru_inblock += ru2->ru_inblock; 104 ru->ru_oublock += ru2->ru_oublock; 105 ru->ru_msgsnd += ru2->ru_msgsnd; 106 ru->ru_msgrcv += ru2->ru_msgrcv; 107 ru->ru_nsignals += ru2->ru_nsignals; 108 ru->ru_nvcsw += ru2->ru_nvcsw; 109 ru->ru_nivcsw += ru2->ru_nivcsw; 110} 111 112void 113prusage(struct rusage *r0, struct rusage *r1, struct timespec *e, 114 struct timespec *b) 115{ 116 time_t t = 117 (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 118 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 119 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 120 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 121 char *cp; 122 long i; 123 struct varent *vp = adrof(STRtime); 124 125 int ms = 126 (e->tv_sec - b->tv_sec) * 100 + (e->tv_nsec - b->tv_nsec) / 10000000; 127 128 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 129 130 if (vp && vp->vec[0] && vp->vec[1]) 131 cp = short2str(vp->vec[1]); 132 133 for (; *cp; cp++) 134 if (*cp != '%') 135 (void) fputc(*cp, cshout); 136 else if (cp[1]) 137 switch (*++cp) { 138 139 case 'U': /* user CPU time used */ 140 pdeltat(&r1->ru_utime, &r0->ru_utime); 141 break; 142 143 case 'S': /* system CPU time used */ 144 pdeltat(&r1->ru_stime, &r0->ru_stime); 145 break; 146 147 case 'E': /* elapsed (wall-clock) time */ 148 pcsecs((long) ms); 149 break; 150 151 case 'P': /* percent time spent running */ 152 /* check if it did not run at all */ 153 i = (ms == 0) ? 0 : ((long long)t * 1000 / ms); 154 /* nn.n% */ 155 (void) fprintf(cshout, "%ld.%01ld%%", i / 10, i % 10); 156 break; 157 158 case 'W': /* number of swaps */ 159 i = r1->ru_nswap - r0->ru_nswap; 160 (void) fprintf(cshout, "%ld", i); 161 break; 162 163 case 'X': /* (average) shared text size */ 164 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 165 (long)((r1->ru_ixrss - r0->ru_ixrss) / t)); 166 break; 167 168 case 'D': /* (average) unshared data size */ 169 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 170 (long)((r1->ru_idrss + r1->ru_isrss - 171 (r0->ru_idrss + r0->ru_isrss)) / t)); 172 break; 173 174 case 'K': /* (average) total data memory used */ 175 (void) fprintf(cshout, "%ld", t == 0 ? 0L : 176 (long)(((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) 177 - (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) 178 / t)); 179 break; 180 181 case 'M': /* max. Resident Set Size */ 182 (void) fprintf(cshout, "%ld", r1->ru_maxrss / 2L); 183 break; 184 185 case 'F': /* page faults */ 186 (void) fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt); 187 break; 188 189 case 'R': /* page reclaims */ 190 (void) fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt); 191 break; 192 193 case 'I': /* FS blocks in */ 194 (void) fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock); 195 break; 196 197 case 'O': /* FS blocks out */ 198 (void) fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock); 199 break; 200 201 case 'r': /* socket messages received */ 202 (void) fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 203 break; 204 205 case 's': /* socket messages sent */ 206 (void) fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 207 break; 208 209 case 'k': /* number of signals received */ 210 (void) fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals); 211 break; 212 213 case 'w': /* num. voluntary context switches (waits) */ 214 (void) fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 215 break; 216 217 case 'c': /* num. involuntary context switches */ 218 (void) fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 219 break; 220 } 221 (void) fputc('\n', cshout); 222} 223 224static void 225pdeltat(struct timeval *t1, struct timeval *t0) 226{ 227 struct timeval td; 228 229 timersub(t1, t0, &td); 230 (void) fprintf(cshout, "%lld.%01ld", (long long)td.tv_sec, 231 td.tv_usec / 100000); 232} 233 234#define P2DIG(i) (void) fprintf(cshout, "%d%d", (i) / 10, (i) % 10) 235 236void 237psecs(long l) 238{ 239 int i; 240 241 i = l / 3600; 242 if (i) { 243 (void) fprintf(cshout, "%d:", i); 244 i = l % 3600; 245 P2DIG(i / 60); 246 goto minsec; 247 } 248 i = l; 249 (void) fprintf(cshout, "%d", i / 60); 250minsec: 251 i %= 60; 252 (void) fputc(':', cshout); 253 P2DIG(i); 254} 255 256void 257pcsecs(long l) /* PWP: print mm:ss.dd, l is in sec*100 */ 258{ 259 int i; 260 261 i = l / 360000; 262 if (i) { 263 (void) fprintf(cshout, "%d:", i); 264 i = (l % 360000) / 100; 265 P2DIG(i / 60); 266 goto minsec; 267 } 268 i = l / 100; 269 (void) fprintf(cshout, "%d", i / 60); 270minsec: 271 i %= 60; 272 (void) fputc(':', cshout); 273 P2DIG(i); 274 (void) fputc('.', cshout); 275 P2DIG((int) (l % 100)); 276} 277