1 files changed, 44 insertions, 0 deletions
diff --git a/dom/canvas/WebGLContextLossHandler.h b/dom/canvas/WebGLContextLossHandler.h
new file mode 100644
index 000000000..096fdc387
--- /dev/null
+++ b/dom/canvas/WebGLContextLossHandler.h
@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#ifndef WEBGL_CONTEXT_LOSS_HANDLER_H_
+#define WEBGL_CONTEXT_LOSS_HANDLER_H_
+
+#include "mozilla/WeakPtr.h"
+#include "nsCOMPtr.h"
+
+class nsIThread;
+class nsITimer;
+
+namespace mozilla {
+class WebGLContext;
+
+class WebGLContextLossHandler final : public SupportsWeakPtr<WebGLContextLossHandler>
+{
+    WebGLContext* const mWebGL;
+    const nsCOMPtr<nsITimer> mTimer; // If we don't hold a ref to the timer, it will think
+    bool mTimerPending;              // that it's been discarded, and be canceled 'for our
+    bool mShouldRunTimerAgain;       // convenience'.
+#ifdef DEBUG
+    nsIThread* const mThread;
+#endif
+
+    friend class WatchdogTimerEvent;
+
+public:
+    MOZ_DECLARE_WEAKREFERENCE_TYPENAME(WebGLContextLossHandler)
+
+    explicit WebGLContextLossHandler(WebGLContext* webgl);
+    ~WebGLContextLossHandler();
+
+    void RunTimer();
+
+private:
+    void TimerCallback();
+};
+
+} // namespace mozilla
+
+#endif // WEBGL_CONTEXT_LOSS_HANDLER_H_