/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SRC_TRACE_PROCESSOR_STATS_TABLE_H_
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#define SRC_TRACE_PROCESSOR_STATS_TABLE_H_
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#include <limits>
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#include <memory>
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#include "src/trace_processor/stats.h"
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#include "src/trace_processor/table.h"
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#include "src/trace_processor/trace_storage.h"
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namespace perfetto {
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namespace trace_processor {
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// The stats table contains diagnostic info and errors that are either:
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// - Collected at trace time (e.g., ftrace buffer overruns).
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// - Generated at parsing time (e.g., clock events out-of-order).
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class StatsTable : public Table {
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public:
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enum Column { kName = 0, kIndex, kSeverity, kSource, kValue };
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class Cursor : public Table::Cursor {
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public:
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Cursor(StatsTable*);
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// Implementation of Table::Cursor.
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int Filter(const QueryConstraints&, sqlite3_value**) override;
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int Next() override;
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int Eof() override;
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int Column(sqlite3_context*, int N) override;
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private:
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Cursor(Cursor&) = delete;
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Cursor& operator=(const Cursor&) = delete;
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Cursor(Cursor&&) noexcept = default;
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Cursor& operator=(Cursor&&) = default;
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StatsTable* table_ = nullptr;
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const TraceStorage* storage_ = nullptr;
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size_t key_ = 0;
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TraceStorage::Stats::IndexMap::const_iterator index_{};
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};
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static void RegisterTable(sqlite3* db, const TraceStorage* storage);
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StatsTable(sqlite3*, const TraceStorage*);
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// Table implementation.
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base::Optional<Table::Schema> Init(int, const char* const*) override;
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std::unique_ptr<Table::Cursor> CreateCursor() override;
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int BestIndex(const QueryConstraints&, BestIndexInfo*) override;
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private:
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const TraceStorage* const storage_;
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};
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} // namespace trace_processor
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} // namespace perfetto
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#endif // SRC_TRACE_PROCESSOR_STATS_TABLE_H_
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