1 /* $NetBSD: time.c,v 1.13 2002/05/25 23:29:17 wiz 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93"; 40 #else 41 __RCSID("$NetBSD: time.c,v 1.13 2002/05/25 23:29:17 wiz Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 47 #include <stdarg.h> 48 49 #include "csh.h" 50 #include "extern.h" 51 52 /* 53 * C Shell - routines handling process timing and niceing 54 */ 55 static void pdeltat(struct timeval *, struct timeval *); 56 extern char *strpct(u_long num, u_long denom, u_int digits); 57 58 void 59 settimes(void) 60 { 61 struct rusage ruch; 62 63 (void)gettimeofday(&time0, NULL); 64 (void)getrusage(RUSAGE_SELF, &ru0); 65 (void)getrusage(RUSAGE_CHILDREN, &ruch); 66 ruadd(&ru0, &ruch); 67 } 68 69 /* 70 * dotime is only called if it is truly a builtin function and not a 71 * prefix to another command 72 */ 73 void 74 /*ARGSUSED*/ 75 dotime(Char **v, struct command *t) 76 { 77 struct rusage ru1, ruch; 78 struct timeval timedol; 79 80 (void)getrusage(RUSAGE_SELF, &ru1); 81 (void)getrusage(RUSAGE_CHILDREN, &ruch); 82 ruadd(&ru1, &ruch); 83 (void)gettimeofday(&timedol, NULL); 84 prusage(&ru0, &ru1, &timedol, &time0); 85 } 86 87 /* 88 * donice is only called when it on the line by itself or with a +- value 89 */ 90 void 91 /*ARGSUSED*/ 92 donice(Char **v, struct command *t) 93 { 94 Char *cp; 95 int nval; 96 97 nval = 0; 98 v++; 99 cp = *v++; 100 if (cp == 0) 101 nval = 4; 102 else if (*v == 0 && any("+-", cp[0])) 103 nval = getn(cp); 104 (void)setpriority(PRIO_PROCESS, 0, nval); 105 } 106 107 void 108 ruadd(struct rusage *ru, struct rusage *ru2) 109 { 110 timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime); 111 timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime); 112 if (ru2->ru_maxrss > ru->ru_maxrss) 113 ru->ru_maxrss = ru2->ru_maxrss; 114 115 ru->ru_ixrss += ru2->ru_ixrss; 116 ru->ru_idrss += ru2->ru_idrss; 117 ru->ru_isrss += ru2->ru_isrss; 118 ru->ru_minflt += ru2->ru_minflt; 119 ru->ru_majflt += ru2->ru_majflt; 120 ru->ru_nswap += ru2->ru_nswap; 121 ru->ru_inblock += ru2->ru_inblock; 122 ru->ru_oublock += ru2->ru_oublock; 123 ru->ru_msgsnd += ru2->ru_msgsnd; 124 ru->ru_msgrcv += ru2->ru_msgrcv; 125 ru->ru_nsignals += ru2->ru_nsignals; 126 ru->ru_nvcsw += ru2->ru_nvcsw; 127 ru->ru_nivcsw += ru2->ru_nivcsw; 128 } 129 130 void 131 prusage(struct rusage *r0, struct rusage *r1, struct timeval *e, 132 struct timeval *b) 133 { 134 struct varent *vp; 135 char *cp; 136 long i; 137 time_t t; 138 int ms; 139 140 cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww"; 141 ms = (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000; 142 t = (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 + 143 (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 + 144 (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 + 145 (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000; 146 vp = adrof(STRtime); 147 148 if (vp && vp->vec[0] && vp->vec[1]) 149 cp = short2str(vp->vec[1]); 150 151 for (; *cp; cp++) 152 if (*cp != '%') 153 (void) fputc(*cp, cshout); 154 else if (cp[1]) 155 switch (*++cp) { 156 case 'D': /* (average) unshared data size */ 157 (void)fprintf(cshout, "%ld", t == 0 ? 0L : 158 (r1->ru_idrss + r1->ru_isrss - 159 (r0->ru_idrss + r0->ru_isrss)) / t); 160 break; 161 case 'E': /* elapsed (wall-clock) time */ 162 pcsecs((long) ms); 163 break; 164 case 'F': /* page faults */ 165 (void)fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt); 166 break; 167 case 'I': /* FS blocks in */ 168 (void)fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock); 169 break; 170 case 'K': /* (average) total data memory used */ 171 (void)fprintf(cshout, "%ld", t == 0 ? 0L : 172 ((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) - 173 (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t); 174 break; 175 case 'M': /* max. Resident Set Size */ 176 (void)fprintf(cshout, "%ld", r1->ru_maxrss / 2L); 177 break; 178 case 'O': /* FS blocks out */ 179 (void)fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock); 180 break; 181 case 'P': /* percent time spent running */ 182 /* check if it did not run at all */ 183 if (ms == 0) { 184 (void)fputs("0.0%", cshout); 185 } else { 186 (void)fputs(strpct((ulong)t, (ulong)ms, 1), cshout); 187 } 188 break; 189 case 'R': /* page reclaims */ 190 (void)fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt); 191 break; 192 case 'S': /* system CPU time used */ 193 pdeltat(&r1->ru_stime, &r0->ru_stime); 194 break; 195 case 'U': /* user CPU time used */ 196 pdeltat(&r1->ru_utime, &r0->ru_utime); 197 break; 198 case 'W': /* number of swaps */ 199 i = r1->ru_nswap - r0->ru_nswap; 200 (void)fprintf(cshout, "%ld", i); 201 break; 202 case 'X': /* (average) shared text size */ 203 (void)fprintf(cshout, "%ld", t == 0 ? 0L : 204 (r1->ru_ixrss - r0->ru_ixrss) / t); 205 break; 206 case 'c': /* num. involuntary context switches */ 207 (void)fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw); 208 break; 209 case 'k': /* number of signals received */ 210 (void)fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals); 211 break; 212 case 'r': /* socket messages received */ 213 (void)fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv); 214 break; 215 case 's': /* socket messages sent */ 216 (void)fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd); 217 break; 218 case 'w': /* num. voluntary context switches (waits) */ 219 (void)fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw); 220 break; 221 } 222 (void)fputc('\n', cshout); 223 } 224 225 static void 226 pdeltat(struct timeval *t1, struct timeval *t0) 227 { 228 struct timeval td; 229 230 timersub(t1, t0, &td); 231 (void)fprintf(cshout, "%ld.%01ld", (long)td.tv_sec, 232 (long)(td.tv_usec / 100000)); 233 } 234 235 #define P2DIG(i) (void)fprintf(cshout, "%d%d", (i) / 10, (i) % 10) 236 237 void 238 psecs(long l) 239 { 240 int i; 241 242 i = l / 3600; 243 if (i) { 244 (void)fprintf(cshout, "%d:", i); 245 i = l % 3600; 246 P2DIG(i / 60); 247 goto minsec; 248 } 249 i = l; 250 (void)fprintf(cshout, "%d", i / 60); 251 minsec: 252 i %= 60; 253 (void)fputc(':', cshout); 254 P2DIG(i); 255 } 256 257 void 258 pcsecs(long l) /* PWP: print mm:ss.dd, l is in sec*100 */ 259 { 260 int i; 261 262 i = l / 360000; 263 if (i) { 264 (void)fprintf(cshout, "%d:", i); 265 i = (l % 360000) / 100; 266 P2DIG(i / 60); 267 goto minsec; 268 } 269 i = l / 100; 270 (void)fprintf(cshout, "%d", i / 60); 271 minsec: 272 i %= 60; 273 (void)fputc(':', cshout); 274 P2DIG(i); 275 (void)fputc('.', cshout); 276 P2DIG((int) (l % 100)); 277 } 278