X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Futils_latency.c;h=7f60e11da80796466819241d4966d0c31bb5bf69;hb=a3b8297ca4e9b3f5e3652a347333526546306041;hp=cfe90e27ac97f8869d31cf68c33f32d37f3f55fb;hpb=85349dfd72e43a7dbeab8d8af2d77b779121203a;p=collectd.git

diff --git a/src/utils_latency.c b/src/utils_latency.c
index cfe90e27..7f60e11d 100644
--- a/src/utils_latency.c
+++ b/src/utils_latency.c
@@ -1,6 +1,6 @@
 /**
  * collectd - src/utils_latency.c
- * Copyright (C) 2013  Florian Forster
+ * Copyright (C) 2013       Florian Forster
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -102,7 +102,7 @@ void change_bin_width (latency_counter_t *lc, size_t val) /* {{{ */
       DEBUG("utils_latency: change_bin_width: fixed all bins");
   }
 
-  DEBUG("utils_latency: change_bin_width: val-[%ld], oldBinWidth-[%d], "
+  DEBUG("utils_latency: change_bin_width: val-[%zu], oldBinWidth-[%d], "
           "newBinWidth-[%d], required_bin_width-[%f], "
           "required_bin_width_logbase2-[%f]",
           val, old_bin_width, new_bin_width, required_bin_width,
@@ -209,7 +209,7 @@ cdtime_t latency_counter_get_average (latency_counter_t *lc) /* {{{ */
 {
   double average;
 
-  if (lc == NULL)
+  if ((lc == NULL) || (lc->num == 0))
     return (0);
 
   average = CDTIME_T_TO_DOUBLE (lc->sum) / ((double) lc->num);
@@ -227,7 +227,7 @@ cdtime_t latency_counter_get_percentile (latency_counter_t *lc,
   int sum;
   size_t i;
 
-  if ((lc == NULL) || !((percent > 0.0) && (percent < 100.0)))
+  if ((lc == NULL) || (lc->num == 0) || !((percent > 0.0) && (percent < 100.0)))
     return (0);
 
   /* Find index i so that at least "percent" events are within i+1 ms. */