chromium/net/dns/system_dns_config_change_notifier.cc

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "net/dns/system_dns_config_change_notifier.h"

#include <map>
#include <optional>
#include <utility>

#include "base/check_op.h"
#include "base/functional/bind.h"
#include "base/location.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/not_fatal_until.h"
#include "base/sequence_checker.h"
#include "base/synchronization/lock.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/task_traits.h"
#include "base/task/thread_pool.h"
#include "net/dns/dns_config_service.h"

namespace net {

namespace {

// Internal information and handling for a registered Observer. Handles
// posting to and DCHECKing the correct sequence for the Observer.
class WrappedObserver { … };

}  // namespace

// Internal core to be destroyed via base::OnTaskRunnerDeleter to ensure
// sequence safety.
class SystemDnsConfigChangeNotifier::Core { … };

SystemDnsConfigChangeNotifier::SystemDnsConfigChangeNotifier()
    : … { … }

SystemDnsConfigChangeNotifier::SystemDnsConfigChangeNotifier(
    scoped_refptr<base::SequencedTaskRunner> task_runner,
    std::unique_ptr<DnsConfigService> dns_config_service)
    : … { … }

SystemDnsConfigChangeNotifier::~SystemDnsConfigChangeNotifier() = default;

void SystemDnsConfigChangeNotifier::AddObserver(Observer* observer) { … }

void SystemDnsConfigChangeNotifier::RemoveObserver(Observer* observer) { … }

void SystemDnsConfigChangeNotifier::RefreshConfig() { … }

void SystemDnsConfigChangeNotifier::SetDnsConfigServiceForTesting(
    std::unique_ptr<DnsConfigService> dns_config_service,
    base::OnceClosure done_cb) { … }

}  // namespace net