LoadTiming in net part 7: Hooking it all up

chrome/browser/net/load_timing_observer.h

-// 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();
-
-#if !defined(OS_IOS)
-    webkit_glue::ResourceLoadTimingInfo timing;
-#endif
-    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_