From b21356787406911bdfaa7c42fd01fe93826296d3 Mon Sep 17 00:00:00 2001
From: Karl Tomlinson <karlt+@karlt.net>
Date: Fri, 12 Jan 2024 09:13:44 +0000
Subject: [PATCH] Bug 1869043 assert that graph set access is main thread only
 r=padenot

Depends on D198225

Differential Revision: https://phabricator.services.mozilla.com/D198226
---
 dom/media/MediaTrackGraph.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dom/media/MediaTrackGraph.cpp b/dom/media/MediaTrackGraph.cpp
index 203c5f2cf3d0..3eef864e30f4 100644
--- a/dom/media/MediaTrackGraph.cpp
+++ b/dom/media/MediaTrackGraph.cpp
@@ -153,6 +153,7 @@ struct GraphHasher {  // for HashSet
 using GraphHashSet =
     HashSet<MediaTrackGraphImpl*, GraphHasher, InfallibleAllocPolicy>;
 GraphHashSet* Graphs() {
+  MOZ_ASSERT(NS_IsMainThread());
   static GraphHashSet sGraphs(4);  // 4 is minimum HashSet capacity
   return &sGraphs;
 }
@@ -3595,6 +3596,7 @@ CrossGraphReceiver* MediaTrackGraph::CreateCrossGraphReceiver(
 
 void MediaTrackGraph::AddTrack(MediaTrack* aTrack) {
   MediaTrackGraphImpl* graph = static_cast<MediaTrackGraphImpl*>(this);
+  MOZ_ASSERT(NS_IsMainThread());
 #ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
   if (graph->mRealtime) {
     GraphHashSet::Ptr p = Graphs()->lookup(*graph);
-- 
2.11.4.GIT