content/browser/renderer_host/input/input_router_impl_perftest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/basictypes.h"
   6 #include "base/memory/scoped_ptr.h"
   7 #include "content/browser/renderer_host/input/input_ack_handler.h"
   8 #include "content/browser/renderer_host/input/input_router_client.h"
   9 #include "content/browser/renderer_host/input/input_router_impl.h"
  10 #include "content/common/input/web_input_event_traits.h"
  11 #include "content/common/input_messages.h"
  12 #include "content/common/view_messages.h"
  13 #include "ipc/ipc_sender.h"
  14 #include "testing/gtest/include/gtest/gtest.h"
  15 #include "testing/perf/perf_test.h"
  16 #include "ui/gfx/geometry/vector2d_f.h"
  17
  18 using base::TimeDelta;
  19 using blink::WebGestureEvent;
  20 using blink::WebInputEvent;
  21 using blink::WebTouchEvent;
  22 using blink::WebTouchPoint;
  23
  24 namespace content {
  25
  26 namespace {
  27
  28 class NullInputAckHandler : public InputAckHandler {
  29  public:
  30   NullInputAckHandler() : ack_count_(0) {}
  31   ~NullInputAckHandler() override {}
  32
  33   // InputAckHandler
  34   void OnKeyboardEventAck(const NativeWebKeyboardEvent& event,
  35                           InputEventAckState ack_result) override {
  36     ++ack_count_;
  37   }
  38   void OnWheelEventAck(const MouseWheelEventWithLatencyInfo& event,
  39                        InputEventAckState ack_result) override {
  40     ++ack_count_;
  41   }
  42   void OnTouchEventAck(const TouchEventWithLatencyInfo& event,
  43                        InputEventAckState ack_result) override {
  44     ++ack_count_;
  45   }
  46   void OnGestureEventAck(const GestureEventWithLatencyInfo& event,
  47                          InputEventAckState ack_result) override {
  48     ++ack_count_;
  49   }
  50   void OnUnexpectedEventAck(UnexpectedEventAckType type) override {
  51     ++ack_count_;
  52   }
  53
  54   size_t GetAndResetAckCount() {
  55     size_t ack_count = ack_count_;
  56     ack_count_ = 0;
  57     return ack_count;
  58   }
  59
  60   size_t ack_count() const { return ack_count_; }
  61
  62  private:
  63   size_t ack_count_;
  64 };
  65
  66 class NullInputRouterClient : public InputRouterClient {
  67  public:
  68   NullInputRouterClient() {}
  69   ~NullInputRouterClient() override {}
  70
  71   // InputRouterClient
  72   InputEventAckState FilterInputEvent(
  73       const blink::WebInputEvent& input_event,
  74       const ui::LatencyInfo& latency_info) override {
  75     return INPUT_EVENT_ACK_STATE_NOT_CONSUMED;
  76   }
  77   void IncrementInFlightEventCount() override {}
  78   void DecrementInFlightEventCount() override {}
  79   void OnHasTouchEventHandlers(bool has_handlers) override {}
  80   void DidFlush() override {}
  81   void DidOverscroll(const DidOverscrollParams& params) override {}
  82   void DidStopFlinging() override {}
  83 };
  84
  85 class NullIPCSender : public IPC::Sender {
  86  public:
  87   NullIPCSender() : sent_count_(0) {}
  88   ~NullIPCSender() override {}
  89
  90   bool Send(IPC::Message* message) override {
  91     delete message;
  92     ++sent_count_;
  93     return true;
  94   }
  95
  96   size_t GetAndResetSentEventCount() {
  97     size_t message_count = sent_count_;
  98     sent_count_ = 0;
  99     return message_count;
 100   }
 101
 102   bool HasMessages() const { return sent_count_ > 0; }
 103
 104  private:
 105   size_t sent_count_;
 106 };
 107
 108 // TODO(jdduke): Use synthetic gesture pipeline, crbug.com/344598.
 109 typedef std::vector<WebGestureEvent> Gestures;
 110 Gestures BuildScrollSequence(size_t steps,
 111                              const gfx::Vector2dF& origin,
 112                              const gfx::Vector2dF& distance) {
 113   Gestures gestures;
 114   const gfx::Vector2dF delta = ScaleVector2d(distance, 1.f / steps);
 115
 116   WebGestureEvent gesture;
 117   gesture.type = WebInputEvent::GestureScrollBegin;
 118   gesture.x = origin.x();
 119   gesture.y = origin.y();
 120   gestures.push_back(gesture);
 121
 122   gesture.type = WebInputEvent::GestureScrollUpdate;
 123   gesture.data.scrollUpdate.deltaX = delta.x();
 124   gesture.data.scrollUpdate.deltaY = delta.y();
 125   for (size_t i = 0; i < steps; ++i) {
 126     gesture.x += delta.x();
 127     gesture.y += delta.y();
 128     gestures.push_back(gesture);
 129   }
 130
 131   gesture.type = WebInputEvent::GestureScrollEnd;
 132   gestures.push_back(gesture);
 133   return gestures;
 134 }
 135
 136 typedef std::vector<WebTouchEvent> Touches;
 137 Touches BuildTouchSequence(size_t steps,
 138                            const gfx::Vector2dF& origin,
 139                            const gfx::Vector2dF& distance) {
 140   Touches touches;
 141   const gfx::Vector2dF delta = ScaleVector2d(distance, 1.f / steps);
 142
 143   WebTouchEvent touch;
 144   touch.touchesLength = 1;
 145   touch.type = WebInputEvent::TouchStart;
 146   touch.touches[0].id = 0;
 147   touch.touches[0].state = WebTouchPoint::StatePressed;
 148   touch.touches[0].position.x = origin.x();
 149   touch.touches[0].position.y = origin.y();
 150   touch.touches[0].screenPosition.x = origin.x();
 151   touch.touches[0].screenPosition.y = origin.y();
 152   touches.push_back(touch);
 153
 154   touch.type = WebInputEvent::TouchMove;
 155   touch.touches[0].state = WebTouchPoint::StateMoved;
 156   for (size_t i = 0; i < steps; ++i) {
 157     touch.touches[0].position.x += delta.x();
 158     touch.touches[0].position.y += delta.y();
 159     touch.touches[0].screenPosition.x += delta.x();
 160     touch.touches[0].screenPosition.y += delta.y();
 161     touches.push_back(touch);
 162   }
 163
 164   touch.type = WebInputEvent::TouchEnd;
 165   touch.touches[0].state = WebTouchPoint::StateReleased;
 166   touches.push_back(touch);
 167   return touches;
 168 }
 169
 170 class InputEventTimer {
 171  public:
 172   InputEventTimer(const char* test_name, int64 event_count)
 173       : test_name_(test_name),
 174         event_count_(event_count),
 175         start_(base::TimeTicks::Now()) {}
 176
 177   ~InputEventTimer() {
 178     perf_test::PrintResult(
 179         "avg_time_per_event",
 180         "",
 181         test_name_,
 182         static_cast<size_t>(((base::TimeTicks::Now() - start_) / event_count_)
 183                                 .InMicroseconds()),
 184         "us",
 185         true);
 186   }
 187
 188  private:
 189   const char* test_name_;
 190   int64 event_count_;
 191   base::TimeTicks start_;
 192   DISALLOW_COPY_AND_ASSIGN(InputEventTimer);
 193 };
 194
 195 }  // namespace
 196
 197 class InputRouterImplPerfTest : public testing::Test {
 198  public:
 199   InputRouterImplPerfTest() : last_input_id_(0) {}
 200   ~InputRouterImplPerfTest() override {}
 201
 202  protected:
 203   // testing::Test
 204   void SetUp() override {
 205     sender_.reset(new NullIPCSender());
 206     client_.reset(new NullInputRouterClient());
 207     ack_handler_.reset(new NullInputAckHandler());
 208     input_router_.reset(new InputRouterImpl(sender_.get(),
 209                                             client_.get(),
 210                                             ack_handler_.get(),
 211                                             MSG_ROUTING_NONE,
 212                                             InputRouterImpl::Config()));
 213   }
 214
 215   void TearDown() override {
 216     base::MessageLoop::current()->RunUntilIdle();
 217
 218     input_router_.reset();
 219     ack_handler_.reset();
 220     client_.reset();
 221     sender_.reset();
 222   }
 223
 224   void SendEvent(const WebGestureEvent& gesture,
 225                  const ui::LatencyInfo& latency) {
 226     input_router_->SendGestureEvent(
 227         GestureEventWithLatencyInfo(gesture, latency));
 228   }
 229
 230   void SendEvent(const WebTouchEvent& touch, const ui::LatencyInfo& latency) {
 231     input_router_->SendTouchEvent(TouchEventWithLatencyInfo(touch, latency));
 232   }
 233
 234   void SendEventAckIfNecessary(const blink::WebInputEvent& event,
 235                                InputEventAckState ack_result) {
 236     if (!WebInputEventTraits::WillReceiveAckFromRenderer(event))
 237       return;
 238     InputEventAck ack(event.type, ack_result);
 239     InputHostMsg_HandleInputEvent_ACK response(0, ack);
 240     input_router_->OnMessageReceived(response);
 241   }
 242
 243   void OnHasTouchEventHandlers(bool has_handlers) {
 244     input_router_->OnMessageReceived(
 245         ViewHostMsg_HasTouchEventHandlers(0, has_handlers));
 246   }
 247
 248   size_t GetAndResetSentEventCount() {
 249     return sender_->GetAndResetSentEventCount();
 250   }
 251
 252   size_t GetAndResetAckCount() { return ack_handler_->GetAndResetAckCount(); }
 253
 254   size_t AckCount() const { return ack_handler_->ack_count(); }
 255
 256   int64 NextLatencyID() { return ++last_input_id_; }
 257
 258   ui::LatencyInfo CreateLatencyInfo() {
 259     ui::LatencyInfo latency;
 260     latency.AddLatencyNumber(
 261         ui::INPUT_EVENT_LATENCY_SCROLL_UPDATE_ORIGINAL_COMPONENT, 1, 0);
 262     latency.AddLatencyNumber(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT, 1,
 263                              NextLatencyID());
 264     return latency;
 265   }
 266
 267   // TODO(jdduke): Use synthetic gesture pipeline, crbug.com/344598.
 268   template <typename EventType>
 269   void SimulateEventSequence(const char* test_name,
 270                              const std::vector<EventType>& events,
 271                              bool ack_delay,
 272                              size_t iterations) {
 273     OnHasTouchEventHandlers(true);
 274
 275     const size_t event_count = events.size();
 276     const size_t total_event_count = event_count * iterations;
 277
 278     InputEventTimer timer(test_name, total_event_count);
 279     while (iterations--) {
 280       size_t i = 0, ack_i = 0;
 281       if (ack_delay)
 282         SendEvent(events[i++], CreateLatencyInfo());
 283
 284       for (; i < event_count; ++i, ++ack_i) {
 285         SendEvent(events[i], CreateLatencyInfo());
 286         SendEventAckIfNecessary(events[ack_i], INPUT_EVENT_ACK_STATE_CONSUMED);
 287       }
 288
 289       if (ack_delay)
 290         SendEventAckIfNecessary(events.back(), INPUT_EVENT_ACK_STATE_CONSUMED);
 291
 292       EXPECT_EQ(event_count, GetAndResetSentEventCount());
 293       EXPECT_EQ(event_count, GetAndResetAckCount());
 294     }
 295   }
 296
 297   void SimulateTouchAndScrollEventSequence(const char* test_name,
 298                                            size_t steps,
 299                                            const gfx::Vector2dF& origin,
 300                                            const gfx::Vector2dF& distance,
 301                                            size_t iterations) {
 302     OnHasTouchEventHandlers(true);
 303
 304     Gestures gestures = BuildScrollSequence(steps, origin, distance);
 305     Touches touches = BuildTouchSequence(steps, origin, distance);
 306     ASSERT_EQ(touches.size(), gestures.size());
 307
 308     const size_t event_count = gestures.size();
 309     const size_t total_event_count = event_count * iterations * 2;
 310
 311     InputEventTimer timer(test_name, total_event_count);
 312     while (iterations--) {
 313       for (size_t i = 0; i < event_count; ++i) {
 314         SendEvent(touches[i], CreateLatencyInfo());
 315         // Touches may not be forwarded after the scroll sequence has begun, so
 316         // only ack if necessary.
 317         if (!AckCount()) {
 318           SendEventAckIfNecessary(touches[i],
 319                                   INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
 320         }
 321
 322         SendEvent(gestures[i], CreateLatencyInfo());
 323         SendEventAckIfNecessary(gestures[i], INPUT_EVENT_ACK_STATE_CONSUMED);
 324         EXPECT_EQ(2U, GetAndResetAckCount());
 325       }
 326     }
 327   }
 328
 329  private:
 330   int64 last_input_id_;
 331   scoped_ptr<NullIPCSender> sender_;
 332   scoped_ptr<NullInputRouterClient> client_;
 333   scoped_ptr<NullInputAckHandler> ack_handler_;
 334   scoped_ptr<InputRouterImpl> input_router_;
 335   base::MessageLoopForUI message_loop_;
 336 };
 337
 338 const size_t kDefaultSteps(100);
 339 const size_t kDefaultIterations(100);
 340 const gfx::Vector2dF kDefaultOrigin(100, 100);
 341 const gfx::Vector2dF kDefaultDistance(500, 500);
 342
 343 TEST_F(InputRouterImplPerfTest, TouchSwipe) {
 344   SimulateEventSequence(
 345       "TouchSwipe ",
 346       BuildTouchSequence(kDefaultSteps, kDefaultOrigin, kDefaultDistance),
 347       false,
 348       kDefaultIterations);
 349 }
 350
 351 TEST_F(InputRouterImplPerfTest, TouchSwipeDelayedAck) {
 352   SimulateEventSequence(
 353       "TouchSwipeDelayedAck ",
 354       BuildTouchSequence(kDefaultSteps, kDefaultOrigin, kDefaultDistance),
 355       true,
 356       kDefaultIterations);
 357 }
 358
 359 TEST_F(InputRouterImplPerfTest, GestureScroll) {
 360   SimulateEventSequence(
 361       "GestureScroll ",
 362       BuildScrollSequence(kDefaultSteps, kDefaultOrigin, kDefaultDistance),
 363       false,
 364       kDefaultIterations);
 365 }
 366
 367 TEST_F(InputRouterImplPerfTest, GestureScrollDelayedAck) {
 368   SimulateEventSequence(
 369       "GestureScrollDelayedAck ",
 370       BuildScrollSequence(kDefaultSteps, kDefaultOrigin, kDefaultDistance),
 371       true,
 372       kDefaultIterations);
 373 }
 374
 375 TEST_F(InputRouterImplPerfTest, TouchSwipeToGestureScroll) {
 376   SimulateTouchAndScrollEventSequence("TouchSwipeToGestureScroll ",
 377                                       kDefaultSteps,
 378                                       kDefaultOrigin,
 379                                       kDefaultDistance,
 380                                       kDefaultIterations);
 381 }
 382
 383 }  // namespace content