mac: Add a profiler for startup time.

chrome/browser/chrome_browser_main_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chrome_browser_main_mac.h"
 
 #import <Cocoa/Cocoa.h>
 #include <sys/sysctl.h>
 
 #include "apps/app_shim/app_shim_host_manager_mac.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #import "chrome/browser/app_controller_mac.h"
 #include "chrome/browser/browser_process.h"
 #import "chrome/browser/chrome_browser_application_mac.h"
 #include "chrome/browser/mac/install_from_dmg.h"
 #import "chrome/browser/mac/keystone_glue.h"
+#include "chrome/browser/mac/mac_startup_profiler.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "components/breakpad/app/breakpad_mac.h"
 #include "components/metrics/metrics_service.h"
 #include "content/public/common/main_function_params.h"
 #include "content/public/common/result_codes.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/resource/resource_handle.h"
@@ skipping 115 matching lines @@
                             kMaxCatsAndSixtyFours);
 }
 
 }  // namespace
 
 // ChromeBrowserMainPartsMac ---------------------------------------------------
 
 ChromeBrowserMainPartsMac::ChromeBrowserMainPartsMac(
     const content::MainFunctionParams& parameters)
     : ChromeBrowserMainPartsPosix(parameters) {
+  MacStartupProfiler::GetInstance()->RecordLaunchTime();

[jeremy, 2014/07/16 08:19:23]

Is this recording something different  than
startup_metric_utils::RecordMainEntryPointTime() ?

[erikchen, 2014/07/16 22:00:33]

No. They are functionally equivalent, with the difference that this reduces the
number of files that touch mac_startup_profiler.

 }
 
 ChromeBrowserMainPartsMac::~ChromeBrowserMainPartsMac() {
 }
 
 void ChromeBrowserMainPartsMac::PreEarlyInitialization() {
   ChromeBrowserMainPartsPosix::PreEarlyInitialization();
 
   if (base::mac::WasLaunchedAsLoginItemRestoreState()) {
     CommandLine* singleton_command_line = CommandLine::ForCurrentProcess();
     singleton_command_line->AppendSwitch(switches::kRestoreLastSession);
   } else if (base::mac::WasLaunchedAsHiddenLoginItem()) {
     CommandLine* singleton_command_line = CommandLine::ForCurrentProcess();
     singleton_command_line->AppendSwitch(switches::kNoStartupWindow);
   }
 
   RecordCatSixtyFour();
 }
 
 void ChromeBrowserMainPartsMac::PreMainMessageLoopStart() {
+  MacStartupProfiler::GetInstance()->Profile(
+      MacStartupProfiler::PRE_MAIN_MESSAGE_LOOP_START);
   ChromeBrowserMainPartsPosix::PreMainMessageLoopStart();
 
   // Tell Cocoa to finish its initialization, which we want to do manually
   // instead of calling NSApplicationMain(). The primary reason is that NSAM()
   // never returns, which would leave all the objects currently on the stack
   // in scoped_ptrs hanging and never cleaned up. We then load the main nib
   // directly. The main event loop is run from common code using the
   // MessageLoop API, which works out ok for us because it's a wrapper around
   // CFRunLoop.
 
@@ skipping 62 matching lines @@
       @"NSTreatUnknownArgumentsAsOpen": @"NO",
       // CoreAnimation has poor performance and CoreAnimation and
       // non-CoreAnimation exhibit window flickering when layers are not hosted
       // in the window server, which is the default when not not using the
       // 10.9 SDK.
       // TODO: Remove this when we build with the 10.9 SDK.
       @"NSWindowHostsLayersInWindowServer": @(base::mac::IsOSMavericksOrLater())
   }];
 }
 
+void ChromeBrowserMainPartsMac::PostMainMessageLoopStart() {
+  MacStartupProfiler::GetInstance()->Profile(
+      MacStartupProfiler::POST_MAIN_MESSAGE_LOOP_START);
+}
+
 void ChromeBrowserMainPartsMac::PreProfileInit() {
+  MacStartupProfiler::GetInstance()->Profile(
+      MacStartupProfiler::PRE_PROFILE_INIT);
   ChromeBrowserMainPartsPosix::PreProfileInit();
   // This is called here so that the app shim socket is only created after
   // taking the singleton lock.
   g_browser_process->platform_part()->app_shim_host_manager()->Init();
   AppListService::InitAll(NULL);
 }
 
 void ChromeBrowserMainPartsMac::PostProfileInit() {
+  MacStartupProfiler::GetInstance()->Profile(
+      MacStartupProfiler::POST_PROFILE_INIT);
   ChromeBrowserMainPartsPosix::PostProfileInit();
   g_browser_process->metrics_service()->RecordBreakpadRegistration(
       breakpad::IsCrashReporterEnabled());
 }
 
 void ChromeBrowserMainPartsMac::DidEndMainMessageLoop() {
   AppController* appController = [NSApp delegate];
   [appController didEndMainMessageLoop];
 }