The Tor Browser / file comparison
comparison: security/sandbox/chromium/base/location.h
security/sandbox/chromium/base/location.h
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
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| -1:000000000000 | 0:98c744ccd7a9 |
|---|---|
| 1 // Copyright (c) 2012 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 #ifndef BASE_LOCATION_H_ | |
| 6 #define BASE_LOCATION_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "base/base_export.h" | |
| 11 #include "base/basictypes.h" | |
| 12 | |
| 13 namespace tracked_objects { | |
| 14 | |
| 15 // Location provides basic info where of an object was constructed, or was | |
| 16 // significantly brought to life. | |
| 17 class BASE_EXPORT Location { | |
| 18 public: | |
| 19 // Constructor should be called with a long-lived char*, such as __FILE__. | |
| 20 // It assumes the provided value will persist as a global constant, and it | |
| 21 // will not make a copy of it. | |
| 22 Location(const char* function_name, | |
| 23 const char* file_name, | |
| 24 int line_number, | |
| 25 const void* program_counter); | |
| 26 | |
| 27 // Provide a default constructor for easy of debugging. | |
| 28 Location(); | |
| 29 | |
| 30 // Comparison operator for insertion into a std::map<> hash tables. | |
| 31 // All we need is *some* (any) hashing distinction. Strings should already | |
| 32 // be unique, so we don't bother with strcmp or such. | |
| 33 // Use line number as the primary key (because it is fast, and usually gets us | |
| 34 // a difference), and then pointers as secondary keys (just to get some | |
| 35 // distinctions). | |
| 36 bool operator < (const Location& other) const { | |
| 37 if (line_number_ != other.line_number_) | |
| 38 return line_number_ < other.line_number_; | |
| 39 if (file_name_ != other.file_name_) | |
| 40 return file_name_ < other.file_name_; | |
| 41 return function_name_ < other.function_name_; | |
| 42 } | |
| 43 | |
| 44 const char* function_name() const { return function_name_; } | |
| 45 const char* file_name() const { return file_name_; } | |
| 46 int line_number() const { return line_number_; } | |
| 47 const void* program_counter() const { return program_counter_; } | |
| 48 | |
| 49 std::string ToString() const; | |
| 50 | |
| 51 // Translate the some of the state in this instance into a human readable | |
| 52 // string with HTML characters in the function names escaped, and append that | |
| 53 // string to |output|. Inclusion of the file_name_ and function_name_ are | |
| 54 // optional, and controlled by the boolean arguments. | |
| 55 void Write(bool display_filename, bool display_function_name, | |
| 56 std::string* output) const; | |
| 57 | |
| 58 // Write function_name_ in HTML with '<' and '>' properly encoded. | |
| 59 void WriteFunctionName(std::string* output) const; | |
| 60 | |
| 61 private: | |
| 62 const char* function_name_; | |
| 63 const char* file_name_; | |
| 64 int line_number_; | |
| 65 const void* program_counter_; | |
| 66 }; | |
| 67 | |
| 68 // A "snapshotted" representation of the Location class that can safely be | |
| 69 // passed across process boundaries. | |
| 70 struct BASE_EXPORT LocationSnapshot { | |
| 71 // The default constructor is exposed to support the IPC serialization macros. | |
| 72 LocationSnapshot(); | |
| 73 explicit LocationSnapshot(const tracked_objects::Location& location); | |
| 74 ~LocationSnapshot(); | |
| 75 | |
| 76 std::string file_name; | |
| 77 std::string function_name; | |
| 78 int line_number; | |
| 79 }; | |
| 80 | |
| 81 BASE_EXPORT const void* GetProgramCounter(); | |
| 82 | |
| 83 // Define a macro to record the current source location. | |
| 84 #define FROM_HERE FROM_HERE_WITH_EXPLICIT_FUNCTION(__FUNCTION__) | |
| 85 | |
| 86 #define FROM_HERE_WITH_EXPLICIT_FUNCTION(function_name) \ | |
| 87 ::tracked_objects::Location(function_name, \ | |
| 88 __FILE__, \ | |
| 89 __LINE__, \ | |
| 90 ::tracked_objects::GetProgramCounter()) | |
| 91 | |
| 92 } // namespace tracked_objects | |
| 93 | |
| 94 #endif // BASE_LOCATION_H_ |
