ipc/glue/RandomAccessStreamUtils.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_ipc_RandomAccessStreamUtils_h
   8 #define mozilla_ipc_RandomAccessStreamUtils_h
   9
  10 template <class T>
  11 class nsCOMPtr;
  12
  13 class nsIInterfaceRequestor;
  14 class nsIRandomAccessStream;
  15
  16 namespace mozilla {
  17
  18 template <class T>
  19 class Maybe;
  20
  21 template <typename T>
  22 class MovingNotNull;
  23
  24 template <typename V, typename E>
  25 class Result;
  26
  27 namespace ipc {
  28
  29 class RandomAccessStreamParams;
  30
  31 // Serialize an nsIRandomAccessStream to be sent over IPC infallibly.
  32 RandomAccessStreamParams SerializeRandomAccessStream(
  33     MovingNotNull<nsCOMPtr<nsIRandomAccessStream>> aStream,
  34     nsIInterfaceRequestor* aCallbacks);
  35
  36 Maybe<RandomAccessStreamParams> SerializeRandomAccessStream(
  37     nsCOMPtr<nsIRandomAccessStream> aStream, nsIInterfaceRequestor* aCallbacks);
  38
  39 // Deserialize an nsIRandomAccessStream received from an actor call.  These
  40 // methods work in both the child and parent.
  41 Result<MovingNotNull<nsCOMPtr<nsIRandomAccessStream>>, bool>
  42 DeserializeRandomAccessStream(RandomAccessStreamParams& aStreamParams);
  43
  44 Result<nsCOMPtr<nsIRandomAccessStream>, bool> DeserializeRandomAccessStream(
  45     Maybe<RandomAccessStreamParams>& aStreamParams);
  46
  47 }  // namespace ipc
  48 }  // namespace mozilla
  49
  50 #endif  // mozilla_ipc_RandomAccessStreamUtils_h