chrome/browser/metrics/drive_metrics_provider.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/metrics/drive_metrics_provider.h"
   6
   7 #include "base/base_paths.h"
   8 #include "base/bind.h"
   9 #include "base/files/file_path.h"
  10 #include "base/location.h"
  11 #include "base/logging.h"
  12 #include "base/metrics/histogram_macros.h"
  13 #include "base/path_service.h"
  14 #include "base/time/time.h"
  15 #include "chrome/common/chrome_paths.h"
  16 #include "content/public/browser/browser_thread.h"
  17
  18 DriveMetricsProvider::DriveMetricsProvider() : weak_ptr_factory_(this) {}
  19
  20 DriveMetricsProvider::~DriveMetricsProvider() {}
  21
  22 void DriveMetricsProvider::ProvideSystemProfileMetrics(
  23     metrics::SystemProfileProto* system_profile_proto) {
  24   auto* hardware = system_profile_proto->mutable_hardware();
  25   FillDriveMetrics(metrics_.app_drive, hardware->mutable_app_drive());
  26   FillDriveMetrics(metrics_.user_data_drive,
  27                    hardware->mutable_user_data_drive());
  28 }
  29
  30 void DriveMetricsProvider::GetDriveMetrics(const base::Closure& done) {
  31   got_metrics_callback_ = done;
  32
  33   content::BrowserThread::PostTaskAndReplyWithResult(
  34       content::BrowserThread::FILE, FROM_HERE,
  35       base::Bind(&DriveMetricsProvider::GetDriveMetricsOnFileThread),
  36       base::Bind(&DriveMetricsProvider::GotDriveMetrics,
  37                  weak_ptr_factory_.GetWeakPtr()));
  38 }
  39
  40 DriveMetricsProvider::SeekPenaltyResponse::SeekPenaltyResponse()
  41     : success(false) {}
  42
  43 // static
  44 DriveMetricsProvider::DriveMetrics
  45 DriveMetricsProvider::GetDriveMetricsOnFileThread() {
  46   DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
  47
  48   DriveMetricsProvider::DriveMetrics metrics;
  49   QuerySeekPenalty(base::FILE_EXE, &metrics.app_drive);
  50   QuerySeekPenalty(chrome::FILE_LOCAL_STATE, &metrics.user_data_drive);
  51   return metrics;
  52 }
  53
  54 // static
  55 void DriveMetricsProvider::QuerySeekPenalty(
  56     int path_service_key,
  57     DriveMetricsProvider::SeekPenaltyResponse* response) {
  58   DCHECK(response);
  59
  60   base::FilePath path;
  61   if (!PathService::Get(path_service_key, &path))
  62     return;
  63
  64   base::TimeTicks start = base::TimeTicks::Now();
  65
  66   response->success = HasSeekPenalty(path, &response->has_seek_penalty);
  67
  68   UMA_HISTOGRAM_TIMES("Hardware.Drive.HasSeekPenalty_Time",
  69                       base::TimeTicks::Now() - start);
  70   UMA_HISTOGRAM_BOOLEAN("Hardware.Drive.HasSeekPenalty_Success",
  71                         response->success);
  72   if (response->success) {
  73     UMA_HISTOGRAM_BOOLEAN("Hardware.Drive.HasSeekPenalty",
  74                           response->has_seek_penalty);
  75   }
  76 }
  77
  78 void DriveMetricsProvider::GotDriveMetrics(
  79     const DriveMetricsProvider::DriveMetrics& metrics) {
  80   DCHECK(thread_checker_.CalledOnValidThread());
  81   metrics_ = metrics;
  82   got_metrics_callback_.Run();
  83 }
  84
  85 void DriveMetricsProvider::FillDriveMetrics(
  86     const DriveMetricsProvider::SeekPenaltyResponse& response,
  87     metrics::SystemProfileProto::Hardware::Drive* drive) {
  88   if (response.success)
  89     drive->set_has_seek_penalty(response.has_seek_penalty);
  90 }