src/components/metrics/profiler/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 "components/metrics/profiler/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 "components/variations/variations_associated_data.h"
  15 #include "content/public/common/process_type.h"
  16
  17 using tracked_objects::ProcessDataSnapshot;
  18
  19 namespace metrics {
  20
  21 namespace {
  22
  23 ProfilerEventProto::TrackedObject::ProcessType AsProtobufProcessType(
  24     int process_type) {
  25   switch (process_type) {
  26     case content::PROCESS_TYPE_BROWSER:
  27       return ProfilerEventProto::TrackedObject::BROWSER;
  28     case content::PROCESS_TYPE_RENDERER:
  29       return ProfilerEventProto::TrackedObject::RENDERER;
  30     case content::PROCESS_TYPE_PLUGIN:
  31       return ProfilerEventProto::TrackedObject::PLUGIN;
  32     case content::PROCESS_TYPE_UTILITY:
  33       return ProfilerEventProto::TrackedObject::UTILITY;
  34     case content::PROCESS_TYPE_ZYGOTE:
  35       return ProfilerEventProto::TrackedObject::ZYGOTE;
  36     case content::PROCESS_TYPE_SANDBOX_HELPER:
  37       return ProfilerEventProto::TrackedObject::SANDBOX_HELPER;
  38     case content::PROCESS_TYPE_GPU:
  39       return ProfilerEventProto::TrackedObject::GPU;
  40     case content::PROCESS_TYPE_PPAPI_PLUGIN:
  41       return ProfilerEventProto::TrackedObject::PPAPI_PLUGIN;
  42     case content::PROCESS_TYPE_PPAPI_BROKER:
  43       return ProfilerEventProto::TrackedObject::PPAPI_BROKER;
  44     case PROCESS_TYPE_NACL_LOADER:
  45       return ProfilerEventProto::TrackedObject::NACL_LOADER;
  46     case PROCESS_TYPE_NACL_BROKER:
  47       return ProfilerEventProto::TrackedObject::NACL_BROKER;
  48     default:
  49       NOTREACHED();
  50       return ProfilerEventProto::TrackedObject::UNKNOWN;
  51   }
  52 }
  53
  54 // Maps a thread name by replacing trailing sequence of digits with "*".
  55 // Examples:
  56 // 1. "BrowserBlockingWorker1/23857" => "BrowserBlockingWorker1/*"
  57 // 2. "Chrome_IOThread" => "Chrome_IOThread"
  58 std::string MapThreadName(const std::string& thread_name) {
  59   size_t i = thread_name.length();
  60
  61   while (i > 0 && isdigit(thread_name[i - 1])) {
  62     --i;
  63   }
  64
  65   if (i == thread_name.length())
  66     return thread_name;
  67
  68   return thread_name.substr(0, i) + '*';
  69 }
  70
  71 // Normalizes a source filename (which is platform- and build-method-dependent)
  72 // by extracting the last component of the full file name.
  73 // Example: "c:\b\build\slave\win\build\src\chrome\app\chrome_main.cc" =>
  74 // "chrome_main.cc".
  75 std::string NormalizeFileName(const std::string& file_name) {
  76   const size_t offset = file_name.find_last_of("\\/");
  77   return offset != std::string::npos ? file_name.substr(offset + 1) : file_name;
  78 }
  79
  80 void WriteProfilerData(const ProcessDataSnapshot& profiler_data,
  81                        int process_type,
  82                        ProfilerEventProto* performance_profile) {
  83   for (std::vector<tracked_objects::TaskSnapshot>::const_iterator it =
  84            profiler_data.tasks.begin();
  85        it != profiler_data.tasks.end();
  86        ++it) {
  87     const tracked_objects::DeathDataSnapshot& death_data = it->death_data;
  88     ProfilerEventProto::TrackedObject* tracked_object =
  89         performance_profile->add_tracked_object();
  90     tracked_object->set_birth_thread_name_hash(
  91         MetricsLog::Hash(MapThreadName(it->birth.thread_name)));
  92     tracked_object->set_exec_thread_name_hash(
  93         MetricsLog::Hash(MapThreadName(it->death_thread_name)));
  94     tracked_object->set_source_file_name_hash(
  95         MetricsLog::Hash(NormalizeFileName(
  96             it->birth.location.file_name)));
  97     tracked_object->set_source_function_name_hash(
  98         MetricsLog::Hash(it->birth.location.function_name));
  99     tracked_object->set_source_line_number(it->birth.location.line_number);
 100     tracked_object->set_exec_count(death_data.count);
 101     tracked_object->set_exec_time_total(death_data.run_duration_sum);
 102     tracked_object->set_exec_time_sampled(death_data.run_duration_sample);
 103     tracked_object->set_queue_time_total(death_data.queue_duration_sum);
 104     tracked_object->set_queue_time_sampled(death_data.queue_duration_sample);
 105     tracked_object->set_process_type(AsProtobufProcessType(process_type));
 106     tracked_object->set_process_id(profiler_data.process_id);
 107   }
 108 }
 109
 110 bool SkipProfilerDataUpload() {
 111   // If skip_profiler_data is set in experiment params then skip the uplaod.
 112   std::string skip_profiler_data = variations::GetVariationParamValue(
 113       "UMALogUploadInterval", "skip_profiler_data");
 114   return skip_profiler_data == "true";
 115 }
 116
 117 }  // namespace
 118
 119 ProfilerMetricsProvider::ProfilerMetricsProvider() : has_profiler_data_(false) {
 120 }
 121
 122 ProfilerMetricsProvider::~ProfilerMetricsProvider() {
 123 }
 124
 125 void ProfilerMetricsProvider::ProvideGeneralMetrics(
 126     ChromeUserMetricsExtension* uma_proto) {
 127   if (!has_profiler_data_)
 128     return;
 129
 130   DCHECK_EQ(tracked_objects::TIME_SOURCE_TYPE_WALL_TIME,
 131             tracked_objects::GetTimeSourceType());
 132
 133   DCHECK_EQ(0, uma_proto->profiler_event_size());
 134   ProfilerEventProto* profile = uma_proto->add_profiler_event();
 135   profile->Swap(&profiler_event_cache_);
 136   has_profiler_data_ = false;
 137 }
 138
 139 void ProfilerMetricsProvider::RecordProfilerData(
 140     const tracked_objects::ProcessDataSnapshot& process_data,
 141     int process_type) {
 142   if (SkipProfilerDataUpload())
 143     return;
 144
 145   if (tracked_objects::GetTimeSourceType() !=
 146       tracked_objects::TIME_SOURCE_TYPE_WALL_TIME) {
 147     // We currently only support the default time source, wall clock time.
 148     return;
 149   }
 150
 151   has_profiler_data_ = true;
 152   profiler_event_cache_.set_profile_type(ProfilerEventProto::STARTUP_PROFILE);
 153   profiler_event_cache_.set_time_source(ProfilerEventProto::WALL_CLOCK_TIME);
 154   WriteProfilerData(process_data, process_type, &profiler_event_cache_);
 155 }
 156
 157 }  // namespace metrics