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 char copyright[] = 9 "@(#) Copyright (c) 1980 Regents of the University of California.\n\ 10 All rights reserved.\n"; 11 #endif not lint 12 13 #ifndef lint 14 static char sccsid[] = "@(#)main.c 5.9 (Berkeley) 04/25/91"; 15 #endif not lint 16 17 #include "systat.h" 18 #include <varargs.h> 19 #include <paths.h> 20 21 static struct nlist nlst[] = { 22 #define X_CCPU 0 23 { "_ccpu" }, 24 #define X_FSCALE 1 25 { "_fscale" }, 26 #define X_HZ 2 27 { "_hz" }, 28 #define X_PHZ 3 29 { "_phz" }, 30 { "" } 31 }; 32 33 int kmem = -1; 34 int mem = -1; 35 int swap = -1; 36 int naptime = 5; 37 38 void die(), display(), suspend(); 39 40 sig_t sigtstpdfl; 41 int dellave; 42 43 static WINDOW *wload; /* one line window for load average */ 44 45 main(argc, argv) 46 int argc; 47 char **argv; 48 { 49 fixpt_t ccpu; 50 51 argc--, argv++; 52 while (argc > 0) { 53 if (argv[0][0] == '-') { 54 struct cmdtab *p; 55 56 p = lookup(&argv[0][1]); 57 if (p == (struct cmdtab *)-1) { 58 fprintf(stderr, "%s: unknown request\n", 59 &argv[0][1]); 60 exit(1); 61 } 62 curcmd = p; 63 } else { 64 naptime = atoi(argv[0]); 65 if (naptime <= 0) 66 naptime = 5; 67 } 68 argc--, argv++; 69 } 70 nlist(_PATH_UNIX, nlst); 71 if (nlst[X_CCPU].n_type == 0) { 72 fprintf(stderr, "Couldn't namelist %s.\n", _PATH_UNIX); 73 exit(1); 74 } 75 kmemf = _PATH_KMEM; 76 kmem = open(kmemf, O_RDONLY); 77 if (kmem < 0) { 78 perror(kmemf); 79 exit(1); 80 } 81 memf = _PATH_MEM; 82 mem = open(memf, O_RDONLY); 83 if (mem < 0) { 84 perror(memf); 85 exit(1); 86 } 87 swapf = _PATH_DRUM; 88 swap = open(swapf, O_RDONLY); 89 if (swap < 0) { 90 perror(swapf); 91 exit(1); 92 } 93 signal(SIGINT, die); 94 signal(SIGQUIT, die); 95 signal(SIGTERM, die); 96 97 /* 98 * Initialize display. Load average appears in a one line 99 * window of its own. Current command's display appears in 100 * an overlapping sub-window of stdscr configured by the display 101 * routines to minimize update work by curses. 102 */ 103 initscr(); 104 CMDLINE = LINES - 1; 105 wnd = (*curcmd->c_open)(); 106 if (wnd == NULL) { 107 fprintf(stderr, "Couldn't initialize display.\n"); 108 die(); 109 } 110 wload = newwin(1, 0, 3, 20); 111 if (wload == NULL) { 112 fprintf(stderr, "Couldn't set up load average window.\n"); 113 die(); 114 } 115 116 gethostname(hostname, sizeof (hostname)); 117 ccpu = getword(nlst[X_CCPU].n_value); 118 fscale = getword(nlst[X_FSCALE].n_value); 119 lccpu = log((double) ccpu / fscale); 120 hz = getword(nlst[X_HZ].n_value); 121 phz = getword(nlst[X_PHZ].n_value); 122 (*curcmd->c_init)(); 123 curcmd->c_flags |= CF_INIT; 124 labels(); 125 126 known[0].k_uid = -1; 127 known[0].k_name[0] = '\0'; 128 numknown = 1; 129 procs[0].pid = -1; 130 strcpy(procs[0].cmd, "<idle>"); 131 numprocs = 1; 132 dellave = 0.0; 133 134 signal(SIGALRM, display); 135 sigtstpdfl = signal(SIGTSTP, suspend); 136 display(); 137 noecho(); 138 crmode(); 139 keyboard(); 140 /*NOTREACHED*/ 141 } 142 143 labels() 144 { 145 if (curcmd->c_flags & CF_LOADAV) { 146 mvaddstr(2, 20, 147 "/0 /1 /2 /3 /4 /5 /6 /7 /8 /9 /10"); 148 mvaddstr(3, 5, "Load Average"); 149 } 150 (*curcmd->c_label)(); 151 #ifdef notdef 152 mvprintw(21, 25, "CPU usage on %s", hostname); 153 #endif 154 refresh(); 155 } 156 157 void 158 display() 159 { 160 register int i, j; 161 162 /* Get the load average over the last minute. */ 163 (void) getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0])); 164 (*curcmd->c_fetch)(); 165 if (curcmd->c_flags & CF_LOADAV) { 166 j = 5.0*avenrun[0] + 0.5; 167 dellave -= avenrun[0]; 168 if (dellave >= 0.0) 169 c = '<'; 170 else { 171 c = '>'; 172 dellave = -dellave; 173 } 174 if (dellave < 0.1) 175 c = '|'; 176 dellave = avenrun[0]; 177 wmove(wload, 0, 0); wclrtoeol(wload); 178 for (i = (j > 50) ? 50 : j; i > 0; i--) 179 waddch(wload, c); 180 if (j > 50) 181 wprintw(wload, " %4.1f", avenrun[0]); 182 } 183 (*curcmd->c_refresh)(); 184 if (curcmd->c_flags & CF_LOADAV) 185 wrefresh(wload); 186 wrefresh(wnd); 187 move(CMDLINE, col); 188 refresh(); 189 alarm(naptime); 190 } 191 192 load() 193 { 194 double avenrun[3]; 195 196 (void) getloadavg(avenrun, sizeof(avenrun)/sizeof(avenrun[0])); 197 mvprintw(CMDLINE, 0, "%4.1f %4.1f %4.1f", 198 avenrun[0], avenrun[1], avenrun[2]); 199 clrtoeol(); 200 } 201 202 void 203 die() 204 { 205 move(CMDLINE, 0); 206 clrtoeol(); 207 refresh(); 208 endwin(); 209 exit(0); 210 } 211 212 error(va_alist) 213 va_dcl 214 { 215 va_list ap; 216 char *fmt, msg[200]; 217 218 va_start(ap); 219 fmt = va_arg(ap, char *); 220 (void) vsnprintf(msg, sizeof msg, fmt, ap); 221 va_end(ap); 222 mvaddstr(CMDLINE, 0, msg); 223 clrtoeol(); 224 refresh(); 225 } 226