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/*
* Copyright (C) 2020 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_CONNECTED_FLOW_H_
#define SRC_TRACE_PROCESSOR_PRELUDE_TABLE_FUNCTIONS_CONNECTED_FLOW_H_
#include "src/trace_processor/prelude/table_functions/table_function.h"
#include "src/trace_processor/prelude/table_functions/tables_py.h"
#include "src/trace_processor/storage/trace_storage.h"
#include <queue>
#include <set>
namespace perfetto {
namespace trace_processor {
class TraceProcessorContext;
// Implementation of tables:
// - DIRECTLY_CONNECTED_FLOW
// - PRECEDING_FLOW
// - FOLLOWING_FLOW
class ConnectedFlow : public TableFunction {
public:
enum class Mode {
// Directly connected slices through the same flow ID given by the trace
// writer.
kDirectlyConnectedFlow,
// Flow events which can be reached from the given slice by going over
// incoming flow events or to parent slices.
kPrecedingFlow,
// Flow events which can be reached from the given slice by going over
// outgoing flow events or to child slices.
kFollowingFlow,
};
ConnectedFlow(Mode mode, const TraceStorage*);
~ConnectedFlow() override;
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;
private:
Mode mode_;
const TraceStorage* storage_ = nullptr;
};
} // namespace trace_processor
} // namespace perfetto
#endif // SRC_TRACE_PROCESSOR_PRELUDE_TABLE_FUNCTIONS_CONNECTED_FLOW_H_
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