tracked.cc revision 513209b27ff55e2841eac0e4120199c23acce758 
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/stringprintf.h"
8#include "base/tracked_objects.h"
9
10using base::TimeTicks;
11
12namespace tracked_objects {
13
14//------------------------------------------------------------------------------
15
16Location::Location(const char* function_name, const char* file_name,
17                   int line_number)
18    : function_name_(function_name),
19      file_name_(file_name),
20      line_number_(line_number) {
21}
22
23Location::Location()
24    : function_name_("Unknown"),
25      file_name_("Unknown"),
26      line_number_(-1) {
27}
28
29void Location::Write(bool display_filename, bool display_function_name,
30                     std::string* output) const {
31  base::StringAppendF(output, "%s[%d] ",
32      display_filename ? file_name_ : "line",
33      line_number_);
34
35  if (display_function_name) {
36    WriteFunctionName(output);
37    output->push_back(' ');
38  }
39}
40
41void Location::WriteFunctionName(std::string* output) const {
42  // Translate "<" to "&lt;" for HTML safety.
43  // TODO(jar): Support ASCII or html for logging in ASCII.
44  for (const char *p = function_name_; *p; p++) {
45    switch (*p) {
46      case '<':
47        output->append("&lt;");
48        break;
49
50      case '>':
51        output->append("&gt;");
52        break;
53
54      default:
55        output->push_back(*p);
56        break;
57    }
58  }
59}
60
61//------------------------------------------------------------------------------
62
63#ifndef TRACK_ALL_TASK_OBJECTS
64
65Tracked::Tracked() {}
66Tracked::~Tracked() {}
67void Tracked::SetBirthPlace(const Location& from_here) {}
68const Location Tracked::GetBirthPlace() const {
69  static Location kNone("NoFunctionName", "NeedToSetBirthPlace", -1);
70  return kNone;
71}
72bool Tracked::MissingBirthplace() const { return false; }
73void Tracked::ResetBirthTime() {}
74
75#else
76
77Tracked::Tracked()
78    : tracked_births_(NULL),
79      tracked_birth_time_(TimeTicks::Now()) {
80  if (!ThreadData::IsActive())
81    return;
82  SetBirthPlace(Location("NoFunctionName", "NeedToSetBirthPlace", -1));
83}
84
85Tracked::~Tracked() {
86  if (!ThreadData::IsActive() || !tracked_births_)
87    return;
88  ThreadData::current()->TallyADeath(*tracked_births_,
89                                     TimeTicks::Now() - tracked_birth_time_);
90}
91
92void Tracked::SetBirthPlace(const Location& from_here) {
93  if (!ThreadData::IsActive())
94    return;
95  if (tracked_births_)
96    tracked_births_->ForgetBirth();
97  ThreadData* current_thread_data = ThreadData::current();
98  if (!current_thread_data)
99    return;  // Shutdown started, and this thread wasn't registered.
100  tracked_births_ = current_thread_data->TallyABirth(from_here);
101}
102
103const Location Tracked::GetBirthPlace() const {
104  return tracked_births_->location();
105}
106
107void Tracked::ResetBirthTime() {
108  tracked_birth_time_ = TimeTicks::Now();
109}
110
111bool Tracked::MissingBirthplace() const {
112  return -1 == tracked_births_->location().line_number();
113}
114
115#endif  // NDEBUG
116
117}  // namespace tracked_objects
118