зеркало из https://github.com/mozilla/gecko-dev.git
102 строки
3.3 KiB
C++
102 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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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#include "mozilla/BaseProfileJSONWriter.h"
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namespace mozilla::baseprofiler {
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UniqueJSONStrings::UniqueJSONStrings(FailureLatch& aFailureLatch)
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: mStringTableWriter(aFailureLatch) {
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mStringTableWriter.StartBareList();
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if (const char* failure = mStringTableWriter.GetFailure(); failure) {
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ClearAndSetFailure(failure);
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return;
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}
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}
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UniqueJSONStrings::UniqueJSONStrings(FailureLatch& aFailureLatch,
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const UniqueJSONStrings& aOther,
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ProgressLogger aProgressLogger)
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: mStringTableWriter(aFailureLatch) {
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using namespace mozilla::literals::ProportionValue_literals; // For `10_pc`.
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if (mStringTableWriter.Failed()) {
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return;
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}
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if (const char* failure = aOther.GetFailure(); failure) {
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ClearAndSetFailure(failure);
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return;
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}
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mStringTableWriter.StartBareList();
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uint32_t count = aOther.mStringHashToIndexMap.count();
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if (count != 0) {
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if (!mStringHashToIndexMap.reserve(count)) {
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ClearAndSetFailure("Cannot reserve UniqueJSONStrings map storage");
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return;
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}
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auto iter = aOther.mStringHashToIndexMap.iter();
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for (auto&& [unusedIndex, progressLogger] :
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aProgressLogger.CreateLoopSubLoggersFromTo(
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10_pc, 90_pc, count, "Copying unique strings...")) {
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(void)unusedIndex;
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if (iter.done()) {
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break;
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}
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mStringHashToIndexMap.putNewInfallible(iter.get().key(),
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iter.get().value());
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iter.next();
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}
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aProgressLogger.SetLocalProgress(90_pc, "Copied unique strings");
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mStringTableWriter.CopyAndSplice(
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aOther.mStringTableWriter.ChunkedWriteFunc());
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if (const char* failure = aOther.GetFailure(); failure) {
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ClearAndSetFailure(failure);
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}
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aProgressLogger.SetLocalProgress(100_pc, "Spliced unique strings");
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}
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}
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UniqueJSONStrings::~UniqueJSONStrings() = default;
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void UniqueJSONStrings::SpliceStringTableElements(
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SpliceableJSONWriter& aWriter) {
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aWriter.TakeAndSplice(mStringTableWriter.TakeChunkedWriteFunc());
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}
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void UniqueJSONStrings::ClearAndSetFailure(std::string aFailure) {
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mStringTableWriter.SetFailure(std::move(aFailure));
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mStringHashToIndexMap.clear();
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}
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Maybe<uint32_t> UniqueJSONStrings::GetOrAddIndex(const Span<const char>& aStr) {
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if (Failed()) {
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return Nothing{};
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}
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uint32_t count = mStringHashToIndexMap.count();
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HashNumber hash = HashString(aStr.data(), aStr.size());
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auto entry = mStringHashToIndexMap.lookupForAdd(hash);
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if (entry) {
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MOZ_ASSERT(entry->value() < count);
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return Some(entry->value());
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}
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if (!mStringHashToIndexMap.add(entry, hash, count)) {
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ClearAndSetFailure("OOM in UniqueJSONStrings::GetOrAddIndex adding a map");
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return Nothing{};
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}
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mStringTableWriter.StringElement(aStr);
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if (const char* failure = mStringTableWriter.GetFailure(); failure) {
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ClearAndSetFailure(failure);
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return Nothing{};
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}
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return Some(count);
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}
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} // namespace mozilla::baseprofiler
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