import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/cache/CacheWorkerHolder.cpp

@@ -0,0 +1,109 @@
+/* -*- 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 "mozilla/dom/cache/CacheWorkerHolder.h"
+
+#include "mozilla/dom/cache/ActorChild.h"
+#include "WorkerPrivate.h"
+
+namespace mozilla {
+namespace dom {
+namespace cache {
+
+using mozilla::dom::workers::Terminating;
+using mozilla::dom::workers::Status;
+using mozilla::dom::workers::WorkerPrivate;
+
+// static
+already_AddRefed<CacheWorkerHolder>
+CacheWorkerHolder::Create(WorkerPrivate* aWorkerPrivate)
+{
+  MOZ_DIAGNOSTIC_ASSERT(aWorkerPrivate);
+
+  RefPtr<CacheWorkerHolder> workerHolder = new CacheWorkerHolder();
+  if (NS_WARN_IF(!workerHolder->HoldWorker(aWorkerPrivate, Terminating))) {
+    return nullptr;
+  }
+
+  return workerHolder.forget();
+}
+
+void
+CacheWorkerHolder::AddActor(ActorChild* aActor)
+{
+  NS_ASSERT_OWNINGTHREAD(CacheWorkerHolder);
+  MOZ_DIAGNOSTIC_ASSERT(aActor);
+  MOZ_ASSERT(!mActorList.Contains(aActor));
+
+  mActorList.AppendElement(aActor);
+
+  // Allow an actor to be added after we've entered the Notifying case.  We
+  // can't stop the actor creation from racing with out destruction of the
+  // other actors and we need to wait for this extra one to close as well.
+  // Signal it should destroy itself right away.
+  if (mNotified) {
+    aActor->StartDestroy();
+  }
+}
+
+void
+CacheWorkerHolder::RemoveActor(ActorChild* aActor)
+{
+  NS_ASSERT_OWNINGTHREAD(CacheWorkerHolder);
+  MOZ_DIAGNOSTIC_ASSERT(aActor);
+
+#if defined(RELEASE_OR_BETA)
+  mActorList.RemoveElement(aActor);
+#else
+  MOZ_DIAGNOSTIC_ASSERT(mActorList.RemoveElement(aActor));
+#endif
+
+  MOZ_ASSERT(!mActorList.Contains(aActor));
+}
+
+bool
+CacheWorkerHolder::Notified() const
+{
+  return mNotified;
+}
+
+bool
+CacheWorkerHolder::Notify(Status aStatus)
+{
+  NS_ASSERT_OWNINGTHREAD(CacheWorkerHolder);
+
+  // When the service worker thread is stopped we will get Terminating,
+  // but nothing higher than that.  We must shut things down at Terminating.
+  if (aStatus < Terminating || mNotified) {
+    return true;
+  }
+
+  mNotified = true;
+
+  // Start the asynchronous destruction of our actors.  These will call back
+  // into RemoveActor() once the actor is destroyed.
+  for (uint32_t i = 0; i < mActorList.Length(); ++i) {
+    MOZ_DIAGNOSTIC_ASSERT(mActorList[i]);
+    mActorList[i]->StartDestroy();
+  }
+
+  return true;
+}
+
+CacheWorkerHolder::CacheWorkerHolder()
+  : mNotified(false)
+{
+}
+
+CacheWorkerHolder::~CacheWorkerHolder()
+{
+  NS_ASSERT_OWNINGTHREAD(CacheWorkerHolder);
+  MOZ_DIAGNOSTIC_ASSERT(mActorList.IsEmpty());
+}
+
+} // namespace cache
+} // namespace dom
+} // namespace mozilla