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Unified Diff: ui/latency/latency_tracker.cc

Issue 2814483002: Splitting up RenderWidgetHostLatencyTracker and some renames. (Closed)
Patch Set: [Moving OnGpuSwapBuffersCompleted() back up. Created 3 years, 8 months ago
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Index: ui/latency/latency_tracker.cc
diff --git a/content/browser/renderer_host/input/render_widget_host_latency_tracker.cc b/ui/latency/latency_tracker.cc
similarity index 28%
copy from content/browser/renderer_host/input/render_widget_host_latency_tracker.cc
copy to ui/latency/latency_tracker.cc
index 10a9f126db0e3b043f7d10a3f1c2ce9980739532..06701f05d48a8cd2947722f2bb5001a93213d4d4 100644
--- a/content/browser/renderer_host/input/render_widget_host_latency_tracker.cc
+++ b/ui/latency/latency_tracker.cc
@@ -1,133 +1,15 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
-#include "content/browser/renderer_host/input/render_widget_host_latency_tracker.h"
+#include "ui/latency/latency_tracker.h"
-#include <stddef.h>
-
-#include "base/logging.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
-#include "build/build_config.h"
-#include "components/rappor/public/rappor_utils.h"
-#include "content/browser/renderer_host/render_widget_host_delegate.h"
-#include "content/public/browser/content_browser_client.h"
-#include "content/public/common/content_client.h"
-#include "ui/events/blink/web_input_event_traits.h"
-
-using blink::WebGestureEvent;
-using blink::WebInputEvent;
-using blink::WebMouseEvent;
-using blink::WebMouseWheelEvent;
-using blink::WebTouchEvent;
-using ui::LatencyInfo;
-
-namespace content {
-namespace {
-
-void UpdateLatencyCoordinatesImpl(const blink::WebTouchEvent& touch,
- LatencyInfo* latency,
- float device_scale_factor) {
- for (uint32_t i = 0; i < touch.touches_length; ++i) {
- gfx::PointF coordinate(touch.touches[i].position.x * device_scale_factor,
- touch.touches[i].position.y * device_scale_factor);
- if (!latency->AddInputCoordinate(coordinate))
- break;
- }
-}
-
-void UpdateLatencyCoordinatesImpl(const WebGestureEvent& gesture,
- LatencyInfo* latency,
- float device_scale_factor) {
- latency->AddInputCoordinate(gfx::PointF(gesture.x * device_scale_factor,
- gesture.y * device_scale_factor));
-}
-
-void UpdateLatencyCoordinatesImpl(const WebMouseEvent& mouse,
- LatencyInfo* latency,
- float device_scale_factor) {
- latency->AddInputCoordinate(
- gfx::PointF(mouse.PositionInWidget().x * device_scale_factor,
- mouse.PositionInWidget().y * device_scale_factor));
-}
-
-void UpdateLatencyCoordinatesImpl(const WebMouseWheelEvent& wheel,
- LatencyInfo* latency,
- float device_scale_factor) {
- latency->AddInputCoordinate(
- gfx::PointF(wheel.PositionInWidget().x * device_scale_factor,
- wheel.PositionInWidget().y * device_scale_factor));
-}
+#include "ui/latency/latency_histogram_macros.h"
-void UpdateLatencyCoordinates(const WebInputEvent& event,
- float device_scale_factor,
- LatencyInfo* latency) {
- if (WebInputEvent::IsMouseEventType(event.GetType())) {
- UpdateLatencyCoordinatesImpl(static_cast<const WebMouseEvent&>(event),
- latency, device_scale_factor);
- } else if (WebInputEvent::IsGestureEventType(event.GetType())) {
- UpdateLatencyCoordinatesImpl(static_cast<const WebGestureEvent&>(event),
- latency, device_scale_factor);
- } else if (WebInputEvent::IsTouchEventType(event.GetType())) {
- UpdateLatencyCoordinatesImpl(static_cast<const WebTouchEvent&>(event),
- latency, device_scale_factor);
- } else if (event.GetType() == WebInputEvent::kMouseWheel) {
- UpdateLatencyCoordinatesImpl(static_cast<const WebMouseWheelEvent&>(event),
- latency, device_scale_factor);
- }
-}
-
-// Check valid timing for start and end latency components.
-#define CONFIRM_VALID_TIMING(start, end) \
- DCHECK(!start.first_event_time.is_null()); \
- DCHECK(!end.last_event_time.is_null()); \
- DCHECK_GE(end.last_event_time, start.first_event_time);
-
-// Event latency that is mostly under 1 second. We should only use 100 buckets
-// when needed.
-#define UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(name, start, \
- end) \
- CONFIRM_VALID_TIMING(start, end) \
- base::UmaHistogramCustomCounts( \
- name, (end.last_event_time - start.first_event_time).InMicroseconds(), \
- 1, 1000000, 100);
-
-#define UMA_HISTOGRAM_INPUT_LATENCY_MILLISECONDS(name, start, end) \
- CONFIRM_VALID_TIMING(start, end) \
- base::UmaHistogramCustomCounts( \
- name, (end.last_event_time - start.first_event_time).InMilliseconds(), \
- 1, 1000, 50);
-
-// Touch/wheel to scroll latency using Rappor.
-#define RAPPOR_TOUCH_WHEEL_TO_SCROLL_LATENCY(delegate, name, start, end) \
- CONFIRM_VALID_TIMING(start, end) \
- rappor::RapporService* rappor_service = \
- GetContentClient()->browser()->GetRapporService(); \
- if (rappor_service && delegate) { \
- std::unique_ptr<rappor::Sample> sample = \
- rappor_service->CreateSample(rappor::UMA_RAPPOR_TYPE); \
- delegate->AddDomainInfoToRapporSample(sample.get()); \
- sample->SetUInt64Field( \
- "Latency", \
- (end.last_event_time - start.first_event_time).InMicroseconds(), \
- rappor::NO_NOISE); \
- rappor_service->RecordSample(name, std::move(sample)); \
- }
-
-// Long touch/wheel scroll latency component that is mostly under 200ms.
-#define UMA_HISTOGRAM_SCROLL_LATENCY_LONG_2(name, start, end) \
- CONFIRM_VALID_TIMING(start, end) \
- base::Histogram::FactoryGet(name, 1000, 200000, 50, \
- base::HistogramBase::kUmaTargetedHistogramFlag) \
- ->Add((end.last_event_time - start.first_event_time).InMicroseconds());
-
-// Short touch/wheel scroll latency component that is mostly under 50ms.
-#define UMA_HISTOGRAM_SCROLL_LATENCY_SHORT_2(name, start, end) \
- CONFIRM_VALID_TIMING(start, end) \
- base::Histogram::FactoryGet(name, 1, 50000, 50, \
- base::HistogramBase::kUmaTargetedHistogramFlag) \
- ->Add((end.last_event_time - start.first_event_time).InMicroseconds());
+namespace ui {
+namespace {
std::string LatencySourceEventTypeToInputModalityString(
ui::SourceEventType type) {
@@ -141,23 +23,9 @@ std::string LatencySourceEventTypeToInputModalityString(
}
}
-std::string WebInputEventTypeToInputModalityString(WebInputEvent::Type type) {
- if (type == blink::WebInputEvent::kMouseWheel) {
- return "Wheel";
- } else if (WebInputEvent::IsKeyboardEventType(type)) {
- return "Key";
- } else if (WebInputEvent::IsMouseEventType(type)) {
- return "Mouse";
- } else if (WebInputEvent::IsTouchEventType(type)) {
- return "Touch";
- }
- return "";
-}
-
void ComputeScrollLatencyHistograms(
const LatencyInfo::LatencyComponent& gpu_swap_begin_component,
const LatencyInfo::LatencyComponent& gpu_swap_end_component,
- int64_t latency_component_id,
const LatencyInfo& latency) {
DCHECK(!latency.coalesced());
if (latency.coalesced())
@@ -168,18 +36,18 @@ void ComputeScrollLatencyHistograms(
LatencyInfo::LatencyComponent original_component;
if (latency.FindLatency(
ui::INPUT_EVENT_LATENCY_FIRST_SCROLL_UPDATE_ORIGINAL_COMPONENT,
- latency_component_id, &original_component)) {
+ &original_component)) {
// This UMA metric tracks the time between the final frame swap for the
// first scroll event in a sequence and the original timestamp of that
// scroll event's underlying touch event.
for (size_t i = 0; i < original_component.event_count; i++) {
UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(
- "Event.Latency.TouchToFirstScrollUpdateSwapBegin",
- original_component, gpu_swap_begin_component);
+ "Event.Latency.TouchToFirstScrollUpdateSwapBegin", original_component,
+ gpu_swap_begin_component);
}
} else if (!latency.FindLatency(
ui::INPUT_EVENT_LATENCY_SCROLL_UPDATE_ORIGINAL_COMPONENT,
- latency_component_id, &original_component)) {
+ &original_component)) {
return;
}
@@ -192,11 +60,63 @@ void ComputeScrollLatencyHistograms(
}
}
-void ComputeTouchAndWheelScrollLatencyHistograms(
- RenderWidgetHostDelegate* render_widget_host_delegate,
+} // namespace
+
+void LatencyTracker::OnGpuSwapBuffersCompleted(const LatencyInfo& latency) {
+ LatencyInfo::LatencyComponent gpu_swap_end_component;
+ if (!latency.FindLatency(
+ ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0,
+ &gpu_swap_end_component)) {
+ return;
+ }
+
+ LatencyInfo::LatencyComponent gpu_swap_begin_component;
+ if (!latency.FindLatency(ui::INPUT_EVENT_GPU_SWAP_BUFFER_COMPONENT, 0,
+ &gpu_swap_begin_component)) {
+ return;
+ }
+
+ LatencyInfo::LatencyComponent tab_switch_component;
+ if (latency.FindLatency(ui::TAB_SHOW_COMPONENT, &tab_switch_component)) {
+ base::TimeDelta delta =
+ gpu_swap_end_component.event_time - tab_switch_component.event_time;
+ for (size_t i = 0; i < tab_switch_component.event_count; i++) {
+ UMA_HISTOGRAM_TIMES("MPArch.RWH_TabSwitchPaintDuration", delta);
+ }
+ }
+
+ if (!latency.FindLatency(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT,
+ nullptr)) {
+ return;
+ }
+
+ ui::SourceEventType source_event_type = latency.source_event_type();
+ if (source_event_type == ui::SourceEventType::WHEEL ||
+ source_event_type == ui::SourceEventType::TOUCH) {
+ ComputeTouchAndWheelScrollLatencyHistograms(
+ gpu_swap_begin_component, gpu_swap_end_component, latency);
+ }
+
+ // Compute the old scroll update latency metrics. They are exclusively
+ // calculated for touch scrolls, and will be deprecated on M56.
+ // (https://crbug.com/649754)
+ LatencyInfo::LatencyComponent mouse_wheel_scroll_update_component;
+ if (!latency.FindLatency(
+ ui::INPUT_EVENT_LATENCY_GENERATE_SCROLL_UPDATE_FROM_MOUSE_WHEEL, 0,
+ &mouse_wheel_scroll_update_component)) {
+ ComputeScrollLatencyHistograms(gpu_swap_begin_component,
+ gpu_swap_end_component, latency);
+ }
+}
+
+void LatencyTracker::ReportRapporScrollLatency(
+ const std::string& name,
+ const LatencyInfo::LatencyComponent& start_component,
+ const LatencyInfo::LatencyComponent& end_component) {}
+
+void LatencyTracker::ComputeTouchAndWheelScrollLatencyHistograms(
const ui::LatencyInfo::LatencyComponent& gpu_swap_begin_component,
const ui::LatencyInfo::LatencyComponent& gpu_swap_end_component,
- int64_t latency_component_id,
const ui::LatencyInfo& latency) {
DCHECK(!latency.coalesced());
if (latency.coalesced())
@@ -210,7 +130,7 @@ void ComputeTouchAndWheelScrollLatencyHistograms(
if (latency.FindLatency(
ui::INPUT_EVENT_LATENCY_FIRST_SCROLL_UPDATE_ORIGINAL_COMPONENT,
- latency_component_id, &original_component)) {
+ &original_component)) {
scroll_name = "ScrollBegin";
// This UMA metric tracks the time between the final frame swap for the
// first scroll event in a sequence and the original timestamp of that
@@ -220,11 +140,9 @@ void ComputeTouchAndWheelScrollLatencyHistograms(
".TimeToScrollUpdateSwapBegin2",
original_component, gpu_swap_begin_component);
- RAPPOR_TOUCH_WHEEL_TO_SCROLL_LATENCY(
- render_widget_host_delegate,
- "Event.Latency.ScrollBegin." + input_modality +
- ".TimeToScrollUpdateSwapBegin2",
- original_component, gpu_swap_begin_component);
+ ReportRapporScrollLatency("Event.Latency.ScrollBegin." + input_modality +
+ ".TimeToScrollUpdateSwapBegin2",
+ original_component, gpu_swap_begin_component);
// TODO(lanwei): Will remove them when M56 is stable, see
// https://crbug.com/669618.
@@ -234,7 +152,7 @@ void ComputeTouchAndWheelScrollLatencyHistograms(
original_component, gpu_swap_begin_component);
} else if (latency.FindLatency(
ui::INPUT_EVENT_LATENCY_SCROLL_UPDATE_ORIGINAL_COMPONENT,
- latency_component_id, &original_component)) {
+ &original_component)) {
// This UMA metric tracks the time from when the original touch event is
// created to when the scroll gesture results in final frame swap.
// First scroll events are excluded from this metric.
@@ -243,8 +161,7 @@ void ComputeTouchAndWheelScrollLatencyHistograms(
"Event.Latency.ScrollUpdate.Touch.TimeToScrollUpdateSwapBegin2",
original_component, gpu_swap_begin_component);
- RAPPOR_TOUCH_WHEEL_TO_SCROLL_LATENCY(
- render_widget_host_delegate,
+ ReportRapporScrollLatency(
"Event.Latency.ScrollUpdate.Touch.TimeToScrollUpdateSwapBegin2",
original_component, gpu_swap_begin_component);
}
@@ -282,9 +199,8 @@ void ComputeTouchAndWheelScrollLatencyHistograms(
rendering_scheduled_component, renderer_swap_component);
LatencyInfo::LatencyComponent browser_received_swap_component;
- if (!latency.FindLatency(
- ui::INPUT_EVENT_BROWSER_RECEIVED_RENDERER_SWAP_COMPONENT, 0,
- &browser_received_swap_component))
+ if (!latency.FindLatency(ui::DISPLAY_COMPOSITOR_RECEIVED_FRAME_COMPONENT, 0,
+ &browser_received_swap_component))
return;
UMA_HISTOGRAM_SCROLL_LATENCY_SHORT_2(
@@ -301,308 +217,5 @@ void ComputeTouchAndWheelScrollLatencyHistograms(
"Event.Latency." + scroll_name + "." + input_modality + ".GpuSwap2",
gpu_swap_begin_component, gpu_swap_end_component);
}
-// LatencyComponents generated in the renderer must have component IDs
-// provided to them by the browser process. This function adds the correct
-// component ID where necessary.
-void AddLatencyInfoComponentIds(LatencyInfo* latency,
- int64_t latency_component_id) {
- std::vector<std::pair<ui::LatencyComponentType, int64_t>> new_components_key;
- std::vector<LatencyInfo::LatencyComponent> new_components_value;
- for (const auto& lc : latency->latency_components()) {
- ui::LatencyComponentType component_type = lc.first.first;
- if (component_type == ui::BROWSER_SNAPSHOT_FRAME_NUMBER_COMPONENT) {
- // Generate a new component entry with the correct component ID
- new_components_key.push_back(std::make_pair(component_type,
- latency_component_id));
- new_components_value.push_back(lc.second);
- }
- }
-
- // Remove the entries with invalid component IDs.
- latency->RemoveLatency(ui::BROWSER_SNAPSHOT_FRAME_NUMBER_COMPONENT);
-
- // Add newly generated components into the latency info
- for (size_t i = 0; i < new_components_key.size(); i++) {
- latency->AddLatencyNumberWithTimestamp(
- new_components_key[i].first,
- new_components_key[i].second,
- new_components_value[i].sequence_number,
- new_components_value[i].event_time,
- new_components_value[i].event_count);
- }
-}
-
-} // namespace
-
-RenderWidgetHostLatencyTracker::RenderWidgetHostLatencyTracker()
- : last_event_id_(0),
- latency_component_id_(0),
- device_scale_factor_(1),
- has_seen_first_gesture_scroll_update_(false),
- active_multi_finger_gesture_(false),
- touch_start_default_prevented_(false),
- render_widget_host_delegate_(nullptr) {}
-
-RenderWidgetHostLatencyTracker::~RenderWidgetHostLatencyTracker() {}
-
-void RenderWidgetHostLatencyTracker::Initialize(int routing_id,
- int process_id) {
- DCHECK_EQ(0, last_event_id_);
- DCHECK_EQ(0, latency_component_id_);
- last_event_id_ = static_cast<int64_t>(process_id) << 32;
- latency_component_id_ = routing_id | last_event_id_;
-}
-
-void RenderWidgetHostLatencyTracker::ComputeInputLatencyHistograms(
- WebInputEvent::Type type,
- int64_t latency_component_id,
- const LatencyInfo& latency,
- InputEventAckState ack_result) {
- // If this event was coalesced into another event, ignore it, as the event it
- // was coalesced into will reflect the full latency.
- if (latency.coalesced())
- return;
-
- if (type != blink::WebInputEvent::kMouseWheel &&
- !WebInputEvent::IsTouchEventType(type)) {
- return;
- }
-
- LatencyInfo::LatencyComponent rwh_component;
- if (!latency.FindLatency(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT,
- latency_component_id, &rwh_component)) {
- return;
- }
- DCHECK_EQ(rwh_component.event_count, 1u);
-
- bool multi_finger_touch_gesture =
- WebInputEvent::IsTouchEventType(type) && active_multi_finger_gesture_;
-
- LatencyInfo::LatencyComponent ui_component;
- if (latency.FindLatency(ui::INPUT_EVENT_LATENCY_UI_COMPONENT, 0,
- &ui_component)) {
- DCHECK_EQ(ui_component.event_count, 1u);
- base::TimeDelta ui_delta =
- rwh_component.last_event_time - ui_component.first_event_time;
-
- if (type == blink::WebInputEvent::kMouseWheel) {
- UMA_HISTOGRAM_CUSTOM_COUNTS("Event.Latency.Browser.WheelUI",
- ui_delta.InMicroseconds(), 1, 20000, 100);
- } else {
- DCHECK(WebInputEvent::IsTouchEventType(type));
- UMA_HISTOGRAM_CUSTOM_COUNTS("Event.Latency.Browser.TouchUI",
- ui_delta.InMicroseconds(), 1, 20000, 100);
- }
- }
-
- // Both tap and scroll gestures depend on the disposition of the touch start
- // and the current touch. For touch start, touch_start_default_prevented_ ==
- // (ack_result == INPUT_EVENT_ACK_STATE_CONSUMED).
- bool action_prevented = touch_start_default_prevented_ ||
- ack_result == INPUT_EVENT_ACK_STATE_CONSUMED;
-
- std::string event_name = WebInputEvent::GetName(type);
-
- std::string default_action_status =
- action_prevented ? "DefaultPrevented" : "DefaultAllowed";
-
- LatencyInfo::LatencyComponent main_component;
- if (latency.FindLatency(ui::INPUT_EVENT_LATENCY_RENDERER_MAIN_COMPONENT, 0,
- &main_component)) {
- DCHECK_EQ(main_component.event_count, 1u);
- if (!multi_finger_touch_gesture) {
- UMA_HISTOGRAM_INPUT_LATENCY_MILLISECONDS(
- "Event.Latency.QueueingTime." + event_name + default_action_status,
- rwh_component, main_component);
- }
- }
-
- LatencyInfo::LatencyComponent acked_component;
- if (latency.FindLatency(ui::INPUT_EVENT_LATENCY_ACK_RWH_COMPONENT, 0,
- &acked_component)) {
- DCHECK_EQ(acked_component.event_count, 1u);
- if (!multi_finger_touch_gesture &&
- main_component.event_time != base::TimeTicks()) {
- UMA_HISTOGRAM_INPUT_LATENCY_MILLISECONDS(
- "Event.Latency.BlockingTime." + event_name + default_action_status,
- main_component, acked_component);
- }
-
- std::string input_modality = WebInputEventTypeToInputModalityString(type);
- if (input_modality != "") {
- UMA_HISTOGRAM_INPUT_LATENCY_HIGH_RESOLUTION_MICROSECONDS(
- "Event.Latency.Browser." + input_modality + "Acked", rwh_component,
- acked_component);
- }
- }
-}
-
-void RenderWidgetHostLatencyTracker::OnInputEvent(
- const blink::WebInputEvent& event,
- LatencyInfo* latency) {
- DCHECK(latency);
-
- if (event.GetType() == WebInputEvent::kTouchStart) {
- const WebTouchEvent& touch_event =
- *static_cast<const WebTouchEvent*>(&event);
- DCHECK(touch_event.touches_length >= 1);
- active_multi_finger_gesture_ = touch_event.touches_length != 1;
- }
-
- if (latency->FindLatency(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT,
- latency_component_id_, NULL)) {
- return;
- }
-
- if (event.TimeStampSeconds() &&
- !latency->FindLatency(ui::INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT, 0,
- NULL)) {
- base::TimeTicks timestamp_now = base::TimeTicks::Now();
- base::TimeTicks timestamp_original =
- base::TimeTicks() +
- base::TimeDelta::FromSecondsD(event.TimeStampSeconds());
-
- // Timestamp from platform input can wrap, e.g. 32 bits timestamp
- // for Xserver and Window MSG time will wrap about 49.6 days. Do a
- // sanity check here and if wrap does happen, use TimeTicks::Now()
- // as the timestamp instead.
- if ((timestamp_now - timestamp_original).InDays() > 0)
- timestamp_original = timestamp_now;
-
- latency->AddLatencyNumberWithTimestamp(
- ui::INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT,
- 0,
- 0,
- timestamp_original,
- 1);
- }
-
- latency->AddLatencyNumberWithTraceName(
- ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT, latency_component_id_,
- ++last_event_id_, WebInputEvent::GetName(event.GetType()));
-
- UpdateLatencyCoordinates(event, device_scale_factor_, latency);
-
- if (event.GetType() == blink::WebInputEvent::kGestureScrollBegin) {
- has_seen_first_gesture_scroll_update_ = false;
- } else if (event.GetType() == blink::WebInputEvent::kGestureScrollUpdate) {
- // Make a copy of the INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT with a
- // different name INPUT_EVENT_LATENCY_SCROLL_UPDATE_ORIGINAL_COMPONENT.
- // So we can track the latency specifically for scroll update events.
- LatencyInfo::LatencyComponent original_component;
- if (latency->FindLatency(ui::INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT, 0,
- &original_component)) {
- latency->AddLatencyNumberWithTimestamp(
- has_seen_first_gesture_scroll_update_
- ? ui::INPUT_EVENT_LATENCY_SCROLL_UPDATE_ORIGINAL_COMPONENT
- : ui::INPUT_EVENT_LATENCY_FIRST_SCROLL_UPDATE_ORIGINAL_COMPONENT,
- latency_component_id_, original_component.sequence_number,
- original_component.event_time, original_component.event_count);
- }
-
- has_seen_first_gesture_scroll_update_ = true;
- }
-}
-
-void RenderWidgetHostLatencyTracker::OnInputEventAck(
- const blink::WebInputEvent& event,
- LatencyInfo* latency, InputEventAckState ack_result) {
- DCHECK(latency);
-
- // Latency ends if an event is acked but does not cause render scheduling.
- bool rendering_scheduled = latency->FindLatency(
- ui::INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_MAIN_COMPONENT, 0, nullptr);
- rendering_scheduled |= latency->FindLatency(
- ui::INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_IMPL_COMPONENT, 0, nullptr);
-
- if (WebInputEvent::IsTouchEventType(event.GetType())) {
- const WebTouchEvent& touch_event =
- *static_cast<const WebTouchEvent*>(&event);
- if (event.GetType() == WebInputEvent::kTouchStart) {
- touch_start_default_prevented_ =
- ack_result == INPUT_EVENT_ACK_STATE_CONSUMED;
- } else if (event.GetType() == WebInputEvent::kTouchEnd ||
- event.GetType() == WebInputEvent::kTouchCancel) {
- active_multi_finger_gesture_ = touch_event.touches_length > 2;
- }
- }
-
- latency->AddLatencyNumber(ui::INPUT_EVENT_LATENCY_ACK_RWH_COMPONENT, 0, 0);
- // If this event couldn't have caused a gesture event, and it didn't trigger
- // rendering, we're done processing it.
- if (!rendering_scheduled) {
- latency->AddLatencyNumber(
- ui::INPUT_EVENT_LATENCY_TERMINATED_NO_SWAP_COMPONENT, 0, 0);
- }
-
- ComputeInputLatencyHistograms(event.GetType(), latency_component_id_,
- *latency, ack_result);
-}
-
-void RenderWidgetHostLatencyTracker::OnSwapCompositorFrame(
- std::vector<LatencyInfo>* latencies) {
- DCHECK(latencies);
- for (LatencyInfo& latency : *latencies) {
- AddLatencyInfoComponentIds(&latency, latency_component_id_);
- latency.AddLatencyNumber(
- ui::INPUT_EVENT_BROWSER_RECEIVED_RENDERER_SWAP_COMPONENT, 0, 0);
- }
-}
-
-void RenderWidgetHostLatencyTracker::OnGpuSwapBuffersCompleted(
- const LatencyInfo& latency) {
- LatencyInfo::LatencyComponent gpu_swap_end_component;
- if (!latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0,
- &gpu_swap_end_component)) {
- return;
- }
-
- LatencyInfo::LatencyComponent gpu_swap_begin_component;
- if (!latency.FindLatency(ui::INPUT_EVENT_GPU_SWAP_BUFFER_COMPONENT, 0,
- &gpu_swap_begin_component)) {
- return;
- }
-
- LatencyInfo::LatencyComponent tab_switch_component;
- if (latency.FindLatency(ui::TAB_SHOW_COMPONENT, latency_component_id_,
- &tab_switch_component)) {
- base::TimeDelta delta =
- gpu_swap_end_component.event_time - tab_switch_component.event_time;
- for (size_t i = 0; i < tab_switch_component.event_count; i++) {
- UMA_HISTOGRAM_TIMES("MPArch.RWH_TabSwitchPaintDuration", delta);
- }
- }
-
- if (!latency.FindLatency(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT,
- latency_component_id_, nullptr)) {
- return;
- }
-
- ui::SourceEventType source_event_type = latency.source_event_type();
- if (source_event_type == ui::SourceEventType::WHEEL ||
- source_event_type == ui::SourceEventType::TOUCH) {
- ComputeTouchAndWheelScrollLatencyHistograms(
- render_widget_host_delegate_, gpu_swap_begin_component,
- gpu_swap_end_component, latency_component_id_, latency);
- }
-
- // Compute the old scroll update latency metrics. They are exclusively
- // calculated for touch scrolls, and will be deprecated on M56.
- // (https://crbug.com/649754)
- LatencyInfo::LatencyComponent mouse_wheel_scroll_update_component;
- if (!latency.FindLatency(
- ui::INPUT_EVENT_LATENCY_GENERATE_SCROLL_UPDATE_FROM_MOUSE_WHEEL, 0,
- &mouse_wheel_scroll_update_component)) {
- ComputeScrollLatencyHistograms(gpu_swap_begin_component,
- gpu_swap_end_component,
- latency_component_id_, latency);
- }
-}
-
-void RenderWidgetHostLatencyTracker::SetDelegate(
- RenderWidgetHostDelegate* delegate) {
- render_widget_host_delegate_ = delegate;
-}
-} // namespace content
+} // namespace ui
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