cc: Remove ScheduleOnOriginThread() and CompleteOnOriginThread().

cc/tiles/tile_manager.cc

 // Copyright 2012 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/tiles/tile_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 25 matching lines @@
 // a tile is of solid color.
 const bool kUseColorEstimator = true;
 
 DEFINE_SCOPED_UMA_HISTOGRAM_AREA_TIMER(
     ScopedRasterTaskTimer,
     "Compositing.%s.RasterTask.RasterUs",
     "Compositing.%s.RasterTask.RasterPixelsPerMs");
 
 class RasterTaskImpl : public TileTask {
  public:
-  RasterTaskImpl(const Resource* resource,
+  RasterTaskImpl(Resource* resource,
                  scoped_refptr<RasterSource> raster_source,
                  const gfx::Rect& content_rect,
                  const gfx::Rect& invalid_content_rect,
                  float contents_scale,
                  const RasterSource::PlaybackSettings& playback_settings,
                  TileResolution tile_resolution,
                  int layer_id,
                  uint64_t source_prepare_tiles_id,
-                 const void* tile,
+                 Tile* tile,
                  uint64_t new_content_id,
                  uint64_t previous_content_id,
                  uint64_t resource_content_id,
                  int source_frame_number,
-                 const base::Callback<void(bool)>& reply,
+                 std::unique_ptr<RasterBuffer> raster_buffer,
                  TileTask::Vector* dependencies,
                  bool supports_concurrent_execution)
-      : TileTask(supports_concurrent_execution, dependencies),
+      : TileTask(TileTask::Type::RASTER,
+                 supports_concurrent_execution,
+                 dependencies),
         resource_(resource),
         raster_source_(std::move(raster_source)),
         content_rect_(content_rect),
         invalid_content_rect_(invalid_content_rect),
         contents_scale_(contents_scale),
         playback_settings_(playback_settings),
         tile_resolution_(tile_resolution),
         layer_id_(layer_id),
         source_prepare_tiles_id_(source_prepare_tiles_id),
         tile_(tile),
         new_content_id_(new_content_id),
         previous_content_id_(previous_content_id),
         resource_content_id_(resource_content_id),
         source_frame_number_(source_frame_number),
-        reply_(reply) {}
+        raster_buffer_(std::move(raster_buffer)) {}
 
   // Overridden from Task:
   void RunOnWorkerThread() override {
     TRACE_EVENT1("cc", "RasterizerTaskImpl::RunOnWorkerThread",
                  "source_prepare_tiles_id", source_prepare_tiles_id_);
 
     DCHECK(raster_source_.get());
     DCHECK(raster_buffer_);
 
     frame_viewer_instrumentation::ScopedRasterTask raster_task(
         tile_, tile_resolution_, source_frame_number_, layer_id_);
     ScopedRasterTaskTimer timer;
     timer.SetArea(content_rect_.size().GetArea());
 
     DCHECK(raster_source_);
 
     raster_buffer_->Playback(raster_source_.get(), content_rect_,
                              invalid_content_rect_, new_content_id_,
                              contents_scale_, playback_settings_);
   }
 
-  // Overridden from TileTask:
-  void ScheduleOnOriginThread(RasterBufferProvider* provider) override {
-    DCHECK(!raster_buffer_);
-    raster_buffer_ = provider->AcquireBufferForRaster(
-        resource_, resource_content_id_, previous_content_id_);
-  }
-  void CompleteOnOriginThread(RasterBufferProvider* provider) override {
-    provider->ReleaseBufferForRaster(std::move(raster_buffer_));
-    reply_.Run(!state().IsFinished());
-  }
-
  protected:
   ~RasterTaskImpl() override { DCHECK(!raster_buffer_); }
 
- private:
-  const Resource* resource_;
+  // TODO(prashant.n) Move this class from unnamed namespace to
+  // tile_task_manager.cc and use friend class. crbug.com/599863.
+ public:
+  Resource* resource_;
   scoped_refptr<RasterSource> raster_source_;
   gfx::Rect content_rect_;
   gfx::Rect invalid_content_rect_;
   float contents_scale_;
   RasterSource::PlaybackSettings playback_settings_;
   TileResolution tile_resolution_;
   int layer_id_;
   uint64_t source_prepare_tiles_id_;
-  const void* tile_;
+  Tile* tile_;
   uint64_t new_content_id_;
   uint64_t previous_content_id_;
   uint64_t resource_content_id_;
   int source_frame_number_;
-  const base::Callback<void(bool)> reply_;
   std::unique_ptr<RasterBuffer> raster_buffer_;
 
+ private:
   DISALLOW_COPY_AND_ASSIGN(RasterTaskImpl);
 };
 
 TaskCategory TaskCategoryForTileTask(TileTask* task,
                                      bool use_foreground_category) {
   if (!task->supports_concurrent_execution())
     return TASK_CATEGORY_NONCONCURRENT_FOREGROUND;
 
   if (use_foreground_category)
     return TASK_CATEGORY_FOREGROUND;
@@ skipping 39 matching lines @@
 }
 
 void InsertNodeForDecodeTask(TaskGraph* graph,
                              TileTask* task,
                              bool use_foreground_category,
                              uint16_t priority) {
   uint32_t dependency_count = 0u;
   if (task->dependencies().size()) {
     DCHECK_EQ(task->dependencies().size(), 1u);
     auto* dependency = task->dependencies()[0].get();
-    if (!dependency->HasCompleted()) {
+    if (!dependency->state().IsCompleted()) {
       InsertNodeForDecodeTask(graph, dependency, use_foreground_category,
                               priority);
       graph->edges.push_back(TaskGraph::Edge(dependency, task));
       dependency_count = 1u;
     }
   }
   InsertNodeForTask(graph, task,
                     TaskCategoryForTileTask(task, use_foreground_category),
                     priority, dependency_count);
 }
 
 void InsertNodesForRasterTask(TaskGraph* graph,
                               TileTask* raster_task,
                               const TileTask::Vector& decode_tasks,
                               size_t priority,
                               bool use_foreground_category) {
   size_t dependencies = 0u;
 
   // Insert image decode tasks.
   for (TileTask::Vector::const_iterator it = decode_tasks.begin();
        it != decode_tasks.end(); ++it) {
     TileTask* decode_task = it->get();
 
     // Skip if already decoded.
-    if (decode_task->HasCompleted())
+    if (decode_task->state().IsCompleted())
       continue;
 
     dependencies++;
 
     // Add decode task if it doesn't already exist in graph.
     TaskGraph::Node::Vector::iterator decode_it =
         std::find_if(graph->nodes.begin(), graph->nodes.end(),
                      [decode_task](const TaskGraph::Node& node) {
                        return node.task == decode_task;
                      });
@@ skipping 22 matching lines @@
       graph, raster_task,
       TaskCategoryForTileTask(raster_task, use_foreground_category), priority,
       dependencies);
 }
 
 class TaskSetFinishedTaskImpl : public TileTask {
  public:
   explicit TaskSetFinishedTaskImpl(
       base::SequencedTaskRunner* task_runner,
       const base::Closure& on_task_set_finished_callback)
-      : TileTask(true),
+      : TileTask(TileTask::Type::DEFAULT, true),
         task_runner_(task_runner),
         on_task_set_finished_callback_(on_task_set_finished_callback) {}
 
   // Overridden from Task:
   void RunOnWorkerThread() override {
     TRACE_EVENT0("cc", "TaskSetFinishedTaskImpl::RunOnWorkerThread");
     TaskSetFinished();
   }
 
-  // Overridden from TileTask:
-  void ScheduleOnOriginThread(RasterBufferProvider* provider) override {}
-  void CompleteOnOriginThread(RasterBufferProvider* provider) override {}
-
  protected:
   ~TaskSetFinishedTaskImpl() override {}
 
   void TaskSetFinished() {
     task_runner_->PostTask(FROM_HERE, on_task_set_finished_callback_);
   }
 
  private:
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   const base::Closure on_task_set_finished_callback_;
@@ skipping 67 matching lines @@
   global_state_ = GlobalStateThatImpactsTilePriority();
 
   // This cancels tasks if possible, finishes pending tasks, and release any
   // uninitialized resources.
   tile_task_manager_->Shutdown();
 
   // Now that all tasks have been finished, we can clear any
   // |orphan_tasks_|.
   orphan_tasks_.clear();
 
-  tile_task_manager_->CheckForCompletedTasks();
+  CheckForCompletedTasks();
 
   FreeResourcesForReleasedTiles();
   CleanUpReleasedTiles();
 
   tile_task_manager_ = nullptr;
   resource_pool_ = nullptr;
   more_tiles_need_prepare_check_notifier_.Cancel();
   signals_check_notifier_.Cancel();
   task_set_finished_weak_ptr_factory_.InvalidateWeakPtrs();
 }
@@ skipping 91 matching lines @@
     TRACE_EVENT_INSTANT0("cc", "PrepareTiles aborted",
                          TRACE_EVENT_SCOPE_THREAD);
     return false;
   }
 
   signals_.reset();
   global_state_ = state;
 
   // We need to call CheckForCompletedTasks() once in-between each call
   // to ScheduleTasks() to prevent canceled tasks from being scheduled.
-  if (!did_check_for_completed_tasks_since_last_schedule_tasks_) {
-    tile_task_manager_->CheckForCompletedTasks();
-    did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
-  }
+  if (!did_check_for_completed_tasks_since_last_schedule_tasks_)
+    CheckForCompletedTasks();
 
   FreeResourcesForReleasedTiles();
   CleanUpReleasedTiles();
 
   PrioritizedTileVector tiles_that_need_to_be_rasterized;
   std::unique_ptr<RasterTilePriorityQueue> raster_priority_queue(
       client_->BuildRasterQueue(global_state_.tree_priority,
                                 RasterTilePriorityQueue::Type::ALL));
   AssignGpuMemoryToTiles(raster_priority_queue.get(),
                          scheduled_raster_task_limit_,
@@ skipping 14 matching lines @@
 }
 
 void TileManager::Flush() {
   TRACE_EVENT0("cc", "TileManager::Flush");
 
   if (!tile_task_manager_) {
     TRACE_EVENT_INSTANT0("cc", "Flush aborted", TRACE_EVENT_SCOPE_THREAD);
     return;
   }
 
-  tile_task_manager_->CheckForCompletedTasks();
-
-  did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
+  CheckForCompletedTasks();
 
   TRACE_EVENT_INSTANT1("cc", "DidFlush", TRACE_EVENT_SCOPE_THREAD, "stats",
                        RasterTaskCompletionStatsAsValue(flush_stats_));
   flush_stats_ = RasterTaskCompletionStats();
 }
 
 std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
 TileManager::BasicStateAsValue() const {
   std::unique_ptr<base::trace_event::TracedValue> value(
       new base::trace_event::TracedValue());
@@ skipping 265 matching lines @@
   for (auto& prioritized_tile : tiles_that_need_to_be_rasterized) {
     Tile* tile = prioritized_tile.tile();
 
     DCHECK(tile->draw_info().requires_resource());
     DCHECK(!tile->draw_info().resource_);
 
     if (!tile->raster_task_)
       tile->raster_task_ = CreateRasterTask(prioritized_tile);
 
     TileTask* task = tile->raster_task_.get();
-    DCHECK(!task->HasCompleted());
+    DCHECK(!task->state().IsCompleted());
 
     if (tile->required_for_activation()) {
       required_for_activate_count++;
       graph_.edges.push_back(
           TaskGraph::Edge(task, required_for_activation_done_task.get()));
     }
     if (tile->required_for_draw()) {
       required_for_draw_count++;
       graph_.edges.push_back(
           TaskGraph::Edge(task, required_for_draw_done_task.get()));
@@ skipping 99 matching lines @@
     if (task)
       decode_tasks.push_back(task);
 
     if (need_to_unref_when_finished)
       ++it;
     else
       it = images.erase(it);
   }
 
   bool supports_concurrent_execution = !use_gpu_rasterization_;
+  std::unique_ptr<RasterBuffer> raster_buffer =
+      tile_task_manager_->GetRasterBufferProvider()->AcquireBufferForRaster(
+          resource, resource_content_id, tile->invalidated_id());
   return make_scoped_refptr(new RasterTaskImpl(
       resource, prioritized_tile.raster_source(), tile->content_rect(),
       tile->invalidated_content_rect(), tile->contents_scale(),
       playback_settings, prioritized_tile.priority().resolution,
-      tile->layer_id(), prepare_tiles_count_, static_cast<const void*>(tile),
-      tile->id(), tile->invalidated_id(), resource_content_id,
-      tile->source_frame_number(),
-      base::Bind(&TileManager::OnRasterTaskCompleted, base::Unretained(this),
-                 tile->id(), resource),
-      &decode_tasks, supports_concurrent_execution));
+      tile->layer_id(), prepare_tiles_count_, tile, tile->id(),
+      tile->invalidated_id(), resource_content_id, tile->source_frame_number(),
+      std::move(raster_buffer), &decode_tasks, supports_concurrent_execution));
 }
 
-void TileManager::OnRasterTaskCompleted(
-    Tile::Id tile_id,
-    Resource* resource,
-    bool was_canceled) {
-  DCHECK(tiles_.find(tile_id) != tiles_.end());
+void TileManager::CheckForCompletedTasks() {
+  Task::Vector completed_tasks;
+  tile_task_manager_->CollectCompletedTasks(&completed_tasks);
 
-  Tile* tile = tiles_[tile_id];
-  TileDrawInfo& draw_info = tile->draw_info();
-  DCHECK(tile->raster_task_.get());
-  orphan_tasks_.push_back(tile->raster_task_);
-  tile->raster_task_ = nullptr;
+  for (auto task : completed_tasks) {
+    TileTask* tile_task = static_cast<TileTask*>(task.get());
+    switch (tile_task->type()) {
+      case TileTask::Type::RASTER:
+        OnRasterTaskCompleted(tile_task);
+        break;
+      case TileTask::Type::IMAGE_DECODE:
+        image_decode_controller_->OnImageDecodeTaskCompleted(tile_task);
+        break;
+      case TileTask::Type::IMAGE_UPLOAD:
+        image_decode_controller_->OnImageUploadTaskCompleted(tile_task);
+        break;
+      case TileTask::Type::DEFAULT:
+        // Do nothing.
+        break;
+      default:
+        NOTREACHED();
+    }
+
+    task->state().DidComplete();
+  }
+
+  completed_tasks.clear();
+  did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
+}
+
+void TileManager::OnRasterTaskCompleted(TileTask* task) {
+  DCHECK(task);
+  RasterTaskImpl* raster_task = static_cast<RasterTaskImpl*>(task);
+  tile_task_manager_->GetRasterBufferProvider()->ReleaseBufferForRaster(
+      std::move(raster_task->raster_buffer_));
+
+  DCHECK(tiles_.find(raster_task->tile_->id()) != tiles_.end());
+  TileDrawInfo& draw_info = raster_task->tile_->draw_info();
+  DCHECK(raster_task->tile_->raster_task_.get());
+  orphan_tasks_.push_back(raster_task->tile_->raster_task_);
+  raster_task->tile_->raster_task_ = nullptr;
 
   // Unref all the images.
-  auto images_it = scheduled_draw_images_.find(tile->id());
+  auto images_it = scheduled_draw_images_.find(raster_task->tile_->id());
   const std::vector<DrawImage>& images = images_it->second;
   for (const auto& image : images)
     image_decode_controller_->UnrefImage(image);
   scheduled_draw_images_.erase(images_it);
 
-  if (was_canceled) {
+  if (raster_task->state().IsCanceled()) {
     ++flush_stats_.canceled_count;
     // TODO(ericrk): If more partial raster work is done in the future, it may
     // be worth returning the resource to the pool with its previous ID (not
     // currently tracked). crrev.com/1370333002/#ps40001 has a possible method
     // of achieving this.
-    resource_pool_->ReleaseResource(resource, 0 /* content_id */);
+    resource_pool_->ReleaseResource(raster_task->resource_, 0 /* content_id */);
     return;
   }
 
   ++flush_stats_.completed_count;
 
   draw_info.set_use_resource();
-  draw_info.resource_ = resource;
-  draw_info.contents_swizzled_ = DetermineResourceRequiresSwizzle(tile);
+  draw_info.resource_ = raster_task->resource_;
+  draw_info.contents_swizzled_ =
+      DetermineResourceRequiresSwizzle(raster_task->tile_);
 
   DCHECK(draw_info.IsReadyToDraw());
   draw_info.set_was_ever_ready_to_draw();
 
-  client_->NotifyTileStateChanged(tile);
+  client_->NotifyTileStateChanged(raster_task->tile_);
 }
 
 ScopedTilePtr TileManager::CreateTile(const Tile::CreateInfo& info,
                                       int layer_id,
                                       int source_frame_number,
                                       int flags) {
   // We need to have a tile task worker pool to do anything meaningful with
   // tiles.
   DCHECK(tile_task_manager_);
   ScopedTilePtr tile(
@@ skipping 42 matching lines @@
 }
 
 bool TileManager::IsReadyToDraw() const {
   TRACE_EVENT0("cc", "TileManager::IsReadyToDraw");
   return AreRequiredTilesReadyToDraw(
       RasterTilePriorityQueue::Type::REQUIRED_FOR_DRAW);
 }
 
 void TileManager::CheckAndIssueSignals() {
   TRACE_EVENT0("cc", "TileManager::CheckAndIssueSignals");
-  tile_task_manager_->CheckForCompletedTasks();
-  did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
+  CheckForCompletedTasks();
 
   // Ready to activate.
   if (signals_.ready_to_activate && !signals_.did_notify_ready_to_activate) {
     signals_.ready_to_activate = false;
     if (IsReadyToActivate()) {
       TRACE_EVENT0("disabled-by-default-cc.debug",
                    "TileManager::CheckAndIssueSignals - ready to activate");
       signals_.did_notify_ready_to_activate = true;
       client_->NotifyReadyToActivate();
     }
@@ skipping 18 matching lines @@
       TRACE_EVENT0(
           "disabled-by-default-cc.debug",
           "TileManager::CheckAndIssueSignals - all tile tasks completed");
       signals_.did_notify_all_tile_tasks_completed = true;
       client_->NotifyAllTileTasksCompleted();
     }
   }
 }
 
 void TileManager::CheckIfMoreTilesNeedToBePrepared() {
-  tile_task_manager_->CheckForCompletedTasks();
-  did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
+  CheckForCompletedTasks();
 
   // When OOM, keep re-assigning memory until we reach a steady state
   // where top-priority tiles are initialized.
   PrioritizedTileVector tiles_that_need_to_be_rasterized;
   std::unique_ptr<RasterTilePriorityQueue> raster_priority_queue(
       client_->BuildRasterQueue(global_state_.tree_priority,
                                 RasterTilePriorityQueue::Type::ALL));
   AssignGpuMemoryToTiles(raster_priority_queue.get(),
                          scheduled_raster_task_limit_,
                          &tiles_that_need_to_be_rasterized);
@@ skipping 173 matching lines @@
 void TileManager::Signals::reset() {
   ready_to_activate = false;
   did_notify_ready_to_activate = false;
   ready_to_draw = false;
   did_notify_ready_to_draw = false;
   all_tile_tasks_completed = false;
   did_notify_all_tile_tasks_completed = false;
 }
 
 }  // namespace cc