1 files changed, 47 insertions, 0 deletions
diff --git a/dom/media/gtest/GMPTestMonitor.h b/dom/media/gtest/GMPTestMonitor.h
new file mode 100644
index 0000000000..8ce6f8ddd8
--- /dev/null
+++ b/dom/media/gtest/GMPTestMonitor.h
@@ -0,0 +1,47 @@
+/* -*- 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 "nsThreadUtils.h"
+
+#ifndef __GMPTestMonitor_h__
+#define __GMPTestMonitor_h__
+
+class GMPTestMonitor
+{
+public:
+  GMPTestMonitor()
+    : mFinished(false)
+  {
+  }
+
+  void AwaitFinished()
+  {
+    MOZ_ASSERT(NS_IsMainThread());
+    while (!mFinished) {
+      NS_ProcessNextEvent(nullptr, true);
+    }
+    mFinished = false;
+  }
+
+private:
+  void MarkFinished()
+  {
+    MOZ_ASSERT(NS_IsMainThread());
+    mFinished = true;
+  }
+
+public:
+  void SetFinished()
+  {
+    NS_DispatchToMainThread(mozilla::NewNonOwningRunnableMethod(this,
+                                                                &GMPTestMonitor::MarkFinished));
+  }
+
+private:
+  bool mFinished;
+};
+
+#endif // __GMPTestMonitor_h__