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Annotation of 43BSD/bin/csh/sh.time.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley Software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char *sccsid = "@(#)sh.time.c   5.4 (Berkeley) 5/13/86";
        !             9: #endif
        !            10: 
        !            11: #include "sh.h"
        !            12: 
        !            13: /*
        !            14:  * C Shell - routines handling process timing and niceing
        !            15:  */
        !            16: 
        !            17: settimes()
        !            18: {
        !            19:        struct rusage ruch;
        !            20: 
        !            21:        (void) gettimeofday(&time0, (struct timezone *)0);
        !            22:        (void) getrusage(RUSAGE_SELF, &ru0);
        !            23:        (void) getrusage(RUSAGE_CHILDREN, &ruch);
        !            24:        ruadd(&ru0, &ruch);
        !            25: }
        !            26: 
        !            27: /*
        !            28:  * dotime is only called if it is truly a builtin function and not a
        !            29:  * prefix to another command
        !            30:  */
        !            31: dotime()
        !            32: {
        !            33:        struct timeval timedol;
        !            34:        struct rusage ru1, ruch;
        !            35: 
        !            36:        (void) getrusage(RUSAGE_SELF, &ru1);
        !            37:        (void) getrusage(RUSAGE_CHILDREN, &ruch);
        !            38:        ruadd(&ru1, &ruch);
        !            39:        (void) gettimeofday(&timedol, (struct timezone *)0);
        !            40:        prusage(&ru0, &ru1, &timedol, &time0);
        !            41: }
        !            42: 
        !            43: /*
        !            44:  * donice is only called when it on the line by itself or with a +- value
        !            45:  */
        !            46: donice(v)
        !            47:        register char **v;
        !            48: {
        !            49:        register char *cp;
        !            50:        int nval;
        !            51: 
        !            52:        v++, cp = *v++;
        !            53:        if (cp == 0)
        !            54:                nval = 4;
        !            55:        else if (*v == 0 && any(cp[0], "+-"))
        !            56:                nval = getn(cp);
        !            57:        (void) setpriority(PRIO_PROCESS, 0, nval);
        !            58: }
        !            59: 
        !            60: ruadd(ru, ru2)
        !            61:        register struct rusage *ru, *ru2;
        !            62: {
        !            63:        register long *lp, *lp2;
        !            64:        register int cnt;
        !            65: 
        !            66:        tvadd(&ru->ru_utime, &ru2->ru_utime);
        !            67:        tvadd(&ru->ru_stime, &ru2->ru_stime);
        !            68:        if (ru2->ru_maxrss > ru->ru_maxrss)
        !            69:                ru->ru_maxrss = ru2->ru_maxrss;
        !            70:        cnt = &ru->ru_last - &ru->ru_first + 1;
        !            71:        lp = &ru->ru_first; lp2 = &ru2->ru_first;
        !            72:        do
        !            73:                *lp++ += *lp2++;
        !            74:        while (--cnt > 0);
        !            75: }
        !            76: 
        !            77: prusage(r0, r1, e, b)
        !            78:        register struct rusage *r0, *r1;
        !            79:        struct timeval *e, *b;
        !            80: {
        !            81:        register time_t t =
        !            82:            (r1->ru_utime.tv_sec-r0->ru_utime.tv_sec)*100+
        !            83:            (r1->ru_utime.tv_usec-r0->ru_utime.tv_usec)/10000+
        !            84:            (r1->ru_stime.tv_sec-r0->ru_stime.tv_sec)*100+
        !            85:            (r1->ru_stime.tv_usec-r0->ru_stime.tv_usec)/10000;
        !            86:        register char *cp;
        !            87:        register int i;
        !            88:        register struct varent *vp = adrof("time");
        !            89:        int ms =
        !            90:            (e->tv_sec-b->tv_sec)*100 + (e->tv_usec-b->tv_usec)/10000;
        !            91: 
        !            92:        cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww";
        !            93:        if (vp && vp->vec[0] && vp->vec[1])
        !            94:                cp = vp->vec[1];
        !            95:        for (; *cp; cp++)
        !            96:        if (*cp != '%')
        !            97:                putchar(*cp);
        !            98:        else if (cp[1]) switch(*++cp) {
        !            99: 
        !           100:        case 'U':
        !           101:                pdeltat(&r1->ru_utime, &r0->ru_utime);
        !           102:                break;
        !           103: 
        !           104:        case 'S':
        !           105:                pdeltat(&r1->ru_stime, &r0->ru_stime);
        !           106:                break;
        !           107: 
        !           108:        case 'E':
        !           109:                psecs((long)(ms / 100));
        !           110:                break;
        !           111: 
        !           112:        case 'P':
        !           113:                printf("%d%%", (int) (t*100 / ((ms ? ms : 1))));
        !           114:                break;
        !           115: 
        !           116:        case 'W':
        !           117:                i = r1->ru_nswap - r0->ru_nswap;
        !           118:                printf("%d", i);
        !           119:                break;
        !           120: 
        !           121:        case 'X':
        !           122:                printf("%d", t == 0 ? 0 : (r1->ru_ixrss-r0->ru_ixrss)/t);
        !           123:                break;
        !           124: 
        !           125:        case 'D':
        !           126:                printf("%d", t == 0 ? 0 :
        !           127:                    (r1->ru_idrss+r1->ru_isrss-(r0->ru_idrss+r0->ru_isrss))/t);
        !           128:                break;
        !           129: 
        !           130:        case 'K':
        !           131:                printf("%d", t == 0 ? 0 :
        !           132:                    ((r1->ru_ixrss+r1->ru_isrss+r1->ru_idrss) -
        !           133:                    (r0->ru_ixrss+r0->ru_idrss+r0->ru_isrss))/t);
        !           134:                break;
        !           135: 
        !           136:        case 'M':
        !           137:                printf("%d", r1->ru_maxrss/2);
        !           138:                break;
        !           139: 
        !           140:        case 'F':
        !           141:                printf("%d", r1->ru_majflt-r0->ru_majflt);
        !           142:                break;
        !           143: 
        !           144:        case 'R':
        !           145:                printf("%d", r1->ru_minflt-r0->ru_minflt);
        !           146:                break;
        !           147: 
        !           148:        case 'I':
        !           149:                printf("%d", r1->ru_inblock-r0->ru_inblock);
        !           150:                break;
        !           151: 
        !           152:        case 'O':
        !           153:                printf("%d", r1->ru_oublock-r0->ru_oublock);
        !           154:                break;
        !           155:        }
        !           156:        putchar('\n');
        !           157: }
        !           158: 
        !           159: pdeltat(t1, t0)
        !           160:        struct timeval *t1, *t0;
        !           161: {
        !           162:        struct timeval td;
        !           163: 
        !           164:        tvsub(&td, t1, t0);
        !           165:        printf("%d.%01d", td.tv_sec, td.tv_usec/100000);
        !           166: }
        !           167: 
        !           168: tvadd(tsum, t0)
        !           169:        struct timeval *tsum, *t0;
        !           170: {
        !           171: 
        !           172:        tsum->tv_sec += t0->tv_sec;
        !           173:        tsum->tv_usec += t0->tv_usec;
        !           174:        if (tsum->tv_usec > 1000000)
        !           175:                tsum->tv_sec++, tsum->tv_usec -= 1000000;
        !           176: }
        !           177: 
        !           178: tvsub(tdiff, t1, t0)
        !           179:        struct timeval *tdiff, *t1, *t0;
        !           180: {
        !           181: 
        !           182:        tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
        !           183:        tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
        !           184:        if (tdiff->tv_usec < 0)
        !           185:                tdiff->tv_sec--, tdiff->tv_usec += 1000000;
        !           186: }

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