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/sys_info.h"
  15 #include "base/time/time.h"
  16 #include "chrome/common/chrome_paths.h"
  17 #include "content/public/browser/browser_thread.h"
  18
  19 DriveMetricsProvider::DriveMetricsProvider() : weak_ptr_factory_(this) {}
  20
  21 DriveMetricsProvider::~DriveMetricsProvider() {}
  22
  23 void DriveMetricsProvider::ProvideSystemProfileMetrics(
  24     metrics::SystemProfileProto* system_profile_proto) {
  25   auto* hardware = system_profile_proto->mutable_hardware();
  26   FillDriveMetrics(metrics_.app_drive, hardware->mutable_app_drive());
  27   FillDriveMetrics(metrics_.user_data_drive,
  28                    hardware->mutable_user_data_drive());
  29 }
  30
  31 void DriveMetricsProvider::GetDriveMetrics(const base::Closure& done) {
  32   got_metrics_callback_ = done;
  33
  34   content::BrowserThread::PostTaskAndReplyWithResult(
  35       content::BrowserThread::FILE, FROM_HERE,
  36       base::Bind(&DriveMetricsProvider::GetDriveMetricsOnFileThread),
  37       base::Bind(&DriveMetricsProvider::GotDriveMetrics,
  38                  weak_ptr_factory_.GetWeakPtr()));
  39 }
  40
  41 DriveMetricsProvider::SeekPenaltyResponse::SeekPenaltyResponse()
  42     : success(false) {}
  43
  44 // static
  45 DriveMetricsProvider::DriveMetrics
  46 DriveMetricsProvider::GetDriveMetricsOnFileThread() {
  47   DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
  48
  49   DriveMetricsProvider::DriveMetrics metrics;
  50   QuerySeekPenalty(base::FILE_EXE, &metrics.app_drive);
  51   QuerySeekPenalty(chrome::FILE_LOCAL_STATE, &metrics.user_data_drive);
  52   return metrics;
  53 }
  54
  55 // static
  56 void DriveMetricsProvider::QuerySeekPenalty(
  57     int path_service_key,
  58     DriveMetricsProvider::SeekPenaltyResponse* response) {
  59   DCHECK(response);
  60
  61   base::FilePath path;
  62   if (!PathService::Get(path_service_key, &path))
  63     return;
  64
  65   base::TimeTicks start = base::TimeTicks::Now();
  66
  67   response->success =
  68       base::SysInfo::HasSeekPenalty(path, &response->has_seek_penalty);
  69
  70   UMA_HISTOGRAM_TIMES("Hardware.Drive.HasSeekPenalty_Time",
  71                       base::TimeTicks::Now() - start);
  72   UMA_HISTOGRAM_BOOLEAN("Hardware.Drive.HasSeekPenalty_Success",
  73                         response->success);
  74   if (response->success) {
  75     UMA_HISTOGRAM_BOOLEAN("Hardware.Drive.HasSeekPenalty",
  76                           response->has_seek_penalty);
  77   }
  78 }
  79
  80 void DriveMetricsProvider::GotDriveMetrics(
  81     const DriveMetricsProvider::DriveMetrics& metrics) {
  82   DCHECK(thread_checker_.CalledOnValidThread());
  83   metrics_ = metrics;
  84   got_metrics_callback_.Run();
  85 }
  86
  87 void DriveMetricsProvider::FillDriveMetrics(
  88     const DriveMetricsProvider::SeekPenaltyResponse& response,
  89     metrics::SystemProfileProto::Hardware::Drive* drive) {
  90   if (response.success)
  91     drive->set_has_seek_penalty(response.has_seek_penalty);
  92 }