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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_PREDICTORS_LOADING_STATS_COLLECTOR_H_
#define CHROME_BROWSER_PREDICTORS_LOADING_STATS_COLLECTOR_H_
#include <map>
#include <memory>
#include <optional>
#include <utility>
#include "base/memory/raw_ptr.h"
#include "base/strings/string_util.h"
#include "base/time/time.h"
namespace predictors {
struct OptimizationGuidePrediction;
class ResourcePrefetchPredictor;
struct PageRequestSummary;
// Accumulates data from different speculative actions and collates this data
// with a summary of actual page load into statistical reports.
class LoadingStatsCollector {
public:
explicit LoadingStatsCollector(ResourcePrefetchPredictor* predictor);
LoadingStatsCollector(const LoadingStatsCollector&) = delete;
LoadingStatsCollector& operator=(const LoadingStatsCollector&) = delete;
~LoadingStatsCollector();
// Records a summary of a page load. The summary is collated with speculative
// actions taken for a given page load if any. The summary is compared with a
// prediction by ResourcePrefetchPredictor and the Optimization Guide, if
// |optimization_guide_prediction| is present.
// All results are reported to UKM.
void RecordPageRequestSummary(
const PageRequestSummary& summary,
const std::optional<OptimizationGuidePrediction>&
optimization_guide_prediction);
private:
raw_ptr<ResourcePrefetchPredictor, DanglingUntriaged> predictor_;
};
} // namespace predictors
#endif // CHROME_BROWSER_PREDICTORS_LOADING_STATS_COLLECTOR_H_
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