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content / public / browser / prefetch_metrics.h [blame]
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_PUBLIC_BROWSER_PREFETCH_METRICS_H_
#define CONTENT_PUBLIC_BROWSER_PREFETCH_METRICS_H_
#include <optional>
#include "base/time/time.h"
#include "content/common/content_export.h"
namespace content {
class NavigationHandle;
class RenderFrameHost;
// Holds metrics related to the prefetches requested by a page load.
struct CONTENT_EXPORT PrefetchReferringPageMetrics {
static std::optional<PrefetchReferringPageMetrics> GetForCurrentDocument(
RenderFrameHost* rfh);
PrefetchReferringPageMetrics() = default;
~PrefetchReferringPageMetrics() = default;
PrefetchReferringPageMetrics(const PrefetchReferringPageMetrics&) = default;
PrefetchReferringPageMetrics& operator=(const PrefetchReferringPageMetrics&) =
default;
// The number of prefetches that were attempted by this page.
int prefetch_attempted_count = 0;
// The number of prefetches that were determined to be eligible.
int prefetch_eligible_count = 0;
// The number of prefetches that completed successfully.
int prefetch_successful_count = 0;
};
// Holds metrics related to page loads that may benefit from prefetches
// triggered by speculation rules.
struct CONTENT_EXPORT PrefetchServingPageMetrics {
static std::optional<PrefetchServingPageMetrics> GetForNavigationHandle(
NavigationHandle& navigation_handle);
PrefetchServingPageMetrics() = default;
~PrefetchServingPageMetrics() = default;
PrefetchServingPageMetrics(const PrefetchServingPageMetrics&) = default;
PrefetchServingPageMetrics& operator=(const PrefetchServingPageMetrics&) =
default;
// The |PrefetchStatus| of the prefetch used when serving this page.
std::optional<int> prefetch_status;
// Whether or not the prefetch required the use of a private prefetch proxy.
bool required_private_prefetch_proxy = false;
// Whether or not this page load is in the same WebContents as the page the
// requested the page load.
bool same_tab_as_prefetching_tab = false;
// The time between the prefetch request was sent and the time the response
// headers were received.
std::optional<base::TimeDelta> prefetch_header_latency;
// The amount of time it took to get the result of the probe. Only set if
// the probe result was checked.
std::optional<base::TimeDelta> probe_latency;
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_PREFETCH_METRICS_H_