base/tracked.cc

   1 // Copyright (c) 2006-2008 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 "base/tracked.h"
   6
   7 #include "base/string_util.h"
   8 #include "base/tracked_objects.h"
   9
  10 using base::Time;
  11
  12 namespace tracked_objects {
  13
  14 //------------------------------------------------------------------------------
  15 void Location::Write(bool display_filename, bool display_function_name,
  16                      std::string* output) const {
  17   StringAppendF(output, "%s[%d] ",
  18       display_filename ? file_name_ : "line",
  19       line_number_);
  20
  21   if (display_function_name) {
  22     WriteFunctionName(output);
  23     output->push_back(' ');
  24   }
  25 }
  26
  27 void Location::WriteFunctionName(std::string* output) const {
  28   // Translate "<" to "&lt;" for HTML safety.
  29   // TODO(jar): Support ASCII or html for logging in ASCII.
  30   for (const char *p = function_name_; *p; p++) {
  31     switch (*p) {
  32       case '<':
  33         output->append("&lt;");
  34         break;
  35
  36       case '>':
  37         output->append("&gt;");
  38         break;
  39
  40       default:
  41         output->push_back(*p);
  42         break;
  43     }
  44   }
  45 }
  46
  47 //------------------------------------------------------------------------------
  48
  49 #ifndef TRACK_ALL_TASK_OBJECTS
  50
  51 Tracked::Tracked() {}
  52 Tracked::~Tracked() {}
  53 void Tracked::SetBirthPlace(const Location& from_here) {}
  54 bool Tracked::MissingBirthplace() const { return false; }
  55 void Tracked::ResetBirthTime() {}
  56
  57 #else
  58
  59 Tracked::Tracked() : tracked_births_(NULL), tracked_birth_time_(Time::Now()) {
  60   if (!ThreadData::IsActive())
  61     return;
  62   SetBirthPlace(Location("NoFunctionName", "NeedToSetBirthPlace", -1));
  63 }
  64
  65 Tracked::~Tracked() {
  66   if (!ThreadData::IsActive() || !tracked_births_)
  67     return;
  68   ThreadData::current()->TallyADeath(*tracked_births_,
  69                                      Time::Now() - tracked_birth_time_);
  70 }
  71
  72 void Tracked::SetBirthPlace(const Location& from_here) {
  73   if (!ThreadData::IsActive())
  74     return;
  75   if (tracked_births_)
  76     tracked_births_->ForgetBirth();
  77   ThreadData* current_thread_data = ThreadData::current();
  78   if (!current_thread_data)
  79     return;  // Shutdown started, and this thread wasn't registered.
  80   tracked_births_ = current_thread_data->TallyABirth(from_here);
  81 }
  82
  83 void Tracked::ResetBirthTime() {
  84   tracked_birth_time_ = Time::Now();
  85 }
  86
  87 bool Tracked::MissingBirthplace() const {
  88   return -1 == tracked_births_->location().line_number();
  89 }
  90
  91 #endif  // NDEBUG
  92
  93 }  // namespace tracked_objects