chrome/browser/net/request_source_bandwidth_histograms.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 "chrome/browser/net/request_source_bandwidth_histograms.h"
   6
   7 #include "base/metrics/histogram_macros.h"
   8 #include "content/public/browser/resource_request_info.h"
   9 #include "content/public/common/process_type.h"
  10 #include "net/url_request/url_request.h"
  11
  12 namespace {
  13
  14 enum Bucket {
  15   BUCKET_UNKNOWN,
  16   BUCKET_RENDERER,
  17   BUCKET_BROWSER,
  18   BUCKET_MAX,
  19 };
  20
  21 bool ShouldHistogramRequest(const net::URLRequest* request, bool started) {
  22   return started &&
  23          !request->was_cached() &&
  24          request->url().SchemeIsHTTPOrHTTPS();
  25 }
  26
  27 Bucket GetBucketForRequest(const net::URLRequest* request) {
  28   const content::ResourceRequestInfo* info =
  29       content::ResourceRequestInfo::ForRequest(request);
  30   if (!info)
  31     return BUCKET_BROWSER;
  32   else if (info->GetProcessType() == content::PROCESS_TYPE_RENDERER)
  33     return BUCKET_RENDERER;
  34   else
  35     return BUCKET_UNKNOWN;
  36 }
  37
  38 // Histogram response sizes in kilobytes, from 1 KB to 4 GB.
  39 #define UMA_HISTOGRAM_RESPONSE_KB(bucket, sample) \
  40     UMA_HISTOGRAM_CUSTOM_COUNTS("Net.ResponseSizeByProcess." bucket, sample, \
  41                                 1, 4 * 1024 * 1024, 100)
  42
  43 void LogRequest(Bucket bucket, int64 bytes) {
  44   int64 kilobytes = bytes / 1024;
  45   switch (bucket) {
  46     case BUCKET_UNKNOWN:
  47       UMA_HISTOGRAM_RESPONSE_KB("Unknown", kilobytes);
  48       break;
  49     case BUCKET_RENDERER:
  50       UMA_HISTOGRAM_RESPONSE_KB("Renderer", kilobytes);
  51       break;
  52     case BUCKET_BROWSER:
  53       UMA_HISTOGRAM_RESPONSE_KB("Browser", kilobytes);
  54       break;
  55     default:
  56       NOTREACHED();
  57   }
  58 }
  59
  60 }  // namespace
  61
  62 void RecordRequestSourceBandwidth(const net::URLRequest* request,
  63                                   bool started) {
  64   if (ShouldHistogramRequest(request, started))
  65     LogRequest(GetBucketForRequest(request), request->GetTotalReceivedBytes());
  66 }