cc: Implement states for Task for stricter control.

cc/raster/tile_task_worker_pool_perftest.cc

 // Copyright 2013 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 <stddef.h>
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/test/test_simple_task_runner.h"
@@ skipping 118 matching lines @@
   // Overridden from Task:
   void RunOnWorkerThread() override {}
 
   // Overridden from TileTask:
   void ScheduleOnOriginThread(RasterBufferProvider* provider) override {}
   void CompleteOnOriginThread(RasterBufferProvider* provider) override {
     Reset();
   }
 
   void Reset() {
-    did_run_ = false;
+    state().Reset();
     did_complete_ = false;
   }
 
  protected:
   ~PerfImageDecodeTaskImpl() override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PerfImageDecodeTaskImpl);
 };
 
@@ skipping 10 matching lines @@
   void ScheduleOnOriginThread(RasterBufferProvider* provider) override {
     // No tile ids are given to support partial updates.
     raster_buffer_ = provider->AcquireBufferForRaster(resource_.get(), 0, 0);
   }
   void CompleteOnOriginThread(RasterBufferProvider* provider) override {
     provider->ReleaseBufferForRaster(std::move(raster_buffer_));
     Reset();
   }
 
   void Reset() {
-    did_run_ = false;
+    state().Reset();
     did_complete_ = false;
   }
 
  protected:
   ~PerfRasterTaskImpl() override {}
 
  private:
   std::unique_ptr<ScopedResource> resource_;
   std::unique_ptr<RasterBuffer> raster_buffer_;
 
@@ skipping 14 matching lines @@
                base::TimeDelta::FromMilliseconds(kTimeLimitMillis),
                kTimeCheckInterval) {}
 
   void CreateImageDecodeTasks(unsigned num_image_decode_tasks,
                               TileTask::Vector* image_decode_tasks) {
     for (unsigned i = 0; i < num_image_decode_tasks; ++i)
       image_decode_tasks->push_back(new PerfImageDecodeTaskImpl);
   }
 
   void CreateRasterTasks(unsigned num_raster_tasks,
-                         const TileTask::Vector& image_decode_tasks,
+                         unsigned num_image_decode_tasks,
                          RasterTaskVector* raster_tasks) {
     const gfx::Size size(1, 1);
 
     for (unsigned i = 0; i < num_raster_tasks; ++i) {
+      TileTask::Vector image_decode_tasks;
+      CreateImageDecodeTasks(num_image_decode_tasks, &image_decode_tasks);
       std::unique_ptr<ScopedResource> resource(
           ScopedResource::Create(resource_provider_.get()));
       resource->Allocate(size, ResourceProvider::TEXTURE_HINT_IMMUTABLE,
                          RGBA_8888);
 
-      TileTask::Vector dependencies = image_decode_tasks;
       raster_tasks->push_back(
-          new PerfRasterTaskImpl(std::move(resource), &dependencies));
+          new PerfRasterTaskImpl(std::move(resource), &image_decode_tasks));
     }
   }
 
   void BuildTileTaskGraph(TaskGraph* graph,
                           const RasterTaskVector& raster_tasks) {
     uint16_t priority = 0;
 
     for (auto& raster_task : raster_tasks) {
       priority++;
 
@@ skipping 64 matching lines @@
   }
 
   void RunMessageLoopUntilAllTasksHaveCompleted() {
     task_graph_runner_->RunUntilIdle();
     task_runner_->RunUntilIdle();
   }
 
   void RunScheduleTasksTest(const std::string& test_name,
                             unsigned num_raster_tasks,
                             unsigned num_image_decode_tasks) {
-    TileTask::Vector image_decode_tasks;
     RasterTaskVector raster_tasks;
-    CreateImageDecodeTasks(num_image_decode_tasks, &image_decode_tasks);
-    CreateRasterTasks(num_raster_tasks, image_decode_tasks, &raster_tasks);
+    CreateRasterTasks(num_raster_tasks, num_image_decode_tasks, &raster_tasks);
 
     // Avoid unnecessary heap allocations by reusing the same graph.
     TaskGraph graph;
 
     timer_.Reset();
     do {
       graph.Reset();
       BuildTileTaskGraph(&graph, raster_tasks);
       tile_task_worker_pool_->ScheduleTasks(&graph);
       tile_task_worker_pool_->CheckForCompletedTasks();
       timer_.NextLap();
     } while (!timer_.HasTimeLimitExpired());
 
     TaskGraph empty;
     tile_task_worker_pool_->ScheduleTasks(&empty);
     RunMessageLoopUntilAllTasksHaveCompleted();
 
     perf_test::PrintResult("schedule_tasks", TestModifierString(), test_name,
                            timer_.LapsPerSecond(), "runs/s", true);
   }
 
   void RunScheduleAlternateTasksTest(const std::string& test_name,
                                      unsigned num_raster_tasks,
                                      unsigned num_image_decode_tasks) {
     const size_t kNumVersions = 2;
-    TileTask::Vector image_decode_tasks[kNumVersions];
     RasterTaskVector raster_tasks[kNumVersions];
     for (size_t i = 0; i < kNumVersions; ++i) {
-      CreateImageDecodeTasks(num_image_decode_tasks, &image_decode_tasks[i]);
-      CreateRasterTasks(num_raster_tasks, image_decode_tasks[i],
+      CreateRasterTasks(num_raster_tasks, num_image_decode_tasks,
                         &raster_tasks[i]);
     }
 
     // Avoid unnecessary heap allocations by reusing the same graph.
     TaskGraph graph;
 
     size_t count = 0;
     timer_.Reset();
     do {
       graph.Reset();
       BuildTileTaskGraph(&graph, raster_tasks[count % kNumVersions]);
       tile_task_worker_pool_->ScheduleTasks(&graph);
       tile_task_worker_pool_->CheckForCompletedTasks();
       ++count;
       timer_.NextLap();
     } while (!timer_.HasTimeLimitExpired());
 
     TaskGraph empty;
     tile_task_worker_pool_->ScheduleTasks(&empty);
     RunMessageLoopUntilAllTasksHaveCompleted();
 
     perf_test::PrintResult("schedule_alternate_tasks", TestModifierString(),
                            test_name, timer_.LapsPerSecond(), "runs/s", true);
   }
 
   void RunScheduleAndExecuteTasksTest(const std::string& test_name,
                                       unsigned num_raster_tasks,
                                       unsigned num_image_decode_tasks) {
-    TileTask::Vector image_decode_tasks;
     RasterTaskVector raster_tasks;
-    CreateImageDecodeTasks(num_image_decode_tasks, &image_decode_tasks);
-    CreateRasterTasks(num_raster_tasks, image_decode_tasks, &raster_tasks);
+    CreateRasterTasks(num_raster_tasks, num_image_decode_tasks, &raster_tasks);
 
     // Avoid unnecessary heap allocations by reusing the same graph.
     TaskGraph graph;
 
     timer_.Reset();
     do {
       graph.Reset();
       BuildTileTaskGraph(&graph, raster_tasks);
       tile_task_worker_pool_->ScheduleTasks(&graph);
       RunMessageLoopUntilAllTasksHaveCompleted();
@@ skipping 85 matching lines @@
   void SetUp() override {
     output_surface_ = FakeOutputSurface::Create3d(context_provider_);
     CHECK(output_surface_->BindToClient(&output_surface_client_));
     resource_provider_ =
         FakeResourceProvider::Create(output_surface_.get(), nullptr);
   }
 
   void RunBuildTileTaskGraphTest(const std::string& test_name,
                                  unsigned num_raster_tasks,
                                  unsigned num_image_decode_tasks) {
-    TileTask::Vector image_decode_tasks;
     RasterTaskVector raster_tasks;
-    CreateImageDecodeTasks(num_image_decode_tasks, &image_decode_tasks);
-    CreateRasterTasks(num_raster_tasks, image_decode_tasks, &raster_tasks);
+    CreateRasterTasks(num_raster_tasks, num_image_decode_tasks, &raster_tasks);
 
     // Avoid unnecessary heap allocations by reusing the same graph.
     TaskGraph graph;
 
     timer_.Reset();
     do {
       graph.Reset();
       BuildTileTaskGraph(&graph, raster_tasks);
       timer_.NextLap();
     } while (!timer_.HasTimeLimitExpired());
 
     perf_test::PrintResult("build_raster_task_graph", "", test_name,
                            timer_.LapsPerSecond(), "runs/s", true);
   }
 };
 
 TEST_F(TileTaskWorkerPoolCommonPerfTest, BuildTileTaskGraph) {
   RunBuildTileTaskGraphTest("1_0", 1, 0);
   RunBuildTileTaskGraphTest("32_0", 32, 0);
   RunBuildTileTaskGraphTest("1_1", 1, 1);
   RunBuildTileTaskGraphTest("32_1", 32, 1);
   RunBuildTileTaskGraphTest("1_4", 1, 4);
   RunBuildTileTaskGraphTest("32_4", 32, 4);
 }
 
 }  // namespace
 }  // namespace cc