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-rw-r--r--netwerk/ipc/NeckoTargetHolder.h40
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diff --git a/netwerk/ipc/NeckoTargetHolder.h b/netwerk/ipc/NeckoTargetHolder.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=8 et 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/. */
+
+#ifndef mozilla_net_NeckoTargetHolder_h
+#define mozilla_net_NeckoTargetHolder_h
+
+#include "nsIEventTarget.h"
+#include "nsThreadUtils.h"
+
+namespace mozilla {
+namespace net {
+
+// A helper class that implements GetNeckoTarget(). Basically, all e10s child
+// channels should inherit this class in order to get a labeled event target.
+class NeckoTargetHolder {
+ public:
+ explicit NeckoTargetHolder(nsISerialEventTarget* aNeckoTarget)
+ : mNeckoTarget(aNeckoTarget) {}
+
+ protected:
+ virtual ~NeckoTargetHolder() = default;
+ // Get event target for processing network events.
+ virtual already_AddRefed<nsISerialEventTarget> GetNeckoTarget();
+ // When |mNeckoTarget| is not null, use it to dispatch the runnable.
+ // Otherwise, dispatch the runnable to the main thread.
+ nsresult Dispatch(already_AddRefed<nsIRunnable>&& aRunnable,
+ uint32_t aDispatchFlags = NS_DISPATCH_NORMAL);
+
+ // EventTarget for labeling networking events.
+ nsCOMPtr<nsISerialEventTarget> mNeckoTarget;
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif