perf_data_tokenizer.cc | Explore in Territory

/*
 * Copyright (C) 2023 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.
 */

#include "src/trace_processor/importers/perf/perf_data_tokenizer.h"

#include <algorithm>
#include <cinttypes>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <optional>
#include <string>
#include <tuple>
#include <utility>
#include <vector>

#include "perfetto/base/flat_set.h"
#include "perfetto/base/logging.h"
#include "perfetto/base/status.h"
#include "perfetto/ext/base/status_or.h"
#include "perfetto/public/compiler.h"
#include "perfetto/trace_processor/ref_counted.h"
#include "perfetto/trace_processor/trace_blob_view.h"
#include "protos/perfetto/trace/clock_snapshot.pbzero.h"
#include "protos/third_party/simpleperf/record_file.pbzero.h"
#include "src/trace_processor/importers/common/clock_tracker.h"
#include "src/trace_processor/importers/common/slice_tracker.h"
#include "src/trace_processor/importers/perf/attrs_section_reader.h"
#include "src/trace_processor/importers/perf/dso_tracker.h"
#include "src/trace_processor/importers/perf/features.h"
#include "src/trace_processor/importers/perf/perf_event.h"
#include "src/trace_processor/importers/perf/perf_event_attr.h"
#include "src/trace_processor/importers/perf/perf_file.h"
#include "src/trace_processor/importers/perf/perf_session.h"
#include "src/trace_processor/importers/perf/reader.h"
#include "src/trace_processor/importers/perf/record.h"
#include "src/trace_processor/importers/proto/perf_sample_tracker.h"
#include "src/trace_processor/sorter/trace_sorter.h"
#include "src/trace_processor/storage/stats.h"
#include "src/trace_processor/util/build_id.h"
#include "src/trace_processor/util/status_macros.h"

namespace perfetto::trace_processor::perf_importer {
namespace {

void AddIds(uint8_t id_offset,
            uint64_t flags,
            base::FlatSet<uint8_t>& feature_ids) { … }

base::FlatSet<uint8_t> ExtractFeatureIds(const uint64_t& flags,
                                         const uint64_t (&flags1)[3]) { … }

bool ReadTime(const Record& record, std::optional<uint64_t>& time) { … }

}  // namespace

PerfDataTokenizer::PerfDataTokenizer(TraceProcessorContext* ctx)
    : … { … }

PerfDataTokenizer::~PerfDataTokenizer() = default;

// A normal perf.data consts of:
// [ header ]
// [ attr section ]
// [ data section ]
// [ optional feature sections ]
//
// Where each "attr" describes one event type recorded in the file.
//
// Most file format documentation is outdated or misleading, instead see
// perf_session__do_write_header() in linux/tools/perf/util/header.c.
base::Status PerfDataTokenizer::Parse(TraceBlobView blob) { … }

base::StatusOr<PerfDataTokenizer::ParsingResult>
PerfDataTokenizer::ParseHeader() { … }

base::StatusOr<PerfDataTokenizer::ParsingResult>
PerfDataTokenizer::ParseAttrs() { … }

base::StatusOr<PerfDataTokenizer::ParsingResult>
PerfDataTokenizer::SeekRecords() { … }

base::StatusOr<PerfDataTokenizer::ParsingResult>
PerfDataTokenizer::ParseRecords() { … }

base::StatusOr<PerfDataTokenizer::ParsingResult> PerfDataTokenizer::ParseRecord(
    Record& record) { … }

base::StatusOr<int64_t> PerfDataTokenizer::ToTraceTimestamp(
    std::optional<uint64_t> time) { … }

bool PerfDataTokenizer::PushRecord(Record record) { … }

base::StatusOr<PerfDataTokenizer::ParsingResult>
PerfDataTokenizer::ParseFeatureSections() { … }

base::StatusOr<PerfDataTokenizer::ParsingResult>
PerfDataTokenizer::ParseFeatures() { … }

base::Status PerfDataTokenizer::ParseFeature(uint8_t feature_id,
                                             TraceBlobView data) { … }

base::Status PerfDataTokenizer::NotifyEndOfFile() { … }

}  // namespace perfetto::trace_processor::perf_importer
chromium/third_party/perfetto/src/trace_processor/importers/perf/perf_data_tokenizer.cc
