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making a perfmeter

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This commit is contained in:
tth 2019-01-30 19:14:40 +01:00
parent b4aa5445a2
commit 67b26a733b
5 changed files with 47 additions and 20 deletions
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4
Makefile
View File

@ -4,14 +4,14 @@
CC = gcc
CCOPT = -Wall -g
CLIB = core/libdd2m-core.a
CLIB = core/libdd2m-core.a viz/libdd2m-viz.a
all: essai fake-values
# ---------------------------------------------
essai: essai.c Makefile $(CLIB)
$(CC) ${CCOPT} $< $(CLIB) -o $@
$(CC) ${CCOPT} $< $(CLIB) -lncurses -o $@
fake-values: fake-values.c Makefile $(CLIB)
$(CC) ${CCOPT} $< $(CLIB) -o $@

8
core/sysmetrics.c
View File

@ -14,10 +14,10 @@ extern int verbosity;
/* --------------------------------------------------------------- */
int get_loadavg(double *where)
int get_loadavg(float *where)
{
FILE *fp;
double loads[3];
float loads[3];
int foo;
if ( ! (fp=fopen("/proc/loadavg", "r")) ) {
@ -25,10 +25,10 @@ if ( ! (fp=fopen("/proc/loadavg", "r")) ) {
return -1;
}
foo = fscanf(fp, "%lf %lf %lf", loads, loads+1, loads+2);
foo = fscanf(fp, "%f %f %f", loads, loads+1, loads+2);
if (3 != foo) fprintf(stderr, "%s : read %d vals\n", __func__, foo);
memcpy(where, loads, 3 * sizeof(double));
memcpy(where, loads, 3 * sizeof(float));
fclose(fp);

2
core/sysmetrics.h
View File

@ -1,4 +1,4 @@
int get_loadavg(double *where);
int get_loadavg(float *where);

6
core/t.c
View File

@ -18,16 +18,16 @@ Configuration config;
/* ---------------------------------------------------------------- */
int essai_sysmetrics(int k)
{
double dvalues3[3];
float fvalues3[3];
int foo;
foo = get_loadavg(dvalues3);
foo = get_loadavg(fvalues3);
if (foo) {
fprintf(stderr, "err get load avg %d\n", foo);
return -1;
}
printf("load avg %f %f %f\n", dvalues3[0], dvalues3[1], dvalues3[2]);
printf("load avg %f %f %f\n", fvalues3[0], fvalues3[1], fvalues3[2]);
return 0;
}

47
essai.c
View File

@ -6,21 +6,44 @@
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <curses.h>
#include <time.h>
#include "core/utils.h"
#include "core/sysmetrics.h"
#include "viz/curses/ecran.h"
int verbosity;
/* --------------------------------------------------------------- */
int affiche_loadavg(int nbloops, int k)
{
int idx, foo;
float lds[3];
for (idx=0; idx<nbloops; idx++) {
foo = get_loadavg(lds);
if (foo) fprintf(stderr, "get loadavg -> %d\n", foo);
foo = aff7segs_float(stdscr, 4, 9, lds[0]);
foo = aff7segs_float(stdscr, 14, 9, lds[1]);
foo = aff7segs_float(stdscr, 24, 9, lds[2]);
usleep(200*1000);
}
return 0;
}
/* --------------------------------------------------------------- */
static void finish(int signal)
{
endwin(); exit(0);
}
/* --------------------------------------------------------------- */
int main(int argc, char *argv[])
{
int opt, foo;
double loads[3];
int il[3];
while ((opt = getopt(argc, argv, "v")) != -1) {
switch (opt) {
@ -29,15 +52,19 @@ while ((opt = getopt(argc, argv, "v")) != -1) {
}
}
foo = get_loadavg(loads);
if (foo) fprintf(stderr, "get loadavg -> %d\n", foo);
for (foo=0; foo<3; foo++) {
il[foo] = ((int)(loads[foo] * 90.0)) & 0x3ff;
if (verbosity)
fprintf(stderr, "%f -> %d\n", loads[foo], il[foo]);
}
printf("%ld %d %d %d %d\n", time(NULL), getpid()%84, il[0], il[1], il[2]);
initscr();
nonl(); cbreak(); noecho();
keypad(stdscr, TRUE); /* acces aux touches 'curseur' */
fond_ecran(" Demonstrator ");
affiche_loadavg(10000, 0);
/*
* plop, on a fini, il faut restaurer la console
*/
finish(0);
return 0;
}