forked from mirrors/gecko-dev
72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "LSWriteOptimizer.h"
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#include <new>
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#include "nsBaseHashtable.h"
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#include "nsTArray.h"
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namespace mozilla::dom {
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class LSWriteOptimizerBase::WriteInfoComparator {
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public:
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bool Equals(const WriteInfo* a, const WriteInfo* b) const {
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MOZ_ASSERT(a && b);
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return a->SerialNumber() == b->SerialNumber();
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}
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bool LessThan(const WriteInfo* a, const WriteInfo* b) const {
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MOZ_ASSERT(a && b);
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return a->SerialNumber() < b->SerialNumber();
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}
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};
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void LSWriteOptimizerBase::DeleteItem(const nsAString& aKey, int64_t aDelta) {
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AssertIsOnOwningThread();
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mWriteInfos.WithEntryHandle(aKey, [&](auto&& entry) {
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if (entry && entry.Data()->GetType() == WriteInfo::InsertItem) {
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entry.Remove();
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} else {
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entry.InsertOrUpdate(
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MakeUnique<DeleteItemInfo>(NextSerialNumber(), aKey));
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}
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});
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mTotalDelta += aDelta;
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}
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void LSWriteOptimizerBase::Truncate(int64_t aDelta) {
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AssertIsOnOwningThread();
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mWriteInfos.Clear();
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if (!mTruncateInfo) {
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mTruncateInfo = MakeUnique<TruncateInfo>(NextSerialNumber());
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}
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mTotalDelta += aDelta;
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}
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void LSWriteOptimizerBase::GetSortedWriteInfos(
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nsTArray<NotNull<WriteInfo*>>& aWriteInfos) {
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AssertIsOnOwningThread();
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if (mTruncateInfo) {
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aWriteInfos.InsertElementSorted(WrapNotNullUnchecked(mTruncateInfo.get()),
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WriteInfoComparator());
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}
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for (const auto& entry : mWriteInfos) {
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WriteInfo* writeInfo = entry.GetWeak();
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aWriteInfos.InsertElementSorted(WrapNotNull(writeInfo),
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WriteInfoComparator());
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}
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}
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} // namespace mozilla::dom
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