content/renderer/media/webrtc_uma_histograms.cc

   1 // Copyright 2014 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 "content/renderer/media/webrtc_uma_histograms.h"
   6
   7 #include "base/metrics/histogram.h"
   8
   9 namespace content {
  10
  11 void UpdateWebRTCMethodCount(JavaScriptAPIName api_name) {
  12   DVLOG(3) << "Incrementing WebRTC.webkitApiCount for " << api_name;
  13   UMA_HISTOGRAM_ENUMERATION("WebRTC.webkitApiCount", api_name, INVALID_NAME);
  14   PerSessionWebRTCAPIMetrics::GetInstance()->LogUsageOnlyOnce(api_name);
  15 }
  16
  17 PerSessionWebRTCAPIMetrics::~PerSessionWebRTCAPIMetrics() {
  18 }
  19
  20 // static
  21 PerSessionWebRTCAPIMetrics* PerSessionWebRTCAPIMetrics::GetInstance() {
  22   return Singleton<PerSessionWebRTCAPIMetrics>::get();
  23 }
  24
  25 void PerSessionWebRTCAPIMetrics::IncrementStreamCounter() {
  26   DCHECK(CalledOnValidThread());
  27   ++num_streams_;
  28 }
  29
  30 void PerSessionWebRTCAPIMetrics::DecrementStreamCounter() {
  31   DCHECK(CalledOnValidThread());
  32   if (--num_streams_ == 0) {
  33     ResetUsage();
  34   }
  35 }
  36
  37 PerSessionWebRTCAPIMetrics::PerSessionWebRTCAPIMetrics() : num_streams_(0) {
  38   ResetUsage();
  39 }
  40
  41 void PerSessionWebRTCAPIMetrics::LogUsage(JavaScriptAPIName api_name) {
  42   DVLOG(3) << "Incrementing WebRTC.webkitApiCountPerSession for " << api_name;
  43   UMA_HISTOGRAM_ENUMERATION("WebRTC.webkitApiCountPerSession",
  44                             api_name, INVALID_NAME);
  45 }
  46
  47 void PerSessionWebRTCAPIMetrics::LogUsageOnlyOnce(JavaScriptAPIName api_name) {
  48   DCHECK(CalledOnValidThread());
  49   if (!has_used_api_[api_name]) {
  50     has_used_api_[api_name] = true;
  51     LogUsage(api_name);
  52   }
  53 }
  54
  55 void PerSessionWebRTCAPIMetrics::ResetUsage() {
  56   for (size_t i = 0; i < arraysize(has_used_api_); ++i)
  57     has_used_api_[i] = false;
  58 }
  59
  60 }  // namespace content