1 files changed, 58 insertions, 0 deletions
diff --git a/dom/file/ipc/RemoteLazyInputStreamThread.h b/dom/file/ipc/RemoteLazyInputStreamThread.h
new file mode 100644
index 0000000000..44e0069c05
--- /dev/null
+++ b/dom/file/ipc/RemoteLazyInputStreamThread.h
@@ -0,0 +1,58 @@
+/* -*- 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_RemoteLazyInputStreamThread_h
+#define mozilla_RemoteLazyInputStreamThread_h
+
+#include "mozilla/RemoteLazyInputStreamChild.h"
+#include "nsIEventTarget.h"
+#include "nsIObserver.h"
+#include "nsTArray.h"
+
+class nsIThread;
+
+namespace mozilla {
+
+class RemoteLazyInputStreamChild;
+
+class RemoteLazyInputStreamThread final : public nsIObserver,
+                                          public nsIEventTarget {
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+  NS_DECL_NSIEVENTTARGET
+
+  static bool IsOnFileEventTarget(nsIEventTarget* aEventTarget);
+
+  static RemoteLazyInputStreamThread* Get();
+
+  static RemoteLazyInputStreamThread* GetOrCreate();
+
+  void MigrateActor(RemoteLazyInputStreamChild* aActor);
+
+  bool Initialize();
+
+  void InitializeOnMainThread();
+
+ private:
+  ~RemoteLazyInputStreamThread() = default;
+
+  void MigrateActorInternal(RemoteLazyInputStreamChild* aActor);
+
+  nsCOMPtr<nsIThread> mThread;
+
+  // This is populated if MigrateActor() is called before the initialization of
+  // the thread.
+  nsTArray<RefPtr<RemoteLazyInputStreamChild>> mPendingActors;
+};
+
+bool IsOnDOMFileThread();
+
+void AssertIsOnDOMFileThread();
+
+}  // namespace mozilla
+
+#endif  // mozilla_RemoteLazyInputStreamThread_h