103 lines
2.6 KiB
C++
103 lines
2.6 KiB
C++
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "build/build_config.h"
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#if defined(COMPILER_MSVC)
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// MSDN says to #include <intrin.h>, but that breaks the VS2005 build.
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extern "C" {
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void* _ReturnAddress();
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}
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#endif
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#include "base/location.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/strings/stringprintf.h"
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namespace tracked_objects {
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Location::Location(const char* function_name,
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const char* file_name,
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int line_number,
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const void* program_counter)
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: function_name_(function_name),
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file_name_(file_name),
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line_number_(line_number),
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program_counter_(program_counter) {
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}
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Location::Location()
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: function_name_("Unknown"),
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file_name_("Unknown"),
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line_number_(-1),
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program_counter_(NULL) {
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}
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std::string Location::ToString() const {
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return std::string(function_name_) + "@" + file_name_ + ":" +
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base::IntToString(line_number_);
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}
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void Location::Write(bool display_filename, bool display_function_name,
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std::string* output) const {
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base::StringAppendF(output, "%s[%d] ",
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display_filename ? file_name_ : "line",
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line_number_);
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if (display_function_name) {
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WriteFunctionName(output);
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output->push_back(' ');
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}
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}
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void Location::WriteFunctionName(std::string* output) const {
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// Translate "<" to "<" for HTML safety.
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// TODO(jar): Support ASCII or html for logging in ASCII.
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for (const char *p = function_name_; *p; p++) {
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switch (*p) {
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case '<':
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output->append("<");
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break;
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case '>':
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output->append(">");
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break;
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default:
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output->push_back(*p);
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break;
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}
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}
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}
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//------------------------------------------------------------------------------
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LocationSnapshot::LocationSnapshot() : line_number(-1) {
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}
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LocationSnapshot::LocationSnapshot(
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const tracked_objects::Location& location)
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: file_name(location.file_name()),
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function_name(location.function_name()),
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line_number(location.line_number()) {
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}
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LocationSnapshot::~LocationSnapshot() {
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}
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//------------------------------------------------------------------------------
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#if defined(COMPILER_MSVC)
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__declspec(noinline)
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#endif
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BASE_EXPORT const void* GetProgramCounter() {
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#if defined(COMPILER_MSVC)
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return _ReturnAddress();
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#elif defined(COMPILER_GCC)
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return __builtin_extract_return_addr(__builtin_return_address(0));
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#endif // COMPILER_GCC
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return NULL;
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}
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} // namespace tracked_objects
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