chromium/base/metrics/histogram_delta_serialization.cc

// Copyright 2013 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/metrics/histogram_delta_serialization.h"

#include "base/containers/span.h"
#include "base/logging.h"
#include "base/metrics/histogram_base.h"
#include "base/metrics/histogram_snapshot_manager.h"
#include "base/metrics/statistics_recorder.h"
#include "base/numerics/safe_conversions.h"
#include "base/pickle.h"
#include "base/values.h"

namespace base {

namespace {

// Create or find existing histogram and add the samples from pickle.
// Silently returns when seeing any data problem in the pickle.
void DeserializeHistogramAndAddSamples(PickleIterator* iter) { … }

}  // namespace

HistogramDeltaSerialization::HistogramDeltaSerialization(
    const std::string& caller_name)
    : … { … }

HistogramDeltaSerialization::~HistogramDeltaSerialization() = default;

void HistogramDeltaSerialization::PrepareAndSerializeDeltas(
    std::vector<std::string>* serialized_deltas,
    bool include_persistent) { … }

// static
void HistogramDeltaSerialization::DeserializeAndAddSamples(
    const std::vector<std::string>& serialized_deltas) { … }

void HistogramDeltaSerialization::RecordDelta(
    const HistogramBase& histogram,
    const HistogramSamples& snapshot) { … }

}  // namespace base