1 files changed, 69 insertions, 0 deletions
diff --git a/dom/serviceworkers/ServiceWorkerChild.cpp b/dom/serviceworkers/ServiceWorkerChild.cpp
new file mode 100644
index 0000000000..9c1b045e9f
--- /dev/null
+++ b/dom/serviceworkers/ServiceWorkerChild.cpp
@@ -0,0 +1,69 @@
+/* -*- 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/. */
+
+#include "ServiceWorkerChild.h"
+#include "ServiceWorker.h"
+#include "mozilla/dom/WorkerCommon.h"
+#include "mozilla/dom/WorkerRef.h"
+
+namespace mozilla::dom {
+
+void ServiceWorkerChild::ActorDestroy(ActorDestroyReason aReason) {
+  mIPCWorkerRef = nullptr;
+
+  if (mOwner) {
+    mOwner->RevokeActor(this);
+    MOZ_DIAGNOSTIC_ASSERT(!mOwner);
+  }
+}
+
+// static
+RefPtr<ServiceWorkerChild> ServiceWorkerChild::Create() {
+  RefPtr<ServiceWorkerChild> actor = new ServiceWorkerChild();
+
+  if (!NS_IsMainThread()) {
+    WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
+    MOZ_DIAGNOSTIC_ASSERT(workerPrivate);
+
+    RefPtr<IPCWorkerRefHelper<ServiceWorkerChild>> helper =
+        new IPCWorkerRefHelper<ServiceWorkerChild>(actor);
+
+    actor->mIPCWorkerRef = IPCWorkerRef::Create(
+        workerPrivate, "ServiceWorkerChild",
+        [helper] { helper->Actor()->MaybeStartTeardown(); });
+
+    if (NS_WARN_IF(!actor->mIPCWorkerRef)) {
+      return nullptr;
+    }
+  }
+
+  return actor;
+}
+
+ServiceWorkerChild::ServiceWorkerChild()
+    : mOwner(nullptr), mTeardownStarted(false) {}
+
+void ServiceWorkerChild::SetOwner(ServiceWorker* aOwner) {
+  MOZ_DIAGNOSTIC_ASSERT(!mOwner);
+  MOZ_DIAGNOSTIC_ASSERT(aOwner);
+  mOwner = aOwner;
+}
+
+void ServiceWorkerChild::RevokeOwner(ServiceWorker* aOwner) {
+  MOZ_DIAGNOSTIC_ASSERT(mOwner);
+  MOZ_DIAGNOSTIC_ASSERT(aOwner == mOwner);
+  mOwner = nullptr;
+}
+
+void ServiceWorkerChild::MaybeStartTeardown() {
+  if (mTeardownStarted) {
+    return;
+  }
+  mTeardownStarted = true;
+  Unused << SendTeardown();
+}
+
+}  // namespace mozilla::dom