зеркало из https://github.com/mozilla/gecko-dev.git
102 строки
2.6 KiB
C++
102 строки
2.6 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_SessionStorageCache_h
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#define mozilla_dom_SessionStorageCache_h
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#include "mozilla/UniquePtr.h"
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#include "mozilla/dom/LSWriteOptimizerImpl.h"
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#include "nsTHashMap.h"
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namespace mozilla {
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namespace dom {
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class SSSetItemInfo;
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class SSWriteInfo;
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class SessionStorageCacheChild;
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/**
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* Coalescing manipulation queue used by `SessionStorageCache`. Used by
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* `SessionStorageCache` to buffer and coalesce manipulations before they
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* are sent to the parent process.
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*/
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class SSWriteOptimizer final : public LSWriteOptimizer<nsAString, nsString> {
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public:
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void Enumerate(nsTArray<SSWriteInfo>& aWriteInfos);
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};
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class SessionStorageCache final {
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public:
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NS_INLINE_DECL_REFCOUNTING(SessionStorageCache)
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SessionStorageCache();
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int64_t GetOriginQuotaUsage();
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uint32_t Length();
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void Key(uint32_t aIndex, nsAString& aResult);
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void GetItem(const nsAString& aKey, nsAString& aResult);
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void GetKeys(nsTArray<nsString>& aKeys);
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nsresult SetItem(const nsAString& aKey, const nsAString& aValue,
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nsString& aOldValue, bool aRecordWriteInfo = true);
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nsresult RemoveItem(const nsAString& aKey, nsString& aOldValue,
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bool aRecordWriteInfo = true);
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void Clear(bool aByUserInteraction = true, bool aRecordWriteInfo = true);
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void ResetWriteInfos();
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already_AddRefed<SessionStorageCache> Clone() const;
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nsTArray<SSSetItemInfo> SerializeData();
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nsTArray<SSWriteInfo> SerializeWriteInfos();
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void DeserializeData(const nsTArray<SSSetItemInfo>& aData);
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void DeserializeWriteInfos(const nsTArray<SSWriteInfo>& aInfos);
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void SetActor(SessionStorageCacheChild* aActor);
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SessionStorageCacheChild* Actor() const { return mActor; }
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void ClearActor();
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void SetLoadedOrCloned() { mLoadedOrCloned = true; }
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bool WasLoadedOrCloned() const { return mLoadedOrCloned; }
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private:
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~SessionStorageCache();
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struct DataSet {
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DataSet() : mOriginQuotaUsage(0) {}
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bool ProcessUsageDelta(int64_t aDelta);
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nsTHashMap<nsStringHashKey, nsString> mKeys;
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SSWriteOptimizer mWriteOptimizer;
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int64_t mOriginQuotaUsage;
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};
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DataSet mDataSet;
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SessionStorageCacheChild* mActor;
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bool mLoadedOrCloned;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_SessionStorageCache_h
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