Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 59 insertions, 0 deletions

diff --git a/dom/workers/remoteworkers/RemoteWorkerService.h b/dom/workers/remoteworkers/RemoteWorkerService.h
new file mode 100644
index 0000000000..1d5e50ee87
--- /dev/null
+++ b/dom/workers/remoteworkers/RemoteWorkerService.h
@@ -0,0 +1,59 @@
+/* -*- 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_dom_RemoteWorkerService_h
+#define mozilla_dom_RemoteWorkerService_h
+
+#include "nsCOMPtr.h"
+#include "nsIObserver.h"
+
+class nsIThread;
+
+namespace mozilla::dom {
+
+class RemoteWorkerServiceChild;
+
+/**
+ * Every process has a RemoteWorkerService which does the actual spawning of
+ * RemoteWorkerChild instances. The RemoteWorkerService creates a "Worker
+ * Launcher" thread at initialization on which it creates a
+ * RemoteWorkerServiceChild to service spawn requests. The thread is exposed as
+ * RemoteWorkerService::Thread(). A new/distinct thread is used because we
+ * (eventually) don't want to deal with main-thread contention, content
+ * processes have no equivalent of a PBackground thread, and actors are bound to
+ * specific threads.
+ *
+ * (Disclaimer: currently most RemoteWorkerOps need to happen on the main thread
+ * because the main-thread ends up as the owner of the worker and all
+ * manipulation of the worker must happen from the owning thread.)
+ */
+class RemoteWorkerService final : public nsIObserver {
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIOBSERVER
+
+  // To be called when a process is initialized on main-thread.
+  static void Initialize();
+
+  static nsIThread* Thread();
+
+ private:
+  RemoteWorkerService();
+  ~RemoteWorkerService();
+
+  nsresult InitializeOnMainThread();
+
+  void InitializeOnTargetThread();
+
+  void CloseActorOnTargetThread();
+
+  nsCOMPtr<nsIThread> mThread;
+  RefPtr<RemoteWorkerServiceChild> mActor;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_RemoteWorkerService_h