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Avoid division by zero when calculating CPU usage.

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Mateusz Poszwa 2012-06-28 11:22:00 +02:00 committed by Michael Stapelberg
parent 10ed9efff4
commit 859a7690a6
1 changed files with 2 additions and 2 deletions
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4
src/print_cpu_usage.c
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@ -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