chromium/third_party/perfetto/src/trace_processor/perfetto_sql/intrinsics/table_functions/descendant.cc

/*
 * Copyright (C) 2021 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "src/trace_processor/perfetto_sql/intrinsics/table_functions/descendant.h"

#include <algorithm>
#include <cinttypes>
#include <cstdint>
#include <memory>
#include <optional>
#include <string>
#include <utility>
#include <vector>

#include "perfetto/base/logging.h"
#include "perfetto/base/status.h"
#include "perfetto/ext/base/status_or.h"
#include "perfetto/trace_processor/basic_types.h"
#include "src/trace_processor/db/column/types.h"
#include "src/trace_processor/db/column_storage.h"
#include "src/trace_processor/db/table.h"
#include "src/trace_processor/db/typed_column.h"
#include "src/trace_processor/perfetto_sql/intrinsics/table_functions/tables_py.h"
#include "src/trace_processor/storage/trace_storage.h"
#include "src/trace_processor/tables/slice_tables_py.h"
#include "src/trace_processor/types/trace_processor_context.h"
#include "src/trace_processor/util/status_macros.h"

namespace perfetto::trace_processor {
namespace tables {

DescendantSliceTable::~DescendantSliceTable() = default;
DescendantSliceByStackTable::~DescendantSliceByStackTable() = default;

}  // namespace tables

namespace {

template <typename ChildTable, typename ParentTable, typename ConstraintType>
std::unique_ptr<Table> ExtendWithStartId(
    ConstraintType constraint_id,
    const ParentTable& table,
    std::vector<typename ParentTable::RowNumber> parent_rows) { … }

base::Status GetDescendants(
    const tables::SliceTable& slices,
    SliceId starting_id,
    std::vector<tables::SliceTable::RowNumber>& row_numbers_accumulator) { … }

}  // namespace

Descendant::Descendant(Type type, const TraceStorage* storage)
    : … { … }

base::StatusOr<std::unique_ptr<Table>> Descendant::ComputeTable(
    const std::vector<SqlValue>& arguments) { … }

Table::Schema Descendant::CreateSchema() { … }

std::string Descendant::TableName() { … }

uint32_t Descendant::EstimateRowCount() { … }

// static
std::optional<std::vector<tables::SliceTable::RowNumber>>
Descendant::GetDescendantSlices(const tables::SliceTable& slices,
                                SliceId slice_id) { … }

}  // namespace perfetto::trace_processor