1 files changed, 26 insertions, 0 deletions
diff --git a/xpcom/threads/SynchronizedEventQueue.cpp b/xpcom/threads/SynchronizedEventQueue.cpp
new file mode 100644
index 0000000000..59161b7f9d
--- /dev/null
+++ b/xpcom/threads/SynchronizedEventQueue.cpp
@@ -0,0 +1,26 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SynchronizedEventQueue.h"
+#include "nsIThreadInternal.h"
+
+using namespace mozilla;
+
+void SynchronizedEventQueue::AddObserver(nsIThreadObserver* aObserver) {
+  MOZ_ASSERT(aObserver);
+  MOZ_ASSERT(!mEventObservers.Contains(aObserver));
+  mEventObservers.AppendElement(aObserver);
+}
+
+void SynchronizedEventQueue::RemoveObserver(nsIThreadObserver* aObserver) {
+  MOZ_ASSERT(aObserver);
+  MOZ_ALWAYS_TRUE(mEventObservers.RemoveElement(aObserver));
+}
+
+const nsTObserverArray<nsCOMPtr<nsIThreadObserver>>&
+SynchronizedEventQueue::EventObservers() {
+  return mEventObservers;
+}