cc: Make scheduling be driven by vsync for android webview.

cc/scheduler/scheduler_unittest.cc

 // Copyright 2011 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 "cc/scheduler/scheduler.h"
 
 #include <string>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 123 matching lines @@
   void ScheduledActionCommit() override { PushAction("ScheduledActionCommit"); }
   void ScheduledActionActivateSyncTree() override {
     PushAction("ScheduledActionActivateSyncTree");
   }
   void ScheduledActionBeginOutputSurfaceCreation() override {
     PushAction("ScheduledActionBeginOutputSurfaceCreation");
   }
   void ScheduledActionPrepareTiles() override {
     PushAction("ScheduledActionPrepareTiles");
   }
+  void ScheduledActionInvalidateOutputSurface() override {
+    actions_.push_back("ScheduledActionInvalidateOutputSurface");
+    states_.push_back(scheduler_->AsValue());
+  }
   void DidAnticipatedDrawTimeChange(base::TimeTicks) override {
     if (log_anticipated_draw_time_change_)
       PushAction("DidAnticipatedDrawTimeChange");
   }
   base::TimeDelta DrawDurationEstimate() override { return base::TimeDelta(); }
   base::TimeDelta BeginMainFrameToCommitDurationEstimate() override {
     return base::TimeDelta();
   }
   base::TimeDelta CommitToActivateDurationEstimate() override {
     return base::TimeDelta();
@@ skipping 145 matching lines @@
     EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
     client_->Reset();
 
     {
       SCOPED_TRACE("Do first frame to commit after initialize.");
       AdvanceFrame();
 
       scheduler_->NotifyBeginMainFrameStarted();
       scheduler_->NotifyReadyToCommitThenActivateIfNeeded();
 
-      // Run the posted deadline task.
-      EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
-      task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
+      EXPECT_FALSE(scheduler_->CommitPending());
+
+      if (scheduler_settings_.using_synchronous_renderer_compositor) {
+        scheduler_->SetNeedsRedraw();
+        scheduler_->OnDrawForOutputSurface();
+      } else {
+        // Run the posted deadline task.
+        EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
+        task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
+      }
+
       EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
-
-      EXPECT_FALSE(scheduler_->CommitPending());
     }
 
     client_->Reset();
 
     {
       SCOPED_TRACE(
           "Run second frame so Scheduler calls SetNeedsBeginFrame(false).");
       AdvanceFrame();
 
-      // Run the posted deadline task.
-      EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
-      task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
+      if (!scheduler_settings_.using_synchronous_renderer_compositor) {
+        // Run the posted deadline task.
+        EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
+        task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
+      }
+
       EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
     }
 
     EXPECT_FALSE(client_->needs_begin_frames());
     client_->Reset();
   }
 
   // As this function contains EXPECT macros, to allow debugging it should be
   // called inside EXPECT_SCOPED like so;
   //   EXPECT_SCOPED(client.AdvanceFrame());
   void AdvanceFrame() {
     TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("cc.debug.scheduler.frames"),
                  "FakeSchedulerClient::AdvanceFrame");
     // Consume any previous deadline first, if no deadline is currently
     // pending, ImplFrameDeadlinePending will return false straight away and we
     // will run no tasks.
     task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
     EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
 
     // Send the next BeginFrame message if using an external source, otherwise
     // it will be already in the task queue.
     if (scheduler_->settings().use_external_begin_frame_source &&
         scheduler_->FrameProductionThrottled()) {
       SendNextBeginFrame();
+    }
+
+    if (!scheduler_->settings().using_synchronous_renderer_compositor) {
+      // Then run tasks until new deadline is scheduled.
+      EXPECT_TRUE(task_runner_->RunTasksWhile(
+          client_->ImplFrameDeadlinePending(false)));
       EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
     }
-
-    // Then run tasks until new deadline is scheduled.
-    EXPECT_TRUE(
-        task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(false)));
-    EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
   }
 
   void SendNextBeginFrame() {
     DCHECK(scheduler_->settings().use_external_begin_frame_source);
     // Creep the time forward so that any BeginFrameArgs is not equal to the
     // last one otherwise we violate the BeginFrameSource contract.
     now_src_->AdvanceNow(BeginFrameArgs::DefaultInterval());
     fake_external_begin_frame_source_->TestOnBeginFrame(
         CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE, now_src()));
   }
@@ skipping 1980 matching lines @@
   EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
   EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
   client_->Reset();
 
   task_runner().RunPendingTasks();  // Run posted deadline.
   EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 0, 2);
   EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 1, 2);
   client_->Reset();
 }
 
+TEST_F(SchedulerTest, UsingSynchronousCompositor) {
+  scheduler_settings_.using_synchronous_renderer_compositor = true;
+  scheduler_settings_.use_external_begin_frame_source = true;
+  scheduler_settings_.impl_side_painting = true;
+  SetUpScheduler(true);
+
+  // Compositor thread initiated input/animation.
+  // --------------------------------------------
+  scheduler_->SetNeedsAnimate();
+  EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
+  client_->Reset();
+
+  // Next vsync.
+  AdvanceFrame();
+  EXPECT_ACTION("WillBeginImplFrame", client_, 0, 3);
+  EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 3);
+  EXPECT_ACTION("ScheduledActionInvalidateOutputSurface", client_, 2, 3);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  // Continue with animation.
+  scheduler_->SetNeedsAnimate();
+  EXPECT_NO_ACTION(client_);
+
+  // Android onDraw.
+  scheduler_->SetNeedsRedraw();
+  scheduler_->OnDrawForOutputSurface();
+  EXPECT_SINGLE_ACTION("ScheduledActionDrawAndSwapIfPossible", client_);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  // Next vsync.
+  AdvanceFrame();
+  EXPECT_ACTION("WillBeginImplFrame", client_, 0, 3);
+  EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 3);
+  EXPECT_ACTION("ScheduledActionInvalidateOutputSurface", client_, 2, 3);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  // Android onDraw.
+  scheduler_->SetNeedsRedraw();
+  scheduler_->OnDrawForOutputSurface();
+  EXPECT_SINGLE_ACTION("ScheduledActionDrawAndSwapIfPossible", client_);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  // Idle on next vsync.
+  AdvanceFrame();
+  EXPECT_ACTION("WillBeginImplFrame", client_, 0, 3);
+  EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 1, 3);
+  EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 2, 3);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  // Android onDraw after idle.
+  // --------------------------
+  scheduler_->SetNeedsRedraw();
+  scheduler_->OnDrawForOutputSurface();
+  EXPECT_ACTION("SetNeedsBeginFrames(true)", client_, 0, 3);
+  EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 3);
+  EXPECT_ACTION("ScheduledActionDrawAndSwapIfPossible", client_, 2, 3);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  // Idle on next vsync.
+  AdvanceFrame();
+  EXPECT_ACTION("WillBeginImplFrame", client_, 0, 3);
+  EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 1, 3);
+  EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 2, 3);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  // Main thread initiated activity.
+  // -------------------------------
+  scheduler_->SetNeedsCommit();
+  EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
+  client_->Reset();
+
+  // Next vsync.
+  AdvanceFrame();
+  EXPECT_ACTION("WillBeginImplFrame", client_, 0, 2);
+  EXPECT_ACTION("ScheduledActionSendBeginMainFrame", client_, 1, 2);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  scheduler_->NotifyBeginMainFrameStarted();
+  EXPECT_NO_ACTION(client_);
+
+  // Next vsync.
+  AdvanceFrame();
+  EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  scheduler_->NotifyReadyToCommit();
+  EXPECT_SINGLE_ACTION("ScheduledActionCommit", client_);
+  client_->Reset();
+
+  scheduler_->NotifyReadyToActivate();
+  EXPECT_SINGLE_ACTION("ScheduledActionActivateSyncTree", client_);
+  client_->Reset();
+
+  // Next vsync.
+  AdvanceFrame();
+  EXPECT_ACTION("WillBeginImplFrame", client_, 0, 3);
+  EXPECT_ACTION("ScheduledActionAnimate", client_, 1, 3);
+  EXPECT_ACTION("ScheduledActionInvalidateOutputSurface", client_, 2, 3);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  // Android onDraw.
+  scheduler_->SetNeedsRedraw();
+  scheduler_->OnDrawForOutputSurface();
+  EXPECT_SINGLE_ACTION("ScheduledActionDrawAndSwapIfPossible", client_);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+
+  // Idle on next vsync.
+  AdvanceFrame();
+  EXPECT_ACTION("WillBeginImplFrame", client_, 0, 3);
+  EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 1, 3);
+  EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 2, 3);
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  client_->Reset();
+}
+
 TEST_F(SchedulerTest, AuthoritativeVSyncInterval) {
   SetUpScheduler(true);
 
   base::TimeDelta initial_interval =
       scheduler_->begin_impl_frame_args().interval;
   base::TimeDelta authoritative_interval =
       base::TimeDelta::FromMilliseconds(33);
 
   scheduler_->SetNeedsCommit();
   EXPECT_SCOPED(AdvanceFrame());
@@ skipping 10 matching lines @@
 
   // At the next BeginFrame, authoritative interval is used instead of previous
   // interval.
   EXPECT_NE(initial_interval, scheduler_->begin_impl_frame_args().interval);
   EXPECT_EQ(authoritative_interval,
             scheduler_->begin_impl_frame_args().interval);
 }
 
 }  // namespace
 }  // namespace cc