From 852d6a3be5a4bb2d9c3c6ee42fd4fafd64e08dc8 Mon Sep 17 00:00:00 2001
From: David Baker <dave@matrix.org>
Date: Wed, 22 Aug 2018 14:34:02 +0100
Subject: [PATCH] Fix CPU spin on joining large room

checkIfAlone() filters the whole member list, which is fine until
we do it once for every membership event, then we have an n^2
problem. Move it into the rate limited function.

Fixes https://github.com/vector-im/riot-web/issues/7163
---
 src/components/structures/RoomView.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/components/structures/RoomView.js b/src/components/structures/RoomView.js
index 855090873f..1ecd7dad2e 100644
--- a/src/components/structures/RoomView.js
+++ b/src/components/structures/RoomView.js
@@ -701,7 +701,6 @@ module.exports = React.createClass({
         }
 
         this._updateRoomMembers();
-        this._checkIfAlone(this.state.room);
     },
 
     onRoomMemberMembership: function(ev, member, oldMembership) {
@@ -717,6 +716,7 @@ module.exports = React.createClass({
         // refresh the conf call notification state
         this._updateConfCallNotification();
         this._updateDMState();
+        this._checkIfAlone(this.state.room);
     }, 500),
 
     _checkIfAlone: function(room) {