cc/resources/gpu_tile_task_worker_pool.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 "cc/resources/gpu_tile_task_worker_pool.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/debug/trace_event.h"
  10 #include "cc/resources/raster_buffer.h"
  11 #include "cc/resources/raster_source.h"
  12 #include "cc/resources/resource.h"
  13 #include "cc/resources/scoped_gpu_raster.h"
  14 #include "gpu/command_buffer/client/gles2_interface.h"
  15 #include "third_party/skia/include/core/SkMultiPictureDraw.h"
  16 #include "third_party/skia/include/core/SkPictureRecorder.h"
  17 #include "third_party/skia/include/core/SkSurface.h"
  18 #include "third_party/skia/include/gpu/GrContext.h"
  19
  20 namespace cc {
  21 namespace {
  22
  23 class RasterBufferImpl : public RasterBuffer {
  24  public:
  25   RasterBufferImpl() {}
  26
  27   // Overridden from RasterBuffer:
  28   void Playback(const RasterSource* raster_source,
  29                 const gfx::Rect& rect,
  30                 float scale) override {
  31     // Don't do anything.
  32   }
  33
  34  private:
  35   DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl);
  36 };
  37
  38 }  // namespace
  39 // static
  40 scoped_ptr<TileTaskWorkerPool> GpuTileTaskWorkerPool::Create(
  41     base::SequencedTaskRunner* task_runner,
  42     TaskGraphRunner* task_graph_runner) {
  43   return make_scoped_ptr<TileTaskWorkerPool>(
  44       new GpuTileTaskWorkerPool(task_runner, task_graph_runner));
  45 }
  46
  47 // TODO(hendrikw): This class should be removed.  See crbug.com/444938.
  48 GpuTileTaskWorkerPool::GpuTileTaskWorkerPool(
  49     base::SequencedTaskRunner* task_runner,
  50     TaskGraphRunner* task_graph_runner)
  51     : task_runner_(task_runner),
  52       task_graph_runner_(task_graph_runner),
  53       namespace_token_(task_graph_runner_->GetNamespaceToken()),
  54       run_tasks_on_origin_thread_pending_(false),
  55       task_set_finished_weak_ptr_factory_(this),
  56       weak_ptr_factory_(this) {
  57 }
  58
  59 GpuTileTaskWorkerPool::~GpuTileTaskWorkerPool() {
  60   DCHECK_EQ(0u, completed_tasks_.size());
  61 }
  62
  63 TileTaskRunner* GpuTileTaskWorkerPool::AsTileTaskRunner() {
  64   return this;
  65 }
  66
  67 void GpuTileTaskWorkerPool::SetClient(TileTaskRunnerClient* client) {
  68   client_ = client;
  69 }
  70
  71 void GpuTileTaskWorkerPool::Shutdown() {
  72   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::Shutdown");
  73
  74   TaskGraph empty;
  75   task_graph_runner_->ScheduleTasks(namespace_token_, &empty);
  76   task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
  77 }
  78
  79 void GpuTileTaskWorkerPool::ScheduleTasks(TileTaskQueue* queue) {
  80   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::ScheduleTasks");
  81
  82   // Mark all task sets as pending.
  83   tasks_pending_.set();
  84
  85   unsigned priority = kTileTaskPriorityBase;
  86
  87   graph_.Reset();
  88
  89   // Cancel existing OnTaskSetFinished callbacks.
  90   task_set_finished_weak_ptr_factory_.InvalidateWeakPtrs();
  91
  92   scoped_refptr<TileTask> new_task_set_finished_tasks[kNumberOfTaskSets];
  93
  94   size_t task_count[kNumberOfTaskSets] = {0};
  95
  96   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
  97     new_task_set_finished_tasks[task_set] = CreateTaskSetFinishedTask(
  98         task_runner_.get(),
  99         base::Bind(&GpuTileTaskWorkerPool::OnTaskSetFinished,
 100                    task_set_finished_weak_ptr_factory_.GetWeakPtr(), task_set));
 101   }
 102
 103   for (TileTaskQueue::Item::Vector::const_iterator it = queue->items.begin();
 104        it != queue->items.end(); ++it) {
 105     const TileTaskQueue::Item& item = *it;
 106     RasterTask* task = item.task;
 107     DCHECK(!task->HasCompleted());
 108
 109     for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 110       if (!item.task_sets[task_set])
 111         continue;
 112
 113       ++task_count[task_set];
 114
 115       graph_.edges.push_back(
 116           TaskGraph::Edge(task, new_task_set_finished_tasks[task_set].get()));
 117     }
 118
 119     InsertNodesForRasterTask(&graph_, task, task->dependencies(), priority++);
 120   }
 121
 122   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 123     InsertNodeForTask(&graph_, new_task_set_finished_tasks[task_set].get(),
 124                       kTaskSetFinishedTaskPriority, task_count[task_set]);
 125   }
 126
 127   ScheduleTasksOnOriginThread(this, &graph_);
 128   task_graph_runner_->ScheduleTasks(namespace_token_, &graph_);
 129
 130   std::copy(new_task_set_finished_tasks,
 131             new_task_set_finished_tasks + kNumberOfTaskSets,
 132             task_set_finished_tasks_);
 133 }
 134
 135 void GpuTileTaskWorkerPool::CheckForCompletedTasks() {
 136   TRACE_EVENT0("cc", "GpuTileTaskWorkerPool::CheckForCompletedTasks");
 137
 138   task_graph_runner_->CollectCompletedTasks(namespace_token_,
 139                                             &completed_tasks_);
 140   CompleteTasks(completed_tasks_);
 141   completed_tasks_.clear();
 142 }
 143
 144 void GpuTileTaskWorkerPool::CompleteTasks(const Task::Vector& tasks) {
 145   for (auto& task : tasks) {
 146     RasterTask* raster_task = static_cast<RasterTask*>(task.get());
 147
 148     raster_task->WillComplete();
 149     raster_task->CompleteOnOriginThread(this);
 150     raster_task->DidComplete();
 151
 152     raster_task->RunReplyOnOriginThread();
 153   }
 154   completed_tasks_.clear();
 155 }
 156
 157 scoped_ptr<RasterBuffer> GpuTileTaskWorkerPool::AcquireBufferForRaster(
 158     const Resource* resource) {
 159   return make_scoped_ptr<RasterBuffer>(new RasterBufferImpl());
 160 }
 161
 162 void GpuTileTaskWorkerPool::ReleaseBufferForRaster(
 163     scoped_ptr<RasterBuffer> buffer) {
 164   // Nothing to do here. RasterBufferImpl destructor cleans up after itself.
 165 }
 166
 167 void GpuTileTaskWorkerPool::OnTaskSetFinished(TaskSet task_set) {
 168   TRACE_EVENT1("cc", "GpuTileTaskWorkerPool::OnTaskSetFinished", "task_set",
 169                task_set);
 170
 171   DCHECK(tasks_pending_[task_set]);
 172   tasks_pending_[task_set] = false;
 173   client_->DidFinishRunningTileTasks(task_set);
 174 }
 175
 176 }  // namespace cc