summaryrefslogtreecommitdiffstats
path: root/dom/cache/CacheChild.h
diff options
context:
space:
mode:
Diffstat (limited to 'dom/cache/CacheChild.h')
-rw-r--r--dom/cache/CacheChild.h111
1 files changed, 111 insertions, 0 deletions
diff --git a/dom/cache/CacheChild.h b/dom/cache/CacheChild.h
new file mode 100644
index 000000000..8888007b0
--- /dev/null
+++ b/dom/cache/CacheChild.h
@@ -0,0 +1,111 @@
+/* -*- 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_cache_CacheChild_h
+#define mozilla_dom_cache_CacheChild_h
+
+#include "mozilla/dom/cache/ActorChild.h"
+#include "mozilla/dom/cache/PCacheChild.h"
+
+class nsIAsyncInputStream;
+class nsIGlobalObject;
+
+namespace mozilla {
+namespace dom {
+
+class Promise;
+
+namespace cache {
+
+class Cache;
+class CacheOpArgs;
+
+class CacheChild final : public PCacheChild
+ , public ActorChild
+{
+public:
+ class MOZ_RAII AutoLock final
+ {
+ CacheChild* mActor;
+
+ public:
+ explicit AutoLock(CacheChild* aActor)
+ : mActor(aActor)
+ {
+ MOZ_DIAGNOSTIC_ASSERT(mActor);
+ mActor->Lock();
+ }
+
+ ~AutoLock()
+ {
+ mActor->Unlock();
+ }
+ };
+
+ CacheChild();
+ ~CacheChild();
+
+ void SetListener(Cache* aListener);
+
+ // Must be called by the associated Cache listener in its DestroyInternal()
+ // method. Also, Cache must call StartDestroyFromListener() on the actor in
+ // its destructor to trigger ActorDestroy() if it has not been called yet.
+ void ClearListener();
+
+ void
+ ExecuteOp(nsIGlobalObject* aGlobal, Promise* aPromise,
+ nsISupports* aParent, const CacheOpArgs& aArgs);
+
+ // Our parent Listener object has gone out of scope and is being destroyed.
+ void StartDestroyFromListener();
+
+private:
+ // ActorChild methods
+
+ // WorkerHolder is trying to destroy due to worker shutdown.
+ virtual void StartDestroy() override;
+
+ // PCacheChild methods
+ virtual void
+ ActorDestroy(ActorDestroyReason aReason) override;
+
+ virtual PCacheOpChild*
+ AllocPCacheOpChild(const CacheOpArgs& aOpArgs) override;
+
+ virtual bool
+ DeallocPCacheOpChild(PCacheOpChild* aActor) override;
+
+ // utility methods
+ void
+ NoteDeletedActor();
+
+ void
+ MaybeFlushDelayedDestroy();
+
+ // Methods used to temporarily force the actor alive. Only called from
+ // AutoLock.
+ void
+ Lock();
+
+ void
+ Unlock();
+
+ // Use a weak ref so actor does not hold DOM object alive past content use.
+ // The Cache object must call ClearListener() to null this before its
+ // destroyed.
+ Cache* MOZ_NON_OWNING_REF mListener;
+ uint32_t mNumChildActors;
+ bool mDelayedDestroy;
+ bool mLocked;
+
+ NS_DECL_OWNINGTHREAD
+};
+
+} // namespace cache
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_cache_CacheChild_h