From a39a70682795bcfc1538d9cea01b4563a02daef0 Mon Sep 17 00:00:00 2001
From: Karl Tomlinson <karlt+@karlt.net>
Date: Tue, 30 Oct 2018 15:14:33 +0000
Subject: [PATCH] Bug 1503132 update offline main thread state when there is no
 pending iteration r=padenot

Depends on D10163

Differential Revision: https://phabricator.services.mozilla.com/D10164

--HG--
extra : moz-landing-system : lando
---
 dom/media/MediaStreamGraph.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dom/media/MediaStreamGraph.cpp b/dom/media/MediaStreamGraph.cpp
index 7ed032276b6a..8684de3a5b13 100644
--- a/dom/media/MediaStreamGraph.cpp
+++ b/dom/media/MediaStreamGraph.cpp
@@ -1113,7 +1113,11 @@ MediaStreamGraphImpl::ShouldUpdateMainThread()
   }
 
   TimeStamp now = TimeStamp::Now();
-  if ((now - mLastMainThreadUpdate).ToMilliseconds() > CurrentDriver()->IterationDuration()) {
+  // For offline graphs, update now if there is no pending iteration or if it
+  // has been long enough since the last update.
+  if (!mNeedAnotherIteration ||
+      ((now - mLastMainThreadUpdate).ToMilliseconds() >
+       CurrentDriver()->IterationDuration())) {
     mLastMainThreadUpdate = now;
     return true;
   }