src/cc/resources/gpu_raster_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_raster_worker_pool.h"
   6
   7 #include "base/debug/trace_event.h"
   8 #include "cc/output/context_provider.h"
   9 #include "cc/resources/resource.h"
  10 #include "cc/resources/resource_provider.h"
  11 #include "cc/resources/scoped_gpu_raster.h"
  12 #include "gpu/command_buffer/client/gles2_interface.h"
  13 #include "third_party/skia/include/gpu/GrContext.h"
  14
  15 namespace cc {
  16
  17 // static
  18 scoped_ptr<RasterWorkerPool> GpuRasterWorkerPool::Create(
  19     base::SequencedTaskRunner* task_runner,
  20     ContextProvider* context_provider,
  21     ResourceProvider* resource_provider) {
  22   return make_scoped_ptr<RasterWorkerPool>(new GpuRasterWorkerPool(
  23       task_runner, context_provider, resource_provider));
  24 }
  25
  26 GpuRasterWorkerPool::GpuRasterWorkerPool(base::SequencedTaskRunner* task_runner,
  27                                          ContextProvider* context_provider,
  28                                          ResourceProvider* resource_provider)
  29     : task_runner_(task_runner),
  30       task_graph_runner_(new TaskGraphRunner),
  31       namespace_token_(task_graph_runner_->GetNamespaceToken()),
  32       context_provider_(context_provider),
  33       resource_provider_(resource_provider),
  34       run_tasks_on_origin_thread_pending_(false),
  35       raster_tasks_pending_(false),
  36       raster_tasks_required_for_activation_pending_(false),
  37       raster_finished_weak_ptr_factory_(this),
  38       weak_ptr_factory_(this) {
  39   DCHECK(context_provider_);
  40 }
  41
  42 GpuRasterWorkerPool::~GpuRasterWorkerPool() {
  43   DCHECK_EQ(0u, completed_tasks_.size());
  44 }
  45
  46 Rasterizer* GpuRasterWorkerPool::AsRasterizer() {
  47   return this;
  48 }
  49
  50 void GpuRasterWorkerPool::SetClient(RasterizerClient* client) {
  51   client_ = client;
  52 }
  53
  54 void GpuRasterWorkerPool::Shutdown() {
  55   TRACE_EVENT0("cc", "GpuRasterWorkerPool::Shutdown");
  56
  57   TaskGraph empty;
  58   task_graph_runner_->ScheduleTasks(namespace_token_, &empty);
  59   task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
  60 }
  61
  62 void GpuRasterWorkerPool::ScheduleTasks(RasterTaskQueue* queue) {
  63   TRACE_EVENT0("cc", "GpuRasterWorkerPool::ScheduleTasks");
  64
  65   DCHECK_EQ(queue->required_for_activation_count,
  66             static_cast<size_t>(
  67                 std::count_if(queue->items.begin(),
  68                               queue->items.end(),
  69                               RasterTaskQueue::Item::IsRequiredForActivation)));
  70
  71   raster_tasks_pending_ = true;
  72   raster_tasks_required_for_activation_pending_ = true;
  73
  74   unsigned priority = kRasterTaskPriorityBase;
  75
  76   graph_.Reset();
  77
  78   // Cancel existing OnRasterFinished callbacks.
  79   raster_finished_weak_ptr_factory_.InvalidateWeakPtrs();
  80
  81   scoped_refptr<RasterizerTask>
  82       new_raster_required_for_activation_finished_task(
  83           CreateRasterRequiredForActivationFinishedTask(
  84               queue->required_for_activation_count,
  85               task_runner_.get(),
  86               base::Bind(
  87                   &GpuRasterWorkerPool::OnRasterRequiredForActivationFinished,
  88                   raster_finished_weak_ptr_factory_.GetWeakPtr())));
  89   scoped_refptr<RasterizerTask> new_raster_finished_task(
  90       CreateRasterFinishedTask(
  91           task_runner_.get(),
  92           base::Bind(&GpuRasterWorkerPool::OnRasterFinished,
  93                      raster_finished_weak_ptr_factory_.GetWeakPtr())));
  94
  95   for (RasterTaskQueue::Item::Vector::const_iterator it = queue->items.begin();
  96        it != queue->items.end();
  97        ++it) {
  98     const RasterTaskQueue::Item& item = *it;
  99     RasterTask* task = item.task;
 100     DCHECK(!task->HasCompleted());
 101
 102     if (item.required_for_activation) {
 103       graph_.edges.push_back(TaskGraph::Edge(
 104           task, new_raster_required_for_activation_finished_task.get()));
 105     }
 106
 107     InsertNodesForRasterTask(&graph_, task, task->dependencies(), priority++);
 108
 109     graph_.edges.push_back(
 110         TaskGraph::Edge(task, new_raster_finished_task.get()));
 111   }
 112
 113   InsertNodeForTask(&graph_,
 114                     new_raster_required_for_activation_finished_task.get(),
 115                     kRasterRequiredForActivationFinishedTaskPriority,
 116                     queue->required_for_activation_count);
 117   InsertNodeForTask(&graph_,
 118                     new_raster_finished_task.get(),
 119                     kRasterFinishedTaskPriority,
 120                     queue->items.size());
 121
 122   ScheduleTasksOnOriginThread(this, &graph_);
 123   task_graph_runner_->ScheduleTasks(namespace_token_, &graph_);
 124
 125   ScheduleRunTasksOnOriginThread();
 126
 127   raster_finished_task_ = new_raster_finished_task;
 128   raster_required_for_activation_finished_task_ =
 129       new_raster_required_for_activation_finished_task;
 130 }
 131
 132 void GpuRasterWorkerPool::CheckForCompletedTasks() {
 133   TRACE_EVENT0("cc", "GpuRasterWorkerPool::CheckForCompletedTasks");
 134
 135   task_graph_runner_->CollectCompletedTasks(namespace_token_,
 136                                             &completed_tasks_);
 137   for (Task::Vector::const_iterator it = completed_tasks_.begin();
 138        it != completed_tasks_.end();
 139        ++it) {
 140     RasterizerTask* task = static_cast<RasterizerTask*>(it->get());
 141
 142     task->WillComplete();
 143     task->CompleteOnOriginThread(this);
 144     task->DidComplete();
 145
 146     task->RunReplyOnOriginThread();
 147   }
 148   completed_tasks_.clear();
 149 }
 150
 151 SkCanvas* GpuRasterWorkerPool::AcquireCanvasForRaster(RasterTask* task) {
 152   return resource_provider_->MapGpuRasterBuffer(task->resource()->id());
 153 }
 154
 155 void GpuRasterWorkerPool::ReleaseCanvasForRaster(RasterTask* task) {
 156   resource_provider_->UnmapGpuRasterBuffer(task->resource()->id());
 157 }
 158
 159 void GpuRasterWorkerPool::OnRasterFinished() {
 160   TRACE_EVENT0("cc", "GpuRasterWorkerPool::OnRasterFinished");
 161
 162   DCHECK(raster_tasks_pending_);
 163   raster_tasks_pending_ = false;
 164   client_->DidFinishRunningTasks();
 165 }
 166
 167 void GpuRasterWorkerPool::OnRasterRequiredForActivationFinished() {
 168   TRACE_EVENT0("cc",
 169                "GpuRasterWorkerPool::OnRasterRequiredForActivationFinished");
 170
 171   DCHECK(raster_tasks_required_for_activation_pending_);
 172   raster_tasks_required_for_activation_pending_ = false;
 173   client_->DidFinishRunningTasksRequiredForActivation();
 174 }
 175
 176 void GpuRasterWorkerPool::ScheduleRunTasksOnOriginThread() {
 177   if (run_tasks_on_origin_thread_pending_)
 178     return;
 179
 180   task_runner_->PostTask(
 181       FROM_HERE,
 182       base::Bind(&GpuRasterWorkerPool::RunTasksOnOriginThread,
 183                  weak_ptr_factory_.GetWeakPtr()));
 184   run_tasks_on_origin_thread_pending_ = true;
 185 }
 186
 187 void GpuRasterWorkerPool::RunTasksOnOriginThread() {
 188   TRACE_EVENT0("cc", "GpuRasterWorkerPool::RunTasksOnOriginThread");
 189
 190   DCHECK(run_tasks_on_origin_thread_pending_);
 191   run_tasks_on_origin_thread_pending_ = false;
 192
 193   ScopedGpuRaster gpu_raster(context_provider_);
 194   task_graph_runner_->RunUntilIdle();
 195 }
 196
 197 }  // namespace cc