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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.
#ifndef CHROME_BROWSER_IO_THREAD_H_
#define CHROME_BROWSER_IO_THREAD_H_
#include "base/basictypes.h"
#include "base/task.h"
#include "chrome/browser/browser_process_sub_thread.h"
#include "chrome/common/net/dns.h"
#include "net/base/host_resolver.h"
class ListValue;
namespace chrome_browser_net {
class DnsMaster;
} // namespace chrome_browser_net
class IOThread : public BrowserProcessSubThread {
public:
IOThread();
virtual ~IOThread();
net::HostResolver* host_resolver();
// Initializes the DnsMaster. |prefetching_enabled| indicates whether or
// not dns prefetching should be enabled. This should be called by the UI
// thread. It will post a task to the IO thread to perform the actual
// initialization.
void InitDnsMaster(bool prefetching_enabled,
base::TimeDelta max_queue_delay,
size_t max_concurrent,
const chrome_common_net::NameList& hostnames_to_prefetch,
ListValue* referral_list);
// Handles changing to On The Record mode. Posts a task for this onto the
// IOThread's message loop.
void ChangedToOnTheRecord();
protected:
virtual void Init();
virtual void CleanUp();
private:
void InitDnsMasterOnIOThread(
bool prefetching_enabled,
base::TimeDelta max_queue_delay,
size_t max_concurrent,
chrome_common_net::NameList hostnames_to_prefetch,
ListValue* referral_list);
void ChangedToOnTheRecordOnIOThread();
// These member variables are basically global, but their lifetimes are tied
// to the IOThread. IOThread owns them all, despite not using scoped_ptr.
// This is because the destructor of IOThread runs on the wrong thread. All
// member variables should be deleted in CleanUp(). Most of these will be
// initialized in Init().
net::HostResolver* host_resolver_;
net::HostResolver::Observer* prefetch_observer_;
chrome_browser_net::DnsMaster* dns_master_;
DISALLOW_COPY_AND_ASSIGN(IOThread);
};
#endif // CHROME_BROWSER_IO_THREAD_H_
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