cc/raster/zero_copy_tile_task_worker_pool.cc

   1 // Copyright 2013 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/raster/zero_copy_tile_task_worker_pool.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/strings/stringprintf.h"
  10 #include "base/trace_event/trace_event.h"
  11 #include "base/trace_event/trace_event_argument.h"
  12 #include "cc/debug/traced_value.h"
  13 #include "cc/raster/raster_buffer.h"
  14 #include "cc/resources/platform_color.h"
  15 #include "cc/resources/resource.h"
  16 #include "ui/gfx/gpu_memory_buffer.h"
  17
  18 namespace cc {
  19 namespace {
  20
  21 class RasterBufferImpl : public RasterBuffer {
  22  public:
  23   RasterBufferImpl(ResourceProvider* resource_provider,
  24                    const Resource* resource)
  25       : lock_(resource_provider, resource->id()), resource_(resource) {}
  26
  27   // Overridden from RasterBuffer:
  28   void Playback(const RasterSource* raster_source,
  29                 const gfx::Rect& raster_full_rect,
  30                 const gfx::Rect& raster_dirty_rect,
  31                 uint64_t new_content_id,
  32                 float scale) override {
  33     gfx::GpuMemoryBuffer* gpu_memory_buffer = lock_.GetGpuMemoryBuffer();
  34     if (!gpu_memory_buffer)
  35       return;
  36     void* data = NULL;
  37     bool rv = gpu_memory_buffer->Map(&data);
  38     DCHECK(rv);
  39     int stride;
  40     gpu_memory_buffer->GetStride(&stride);
  41     // TileTaskWorkerPool::PlaybackToMemory only supports unsigned strides.
  42     DCHECK_GE(stride, 0);
  43     // TODO(danakj): Implement partial raster with raster_dirty_rect.
  44     TileTaskWorkerPool::PlaybackToMemory(
  45         data, resource_->format(), resource_->size(),
  46         static_cast<size_t>(stride), raster_source, raster_full_rect,
  47         raster_full_rect, scale);
  48     gpu_memory_buffer->Unmap();
  49   }
  50
  51  private:
  52   ResourceProvider::ScopedWriteLockGpuMemoryBuffer lock_;
  53   const Resource* resource_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl);
  56 };
  57
  58 }  // namespace
  59
  60 // static
  61 scoped_ptr<TileTaskWorkerPool> ZeroCopyTileTaskWorkerPool::Create(
  62     base::SequencedTaskRunner* task_runner,
  63     TaskGraphRunner* task_graph_runner,
  64     ResourceProvider* resource_provider) {
  65   return make_scoped_ptr<TileTaskWorkerPool>(new ZeroCopyTileTaskWorkerPool(
  66       task_runner, task_graph_runner, resource_provider));
  67 }
  68
  69 ZeroCopyTileTaskWorkerPool::ZeroCopyTileTaskWorkerPool(
  70     base::SequencedTaskRunner* task_runner,
  71     TaskGraphRunner* task_graph_runner,
  72     ResourceProvider* resource_provider)
  73     : task_runner_(task_runner),
  74       task_graph_runner_(task_graph_runner),
  75       namespace_token_(task_graph_runner->GetNamespaceToken()),
  76       resource_provider_(resource_provider),
  77       task_set_finished_weak_ptr_factory_(this) {
  78 }
  79
  80 ZeroCopyTileTaskWorkerPool::~ZeroCopyTileTaskWorkerPool() {
  81 }
  82
  83 TileTaskRunner* ZeroCopyTileTaskWorkerPool::AsTileTaskRunner() {
  84   return this;
  85 }
  86
  87 void ZeroCopyTileTaskWorkerPool::SetClient(TileTaskRunnerClient* client) {
  88   client_ = client;
  89 }
  90
  91 void ZeroCopyTileTaskWorkerPool::Shutdown() {
  92   TRACE_EVENT0("cc", "ZeroCopyTileTaskWorkerPool::Shutdown");
  93
  94   TaskGraph empty;
  95   task_graph_runner_->ScheduleTasks(namespace_token_, &empty);
  96   task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
  97 }
  98
  99 void ZeroCopyTileTaskWorkerPool::ScheduleTasks(TileTaskQueue* queue) {
 100   TRACE_EVENT0("cc", "ZeroCopyTileTaskWorkerPool::ScheduleTasks");
 101
 102   if (tasks_pending_.none())
 103     TRACE_EVENT_ASYNC_BEGIN0("cc", "ScheduledTasks", this);
 104
 105   // Mark all task sets as pending.
 106   tasks_pending_.set();
 107
 108   size_t priority = kTileTaskPriorityBase;
 109
 110   graph_.Reset();
 111
 112   // Cancel existing OnTaskSetFinished callbacks.
 113   task_set_finished_weak_ptr_factory_.InvalidateWeakPtrs();
 114
 115   scoped_refptr<TileTask> new_task_set_finished_tasks[kNumberOfTaskSets];
 116
 117   size_t task_count[kNumberOfTaskSets] = {0};
 118
 119   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 120     new_task_set_finished_tasks[task_set] = CreateTaskSetFinishedTask(
 121         task_runner_.get(),
 122         base::Bind(&ZeroCopyTileTaskWorkerPool::OnTaskSetFinished,
 123                    task_set_finished_weak_ptr_factory_.GetWeakPtr(), task_set));
 124   }
 125
 126   for (TileTaskQueue::Item::Vector::const_iterator it = queue->items.begin();
 127        it != queue->items.end(); ++it) {
 128     const TileTaskQueue::Item& item = *it;
 129     RasterTask* task = item.task;
 130     DCHECK(!task->HasCompleted());
 131
 132     for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 133       if (!item.task_sets[task_set])
 134         continue;
 135
 136       ++task_count[task_set];
 137
 138       graph_.edges.push_back(
 139           TaskGraph::Edge(task, new_task_set_finished_tasks[task_set].get()));
 140     }
 141
 142     InsertNodesForRasterTask(&graph_, task, task->dependencies(), priority++);
 143   }
 144
 145   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set) {
 146     InsertNodeForTask(&graph_, new_task_set_finished_tasks[task_set].get(),
 147                       kTaskSetFinishedTaskPriorityBase + task_set,
 148                       task_count[task_set]);
 149   }
 150
 151   ScheduleTasksOnOriginThread(this, &graph_);
 152   task_graph_runner_->ScheduleTasks(namespace_token_, &graph_);
 153
 154   std::copy(new_task_set_finished_tasks,
 155             new_task_set_finished_tasks + kNumberOfTaskSets,
 156             task_set_finished_tasks_);
 157
 158   TRACE_EVENT_ASYNC_STEP_INTO1("cc", "ScheduledTasks", this, "running", "state",
 159                                StateAsValue());
 160 }
 161
 162 void ZeroCopyTileTaskWorkerPool::CheckForCompletedTasks() {
 163   TRACE_EVENT0("cc", "ZeroCopyTileTaskWorkerPool::CheckForCompletedTasks");
 164
 165   task_graph_runner_->CollectCompletedTasks(namespace_token_,
 166                                             &completed_tasks_);
 167   for (Task::Vector::const_iterator it = completed_tasks_.begin();
 168        it != completed_tasks_.end(); ++it) {
 169     TileTask* task = static_cast<TileTask*>(it->get());
 170
 171     task->WillComplete();
 172     task->CompleteOnOriginThread(this);
 173     task->DidComplete();
 174
 175     task->RunReplyOnOriginThread();
 176   }
 177   completed_tasks_.clear();
 178 }
 179
 180 ResourceFormat ZeroCopyTileTaskWorkerPool::GetResourceFormat() const {
 181   return resource_provider_->best_texture_format();
 182 }
 183
 184 bool ZeroCopyTileTaskWorkerPool::GetResourceRequiresSwizzle() const {
 185   return !PlatformColor::SameComponentOrder(GetResourceFormat());
 186 }
 187
 188 scoped_ptr<RasterBuffer> ZeroCopyTileTaskWorkerPool::AcquireBufferForRaster(
 189     const Resource* resource,
 190     uint64_t resource_content_id,
 191     uint64_t previous_content_id) {
 192   return make_scoped_ptr<RasterBuffer>(
 193       new RasterBufferImpl(resource_provider_, resource));
 194 }
 195
 196 void ZeroCopyTileTaskWorkerPool::ReleaseBufferForRaster(
 197     scoped_ptr<RasterBuffer> buffer) {
 198   // Nothing to do here. RasterBufferImpl destructor cleans up after itself.
 199 }
 200
 201 void ZeroCopyTileTaskWorkerPool::OnTaskSetFinished(TaskSet task_set) {
 202   TRACE_EVENT1("cc", "ZeroCopyTileTaskWorkerPool::OnTaskSetFinished",
 203                "task_set", task_set);
 204
 205   DCHECK(tasks_pending_[task_set]);
 206   tasks_pending_[task_set] = false;
 207   if (tasks_pending_.any()) {
 208     TRACE_EVENT_ASYNC_STEP_INTO1("cc", "ScheduledTasks", this, "running",
 209                                  "state", StateAsValue());
 210   } else {
 211     TRACE_EVENT_ASYNC_END0("cc", "ScheduledTasks", this);
 212   }
 213   client_->DidFinishRunningTileTasks(task_set);
 214 }
 215
 216 scoped_refptr<base::trace_event::ConvertableToTraceFormat>
 217 ZeroCopyTileTaskWorkerPool::StateAsValue() const {
 218   scoped_refptr<base::trace_event::TracedValue> state =
 219       new base::trace_event::TracedValue();
 220
 221   state->BeginArray("tasks_pending");
 222   for (TaskSet task_set = 0; task_set < kNumberOfTaskSets; ++task_set)
 223     state->AppendBoolean(tasks_pending_[task_set]);
 224   state->EndArray();
 225   return state;
 226 }
 227
 228 }  // namespace cc