/* -*- 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_ipc_IPCStreamUtils_h #define mozilla_ipc_IPCStreamUtils_h #include "mozilla/ipc/IPCStream.h" #include "nsCOMPtr.h" #include "nsIInputStream.h" namespace mozilla::ipc { // Serialize an IPCStream to be sent over IPC fallibly. // // If |aAllowLazy| is true the stream may be serialized as a // RemoteLazyInputStream when being sent from child to parent. // // ParamTraits<nsIInputStream> may be used instead if serialization cannot be // fallible. [[nodiscard]] bool SerializeIPCStream( already_AddRefed<nsIInputStream> aInputStream, IPCStream& aValue, bool aAllowLazy); // If serialization fails, `aValue` will be initialized to `Nothing()`, so this // return value is safe to ignore. bool SerializeIPCStream(already_AddRefed<nsIInputStream> aInputStream, Maybe<IPCStream>& aValue, bool aAllowLazy); // Deserialize an IPCStream received from an actor call. These methods // work in both the child and parent. already_AddRefed<nsIInputStream> DeserializeIPCStream(const IPCStream& aValue); already_AddRefed<nsIInputStream> DeserializeIPCStream( const Maybe<IPCStream>& aValue); } // namespace mozilla::ipc namespace IPC { template <> struct ParamTraits<nsIInputStream*> { static void Write(MessageWriter* aWriter, nsIInputStream* aParam); static bool Read(MessageReader* aReader, RefPtr<nsIInputStream>* aResult); }; } // namespace IPC #endif // mozilla_ipc_IPCStreamUtils_h