forked from mirrors/gecko-dev
ad01a10a3b
Note that this patch only transforms the use of the nsDataHashtable type alias to a directly equivalent use of nsTHashMap. It does not change the specification of the hash key type to make use of the key class deduction that nsTHashMap allows for in some cases. That can be done in a separate step, but requires more attention. Differential Revision: https://phabricator.services.mozilla.com/D106008
114 lines
3.1 KiB
C++
114 lines
3.1 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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enum DataSetType {
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eDefaultSetType,
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eSessionSetType,
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};
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int64_t GetOriginQuotaUsage(DataSetType aDataSetType);
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uint32_t Length(DataSetType aDataSetType);
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void Key(DataSetType aDataSetType, uint32_t aIndex, nsAString& aResult);
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void GetItem(DataSetType aDataSetType, const nsAString& aKey,
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nsAString& aResult);
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void GetKeys(DataSetType aDataSetType, nsTArray<nsString>& aKeys);
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nsresult SetItem(DataSetType aDataSetType, const nsAString& aKey,
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const nsAString& aValue, nsString& aOldValue,
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bool aRecordWriteInfo = true);
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nsresult RemoveItem(DataSetType aDataSetType, const nsAString& aKey,
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nsString& aOldValue, bool aRecordWriteInfo = true);
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void Clear(DataSetType aDataSetType, bool aByUserInteraction = true,
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bool aRecordWriteInfo = true);
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void ResetWriteInfos(DataSetType aDataSetType);
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already_AddRefed<SessionStorageCache> Clone() const;
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nsTArray<SSSetItemInfo> SerializeData(DataSetType aDataSetType);
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nsTArray<SSWriteInfo> SerializeWriteInfos(DataSetType aDataSetType);
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void DeserializeData(DataSetType aDataSetType,
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const nsTArray<SSSetItemInfo>& aData);
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void DeserializeWriteInfos(DataSetType aDataSetType,
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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* Set(DataSetType aDataSetType);
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DataSet mDefaultSet;
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DataSet mSessionSet;
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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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