/*
 * Copyright (C) 2026 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.
 */

#ifndef SRC_TRACE_PROCESSOR_CORE_COMMON_TREE_TYPES_H_
#define SRC_TRACE_PROCESSOR_CORE_COMMON_TREE_TYPES_H_

#include <cstdint>
#include <limits>

namespace perfetto::trace_processor::core {

// Sentinel value representing a null parent in tree structures.
// Root nodes have this value as their parent.
inline constexpr uint32_t kNullParent = std::numeric_limits<uint32_t>::max();

// Aggregation operation for tree propagation (propagate-down).
enum class PropagateAggOp : uint8_t {
  kSum,
  kMin,
  kMax,
  kFirst,
  kLast,
};

}  // namespace perfetto::trace_processor::core

#endif  // SRC_TRACE_PROCESSOR_CORE_COMMON_TREE_TYPES_H_
