early out if no entries in wantlist

ipfs · Jan 11, 2015 · 1c7b427 · 1c7b427
1 parent 456719e
commit 1c7b427
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/exchange/bitswap/bitswap.go b/exchange/bitswap/bitswap.go
@@ -229,6 +229,12 @@ func (bs *bitswap) sendWantlistToProviders(ctx context.Context) {
 	log.Debugf("begin")
 	defer log.Debugf("end")
 
+	entries := bs.wantlist.Entries()
+	if len(entries) == 0 {
+		log.Debug("No entries in wantlist, skipping send routine.")
+		return
+	}
+
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 
@@ -237,7 +243,7 @@ func (bs *bitswap) sendWantlistToProviders(ctx context.Context) {
 
 	// Get providers for all entries in wantlist (could take a while)
 	wg := sync.WaitGroup{}
-	for _, e := range bs.wantlist.Entries() {
+	for _, e := range entries {
 		wg.Add(1)
 		go func(k u.Key) {
 			defer wg.Done()