src/chrome/browser/metrics/profiler_metrics_provider.cc

   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/metrics/profiler_metrics_provider.h"
   6
   7 #include <ctype.h>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/tracked_objects.h"
  12 #include "components/metrics/metrics_log.h"
  13 #include "components/nacl/common/nacl_process_type.h"
  14 #include "content/public/common/process_type.h"
  15
  16 using metrics::ProfilerEventProto;
  17 using tracked_objects::ProcessDataSnapshot;
  18
  19 namespace {
  20
  21 ProfilerEventProto::TrackedObject::ProcessType AsProtobufProcessType(
  22     int process_type) {
  23   switch (process_type) {
  24     case content::PROCESS_TYPE_BROWSER:
  25       return ProfilerEventProto::TrackedObject::BROWSER;
  26     case content::PROCESS_TYPE_RENDERER:
  27       return ProfilerEventProto::TrackedObject::RENDERER;
  28     case content::PROCESS_TYPE_PLUGIN:
  29       return ProfilerEventProto::TrackedObject::PLUGIN;
  30     case content::PROCESS_TYPE_UTILITY:
  31       return ProfilerEventProto::TrackedObject::UTILITY;
  32     case content::PROCESS_TYPE_ZYGOTE:
  33       return ProfilerEventProto::TrackedObject::ZYGOTE;
  34     case content::PROCESS_TYPE_SANDBOX_HELPER:
  35       return ProfilerEventProto::TrackedObject::SANDBOX_HELPER;
  36     case content::PROCESS_TYPE_GPU:
  37       return ProfilerEventProto::TrackedObject::GPU;
  38     case content::PROCESS_TYPE_PPAPI_PLUGIN:
  39       return ProfilerEventProto::TrackedObject::PPAPI_PLUGIN;
  40     case content::PROCESS_TYPE_PPAPI_BROKER:
  41       return ProfilerEventProto::TrackedObject::PPAPI_BROKER;
  42     case PROCESS_TYPE_NACL_LOADER:
  43       return ProfilerEventProto::TrackedObject::NACL_LOADER;
  44     case PROCESS_TYPE_NACL_BROKER:
  45       return ProfilerEventProto::TrackedObject::NACL_BROKER;
  46     default:
  47       NOTREACHED();
  48       return ProfilerEventProto::TrackedObject::UNKNOWN;
  49   }
  50 }
  51
  52 // Maps a thread name by replacing trailing sequence of digits with "*".
  53 // Examples:
  54 // 1. "BrowserBlockingWorker1/23857" => "BrowserBlockingWorker1/*"
  55 // 2. "Chrome_IOThread" => "Chrome_IOThread"
  56 std::string MapThreadName(const std::string& thread_name) {
  57   size_t i = thread_name.length();
  58
  59   while (i > 0 && isdigit(thread_name[i - 1])) {
  60     --i;
  61   }
  62
  63   if (i == thread_name.length())
  64     return thread_name;
  65
  66   return thread_name.substr(0, i) + '*';
  67 }
  68
  69 // Normalizes a source filename (which is platform- and build-method-dependent)
  70 // by extracting the last component of the full file name.
  71 // Example: "c:\b\build\slave\win\build\src\chrome\app\chrome_main.cc" =>
  72 // "chrome_main.cc".
  73 std::string NormalizeFileName(const std::string& file_name) {
  74   const size_t offset = file_name.find_last_of("\\/");
  75   return offset != std::string::npos ? file_name.substr(offset + 1) : file_name;
  76 }
  77
  78 void WriteProfilerData(const ProcessDataSnapshot& profiler_data,
  79                        int process_type,
  80                        ProfilerEventProto* performance_profile) {
  81   for (std::vector<tracked_objects::TaskSnapshot>::const_iterator it =
  82            profiler_data.tasks.begin();
  83        it != profiler_data.tasks.end();
  84        ++it) {
  85     const tracked_objects::DeathDataSnapshot& death_data = it->death_data;
  86     ProfilerEventProto::TrackedObject* tracked_object =
  87         performance_profile->add_tracked_object();
  88     tracked_object->set_birth_thread_name_hash(
  89         MetricsLog::Hash(MapThreadName(it->birth.thread_name)));
  90     tracked_object->set_exec_thread_name_hash(
  91         MetricsLog::Hash(MapThreadName(it->death_thread_name)));
  92     tracked_object->set_source_file_name_hash(
  93         MetricsLog::Hash(NormalizeFileName(it->birth.location.file_name)));
  94     tracked_object->set_source_function_name_hash(
  95         MetricsLog::Hash(it->birth.location.function_name));
  96     tracked_object->set_source_line_number(it->birth.location.line_number);
  97     tracked_object->set_exec_count(death_data.count);
  98     tracked_object->set_exec_time_total(death_data.run_duration_sum);
  99     tracked_object->set_exec_time_sampled(death_data.run_duration_sample);
 100     tracked_object->set_queue_time_total(death_data.queue_duration_sum);
 101     tracked_object->set_queue_time_sampled(death_data.queue_duration_sample);
 102     tracked_object->set_process_type(AsProtobufProcessType(process_type));
 103     tracked_object->set_process_id(profiler_data.process_id);
 104   }
 105 }
 106
 107 }  // namespace
 108
 109 ProfilerMetricsProvider::ProfilerMetricsProvider() : has_profiler_data_(false) {
 110 }
 111
 112 ProfilerMetricsProvider::~ProfilerMetricsProvider() {
 113 }
 114
 115 void ProfilerMetricsProvider::ProvideGeneralMetrics(
 116     metrics::ChromeUserMetricsExtension* uma_proto) {
 117   if (!has_profiler_data_)
 118     return;
 119
 120   DCHECK_EQ(tracked_objects::TIME_SOURCE_TYPE_WALL_TIME,
 121             tracked_objects::GetTimeSourceType());
 122
 123   DCHECK_EQ(0, uma_proto->profiler_event_size());
 124   ProfilerEventProto* profile = uma_proto->add_profiler_event();
 125   profile->Swap(&profiler_event_cache_);
 126   has_profiler_data_ = false;
 127 }
 128
 129 void ProfilerMetricsProvider::RecordProfilerData(
 130     const tracked_objects::ProcessDataSnapshot& process_data,
 131     int process_type) {
 132   if (tracked_objects::GetTimeSourceType() !=
 133       tracked_objects::TIME_SOURCE_TYPE_WALL_TIME) {
 134     // We currently only support the default time source, wall clock time.
 135     return;
 136   }
 137
 138   has_profiler_data_ = true;
 139   profiler_event_cache_.set_profile_type(ProfilerEventProto::STARTUP_PROFILE);
 140   profiler_event_cache_.set_time_source(ProfilerEventProto::WALL_CLOCK_TIME);
 141   WriteProfilerData(process_data, process_type, &profiler_event_cache_);
 142 }