зеркало из https://github.com/mozilla/gecko-dev.git
52 строки
1.7 KiB
C++
52 строки
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_ipc_IPCStreamUtils_h
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#define mozilla_ipc_IPCStreamUtils_h
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#include "mozilla/ipc/IPCStream.h"
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#include "nsCOMPtr.h"
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#include "nsIInputStream.h"
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namespace mozilla::ipc {
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// Serialize an IPCStream to be sent over IPC fallibly.
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//
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// If |aAllowLazy| is true the stream may be serialized as a
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// RemoteLazyInputStream when being sent from child to parent.
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//
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// ParamTraits<nsIInputStream> may be used instead if serialization cannot be
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// fallible.
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[[nodiscard]] bool SerializeIPCStream(
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already_AddRefed<nsIInputStream> aInputStream, IPCStream& aValue,
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bool aAllowLazy);
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// If serialization fails, `aValue` will be initialized to `Nothing()`, so this
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// return value is safe to ignore.
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bool SerializeIPCStream(already_AddRefed<nsIInputStream> aInputStream,
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Maybe<IPCStream>& aValue, bool aAllowLazy);
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// Deserialize an IPCStream received from an actor call. These methods
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// work in both the child and parent.
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already_AddRefed<nsIInputStream> DeserializeIPCStream(const IPCStream& aValue);
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already_AddRefed<nsIInputStream> DeserializeIPCStream(
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const Maybe<IPCStream>& aValue);
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} // namespace mozilla::ipc
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namespace IPC {
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template <>
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struct ParamTraits<nsIInputStream*> {
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static void Write(MessageWriter* aWriter, nsIInputStream* aParam);
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static bool Read(MessageReader* aReader, RefPtr<nsIInputStream>* aResult);
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};
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} // namespace IPC
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#endif // mozilla_ipc_IPCStreamUtils_h
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