105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
|
// 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 "base/location.h"
|
||
|
|
|
||
|
|
#if defined(COMPILER_MSVC)
|
||
|
|
#include <intrin.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "base/compiler_specific.h"
|
||
|
|
#include "base/strings/string_number_conversions.h"
|
||
|
|
#include "base/strings/stringprintf.h"
|
||
|
|
#include "build/build_config.h"
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
|
||
|
|
Location::Location() = default;
|
||
|
|
Location::Location(const Location& other) = default;
|
||
|
|
|
||
|
|
Location::Location(const char* file_name, const void* program_counter)
|
||
|
|
: file_name_(file_name), program_counter_(program_counter) {}
|
||
|
|
|
||
|
|
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) {
|
||
|
|
#if !defined(OS_NACL)
|
||
|
|
// The program counter should not be null except in a default constructed
|
||
|
|
// (empty) Location object. This value is used for identity, so if it doesn't
|
||
|
|
// uniquely identify a location, things will break.
|
||
|
|
//
|
||
|
|
// The program counter isn't supported in NaCl so location objects won't work
|
||
|
|
// properly in that context.
|
||
|
|
DCHECK(program_counter);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
std::string Location::ToString() const {
|
||
|
|
if (has_source_info()) {
|
||
|
|
return std::string(function_name_) + "@" + file_name_ + ":" +
|
||
|
|
NumberToString(line_number_);
|
||
|
|
}
|
||
|
|
return StringPrintf("pc:%p", program_counter_);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(COMPILER_MSVC)
|
||
|
|
#define RETURN_ADDRESS() _ReturnAddress()
|
||
|
|
#elif defined(COMPILER_GCC) && !defined(OS_NACL)
|
||
|
|
#define RETURN_ADDRESS() \
|
||
|
|
__builtin_extract_return_addr(__builtin_return_address(0))
|
||
|
|
#else
|
||
|
|
#define RETURN_ADDRESS() nullptr
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if !BUILDFLAG(FROM_HERE_USES_LOCATION_BUILTINS)
|
||
|
|
#if !BUILDFLAG(ENABLE_LOCATION_SOURCE)
|
||
|
|
|
||
|
|
// static
|
||
|
|
NOINLINE Location Location::CreateFromHere(const char* file_name) {
|
||
|
|
return Location(file_name, RETURN_ADDRESS());
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
// static
|
||
|
|
NOINLINE Location Location::CreateFromHere(const char* function_name,
|
||
|
|
const char* file_name,
|
||
|
|
int line_number) {
|
||
|
|
return Location(function_name, file_name, line_number, RETURN_ADDRESS());
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if SUPPORTS_LOCATION_BUILTINS && BUILDFLAG(ENABLE_LOCATION_SOURCE)
|
||
|
|
// static
|
||
|
|
NOINLINE Location Location::Current(const char* function_name,
|
||
|
|
const char* file_name,
|
||
|
|
int line_number) {
|
||
|
|
return Location(function_name, file_name, line_number, RETURN_ADDRESS());
|
||
|
|
}
|
||
|
|
#elif SUPPORTS_LOCATION_BUILTINS
|
||
|
|
// static
|
||
|
|
NOINLINE Location Location::Current(const char* file_name) {
|
||
|
|
return Location(file_name, RETURN_ADDRESS());
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
// static
|
||
|
|
NOINLINE Location Location::Current() {
|
||
|
|
return Location(nullptr, RETURN_ADDRESS());
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
NOINLINE const void* GetProgramCounter() {
|
||
|
|
return RETURN_ADDRESS();
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace base
|