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/*
* 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.
*/
#ifndef SRC_TRACE_PROCESSOR_PRELUDE_TABLE_FUNCTIONS_DESCENDANT_H_
#define SRC_TRACE_PROCESSOR_PRELUDE_TABLE_FUNCTIONS_DESCENDANT_H_
#include <optional>
#include "src/trace_processor/prelude/table_functions/table_function.h"
#include "src/trace_processor/storage/trace_storage.h"
namespace perfetto {
namespace trace_processor {
namespace tables {
#define PERFETTO_TP_DESCENDANT_SLICE_TABLE_DEF(NAME, PARENT, C) \
NAME(DescendantSliceTable, "descendant_slice") \
PARENT(PERFETTO_TP_SLICE_TABLE_DEF, C) \
C(uint32_t, start_id, Column::Flag::kHidden)
PERFETTO_TP_TABLE(PERFETTO_TP_DESCENDANT_SLICE_TABLE_DEF);
#define PERFETTO_TP_DESCENDANT_SLICE_BY_STACK_TABLE_DEF(NAME, PARENT, C) \
NAME(DescendantSliceByStackTable, "descendant_slice_by_stack") \
PARENT(PERFETTO_TP_SLICE_TABLE_DEF, C) \
C(int64_t, start_stack_id, Column::Flag::kHidden)
PERFETTO_TP_TABLE(PERFETTO_TP_DESCENDANT_SLICE_BY_STACK_TABLE_DEF);
} // namespace tables
class TraceProcessorContext;
// Implements the following dynamic tables:
// * descendant_slice
// * descendant_slice_by_stack
//
// See docs/analysis/trace-processor for usage.
class Descendant : public TableFunction {
public:
enum class Type { kSlice = 1, kSliceByStack = 2 };
Descendant(Type type, const TraceStorage*);
Table::Schema CreateSchema() override;
std::string TableName() override;
uint32_t EstimateRowCount() override;
base::Status ValidateConstraints(const QueryConstraints&) override;
base::Status ComputeTable(const std::vector<Constraint>& cs,
const std::vector<Order>& ob,
const BitVector& cols_used,
std::unique_ptr<Table>& table_return) override;
// Returns a vector of slice rows which are descendants of |slice_id|. Returns
// std::nullopt if an invalid |slice_id| is given. This is used by
// ConnectedFlow to traverse flow indirectly connected flow events.
static std::optional<std::vector<tables::SliceTable::RowNumber>>
GetDescendantSlices(const tables::SliceTable& slices, SliceId slice_id);
private:
Type type_;
const TraceStorage* storage_ = nullptr;
};
} // namespace trace_processor
} // namespace perfetto
#endif // SRC_TRACE_PROCESSOR_PRELUDE_TABLE_FUNCTIONS_DESCENDANT_H_
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