chrome/browser/ui/app_list/app_list_service.cc

   1 // Copyright 2013 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/ui/app_list/app_list_service.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/metrics/histogram.h"
   9 #include "base/prefs/pref_registry_simple.h"
  10 #include "base/process/process_info.h"
  11 #include "base/strings/string_number_conversions.h"
  12 #include "base/time/time.h"
  13 #include "chrome/common/chrome_switches.h"
  14 #include "chrome/common/pref_names.h"
  15
  16 namespace {
  17
  18 enum StartupType {
  19   COLD_START,
  20   WARM_START,
  21   WARM_START_FAST,
  22 };
  23
  24 base::Time GetOriginalProcessStartTime(const CommandLine& command_line) {
  25   if (command_line.HasSwitch(switches::kOriginalProcessStartTime)) {
  26     std::string start_time_string =
  27         command_line.GetSwitchValueASCII(switches::kOriginalProcessStartTime);
  28     int64 remote_start_time;
  29     base::StringToInt64(start_time_string, &remote_start_time);
  30     return base::Time::FromInternalValue(remote_start_time);
  31   }
  32
  33 // base::CurrentProcessInfo::CreationTime() is only defined on some
  34 // platforms.
  35 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_LINUX)
  36   return base::CurrentProcessInfo::CreationTime();
  37 #endif
  38   return base::Time();
  39 }
  40
  41 StartupType GetStartupType(const CommandLine& command_line) {
  42   // The presence of kOriginalProcessStartTime implies that another process
  43   // has sent us its command line to handle, ie: we are already running.
  44   if (command_line.HasSwitch(switches::kOriginalProcessStartTime)) {
  45     return command_line.HasSwitch(switches::kFastStart) ?
  46         WARM_START_FAST : WARM_START;
  47   }
  48   return COLD_START;
  49 }
  50
  51 // The time the process that caused the app list to be shown started. This isn't
  52 // necessarily the currently executing process as we may be processing a command
  53 // line given to a short-lived Chrome instance.
  54 int64 g_original_process_start_time;
  55
  56 // The type of startup the the current app list show has gone through.
  57 StartupType g_app_show_startup_type;
  58
  59 void RecordStartupInfo(StartupType startup_type, const base::Time& start_time) {
  60   g_original_process_start_time = start_time.ToInternalValue();
  61   g_app_show_startup_type = startup_type;
  62 }
  63
  64 void RecordFirstPaintTiming() {
  65   base::Time start_time(
  66       base::Time::FromInternalValue(g_original_process_start_time));
  67   base::TimeDelta elapsed = base::Time::Now() - start_time;
  68   switch (g_app_show_startup_type) {
  69     case COLD_START:
  70       UMA_HISTOGRAM_LONG_TIMES("Startup.AppListFirstPaintColdStart", elapsed);
  71       break;
  72     case WARM_START:
  73       UMA_HISTOGRAM_LONG_TIMES("Startup.AppListFirstPaintWarmStart", elapsed);
  74       break;
  75     case WARM_START_FAST:
  76       UMA_HISTOGRAM_LONG_TIMES("Startup.AppListFirstPaintWarmStartFast",
  77                                elapsed);
  78       break;
  79   }
  80 }
  81
  82 }  // namespace
  83
  84 // static
  85 void AppListService::RegisterPrefs(PrefRegistrySimple* registry) {
  86   registry->RegisterInt64Pref(prefs::kLastAppListLaunchPing, 0);
  87   registry->RegisterIntegerPref(prefs::kAppListLaunchCount, 0);
  88   registry->RegisterInt64Pref(prefs::kLastAppListAppLaunchPing, 0);
  89   registry->RegisterIntegerPref(prefs::kAppListAppLaunchCount, 0);
  90   registry->RegisterStringPref(prefs::kAppListProfile, std::string());
  91   registry->RegisterBooleanPref(prefs::kRestartWithAppList, false);
  92   registry->RegisterBooleanPref(prefs::kAppLauncherIsEnabled, false);
  93   registry->RegisterBooleanPref(prefs::kAppLauncherHasBeenEnabled, false);
  94
  95 #if defined(OS_MACOSX)
  96   registry->RegisterIntegerPref(prefs::kAppLauncherShortcutVersion, 0);
  97 #endif
  98
  99   // Identifies whether we should show the app launcher promo or not.
 100   // Note that a field trial also controls the showing, so the promo won't show
 101   // unless the pref is set AND the field trial is set to a proper group.
 102   registry->RegisterBooleanPref(prefs::kShowAppLauncherPromo, true);
 103 }
 104
 105 // static
 106 void AppListService::RecordShowTimings(const CommandLine& command_line) {
 107   base::Time start_time = GetOriginalProcessStartTime(command_line);
 108   if (start_time.is_null())
 109     return;
 110
 111   base::TimeDelta elapsed = base::Time::Now() - start_time;
 112   StartupType startup = GetStartupType(command_line);
 113   switch (startup) {
 114     case COLD_START:
 115       UMA_HISTOGRAM_LONG_TIMES("Startup.ShowAppListColdStart", elapsed);
 116       break;
 117     case WARM_START:
 118       UMA_HISTOGRAM_LONG_TIMES("Startup.ShowAppListWarmStart", elapsed);
 119       break;
 120     case WARM_START_FAST:
 121       UMA_HISTOGRAM_LONG_TIMES("Startup.ShowAppListWarmStartFast", elapsed);
 122       break;
 123   }
 124
 125   RecordStartupInfo(startup, start_time);
 126   Get(chrome::HOST_DESKTOP_TYPE_NATIVE)->SetAppListNextPaintCallback(
 127       RecordFirstPaintTiming);
 128 }