From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- dom/locks/LockManagerChild.h | 65 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 dom/locks/LockManagerChild.h (limited to 'dom/locks/LockManagerChild.h') diff --git a/dom/locks/LockManagerChild.h b/dom/locks/LockManagerChild.h new file mode 100644 index 0000000000..a31639ce40 --- /dev/null +++ b/dom/locks/LockManagerChild.h @@ -0,0 +1,65 @@ +/* -*- 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_LOCKS_LOCKMANAGERCHILD_H_ +#define DOM_LOCKS_LOCKMANAGERCHILD_H_ + +#include "mozilla/dom/locks/PLockManagerChild.h" +#include "mozilla/dom/Promise.h" +#include "mozilla/dom/WorkerRef.h" +#include "nsIUUIDGenerator.h" + +namespace mozilla::dom::locks { + +struct LockRequest; + +class LockManagerChild final : public PLockManagerChild { + public: + NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(LockManagerChild) + NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(LockManagerChild) + + static void NotifyBFCacheOnMainThread(nsPIDOMWindowInner* aInner, + bool aCreated); + + explicit LockManagerChild(nsIGlobalObject* aOwner); + + nsIGlobalObject* GetParentObject() const { return mOwner; }; + + void RequestLock(const LockRequest& aRequest, const LockOptions& aOptions); + + void NotifyRequestDestroy() const; + + void NotifyToWindow(bool aCreated) const; + + private: + ~LockManagerChild() = default; + + nsCOMPtr mOwner; + + // This WorkerRef is deleted by destructor. + // + // Here we want to make sure the IPC layer deletes the actor before allowing + // WorkerPrivate deletion, since managed LockRequestChild holds a reference to + // global object (currently via mRequest member variable) and thus deleting + // the worker first causes an assertion failure. Having this ensures that all + // LockRequestChild instances must first have been deleted. + // + // (Because each LockRequestChild's ActorLifecycleProxy will hold + // a strong reference to its manager LockManagerChild's ActorLifecycleProxy, + // which means that the LockManagerChild will only be destroyed once all + // LockRequestChild instances have been destroyed. At that point, all + // references to the global should have been dropped, and then the + // LockManagerChild IPCWorkerRef will be dropped and the worker will be able + // to transition to the Killing state.) + // + // ActorDestroy can't release this since it does not guarantee to destruct and + // GC the managees (LockRequestChild) immediately. + RefPtr mWorkerRef; +}; + +} // namespace mozilla::dom::locks + +#endif // DOM_LOCKS_LOCKMANAGERCHILD_H_ -- cgit v1.2.3