1 // Copyright 2014 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/mac/mac_startup_profiler.h" 6 7 #include "base/logging.h" 8 #include "base/metrics/histogram.h" 9 #include "components/startup_metric_utils/startup_metric_utils.h" 10 11 // static GetInstance()12MacStartupProfiler* MacStartupProfiler::GetInstance() { 13 return Singleton<MacStartupProfiler>::get(); 14 } 15 MacStartupProfiler()16MacStartupProfiler::MacStartupProfiler() : recorded_metrics_(false) { 17 } 18 ~MacStartupProfiler()19MacStartupProfiler::~MacStartupProfiler() { 20 } 21 Profile(Location location)22void MacStartupProfiler::Profile(Location location) { 23 profiled_times_[location] = base::Time::Now(); 24 } 25 RecordMetrics()26void MacStartupProfiler::RecordMetrics() { 27 const base::Time* main_entry_time = 28 startup_metric_utils::MainEntryPointTime(); 29 DCHECK(main_entry_time); 30 DCHECK(!recorded_metrics_); 31 32 recorded_metrics_ = true; 33 34 for (std::map<Location, base::Time>::const_iterator it = 35 profiled_times_.begin(); 36 it != profiled_times_.end(); 37 ++it) { 38 const base::Time& location_time = it->second; 39 base::TimeDelta delta = location_time - *main_entry_time; 40 RecordHistogram(it->first, delta); 41 } 42 } 43 HistogramName(Location location)44const std::string MacStartupProfiler::HistogramName(Location location) { 45 std::string prefix("Startup.OSX."); 46 switch (location) { 47 case PRE_MAIN_MESSAGE_LOOP_START: 48 return prefix + "PreMainMessageLoopStart"; 49 case AWAKE_FROM_NIB: 50 return prefix + "AwakeFromNib"; 51 case POST_MAIN_MESSAGE_LOOP_START: 52 return prefix + "PostMainMessageLoopStart"; 53 case PRE_PROFILE_INIT: 54 return prefix + "PreProfileInit"; 55 case POST_PROFILE_INIT: 56 return prefix + "PostProfileInit"; 57 case WILL_FINISH_LAUNCHING: 58 return prefix + "WillFinishLaunching"; 59 case DID_FINISH_LAUNCHING: 60 return prefix + "DockIconWillFinishBouncing"; 61 } 62 } 63 RecordHistogram(Location location,const base::TimeDelta & delta)64void MacStartupProfiler::RecordHistogram(Location location, 65 const base::TimeDelta& delta) { 66 const std::string name(HistogramName(location)); 67 base::TimeDelta min = base::TimeDelta::FromMilliseconds(10); 68 base::TimeDelta max = base::TimeDelta::FromMinutes(1); 69 int bucket_count = 100; 70 71 // No need to cache the histogram pointers, since each invocation of this 72 // method will be the first and only usage of a histogram with that given 73 // name. 74 base::HistogramBase* histogram = base::Histogram::FactoryTimeGet( 75 name, 76 min, 77 max, 78 bucket_count, 79 base::HistogramBase::kUmaTargetedHistogramFlag); 80 histogram->AddTime(delta); 81 } 82