cc: add DevTools instrumentation for impl-side frames

cc/trees/layer_tree_host.cc

 // Copyright 2011 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 "cc/trees/layer_tree_host.h"
 
 #include <algorithm>
 #include <stack>
 #include <string>
 
+#include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
-#include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
-#include "base/synchronization/lock.h"
 #include "cc/animation/animation_registrar.h"
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/base/math_util.h"
 #include "cc/debug/devtools_instrumentation.h"
 #include "cc/debug/overdraw_metrics.h"
 #include "cc/debug/rendering_stats_instrumentation.h"
 #include "cc/input/top_controls_manager.h"
 #include "cc/layers/heads_up_display_layer.h"
 #include "cc/layers/heads_up_display_layer_impl.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_iterator.h"
 #include "cc/layers/painted_scrollbar_layer.h"
 #include "cc/layers/render_surface.h"
 #include "cc/resources/prioritized_resource_manager.h"
 #include "cc/resources/ui_resource_client.h"
 #include "cc/trees/layer_tree_host_client.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "cc/trees/layer_tree_host_impl.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "cc/trees/occlusion_tracker.h"
 #include "cc/trees/single_thread_proxy.h"
 #include "cc/trees/thread_proxy.h"
 #include "cc/trees/tree_synchronizer.h"
 #include "ui/gfx/size_conversions.h"
 
 namespace {
-static base::LazyInstance<base::Lock>::Leaky
-    s_next_tree_id_lock = LAZY_INSTANCE_INITIALIZER;
-
-inline int GetNextTreeId() {
-  static int s_next_tree_id = 1;
-  base::AutoLock lock(s_next_tree_id_lock.Get());
-  return s_next_tree_id++;
-}
+static base::StaticAtomicSequenceNumber s_layer_tree_host_sequence_number;

[dshwang, 2013/11/07 10:28:51]

oh, great! thx.

 }
 
 namespace cc {
 
 RendererCapabilities::RendererCapabilities()
     : best_texture_format(RGBA_8888),
       using_partial_swap(false),
       using_set_visibility(false),
       using_egl_image(false),
       allow_partial_texture_updates(false),
@@ skipping 82 matching lines @@
       visible_(true),
       page_scale_factor_(1.f),
       min_page_scale_factor_(1.f),
       max_page_scale_factor_(1.f),
       trigger_idle_updates_(true),
       background_color_(SK_ColorWHITE),
       has_transparent_background_(false),
       partial_texture_update_requests_(0),
       in_paint_layer_contents_(false),
       total_frames_used_for_lcd_text_metrics_(0),
-      tree_id_(GetNextTreeId()),
+      id_(s_layer_tree_host_sequence_number.GetNext() + 1),
       next_commit_forces_redraw_(false),
       shared_bitmap_manager_(manager) {
   if (settings_.accelerated_animation_enabled)
     animation_registrar_ = AnimationRegistrar::Create();
   rendering_stats_instrumentation_->set_record_rendering_stats(
       debug_state_.RecordRenderingStats());
 }
 
 bool LayerTreeHost::InitializeThreaded(
     scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner) {
@@ skipping 278 matching lines @@
   if (new_impl_tree_has_no_evicted_resources) {
     if (sync_tree->ContentsTexturesPurged())
       sync_tree->ResetContentsTexturesPurged();
   }
 
   if (!settings_.impl_side_painting) {
     // If we're not in impl-side painting, the tree is immediately
     // considered active.
     sync_tree->DidBecomeActive();
   }
+  devtools_instrumentation::didCommitMainThreadFrame(id_, source_frame_number_);
 
   source_frame_number_++;
 }
 
 void LayerTreeHost::WillCommit() {
   client_->WillCommit();
 }
 
 void LayerTreeHost::UpdateHudLayer() {
   if (debug_state_.ShowHudInfo()) {
@@ skipping 821 matching lines @@
 
 bool LayerTreeHost::ScheduleMicroBenchmark(
     const std::string& benchmark_name,
     scoped_ptr<base::Value> value,
     const MicroBenchmark::DoneCallback& callback) {
   return micro_benchmark_controller_.ScheduleRun(
       benchmark_name, value.Pass(), callback);
 }
 
 }  // namespace cc