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Diffstat (limited to 'dom/serviceworkers/FetchEventOpParent.h')
-rw-r--r-- | dom/serviceworkers/FetchEventOpParent.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/dom/serviceworkers/FetchEventOpParent.h b/dom/serviceworkers/FetchEventOpParent.h new file mode 100644 index 0000000000..279a28129e --- /dev/null +++ b/dom/serviceworkers/FetchEventOpParent.h @@ -0,0 +1,75 @@ +/* -*- 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/. */ + +#ifndef mozilla_dom_fetcheventopparent_h__ +#define mozilla_dom_fetcheventopparent_h__ + +#include "nsISupports.h" + +#include "mozilla/dom/FetchEventOpProxyParent.h" +#include "mozilla/dom/PFetchEventOpParent.h" + +namespace mozilla::dom { + +class FetchEventOpParent final : public PFetchEventOpParent { + friend class PFetchEventOpParent; + + public: + NS_INLINE_DECL_REFCOUNTING(FetchEventOpParent) + + FetchEventOpParent() = default; + + // Transition from the Pending state to the Started state. Returns the preload + // response and response end args, if it has already arrived. + std::tuple<Maybe<ParentToParentInternalResponse>, Maybe<ResponseEndArgs>> + OnStart( + MovingNotNull<RefPtr<FetchEventOpProxyParent>> aFetchEventOpProxyParent); + + // Transition from the Started state to the Finished state. + void OnFinish(); + + private: + ~FetchEventOpParent() = default; + + // IPDL methods + + mozilla::ipc::IPCResult RecvPreloadResponse( + ParentToParentInternalResponse&& aResponse); + + mozilla::ipc::IPCResult RecvPreloadResponseTiming(ResponseTiming&& aTiming); + + mozilla::ipc::IPCResult RecvPreloadResponseEnd(ResponseEndArgs&& aArgs); + + void ActorDestroy(ActorDestroyReason) override; + + struct Pending { + Maybe<ParentToParentInternalResponse> mPreloadResponse; + Maybe<ResponseTiming> mTiming; + Maybe<ResponseEndArgs> mEndArgs; + }; + + struct Started { + NotNull<RefPtr<FetchEventOpProxyParent>> mFetchEventOpProxyParent; + }; + + struct Finished {}; + + using State = Variant<Pending, Started, Finished>; + + // Tracks the state of the fetch event. + // + // Pending: the fetch event is waiting in RemoteWorkerController::mPendingOps + // and if the preload response arrives, we have to save it. + // Started: the FetchEventOpProxyParent has been created, and if the preload + // response arrives then we should forward it. + // Finished: the response has been propagated to the parent process, if the + // preload response arrives now then we simply drop it. + State mState = AsVariant(Pending()); +}; + +} // namespace mozilla::dom + +#endif // mozilla_dom_fetcheventopparent_h__ |