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| 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 #include "build/build_config.h" | |
| 6 | |
| 7 #if defined(COMPILER_MSVC) | |
| 8 #include <intrin.h> | |
| 9 #endif | |
| 10 | |
| 11 #include "base/location.h" | |
| 12 #include "base/strings/string_number_conversions.h" | |
| 13 #include "base/strings/stringprintf.h" | |
| 14 | |
| 15 namespace tracked_objects { | |
| 16 | |
| 17 Location::Location(const char* function_name, | |
| 18 const char* file_name, | |
| 19 int line_number, | |
| 20 const void* program_counter) | |
| 21 : function_name_(function_name), | |
| 22 file_name_(file_name), | |
| 23 line_number_(line_number), | |
| 24 program_counter_(program_counter) { | |
| 25 } | |
| 26 | |
| 27 Location::Location() | |
| 28 : function_name_("Unknown"), | |
| 29 file_name_("Unknown"), | |
| 30 line_number_(-1), | |
| 31 program_counter_(NULL) { | |
| 32 } | |
| 33 | |
| 34 Location::Location(const Location& other) | |
| 35 : function_name_(other.function_name_), | |
| 36 file_name_(other.file_name_), | |
| 37 line_number_(other.line_number_), | |
| 38 program_counter_(other.program_counter_) { | |
| 39 } | |
| 40 | |
| 41 std::string Location::ToString() const { | |
| 42 return std::string(function_name_) + "@" + file_name_ + ":" + | |
| 43 base::IntToString(line_number_); | |
| 44 } | |
| 45 | |
| 46 void Location::Write(bool display_filename, bool display_function_name, | |
| 47 std::string* output) const { | |
| 48 base::StringAppendF(output, "%s[%d] ", | |
| 49 display_filename ? file_name_ : "line", | |
| 50 line_number_); | |
| 51 | |
| 52 if (display_function_name) { | |
| 53 WriteFunctionName(output); | |
| 54 output->push_back(' '); | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 void Location::WriteFunctionName(std::string* output) const { | |
| 59 // Translate "<" to "<" for HTML safety. | |
| 60 // TODO(jar): Support ASCII or html for logging in ASCII. | |
| 61 for (const char *p = function_name_; *p; p++) { | |
| 62 switch (*p) { | |
| 63 case '<': | |
| 64 output->append("<"); | |
| 65 break; | |
| 66 | |
| 67 case '>': | |
| 68 output->append(">"); | |
| 69 break; | |
| 70 | |
| 71 default: | |
| 72 output->push_back(*p); | |
| 73 break; | |
| 74 } | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 //------------------------------------------------------------------------------ | |
| 79 LocationSnapshot::LocationSnapshot() : line_number(-1) { | |
| 80 } | |
| 81 | |
| 82 LocationSnapshot::LocationSnapshot( | |
| 83 const tracked_objects::Location& location) | |
| 84 : file_name(location.file_name()), | |
| 85 function_name(location.function_name()), | |
| 86 line_number(location.line_number()) { | |
| 87 } | |
| 88 | |
| 89 LocationSnapshot::~LocationSnapshot() { | |
| 90 } | |
| 91 | |
| 92 //------------------------------------------------------------------------------ | |
| 93 #if defined(COMPILER_MSVC) | |
| 94 __declspec(noinline) | |
| 95 #endif | |
| 96 BASE_EXPORT const void* GetProgramCounter() { | |
| 97 #if defined(COMPILER_MSVC) | |
| 98 return _ReturnAddress(); | |
| 99 #elif defined(COMPILER_GCC) && !defined(OS_NACL) | |
| 100 return __builtin_extract_return_addr(__builtin_return_address(0)); | |
| 101 #else | |
| 102 return NULL; | |
| 103 #endif | |
| 104 } | |
| 105 | |
| 106 } // namespace tracked_objects | |
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