| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "build/build_config.h" |
| |
| #if defined(COMPILER_MSVC) |
| #include <intrin.h> |
| #endif |
| |
| #include "base/location.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/stringprintf.h" |
| |
| namespace tracked_objects { |
| |
| Location::Location(const char* function_name, |
| const char* file_name, |
| int line_number, |
| const void* program_counter) |
| : function_name_(function_name), |
| file_name_(file_name), |
| line_number_(line_number), |
| program_counter_(program_counter) { |
| } |
| |
| Location::Location() |
| : function_name_("Unknown"), |
| file_name_("Unknown"), |
| line_number_(-1), |
| program_counter_(NULL) { |
| } |
| |
| Location::Location(const Location& other) |
| : function_name_(other.function_name_), |
| file_name_(other.file_name_), |
| line_number_(other.line_number_), |
| program_counter_(other.program_counter_) { |
| } |
| |
| std::string Location::ToString() const { |
| return std::string(function_name_) + "@" + file_name_ + ":" + |
| base::IntToString(line_number_); |
| } |
| |
| void Location::Write(bool display_filename, bool display_function_name, |
| std::string* output) const { |
| base::StringAppendF(output, "%s[%d] ", |
| display_filename ? file_name_ : "line", |
| line_number_); |
| |
| if (display_function_name) { |
| WriteFunctionName(output); |
| output->push_back(' '); |
| } |
| } |
| |
| void Location::WriteFunctionName(std::string* output) const { |
| // Translate "<" to "<" for HTML safety. |
| // TODO(jar): Support ASCII or html for logging in ASCII. |
| for (const char *p = function_name_; *p; p++) { |
| switch (*p) { |
| case '<': |
| output->append("<"); |
| break; |
| |
| case '>': |
| output->append(">"); |
| break; |
| |
| default: |
| output->push_back(*p); |
| break; |
| } |
| } |
| } |
| |
| //------------------------------------------------------------------------------ |
| LocationSnapshot::LocationSnapshot() : line_number(-1) { |
| } |
| |
| LocationSnapshot::LocationSnapshot( |
| const tracked_objects::Location& location) |
| : file_name(location.file_name()), |
| function_name(location.function_name()), |
| line_number(location.line_number()) { |
| } |
| |
| LocationSnapshot::~LocationSnapshot() { |
| } |
| |
| //------------------------------------------------------------------------------ |
| #if defined(COMPILER_MSVC) |
| __declspec(noinline) |
| #endif |
| const void* GetProgramCounter() { |
| #if defined(COMPILER_MSVC) |
| return _ReturnAddress(); |
| #elif defined(COMPILER_GCC) && !defined(OS_NACL) |
| return __builtin_extract_return_addr(__builtin_return_address(0)); |
| #else |
| return NULL; |
| #endif |
| } |
| |
| } // namespace tracked_objects |