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// Copyright (c) 2010 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 "chrome/browser/net/chrome_net_log.h"
#include <algorithm>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/string_util.h"
#include "base/values.h"
#include "chrome/browser/net/load_timing_observer.h"
#include "chrome/browser/net/net_log_logger.h"
#include "chrome/browser/net/passive_log_collector.h"
#include "chrome/common/chrome_switches.h"
ChromeNetLog::ThreadSafeObserver::ThreadSafeObserver(LogLevel log_level)
: net_log_(NULL),
log_level_(log_level) {
}
ChromeNetLog::ThreadSafeObserver::~ThreadSafeObserver() {
DCHECK(!net_log_);
}
net::NetLog::LogLevel ChromeNetLog::ThreadSafeObserver::log_level() const {
return log_level_;
}
void ChromeNetLog::ThreadSafeObserver::AssertNetLogLockAcquired() const {
if (net_log_)
net_log_->lock_.AssertAcquired();
}
void ChromeNetLog::ThreadSafeObserver::SetLogLevel(
net::NetLog::LogLevel log_level) {
DCHECK(net_log_);
base::AutoLock lock(net_log_->lock_);
log_level_ = log_level;
net_log_->UpdateLogLevel_();
}
ChromeNetLog::Entry::Entry(uint32 order,
net::NetLog::EventType type,
const base::TimeTicks& time,
net::NetLog::Source source,
net::NetLog::EventPhase phase,
net::NetLog::EventParameters* params)
: order(order),
type(type),
time(time),
source(source),
phase(phase),
params(params) {
}
ChromeNetLog::Entry::~Entry() {}
ChromeNetLog::ChromeNetLog()
: last_id_(0),
log_level_(LOG_BASIC),
passive_collector_(new PassiveLogCollector),
load_timing_observer_(new LoadTimingObserver) {
AddObserver(passive_collector_.get());
AddObserver(load_timing_observer_.get());
const CommandLine& command_line = *CommandLine::ForCurrentProcess();
if (command_line.HasSwitch(switches::kLogNetLog)) {
net_log_logger_.reset(new NetLogLogger(
command_line.GetSwitchValuePath(switches::kLogNetLog)));
AddObserver(net_log_logger_.get());
}
}
ChromeNetLog::~ChromeNetLog() {
RemoveObserver(passive_collector_.get());
RemoveObserver(load_timing_observer_.get());
if (net_log_logger_.get()) {
RemoveObserver(net_log_logger_.get());
}
}
void ChromeNetLog::AddEntry(EventType type,
const base::TimeTicks& time,
const Source& source,
EventPhase phase,
EventParameters* params) {
base::AutoLock lock(lock_);
// Notify all of the log observers.
FOR_EACH_OBSERVER(ThreadSafeObserver, observers_,
OnAddEntry(type, time, source, phase, params));
}
uint32 ChromeNetLog::NextID() {
return base::subtle::NoBarrier_AtomicIncrement(&last_id_, 1);
}
net::NetLog::LogLevel ChromeNetLog::GetLogLevel() const {
base::subtle::Atomic32 log_level = base::subtle::NoBarrier_Load(&log_level_);
return static_cast<net::NetLog::LogLevel>(log_level);
}
void ChromeNetLog::AddObserver(ThreadSafeObserver* observer) {
base::AutoLock lock(lock_);
AddObserverWhileLockHeld(observer);
}
void ChromeNetLog::RemoveObserver(ThreadSafeObserver* observer) {
base::AutoLock lock(lock_);
DCHECK_EQ(observer->net_log_, this);
observer->net_log_ = NULL;
observers_.RemoveObserver(observer);
UpdateLogLevel_();
}
void ChromeNetLog::AddObserverAndGetAllPassivelyCapturedEvents(
ThreadSafeObserver* observer, EntryList* passive_entries) {
base::AutoLock lock(lock_);
AddObserverWhileLockHeld(observer);
passive_collector_->GetAllCapturedEvents(passive_entries);
}
void ChromeNetLog::GetAllPassivelyCapturedEvents(EntryList* passive_entries) {
base::AutoLock lock(lock_);
passive_collector_->GetAllCapturedEvents(passive_entries);
}
void ChromeNetLog::ClearAllPassivelyCapturedEvents() {
base::AutoLock lock(lock_);
passive_collector_->Clear();
}
void ChromeNetLog::UpdateLogLevel_() {
lock_.AssertAcquired();
// Look through all the observers and find the finest granularity
// log level (higher values of the enum imply *lower* log levels).
LogLevel new_log_level = LOG_BASIC;
ObserverListBase<ThreadSafeObserver>::Iterator it(observers_);
ThreadSafeObserver* observer;
while ((observer = it.GetNext()) != NULL) {
new_log_level = std::min(new_log_level, observer->log_level());
}
base::subtle::NoBarrier_Store(&log_level_, new_log_level);
}
void ChromeNetLog::AddObserverWhileLockHeld(ThreadSafeObserver* observer) {
DCHECK(!observer->net_log_);
observer->net_log_ = this;
observers_.AddObserver(observer);
UpdateLogLevel_();
}
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