measure: add missing lock *cough*measures-cmd

1 files changed, 6 insertions, 0 deletions

diff --git a/measure/measure.go b/measure/measure.go
index e4864fb03f..d08c49e7c9 100644
--- a/measure/measure.go
+++ b/measure/measure.go
@@ -22,6 +22,7 @@ package measure
 import (
	"fmt"
	"io"
+	"sync"
	"time"
 )
 
@@ -55,8 +56,13 @@ const maxSize = 100
 // for some nice work in this area
 var allMeasures []string
 
+var mu sync.Mutex
+
 // addMeasure is an internal helper
 func addMeasure(m *Measure) {
+	mu.Lock()
+	defer mu.Unlock()
+
	msg := fmt.Sprintf("%s took %v", m.action, m.end.Sub(m.start))
	allMeasures = append(allMeasures, msg)
	if len(allMeasures) > maxSize {