making a perfmeter

Makefile

@@ -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 $@

core/sysmetrics.c

@@ -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);
 

core/sysmetrics.h

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

core/t.c

@@ -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;
 }

essai.c

@@ -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;
 }