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5f8daf01d9
This patch adds a new IPDL protocol PBackgroundLocalStorageCache. It is used by LocalStorageCache object to broadcast changes in local storage cache to other content processes. Each origin has its own PBackgroundLocalStorageCache, so now we can notify content processes that actually have a local storage cache for given origin. This greatly improves performance and reduces memory footprint especialy when local storage changes carry big strings and/or happen very quickly (before this patch all child processes were blindly notified).
115 lines
3.0 KiB
C++
115 lines
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_LocalStorage_h
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#define mozilla_dom_LocalStorage_h
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#include "Storage.h"
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#include "nsWeakReference.h"
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namespace mozilla {
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namespace dom {
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class LocalStorageCache;
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class LocalStorageManager;
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class StorageEvent;
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class LocalStorage final : public Storage
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, public nsSupportsWeakReference
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{
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(LocalStorage, Storage)
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StorageType Type() const override { return eLocalStorage; }
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LocalStorageManager* GetManager() const
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{
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return mManager;
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}
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LocalStorageCache const* GetCache() const
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{
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return mCache;
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}
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const nsString&
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DocumentURI() const
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{
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return mDocumentURI;
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}
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bool PrincipalEquals(nsIPrincipal* aPrincipal);
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LocalStorage(nsPIDOMWindowInner* aWindow,
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LocalStorageManager* aManager,
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LocalStorageCache* aCache,
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const nsAString& aDocumentURI,
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nsIPrincipal* aPrincipal,
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bool aIsPrivate);
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bool IsForkOf(const Storage* aOther) const override;
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// WebIDL
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int64_t GetOriginQuotaUsage() const override;
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uint32_t GetLength(nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv) override;
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void Key(uint32_t aIndex, nsAString& aResult,
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nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv) override;
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void GetItem(const nsAString& aKey, nsAString& aResult,
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nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv) override;
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void GetSupportedNames(nsTArray<nsString>& aKeys) override;
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void SetItem(const nsAString& aKey, const nsAString& aValue,
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nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv) override;
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void RemoveItem(const nsAString& aKey,
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nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv) override;
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void Clear(nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv) override;
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bool IsPrivate() const { return mIsPrivate; }
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void
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ApplyEvent(StorageEvent* aStorageEvent);
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private:
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~LocalStorage();
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friend class LocalStorageManager;
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friend class LocalStorageCache;
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RefPtr<LocalStorageManager> mManager;
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RefPtr<LocalStorageCache> mCache;
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nsString mDocumentURI;
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// Principal this Storage (i.e. localStorage or sessionStorage) has
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// been created for
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nsCOMPtr<nsIPrincipal> mPrincipal;
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// Whether this storage is running in private-browsing window.
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bool mIsPrivate : 1;
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void OnChange(const nsAString& aKey,
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const nsAString& aOldValue,
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const nsAString& aNewValue);
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_LocalStorage_h
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