From 99f624011b3ae0e6088ffcb86dc414e3750ad5c9 Mon Sep 17 00:00:00 2001
From: Christopher Vogt <oss.nsp@cvogt.org>
Date: Tue, 26 Apr 2016 10:57:09 -0400
Subject: compute logged times during startup as delta from beginning

---
 cbt | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'cbt')

diff --git a/cbt b/cbt
index 867276a..a893dff 100755
--- a/cbt
+++ b/cbt
@@ -8,6 +8,19 @@
 # - reduction of dependencies
 # - performance improvements
 
+start_seconds=$(gdate +"%s")
+start_nanos=1$(gdate +"%N")
+
+time_taken() {
+	i=$(( $(gdate +"%s") - start_seconds ))
+	n=$(( $(( 1$(gdate +"%N") - start_nanos )) / 1000000 ))
+	if [[ ( "$n" < 0 ) ]]; then
+		i=$(( i-1 ))
+		n=$(( n+1000 ))
+	fi
+	echo "$i.$n"
+}
+
 # utility function to log message to stderr with stating the time
 log () {
 	msg=$1
@@ -23,8 +36,8 @@ log () {
 		which gdate 2>&1 > /dev/null
 		gdate_installed=$?
 		if [ $gdate_installed -eq 0 ]; then
-			i=`gdate +"%S.%N"`
-			echo "[$i] $msg" 1>&2
+			delta=$(time_taken)
+			echo "[$delta] $msg" 1>&2
 		fi
 	fi
 }
-- 
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