chromium/base/profiler/sample_metadata.cc

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/profiler/sample_metadata.h"

#include <optional>
#include <string_view>

#include "base/metrics/metrics_hashes.h"
#include "base/no_destructor.h"
#include "base/profiler/stack_sampling_profiler.h"
#include "base/threading/thread_local.h"

namespace base {

namespace {

std::optional<PlatformThreadId> GetPlatformThreadIdForScope(
    SampleMetadataScope scope) { … }

}  // namespace

SampleMetadata::SampleMetadata(std::string_view name, SampleMetadataScope scope)
    : … { … }

void SampleMetadata::Set(int64_t value) { … }

void SampleMetadata::Set(int64_t key, int64_t value) { … }

void SampleMetadata::Remove() { … }

void SampleMetadata::Remove(int64_t key) { … }

ScopedSampleMetadata::ScopedSampleMetadata(std::string_view name,
                                           int64_t value,
                                           SampleMetadataScope scope)
    : … { … }

ScopedSampleMetadata::ScopedSampleMetadata(std::string_view name,
                                           int64_t key,
                                           int64_t value,
                                           SampleMetadataScope scope)
    : … { … }

ScopedSampleMetadata::~ScopedSampleMetadata() { … }

// This function is friended by StackSamplingProfiler so must live directly in
// the base namespace.
void ApplyMetadataToPastSamplesImpl(TimeTicks period_start,
                                    TimeTicks period_end,
                                    uint64_t name_hash,
                                    std::optional<int64_t> key,
                                    int64_t value,
                                    std::optional<PlatformThreadId> thread_id) { … }

void ApplyMetadataToPastSamples(TimeTicks period_start,
                                TimeTicks period_end,
                                std::string_view name,
                                int64_t value,
                                SampleMetadataScope scope) { … }

void ApplyMetadataToPastSamples(TimeTicks period_start,
                                TimeTicks period_end,
                                std::string_view name,
                                int64_t key,
                                int64_t value,
                                SampleMetadataScope scope) { … }

void AddProfileMetadataImpl(uint64_t name_hash,
                            int64_t key,
                            int64_t value,
                            std::optional<PlatformThreadId> thread_id) { … }

void AddProfileMetadata(std::string_view name,
                        int64_t key,
                        int64_t value,
                        SampleMetadataScope scope) { … }

MetadataRecorder* GetSampleMetadataRecorder() { … }

}  // namespace base