[2] | 1 | /* |
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| 2 | * $Source: /afs/dev.mit.edu/source/repository/athena/bin/mon/mon.c,v $ |
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| 3 | * $Author: dgg $ |
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| 4 | * $Locker: $ |
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| 5 | * $Header: /afs/dev.mit.edu/source/repository/athena/bin/mon/mon.c,v 1.1 1984-12-13 12:00:58 dgg Exp $ |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef lint |
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| 9 | static char *rcsid_mon_c = "$Header: /afs/dev.mit.edu/source/repository/athena/bin/mon/mon.c,v 1.1 1984-12-13 12:00:58 dgg Exp $"; |
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| 10 | #endif lint |
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| 11 | |
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| 12 | /* |
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| 13 | * M O N . C |
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| 14 | * |
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| 15 | * A program to moniter system activity. |
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| 16 | * Rework of earlier mon program. 17 Aug 84 - Phillip Dykstra |
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| 17 | * |
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| 18 | */ |
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| 19 | |
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| 20 | #include "mon.h" |
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| 21 | #include <curses.h> |
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| 22 | #include <signal.h> |
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| 23 | |
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| 24 | struct sgttyb ttyb; |
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| 25 | int done(); |
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| 26 | |
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| 27 | /* |
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| 28 | * The namelist array. Uses to get the kernal variables needed |
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| 29 | * by all the MON routines. The order of this list MUST correspond |
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| 30 | * to the order of the definitions in mon.h |
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| 31 | */ |
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| 32 | struct nlist namelist[] = { |
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| 33 | { "_dk_busy" }, |
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| 34 | { "_dk_mspw" }, |
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| 35 | { "_hz" }, |
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| 36 | { "_cp_time" }, |
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| 37 | { "_rate" }, |
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| 38 | { "_total" }, |
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| 39 | { "_deficit" }, |
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| 40 | { "_dk_xfer" }, |
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| 41 | { "_mbdinit" }, |
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| 42 | { "_ubdinit" }, |
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| 43 | { "_ifnet" }, |
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| 44 | { "_dk_time" }, |
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| 45 | { "_dk_wds" }, |
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| 46 | { "_dk_seek" }, |
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| 47 | { "_tk_nin" }, |
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| 48 | { "_tk_nout" }, |
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| 49 | { "_avenrun" }, |
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| 50 | { "_cp2_time" }, /* 2nd CPU stats */ |
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| 51 | { "_slavestart" }, /* Used to detect 2nd CPU */ |
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| 52 | { 0 } |
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| 53 | }; |
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| 54 | |
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| 55 | main(argc,argv) |
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| 56 | int argc; |
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| 57 | char *argv[]; |
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| 58 | { |
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| 59 | register i; |
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| 60 | double f1, f2; |
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| 61 | extern char *ctime(); |
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| 62 | |
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| 63 | /* |
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| 64 | * fill the namelist and open /dev/kmem |
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| 65 | */ |
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| 66 | nlist("/vmunix", namelist); |
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| 67 | if(namelist[X_DK_BUSY].n_type == 0) { |
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| 68 | printf("dk_busy not found in /vmunix namelist\n"); |
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| 69 | exit(1); |
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| 70 | } |
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| 71 | kmem = open("/dev/kmem", 0); |
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| 72 | if(kmem < 0) { |
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| 73 | printf("cannot open /dev/kmem\n"); |
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| 74 | exit(1); |
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| 75 | } |
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| 76 | if(argc > 1) |
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| 77 | intv = (atoi(argv[1])); |
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| 78 | else intv = 1; |
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| 79 | |
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| 80 | /* |
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| 81 | * do all things that need to be done only once |
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| 82 | */ |
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| 83 | lseek(kmem, (long)namelist[X_DK_MSPW].n_value, 0); |
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| 84 | read(kmem, s.dk_mspw, sizeof s.dk_mspw); |
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| 85 | lseek(kmem, (long)namelist[X_HZ].n_value, 0); |
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| 86 | read(kmem, &hz, sizeof hz); |
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| 87 | read_names(); |
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| 88 | dualcpu = 0; |
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| 89 | if (namelist[X_SLAVESTART].n_type) |
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| 90 | dualcpu++; |
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| 91 | /* |
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| 92 | * monitor parameters forever |
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| 93 | */ |
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| 94 | worker(); |
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| 95 | /* NOTREACHED */ |
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| 96 | } |
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| 97 | |
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| 98 | char obuf[BUFSIZ]; /* Output buffer */ |
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| 99 | |
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| 100 | worker() |
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| 101 | { |
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| 102 | long clock; |
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| 103 | struct timeval tintv; |
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| 104 | int i, tin; |
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| 105 | |
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| 106 | /* set up signals */ |
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| 107 | signal(SIGINT, done); |
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| 108 | signal(SIGQUIT, done); |
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| 109 | |
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| 110 | /* set CBREAK mode with no buffering on stdin */ |
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| 111 | setbuf(stdin, 0); |
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| 112 | setbuf(stdout, obuf); |
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| 113 | ioctl(0, TIOCGETP, &ttyb); |
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| 114 | ttyb.sg_flags |= CBREAK; |
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| 115 | ioctl(fileno(stdin), TIOCSETP, (char *)&ttyb); |
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| 116 | |
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| 117 | tintv.tv_sec = intv; |
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| 118 | tintv.tv_usec = 0; |
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| 119 | initscr(); /* init curses package */ |
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| 120 | nifinit(); /* get initial net interfaces data */ |
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| 121 | dispinit(); /* initialize display */ |
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| 122 | for(;;){ |
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| 123 | vm(); |
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| 124 | io(); |
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| 125 | nifupdate(); |
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| 126 | /* get load average */ |
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| 127 | lseek(kmem, (long)namelist[LOADAV].n_value, 0); |
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| 128 | read(kmem, &loadavg[0], sizeof loadavg); |
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| 129 | mvprintw(0,13,"%4.2f %4.2f %4.2f %4.2f", loadavg[3], loadavg[0], loadavg[1], loadavg[2]); |
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| 130 | time(&clock); |
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| 131 | mvprintw(0,40,ctime(&clock)); |
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| 132 | dispupdate(); |
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| 133 | mvprintw(23, 0, "CMD> "); |
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| 134 | refresh(); |
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| 135 | tin = 1; |
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| 136 | i = select(2, &tin, (int *)0, (int *)0, &tintv); |
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| 137 | if (i && tin) { |
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| 138 | i = getchar(); |
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| 139 | if (i == 12) |
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| 140 | dispinit(); |
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| 141 | else if (i == 'q') |
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| 142 | done(); |
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| 143 | } |
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| 144 | } |
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| 145 | } |
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| 146 | |
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| 147 | /* |
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| 148 | * DONE - put the term back in non CBREAK mode and exit. |
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| 149 | */ |
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| 150 | done() |
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| 151 | { |
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| 152 | ioctl(0, TIOCGETP, &ttyb); |
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| 153 | ttyb.sg_flags &= ~CBREAK; |
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| 154 | ioctl(fileno(stdin), TIOCSETP, (char *)&ttyb); |
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| 155 | mvprintw(23,0,"\n"); |
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| 156 | refresh(); |
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| 157 | exit(1); |
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| 158 | } |
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