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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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/. */
#include "LSWriteOptimizer.h"
#include <new>
#include "nsBaseHashtable.h"
#include "nsTArray.h"
namespace mozilla::dom {
class LSWriteOptimizerBase::WriteInfoComparator {
public:
bool Equals(const WriteInfo* a, const WriteInfo* b) const {
MOZ_ASSERT(a && b);
return a->SerialNumber() == b->SerialNumber();
}
bool LessThan(const WriteInfo* a, const WriteInfo* b) const {
MOZ_ASSERT(a && b);
return a->SerialNumber() < b->SerialNumber();
}
};
void LSWriteOptimizerBase::DeleteItem(const nsAString& aKey, int64_t aDelta) {
AssertIsOnOwningThread();
WriteInfo* existingWriteInfo;
if (mWriteInfos.Get(aKey, &existingWriteInfo) &&
existingWriteInfo->GetType() == WriteInfo::InsertItem) {
mWriteInfos.Remove(aKey);
} else {
mWriteInfos.Put(aKey, MakeUnique<DeleteItemInfo>(NextSerialNumber(), aKey));
}
mTotalDelta += aDelta;
}
void LSWriteOptimizerBase::Truncate(int64_t aDelta) {
AssertIsOnOwningThread();
mWriteInfos.Clear();
if (!mTruncateInfo) {
mTruncateInfo = MakeUnique<TruncateInfo>(NextSerialNumber());
}
mTotalDelta += aDelta;
}
void LSWriteOptimizerBase::GetSortedWriteInfos(
nsTArray<NotNull<WriteInfo*>>& aWriteInfos) {
AssertIsOnOwningThread();
if (mTruncateInfo) {
aWriteInfos.InsertElementSorted(WrapNotNullUnchecked(mTruncateInfo.get()),
WriteInfoComparator());
}
for (auto iter = mWriteInfos.ConstIter(); !iter.Done(); iter.Next()) {
WriteInfo* writeInfo = iter.UserData();
aWriteInfos.InsertElementSorted(WrapNotNull(writeInfo),
WriteInfoComparator());
}
}
} // namespace mozilla::dom
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