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ttyload
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checkpoint checkin... 

headers done (in prelim manner, anyway);
clock scrolling at bottom done?  not fully tested...
This commit is contained in:
lindes 1996-06-16 19:28:21 +00:00
parent 41da16c470
commit b0cf3f56e1
2 changed files with 211 additions and 41 deletions
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235
ttyload.c
View File

@ -6,12 +6,13 @@
* Copyright 1996 by David Lindes
* all right reserved.
*
* Version information: $Id: ttyload.c,v 1.3 1996-06-16 02:53:30 lindes Exp $
* Version information: $Id: ttyload.c,v 1.4 1996-06-16 19:28:21 lindes Exp $
*
*/
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <sys/sysmp.h>
@ -20,10 +21,42 @@
#include "ttyload.h"
char *c="$Id: ttyload.c,v 1.3 1996-06-16 02:53:30 lindes Exp $";
#define HEIGHTPAD 9
#define WIDTHPAD 14
#define CLOCKWIDTH 7
#define HOSTLENGTH 20
#define MINROWS (HEIGHTPAD + 6)
#define MINCOLS (WIDTHPAD + 6)
char *c="$Id: ttyload.c,v 1.4 1996-06-16 19:28:21 lindes Exp $";
char *kmemfile = "/dev/kmem",
strbuf[BUFSIZ],
*optstring = "i:",
*usage =
"Usage: %s [-i secs]\n"
" -i secs\n"
" Alter the number of seconds in "
"the interval between refreshes\n"
" The default is 4, and the minimum "
"is 1, which is silently clamped.\n";
int kmemfd,clockpad,clocks;
clock_info *theclocks;
/* The following two variables should probably be assigned
using some sort of real logic, rather than these hard-coded
defaults, but the defaults work for now... */
int rows = 40,
cols = 80,
intsecs = 4,
debug = 3,
theclock = 0,
height, width/* ,
c,i,j,k */;
char *kmemfile = "/dev/kmem";
int kmemfd;
void getload(long,long,load_list *);
int compute_height(load_t,load_t,int);
@ -31,8 +64,6 @@ void showloads(load_list *);
void clear_screen();
void cycle_load_list(load_list*,load_list,int);
int debug=3;
int main(argc,argv,envp)
int argc;
char *argv[],
@ -41,13 +72,82 @@ int main(argc,argv,envp)
float multiplier;
load_t loadaddr;
load_list *loadavgs, newload;
int i,j,k;
int c,i,j,k,errflag=0;
char *basename;
char hostname[HOSTLENGTH];
time_t thetime;
struct tm *thetimetm;
while((c = getopt(argc,argv,optstring)) != EOF)
{
switch(c)
{
case 'i':
intsecs = atoi(optarg);
break;
default:
errflag++;
break; /* redundant */
}
}
if(errflag)
{
fprintf(stderr,usage,basename);
exit(1);
}
if(gethostname(hostname,HOSTLENGTH))
{
perror("NOTICE: couldn't determine hostname");
strcpy(hostname,"localhost");
sleep(2);
}
basename = (char *)strrchr(*argv,'/');
if(!basename)
basename = *argv;
intsecs = MAX(1,intsecs); /* must be positive */
height = rows - HEIGHTPAD;
width = cols - WIDTHPAD;
clocks = MAX(width/intsecs,width/CLOCKWIDTH);
clockpad = (width / clocks) - CLOCKWIDTH;
if(rows < MINROWS)
{
fprintf(stderr,"Sorry, %s requires at least %d rows to run.\n",
basename,
MINROWS,
NULL);
exit(1);
}
if(cols < MINCOLS)
{
fprintf(stderr,"Sorry, %s requires at least %d cols to run.\n",
basename,
MINCOLS,
NULL);
exit(1);
}
loadavgs = (load_list *)calloc(width,sizeof(load_list));
theclocks = (clock_info *)calloc(clocks,sizeof(clock_info));
if(!loadavgs)
{
perror("calloc for loadavgs failed");
exit(1);
}
if(!theclocks)
{
perror("calloc for clocks failed");
exit(1);
}
for(i=0;i<clocks;i++)
{
theclocks[i].pos = -1;
}
loadaddr = sysmp(MP_KERNADDR,MPKA_AVENRUN);
@ -70,11 +170,57 @@ int main(argc,argv,envp)
{
if(i != 0)
{
sleep(intsec);
sleep(intsecs);
}
time(&thetime);
thetimetm = localtime(&thetime);
getload(kmemfd,loadaddr,&loadavgs[i]);
if(((thetimetm->tm_sec) / intsecs) == 0)
{
if(!ascftime(strbuf,"^%H:%M",thetimetm))
{
/* This should never happen, I hope... */
perror("ascftime failed");
exit(1);
}
theclocks[theclock].pos = i;
strcpy(theclocks[theclock].clock,strbuf);
theclock++;
theclock %= clocks;
if(theclock >= clocks)
{
/* Hopefully, I'll get this to the point
where it well never happen... As I first
write it, I'm fairly certain it will, but
that should be fixable... */
fprintf(stderr,"Internal error: too many clocks!");
exit(1);
}
}
if(!ascftime(strbuf,"%T",thetimetm))
{
/* This should never happen, I hope... */
perror("ascftime failed");
exit(1);
}
clear_screen();
printf("%-1$*6$.*7$s %2$.2f, %.2f, %.2f %s\n\n",
hostname,
loadavgs[i].one_minute / 1024.,
loadavgs[i].five_minute / 1024.,
loadavgs[i].fifteen_minute / 1024.,
strbuf,
HOSTLENGTH+1,HOSTLENGTH,
NULL);
if(debug > 3)
printf("Load averages: %f, %f, %f\n",
loadavgs[i].one_minute / 1024.,
@ -103,8 +249,8 @@ void showloads(loadavgs)
{
load_list min = {LONG_MAX-1,LONG_MAX-1,LONG_MAX-1,0,0,0},
max = {0,0,0,0,0,0};
load_t omin,omax,
lmin,lmax;
load_t lmin,lmax;
float omin,omax;
int i,j,k;
if(debug>3)
@ -152,27 +298,38 @@ void showloads(loadavgs)
loadavgs[0].fifteen_minute,
NULL);
sleep(1);
printf("MIN Load averages: %f, %f, %f\n",
min.one_minute / 1024.,
min.five_minute / 1024.,
min.fifteen_minute / 1024.,
NULL);
printf("MAX Load averages: %f, %f, %f\n",
max.one_minute / 1024.,
max.five_minute / 1024.,
max.fifteen_minute / 1024.,
NULL);
}
printf("MIN Load averages: %f, %f, %f\n",
min.one_minute / 1024.,
min.five_minute / 1024.,
min.fifteen_minute / 1024.,
NULL);
printf("MAX Load averages: %f, %f, %f\n",
max.one_minute / 1024.,
max.five_minute / 1024.,
max.fifteen_minute / 1024.,
NULL);
lmin=MIN(min.one_minute,MIN(min.five_minute,min.fifteen_minute));
lmax=MAX(max.one_minute,MAX(max.five_minute,max.fifteen_minute));
if(debug > 3)
printf("Overall MIN, MAX: %f, %f\n",lmin/1024.,lmax/1024.);
omin = lmin / 1024;
omax = (lmax / 1024) + 1;
omin = (int)(lmin / 1024);
lmin = 1024 * omin;
if((lmax / 1024.) < .25)
{
omax = .25;
}
else if((lmax / 1024.) < .5)
{
omax = .5;
}
else
{
omax = (int)(lmax / 1024) + 1;
}
lmax = 1024 * omax;
if(debug > 3)
@ -206,11 +363,10 @@ void showloads(loadavgs)
}
}
clear_screen();
for(j=0;j<height;j++)
for(j=0;j<=height;j++)
{
printf("%6.2f ",
( ( ((float)omax) * (height-j)) / (height))
(((omax)*(height-j)) / (height))
);
for(i=0;i<width;i++)
{
@ -226,9 +382,25 @@ void showloads(loadavgs)
printf("\n");
}
printf("\n Key:\n");
printf(" 1 min: %s, 5 min: %s, 15 min: %s\n"
" 1&5 same: %s, 1&15: %s, 5&15: %s, all: %s\n",
memset(strbuf,' ',BUFSIZ);
strbuf[cols-1] = '\0';
for(i=0;i<clocks;i++)
{
if(theclocks[i].pos > 0)
{
strncpy(
&strbuf[9+theclocks[i].pos],
theclocks[i].clock,
6,
NULL);
}
}
printf("%s\n Legend:\n"
" 1 min: %s, 5 min: %s, 15 min: %s\n"
" 1&5 same: %s, 1&15: %s, 5&15: %s, all: %s\n",
strbuf,
loadstrings[1],
loadstrings[2],
loadstrings[4],
@ -284,4 +456,9 @@ void cycle_load_list(loadavgs,newload,width)
loadavgs[i] = loadavgs[i+1];
}
loadavgs[i] = newload;
for(i=0;i<clocks;i++)
{
theclocks[i].pos--;
}
}

17
ttyload.h
View File

@ -8,7 +8,7 @@
*
*/
char *h="$Id: ttyload.h,v 1.2 1996-06-16 02:53:51 lindes Exp $";
char *h="$Id: ttyload.h,v 1.3 1996-06-16 19:28:21 lindes Exp $";
#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))
@ -39,14 +39,7 @@ typedef struct load_list {
int height15;
} load_list;
/* The following variables should probably be assigned using
some sort of real logic, rather than these hard-coded
defaults, but the defaults work for now... */
int rows = 40,
cols = 80,
height = 35,
width = 70,
intsec = 1,
i,j,k;
typedef struct clock_info {
int pos;
char clock[6];
} clock_info;