Add support for cpu usage on FreeBSD

1 files changed, 25 insertions, 0 deletions

diff --git a/src/print_cpu_usage.c b/src/print_cpu_usage.c
index d5913b0..71fc5b7 100644
--- a/src/print_cpu_usage.c
+++ b/src/print_cpu_usage.c
@@ -4,6 +4,12 @@
 #include <stdio.h>
 #include <string.h>
 
+#ifdef __FreeBSD__
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <sys/dkstat.h>
+#endif
+
 #include "i3status.h"
 
 static int prev_total = 0;
@@ -36,6 +42,25 @@ void print_cpu_usage(const char *format) {
         prev_total = curr_total;
         prev_idle  = curr_idle;
 #endif
+#if defined(__FreeBSD__)
+        size_t size;
+        long cp_time[CPUSTATES];
+        size = sizeof cp_time;
+        if (sysctlbyname("kern.cp_time", &cp_time, &size, NULL, 0) < 0){
+                return;
+        }
+        curr_user = cp_time[CP_USER];
+        curr_nice = cp_time[CP_NICE];
+        curr_system = cp_time[CP_SYS];
+        curr_idle = cp_time[CP_IDLE];
+        curr_total = curr_user + curr_nice + curr_system + curr_idle;
+        diff_idle  = curr_idle - prev_idle;
+        diff_total = curr_total - prev_total;
+        diff_usage = (1000 * (diff_total - diff_idle)/diff_total + 5)/10;
+        prev_total = curr_total;
+        prev_idle  = curr_idle;
+
+#endif
         for (walk = format; *walk != '\0'; walk++) {
                 if (*walk != '%') {
                         putchar(*walk);