graph_traversal.cc | Explore in Territory

/*
 * Copyright (C) 2024 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/functions/graph_traversal.h"

#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <memory>
#include <optional>
#include <utility>
#include <vector>

#include "perfetto/base/logging.h"
#include "perfetto/base/status.h"
#include "perfetto/ext/base/circular_queue.h"
#include "perfetto/public/compiler.h"
#include "src/trace_processor/containers/string_pool.h"
#include "src/trace_processor/perfetto_sql/engine/perfetto_sql_engine.h"
#include "src/trace_processor/perfetto_sql/intrinsics/functions/tables_py.h"
#include "src/trace_processor/perfetto_sql/intrinsics/types/array.h"
#include "src/trace_processor/perfetto_sql/intrinsics/types/node.h"
#include "src/trace_processor/sqlite/bindings/sqlite_aggregate_function.h"
#include "src/trace_processor/sqlite/bindings/sqlite_result.h"
#include "src/trace_processor/sqlite/bindings/sqlite_value.h"
#include "src/trace_processor/util/status_macros.h"

namespace perfetto::trace_processor {
namespace tables {
TreeTable::~TreeTable() = default;
}  // namespace tables

namespace {

struct State { … };

// An SQL aggregate-function which performs a DFS from a given start node in a
// graph and returns all the nodes which are reachable from the start node.
//
// Note: this function is not intended to be used directly from SQL: instead
// macros exist in the standard library, wrapping it and making it
// user-friendly.
struct Dfs : public SqliteAggregateFunction<Dfs> { … };

// An SQL aggregate-function which performs a BFS from a given start node in a
// graph and returns all the nodes which are reachable from the start node.
//
// Note: this function is not intended to be used directly from SQL: instead
// macros exist in the standard library, wrapping it and making it
// user-friendly.
struct Bfs : public SqliteAggregateFunction<Bfs> { … };

}  // namespace

base::Status RegisterGraphTraversalFunctions(PerfettoSqlEngine& engine,
                                             StringPool& pool) { … }

}  // namespace perfetto::trace_processor
chromium/third_party/perfetto/src/trace_processor/perfetto_sql/intrinsics/functions/graph_traversal.cc
