$OpenBSD: patch-wmcube_wmcube_c,v 1.1.1.1 2001/01/12 15:24:42 naddy Exp $
--- wmcube/wmcube.c.orig	Mon Oct 23 22:11:47 2000
+++ wmcube/wmcube.c	Thu Jan 11 15:56:26 2001
@@ -53,6 +53,10 @@
 #include <kvm.h>
 #endif
 
+#ifdef OPENBSD
+#include <kvm.h>
+#endif
+
 #include "../wmgeneral/wmgeneral.h"
 #include "../wmgeneral/misc.h"
 
@@ -127,6 +131,11 @@ static kvm_t            *kd;
 static struct nlist     nlst[] = { {"_cp_time"}, {0} };
 #endif
 
+#ifdef OPENBSD
+static kvm_t            *kd;
+static struct nlist     nlst[] = { {"_cp_time"}, {0} };
+#endif
+
 int main(int argc, char **argv)
 {
 	int		j, i = 0, rot_speed = 0, cpu_usage = 0, rot_step = 1;
@@ -858,6 +867,10 @@ void print_help() {
 	printf("  -n  : exclude \"nice\" processes. (default OFF)\n");
 #endif
 
+#ifdef OPENBSD
+	printf("  -n  : exclude \"nice\" processes. (default OFF)\n");
+#endif
+
 	printf("  -b  : draw the cube in a brighter color. (default OFF)\n");
 	printf("  -i  : invert cube speed. (default OFF)\n");
 	printf("  -p  : do not display cpu-load (default OFF)\n");
@@ -1273,16 +1286,54 @@ int calc_cpu_total() {
 
 #elif defined OPENBSD
 
+#include <nlist.h>
+#include <fcntl.h>
+#include <sys/dkstat.h>
+
 int init_calc_cpu()
 {
-	return 0;
+
+        if ((kd = kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open")) == NULL)
+        {
+                printf("\nError: unable to open kvm\n\n");
+                exit(0);
+        }
+        kvm_nlist(kd, nlst);
+        if (nlst[0].n_type == 0) 
+        {
+                printf("\nError: unable to get nlist\n\n");
+                exit(1);
+        }
+
+        return 0;
 }
 
 int calc_cpu_total() {
-        double avenrun[3];
-        
-        (void) getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0]));
-        return(((5.0*avenrun[0] + 0.5) > 50) ? 50 : (5.0*avenrun[0] + 0.5))*2;
+        int total, used, t=0;
+        static int previous_total = 0, previous_used = 0;
+        int cpu,nice,system,idle;
+        unsigned long int cpu_time[CPUSTATES];
+
+        if (kvm_read(kd, nlst[0].n_value, &cpu_time, sizeof(cpu_time))
+                != sizeof(cpu_time))
+        {
+                printf("\nError reading kvm\n\n");
+                exit(0);
+        }
+
+        cpu = cpu_time[CP_USER];
+        nice = cpu_time[CP_NICE];
+        system = cpu_time[CP_SYS];
+        idle = cpu_time[CP_IDLE];
+
+        used = cpu + system + use_nice*nice;
+        total = used + idle + (1-use_nice)*nice;
+
+        t = 100 * (double)(used - previous_used) / (double)(total - previous_total);
+        previous_total = total;
+        previous_used = used;
+
+        return t;
 }