From: Mateusz Poszwa <old4@o2.pl>
Date: Thu, 28 Jun 2012 09:22:00 +0000 (+0200)
Subject: Avoid division by zero when calculating CPU usage.
X-Git-Tag: 2.6~24
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=859a7690a6472ca6d700d29693d986125d11e4b6;p=i3%2Fi3status

Avoid division by zero when calculating CPU usage.
---

diff --git a/src/print_cpu_usage.c b/src/print_cpu_usage.c
index 7820840..ed17db3 100644
--- a/src/print_cpu_usage.c
+++ b/src/print_cpu_usage.c
@@ -40,7 +40,7 @@ void print_cpu_usage(yajl_gen json_gen, char *buffer, const char *format) {
         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;
+        diff_usage = (diff_total ? (1000 * (diff_total - diff_idle)/diff_total + 5)/10 : 0);
         prev_total = curr_total;
         prev_idle  = curr_idle;
 #elif defined(__FreeBSD__) || defined(__OpenBSD__)
@@ -71,7 +71,7 @@ void print_cpu_usage(yajl_gen json_gen, char *buffer, const char *format) {
         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;
+        diff_usage = (diff_total ? (1000 * (diff_total - diff_idle)/diff_total + 5)/10 : 0);
         prev_total = curr_total;
         prev_idle  = curr_idle;
 #else