From 37596ac18805f4d058cbbfb59694af90ff579adb Mon Sep 17 00:00:00 2001
From: Preston Van Loon <preston@prysmaticlabs.com>
Date: Fri, 20 Sep 2019 11:05:08 -0700
Subject: [PATCH] Is len(map) threadsafe? (#3535)

---
 beacon-chain/sync/peerstatus/peer_statuses.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/beacon-chain/sync/peerstatus/peer_statuses.go b/beacon-chain/sync/peerstatus/peer_statuses.go
index b9573f113..c0fae8865 100644
--- a/beacon-chain/sync/peerstatus/peer_statuses.go
+++ b/beacon-chain/sync/peerstatus/peer_statuses.go
@@ -35,6 +35,8 @@ func Delete(pid peer.ID) {
 
 // Count of peer statuses in cache. Threadsafe.
 func Count() int {
+	lock.RLock()
+	defer lock.RUnlock()
 	return len(peerStatuses)
 }