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_RemoteLazyInputStreamThread_h
8 #define mozilla_RemoteLazyInputStreamThread_h
9 
10 #include "mozilla/RemoteLazyInputStreamChild.h"
11 #include "nsIEventTarget.h"
12 #include "nsIObserver.h"
13 #include "nsTArray.h"
14 
15 class nsIThread;
16 
17 namespace mozilla {
18 
19 class RemoteLazyInputStreamChild;
20 
21 class RemoteLazyInputStreamThread final : public nsIObserver,
22                                           public nsIEventTarget {
23  public:
24   NS_DECL_THREADSAFE_ISUPPORTS
25   NS_DECL_NSIOBSERVER
26   NS_DECL_NSIEVENTTARGET
27 
28   static bool IsOnFileEventTarget(nsIEventTarget* aEventTarget);
29 
30   static RemoteLazyInputStreamThread* Get();
31 
32   static RemoteLazyInputStreamThread* GetOrCreate();
33 
34   void MigrateActor(RemoteLazyInputStreamChild* aActor);
35 
36   bool Initialize();
37 
38   void InitializeOnMainThread();
39 
40  private:
41   ~RemoteLazyInputStreamThread() = default;
42 
43   void MigrateActorInternal(RemoteLazyInputStreamChild* aActor);
44 
45   nsCOMPtr<nsIThread> mThread;
46 
47   // This is populated if MigrateActor() is called before the initialization of
48   // the thread.
49   nsTArray<RefPtr<RemoteLazyInputStreamChild>> mPendingActors;
50 };
51 
52 bool IsOnDOMFileThread();
53 
54 void AssertIsOnDOMFileThread();
55 
56 }  // namespace mozilla
57 
58 #endif  // mozilla_RemoteLazyInputStreamThread_h
59