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// 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.
#ifndef CHROME_BROWSER_NET_LOAD_TIMING_OBSERVER_H_
#define CHROME_BROWSER_NET_LOAD_TIMING_OBSERVER_H_
#include "base/gtest_prod_util.h"
#include "base/hash_tables.h"
#include "base/time.h"
#include "net/base/net_log.h"
#include "webkit/glue/resource_loader_bridge.h"
namespace content {
struct ResourceResponse;
}
namespace net {
class URLRequest;
} // namespace net
// LoadTimingObserver watches the NetLog event stream and collects the network
// timing information.
//
// LoadTimingObserver lives completely on the IOThread and ignores events from
// other threads. It is not safe to use from other threads.
class LoadTimingObserver : public net::NetLog::ThreadSafeObserver {
public:
struct URLRequestRecord {
URLRequestRecord();
webkit_glue::ResourceLoadTimingInfo timing;
uint32 connect_job_id;
uint32 socket_log_id;
bool socket_reused;
base::TimeTicks base_ticks;
};
struct HTTPStreamJobRecord {
HTTPStreamJobRecord();
uint32 socket_log_id;
bool socket_reused;
base::TimeTicks connect_start;
base::TimeTicks connect_end;
base::TimeTicks dns_start;
base::TimeTicks dns_end;
base::TimeTicks ssl_start;
base::TimeTicks ssl_end;
};
struct ConnectJobRecord {
base::TimeTicks dns_start;
base::TimeTicks dns_end;
};
struct SocketRecord {
base::TimeTicks ssl_start;
base::TimeTicks ssl_end;
};
LoadTimingObserver();
virtual ~LoadTimingObserver();
// Starts observing specified NetLog. Must not already be watching a NetLog.
// Separate from constructor to enforce thread safety.
void StartObserving(net::NetLog* net_log);
URLRequestRecord* GetURLRequestRecord(uint32 source_id);
// net::NetLog::ThreadSafeObserver implementation:
virtual void OnAddEntry(const net::NetLog::Entry& entry) OVERRIDE;
static void PopulateTimingInfo(net::URLRequest* request,
content::ResourceResponse* response);
private:
FRIEND_TEST_ALL_PREFIXES(LoadTimingObserverTest,
HTTPStreamJobRecord);
FRIEND_TEST_ALL_PREFIXES(LoadTimingObserverTest,
ConnectJobRecord);
FRIEND_TEST_ALL_PREFIXES(LoadTimingObserverTest,
SocketRecord);
void OnAddURLRequestEntry(const net::NetLog::Entry& entry);
void OnAddHTTPStreamJobEntry(const net::NetLog::Entry& entry);
void OnAddConnectJobEntry(const net::NetLog::Entry& entry);
void OnAddSocketEntry(const net::NetLog::Entry& entry);
URLRequestRecord* CreateURLRequestRecord(uint32 source_id);
void DeleteURLRequestRecord(uint32 source_id);
// Returns current time. Virtual for unit tests.
virtual base::TimeTicks GetCurrentTime() const;
typedef base::hash_map<uint32, URLRequestRecord> URLRequestToRecordMap;
typedef base::hash_map<uint32, HTTPStreamJobRecord> HTTPStreamJobToRecordMap;
typedef base::hash_map<uint32, ConnectJobRecord> ConnectJobToRecordMap;
typedef base::hash_map<uint32, SocketRecord> SocketToRecordMap;
URLRequestToRecordMap url_request_to_record_;
HTTPStreamJobToRecordMap http_stream_job_to_record_;
ConnectJobToRecordMap connect_job_to_record_;
SocketToRecordMap socket_to_record_;
uint32 last_connect_job_id_;
ConnectJobRecord last_connect_job_record_;
DISALLOW_COPY_AND_ASSIGN(LoadTimingObserver);
};
#endif // CHROME_BROWSER_NET_LOAD_TIMING_OBSERVER_H_
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