/*
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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_TRACE_PROCESSOR_IMPL_H_
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#define SRC_TRACE_PROCESSOR_TRACE_PROCESSOR_IMPL_H_
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#include <sqlite3.h>
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#include <atomic>
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#include <functional>
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#include <memory>
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#include <vector>
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#include "perfetto/base/string_view.h"
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#include "perfetto/trace_processor/basic_types.h"
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#include "perfetto/trace_processor/trace_processor.h"
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#include "src/trace_processor/scoped_db.h"
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#include "src/trace_processor/trace_processor_context.h"
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namespace perfetto {
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namespace trace_processor {
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enum TraceType {
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kUnknownTraceType,
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kProtoTraceType,
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kProtoWithTrackEventsTraceType,
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kJsonTraceType,
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kFuchsiaTraceType,
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};
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TraceType GuessTraceType(const uint8_t* data, size_t size);
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// Coordinates the loading of traces from an arbitrary source and allows
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// execution of SQL queries on the events in these traces.
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class TraceProcessorImpl : public TraceProcessor {
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public:
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explicit TraceProcessorImpl(const Config&);
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~TraceProcessorImpl() override;
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bool Parse(std::unique_ptr<uint8_t[]>, size_t) override;
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void NotifyEndOfFile() override;
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Iterator ExecuteQuery(const std::string& sql,
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int64_t time_queued = 0) override;
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int ComputeMetric(const std::vector<std::string>& metric_names,
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std::vector<uint8_t>* metrics) override;
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void InterruptQuery() override;
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private:
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// Needed for iterators to be able to delete themselves from the vector.
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friend class IteratorImpl;
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ScopedDb db_; // Keep first.
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TraceProcessorContext context_;
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bool unrecoverable_parse_error_ = false;
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std::vector<IteratorImpl*> iterators_;
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// This is atomic because it is set by the CTRL-C signal handler and we need
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// to prevent single-flow compiler optimizations in ExecuteQuery().
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std::atomic<bool> query_interrupted_{false};
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const Config cfg_;
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};
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// The pointer implementation of TraceProcessor::Iterator.
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class TraceProcessor::IteratorImpl {
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public:
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IteratorImpl(TraceProcessorImpl* impl,
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sqlite3* db,
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ScopedStmt,
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uint32_t column_count,
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base::Optional<std::string> error,
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uint32_t sql_stats_row);
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~IteratorImpl();
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IteratorImpl(IteratorImpl&) noexcept = delete;
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IteratorImpl& operator=(IteratorImpl&) = delete;
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IteratorImpl(IteratorImpl&&) noexcept = default;
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IteratorImpl& operator=(IteratorImpl&&) = default;
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// Methods called by TraceProcessor::Iterator.
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bool Next() {
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// Delegate to the cc file to prevent trace_storage.h include in this
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// file.
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if (!called_next_) {
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RecordFirstNextInSqlStats();
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called_next_ = true;
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}
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if (PERFETTO_UNLIKELY(error_.has_value()))
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return false;
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int ret = sqlite3_step(*stmt_);
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if (PERFETTO_UNLIKELY(ret != SQLITE_ROW && ret != SQLITE_DONE)) {
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error_ = base::Optional<std::string>(sqlite3_errmsg(db_));
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return false;
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}
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return ret == SQLITE_ROW;
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}
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SqlValue Get(uint32_t col) {
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auto column = static_cast<int>(col);
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auto col_type = sqlite3_column_type(*stmt_, column);
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SqlValue value;
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switch (col_type) {
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case SQLITE_INTEGER:
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value.type = SqlValue::kLong;
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value.long_value = sqlite3_column_int64(*stmt_, column);
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break;
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case SQLITE_TEXT:
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value.type = SqlValue::kString;
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value.string_value =
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reinterpret_cast<const char*>(sqlite3_column_text(*stmt_, column));
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break;
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case SQLITE_FLOAT:
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value.type = SqlValue::kDouble;
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value.double_value = sqlite3_column_double(*stmt_, column);
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break;
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case SQLITE_NULL:
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value.type = SqlValue::kNull;
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break;
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}
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return value;
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}
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std::string GetColumnName(uint32_t col) {
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return sqlite3_column_name(stmt_.get(), static_cast<int>(col));
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}
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uint32_t ColumnCount() { return column_count_; }
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base::Optional<std::string> GetLastError() { return error_; }
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// Methods called by TraceProcessorImpl.
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void Reset();
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private:
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void RecordFirstNextInSqlStats();
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TraceProcessorImpl* trace_processor_;
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sqlite3* db_ = nullptr;
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ScopedStmt stmt_;
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uint32_t column_count_ = 0;
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base::Optional<std::string> error_;
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uint32_t sql_stats_row_ = 0;
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bool called_next_ = false;
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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_TRACE_PROCESSOR_IMPL_H_
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