1 files changed, 61 insertions, 0 deletions
diff --git a/dom/serviceworkers/ServiceWorkerShutdownState.h b/dom/serviceworkers/ServiceWorkerShutdownState.h
new file mode 100644
index 0000000000..eec55fab8d
--- /dev/null
+++ b/dom/serviceworkers/ServiceWorkerShutdownState.h
@@ -0,0 +1,61 @@
+/* -*- 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 DOM_SERVICEWORKERS_SERVICEWORKERSHUTDOWNSTATE_H_
+#define DOM_SERVICEWORKERS_SERVICEWORKERSHUTDOWNSTATE_H_
+
+#include <cstdint>
+
+#include "ipc/EnumSerializer.h"
+#include "mozilla/dom/ServiceWorkerOpArgs.h"
+
+namespace mozilla::dom {
+
+class ServiceWorkerShutdownState {
+ public:
+  // Represents the "location" of the shutdown message or completion of
+  // shutdown.
+  enum class Progress {
+    ParentProcessMainThread,
+    ParentProcessIpdlBackgroundThread,
+    ContentProcessWorkerLauncherThread,
+    ContentProcessMainThread,
+    ShutdownCompleted,
+    EndGuard_,
+  };
+
+  ServiceWorkerShutdownState();
+
+  ~ServiceWorkerShutdownState();
+
+  const char* GetProgressString() const;
+
+  void SetProgress(Progress aProgress);
+
+ private:
+  Progress mProgress;
+};
+
+// Asynchronously reports that shutdown has progressed to the calling thread
+// if aArgs is for shutdown. If aShutdownCompleted is true, aArgs must be for
+// shutdown.
+void MaybeReportServiceWorkerShutdownProgress(const ServiceWorkerOpArgs& aArgs,
+                                              bool aShutdownCompleted = false);
+
+}  // namespace mozilla::dom
+
+namespace IPC {
+
+using Progress = mozilla::dom::ServiceWorkerShutdownState::Progress;
+
+template <>
+struct ParamTraits<Progress>
+    : public ContiguousEnumSerializer<
+          Progress, Progress::ParentProcessMainThread, Progress::EndGuard_> {};
+
+}  // namespace IPC
+
+#endif  // DOM_SERVICEWORKERS_SERVICEWORKERSHUTDOWNSTATE_H_