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Side by Side Diff: base/tracked.h

Issue 7461141: Rename BASE_API to BASE_EXPORT. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 //------------------------------------------------------------------------------ 5 //------------------------------------------------------------------------------
6 // Tracked is the base class for all tracked objects. During construction, it 6 // Tracked is the base class for all tracked objects. During construction, it
7 // registers the fact that an instance was created, and at destruction time, it 7 // registers the fact that an instance was created, and at destruction time, it
8 // records that event. The instance may be tagged with a name, which is refered 8 // records that event. The instance may be tagged with a name, which is refered
9 // to as its Location. The Location is a file and line number, most 9 // to as its Location. The Location is a file and line number, most
10 // typically indicated where the object was constructed. In some cases, as the 10 // typically indicated where the object was constructed. In some cases, as the
11 // object's significance is refined (for example, a Task object is augmented to 11 // object's significance is refined (for example, a Task object is augmented to
12 // do additonal things), its Location may be redefined to that later location. 12 // do additonal things), its Location may be redefined to that later location.
13 13
14 // Tracking includes (for each instance) recording the birth thread, death 14 // Tracking includes (for each instance) recording the birth thread, death
15 // thread, and duration of life (from construction to destruction). All this 15 // thread, and duration of life (from construction to destruction). All this
16 // data is accumulated and filtered for review at about:objects. 16 // data is accumulated and filtered for review at about:objects.
17 17
18 #ifndef BASE_TRACKED_H_ 18 #ifndef BASE_TRACKED_H_
19 #define BASE_TRACKED_H_ 19 #define BASE_TRACKED_H_
20 #pragma once 20 #pragma once
21 21
22 #include <string> 22 #include <string>
23 23
24 #include "base/base_api.h" 24 #include "base/base_export.h"
25 #include "base/time.h" 25 #include "base/time.h"
26 26
27 #ifndef NDEBUG 27 #ifndef NDEBUG
28 #ifndef TRACK_ALL_TASK_OBJECTS 28 #ifndef TRACK_ALL_TASK_OBJECTS
29 #define TRACK_ALL_TASK_OBJECTS 29 #define TRACK_ALL_TASK_OBJECTS
30 #endif // TRACK_ALL_TASK_OBJECTS 30 #endif // TRACK_ALL_TASK_OBJECTS
31 #endif // NDEBUG 31 #endif // NDEBUG
32 32
33 namespace tracked_objects { 33 namespace tracked_objects {
34 34
35 //------------------------------------------------------------------------------ 35 //------------------------------------------------------------------------------
36 // Location provides basic info where of an object was constructed, or was 36 // Location provides basic info where of an object was constructed, or was
37 // significantly brought to life. 37 // significantly brought to life.
38 38
39 class BASE_API Location { 39 class BASE_EXPORT Location {
40 public: 40 public:
41 // Constructor should be called with a long-lived char*, such as __FILE__. 41 // Constructor should be called with a long-lived char*, such as __FILE__.
42 // It assumes the provided value will persist as a global constant, and it 42 // It assumes the provided value will persist as a global constant, and it
43 // will not make a copy of it. 43 // will not make a copy of it.
44 Location(const char* function_name, 44 Location(const char* function_name,
45 const char* file_name, 45 const char* file_name,
46 int line_number, 46 int line_number,
47 const void* program_counter); 47 const void* program_counter);
48 48
49 // Provide a default constructor for easy of debugging. 49 // Provide a default constructor for easy of debugging.
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74 // Write function_name_ in HTML with '<' and '>' properly encoded. 74 // Write function_name_ in HTML with '<' and '>' properly encoded.
75 void WriteFunctionName(std::string* output) const; 75 void WriteFunctionName(std::string* output) const;
76 76
77 private: 77 private:
78 const char* const function_name_; 78 const char* const function_name_;
79 const char* const file_name_; 79 const char* const file_name_;
80 const int line_number_; 80 const int line_number_;
81 const void* const program_counter_; 81 const void* const program_counter_;
82 }; 82 };
83 83
84 BASE_API const void* GetProgramCounter(); 84 BASE_EXPORT const void* GetProgramCounter();
85 85
86 //------------------------------------------------------------------------------ 86 //------------------------------------------------------------------------------
87 // Define a macro to record the current source location. 87 // Define a macro to record the current source location.
88 88
89 #define FROM_HERE tracked_objects::Location( \ 89 #define FROM_HERE tracked_objects::Location( \
90 __FUNCTION__, \ 90 __FUNCTION__, \
91 __FILE__, \ 91 __FILE__, \
92 __LINE__, \ 92 __LINE__, \
93 tracked_objects::GetProgramCounter()) \ 93 tracked_objects::GetProgramCounter()) \
94 94
95 95
96 //------------------------------------------------------------------------------ 96 //------------------------------------------------------------------------------
97 97
98 98
99 class Births; 99 class Births;
100 100
101 class BASE_API Tracked { 101 class BASE_EXPORT Tracked {
102 public: 102 public:
103 Tracked(); 103 Tracked();
104 virtual ~Tracked(); 104 virtual ~Tracked();
105 105
106 // Used to record the FROM_HERE location of a caller. 106 // Used to record the FROM_HERE location of a caller.
107 void SetBirthPlace(const Location& from_here); 107 void SetBirthPlace(const Location& from_here);
108 const Location GetBirthPlace() const; 108 const Location GetBirthPlace() const;
109 109
110 // When a task sits around a long time, such as in a timer, or object watcher, 110 // When a task sits around a long time, such as in a timer, or object watcher,
111 // this method should be called when the task becomes active, and its 111 // this method should be called when the task becomes active, and its
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139 #endif // defined(TRACK_ALL_TASK_OBJECTS) 139 #endif // defined(TRACK_ALL_TASK_OBJECTS)
140 140
141 const void* birth_program_counter_; 141 const void* birth_program_counter_;
142 142
143 DISALLOW_COPY_AND_ASSIGN(Tracked); 143 DISALLOW_COPY_AND_ASSIGN(Tracked);
144 }; 144 };
145 145
146 } // namespace tracked_objects 146 } // namespace tracked_objects
147 147
148 #endif // BASE_TRACKED_H_ 148 #endif // BASE_TRACKED_H_
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