cc/tiles/tile_task_manager.cc

   1 // Copyright 2016 The Chromium Authors
   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/tiles/tile_task_manager.h"
   6
   7 #include "base/memory/ptr_util.h"
   8 #include "base/threading/thread_restrictions.h"
   9 #include "base/trace_event/trace_event.h"
  10
  11 namespace cc {
  12
  13 TileTaskManager::TileTaskManager() = default;
  14
  15 TileTaskManager::~TileTaskManager() = default;
  16
  17 // static
  18 std::unique_ptr<TileTaskManagerImpl> TileTaskManagerImpl::Create(
  19     TaskGraphRunner* task_graph_runner) {
  20   return base::WrapUnique<TileTaskManagerImpl>(
  21       new TileTaskManagerImpl(task_graph_runner));
  22 }
  23
  24 TileTaskManagerImpl::TileTaskManagerImpl(TaskGraphRunner* task_graph_runner)
  25     : task_graph_runner_(task_graph_runner),
  26       namespace_token_(task_graph_runner->GenerateNamespaceToken()) {}
  27
  28 TileTaskManagerImpl::~TileTaskManagerImpl() = default;
  29
  30 void TileTaskManagerImpl::ScheduleTasks(TaskGraph* graph) {
  31   TRACE_EVENT0("cc", "TileTaskManagerImpl::ScheduleTasks");
  32   task_graph_runner_->ScheduleTasks(namespace_token_, graph);
  33 }
  34
  35 void TileTaskManagerImpl::CheckForCompletedTasks() {
  36   TRACE_EVENT0("cc", "TileTaskManagerImpl::CheckForCompletedTasks");
  37   Task::Vector completed_tasks;
  38   task_graph_runner_->CollectCompletedTasks(namespace_token_, &completed_tasks);
  39
  40   for (auto& task : completed_tasks) {
  41     DCHECK(task->state().IsFinished() || task->state().IsCanceled());
  42     TileTask* tile_task = static_cast<TileTask*>(task.get());
  43     tile_task->OnTaskCompleted();
  44     tile_task->DidComplete();
  45   }
  46 }
  47
  48 void TileTaskManagerImpl::Shutdown() {
  49   TRACE_EVENT0("cc", "TileTaskManagerImpl::Shutdown");
  50
  51   // Cancel non-scheduled tasks and wait for running tasks to finish.
  52   TaskGraph empty;
  53   task_graph_runner_->ScheduleTasks(namespace_token_, &empty);
  54   {
  55     base::ScopedAllowBaseSyncPrimitivesOutsideBlockingScope allow_wait;
  56     task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
  57   }
  58 }
  59
  60 }  // namespace cc