cc/debug/frame_timing_tracker.cc

   1 // Copyright 2015 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/debug/frame_timing_tracker.h"
   6
   7 #include <algorithm>
   8 #include <limits>
   9
  10 #include "base/metrics/histogram.h"
  11 #include "cc/trees/proxy.h"
  12
  13 namespace cc {
  14
  15 FrameTimingTracker::CompositeTimingEvent::CompositeTimingEvent(
  16     int _frame_id,
  17     base::TimeTicks _timestamp)
  18     : frame_id(_frame_id), timestamp(_timestamp) {
  19 }
  20
  21 FrameTimingTracker::CompositeTimingEvent::~CompositeTimingEvent() {
  22 }
  23
  24 // static
  25 scoped_ptr<FrameTimingTracker> FrameTimingTracker::Create() {
  26   return make_scoped_ptr(new FrameTimingTracker);
  27 }
  28
  29 FrameTimingTracker::FrameTimingTracker() {
  30 }
  31
  32 FrameTimingTracker::~FrameTimingTracker() {
  33 }
  34
  35 void FrameTimingTracker::SaveTimeStamps(
  36     base::TimeTicks timestamp,
  37     const std::vector<FrameAndRectIds>& frame_ids) {
  38   if (!composite_events_)
  39     composite_events_.reset(new CompositeTimingSet);
  40   for (const auto& pair : frame_ids)
  41     (*composite_events_)[pair.second].push_back(
  42         CompositeTimingEvent(pair.first, timestamp));
  43 }
  44
  45 scoped_ptr<FrameTimingTracker::CompositeTimingSet>
  46 FrameTimingTracker::GroupCountsByRectId() {
  47   if (!composite_events_)
  48     return make_scoped_ptr(new CompositeTimingSet);
  49   scoped_ptr<CompositeTimingSet> composite_info(new CompositeTimingSet);
  50   for (auto& infos : *composite_events_)
  51     std::sort(
  52         infos.second.begin(), infos.second.end(),
  53         [](const CompositeTimingEvent& lhs, const CompositeTimingEvent& rhs) {
  54           return lhs.timestamp < rhs.timestamp;
  55         });
  56   return composite_events_.Pass();
  57 }
  58
  59 }  // namespace cc