projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| c31d941c BJ |
1 | #include <stdio.h> |
| 2 | #include <sys/types.h> | |
| 3 | #include <a.out.h> | |
| 4 | #include <time.h> | |
| 5 | ||
| 6 | struct tm *localtime(); | |
| 7 | ||
| 8 | #define DIV60(t) ((t+30)/60) /* x/60 rounded */ | |
| 9 | ||
| 10 | struct nlist nl[] = { | |
| 11 | #define X_BOOTIME 0 | |
| 12 | { "_bootime" }, | |
| 13 | #define X_AVENRUN 1 | |
| 14 | { "_avenrun" }, | |
| 15 | { 0 } | |
| 16 | }; | |
| 17 | ||
| 18 | time_t now, bootime; | |
| 19 | double avenrun[3]; | |
| 20 | ||
| 21 | int kmem; | |
| 22 | ||
| 23 | main(argc, argv) | |
| 24 | char **argv; | |
| 25 | { | |
| 26 | char obuf[BUFSIZ]; | |
| 27 | register int i, days; | |
| 28 | register time_t uptime; | |
| 29 | register struct tm *nowt; | |
| 30 | ||
| 31 | setbuf(stdout, obuf); | |
| 32 | nlist("/vmunix" , nl); | |
| 33 | if (nl[0].n_value == 0) { | |
| 34 | fprintf(stderr, "No namelist\n"); | |
| 35 | exit(1); | |
| 36 | } | |
| 37 | kmem = open("/dev/kmem", 0); | |
| 38 | if (kmem < 0) { | |
| 39 | fprintf(stderr ,"No kmem\n"); | |
| 40 | exit(1); | |
| 41 | } | |
| 42 | time(&now); | |
| 43 | nowt = localtime(&now); | |
| 44 | prtat(nowt); | |
| 45 | lseek(kmem, (long)nl[X_BOOTIME].n_value, 0); | |
| 46 | read(kmem, &bootime, sizeof (bootime)); | |
| 47 | uptime = now - bootime; | |
| 48 | printf(" up"); | |
| 49 | days = uptime / (60*60*24); | |
| 50 | if (days > 0) { | |
| 51 | printf(" %d day%s, ", days, days>1?"s":""); | |
| 52 | uptime %= (60*60*24); | |
| 53 | } | |
| 54 | prttime(DIV60(uptime), ""); | |
| 55 | printf("\t\t"); | |
| 56 | printf("load average:"); | |
| 57 | lseek(kmem, (long)nl[X_AVENRUN].n_value, 0); | |
| 58 | read(kmem, avenrun, sizeof(avenrun)); | |
| 59 | for (i = 0; i < 3; i++) { | |
| 60 | printf(" %.2f", avenrun[i]); | |
| 61 | if (i < 2) | |
| 62 | printf(","); | |
| 63 | } | |
| 64 | printf("\n"); | |
| 65 | } | |
| 66 | ||
| 67 | prttime(tim, tail) | |
| 68 | time_t tim; | |
| 69 | char *tail; | |
| 70 | { | |
| 71 | register int didhrs = 0; | |
| 72 | ||
| 73 | if (tim >= 60) { | |
| 74 | printf("%3d:", tim/60); | |
| 75 | didhrs++; | |
| 76 | } else { | |
| 77 | printf(" "); | |
| 78 | } | |
| 79 | tim %= 60; | |
| 80 | if (tim > 0 || didhrs) { | |
| 81 | printf(didhrs&&tim<10 ? "%02d" : "%2d", tim); | |
| 82 | } else { | |
| 83 | printf(" "); | |
| 84 | } | |
| 85 | printf("%s", tail); | |
| 86 | } | |
| 87 | ||
| 88 | /* prtat prints a 12 hour time given a pointer to a time of day */ | |
| 89 | prtat(p) | |
| 90 | struct tm *p; | |
| 91 | { | |
| 92 | register int t, pm; | |
| 93 | ||
| 94 | t = p -> tm_hour; | |
| 95 | pm = (t > 11); | |
| 96 | if (t > 11) | |
| 97 | t -= 12; | |
| 98 | if (t == 0) | |
| 99 | t = 12; | |
| 100 | prttime(t*60 + p->tm_min, pm ? "pm" : "am"); | |
| 101 | } |