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// Copyright (c) 2011 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)
// MSDN says to #include <intrin.h>, but that breaks the VS2005 build.
extern "C" {
void* _ReturnAddress();
}
#endif
#include "base/tracked.h"
#include "base/stringprintf.h"
#include "base/tracked_objects.h"
using base::TimeTicks;
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) {
}
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;
}
}
}
#if defined(COMPILER_MSVC)
__declspec(noinline)
#endif
BASE_API const void* GetProgramCounter() {
#if defined(COMPILER_MSVC)
return _ReturnAddress();
#elif defined(COMPILER_GCC)
return __builtin_extract_return_addr(__builtin_return_address(0));
#endif // COMPILER_GCC
return NULL;
}
//------------------------------------------------------------------------------
#if !defined(TRACK_ALL_TASK_OBJECTS)
Tracked::Tracked() : birth_program_counter_(NULL) {}
Tracked::~Tracked() {}
void Tracked::SetBirthPlace(const Location& from_here) {
birth_program_counter_ = from_here.program_counter();
}
const Location Tracked::GetBirthPlace() const {
static Location kNone("NoFunctionName", "NeedToSetBirthPlace", -1, NULL);
return kNone;
}
bool Tracked::MissingBirthPlace() const { return false; }
void Tracked::ResetBirthTime() {}
#else
Tracked::Tracked()
: tracked_births_(NULL),
tracked_birth_time_(TimeTicks::Now()) {
}
Tracked::~Tracked() {
if (!ThreadData::IsActive() || !tracked_births_)
return;
ThreadData::current()->TallyADeath(*tracked_births_,
TimeTicks::Now() - tracked_birth_time_);
}
void Tracked::SetBirthPlace(const Location& from_here) {
if (!ThreadData::IsActive())
return;
if (tracked_births_)
tracked_births_->ForgetBirth();
ThreadData* current_thread_data = ThreadData::current();
if (!current_thread_data)
return; // Shutdown started, and this thread wasn't registered.
tracked_births_ = current_thread_data->TallyABirth(from_here);
birth_program_counter_ = from_here.program_counter();
}
const Location Tracked::GetBirthPlace() const {
static Location kNone("UnknownFunctionName", "UnknownFile", -1, NULL);
return tracked_births_ ? tracked_births_->location() : kNone;
}
void Tracked::ResetBirthTime() {
tracked_birth_time_ = TimeTicks::Now();
}
bool Tracked::MissingBirthPlace() const {
return !tracked_births_ || tracked_births_->location().line_number() == -1;
}
#endif // !defined(TRACK_ALL_TASK_OBJECTS)
} // namespace tracked_objects
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