| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // This is the global interface for the dns prefetch services. It centralizes | |
| 6 // initialization, along with all the callbacks etc. to connect to the browser | |
| 7 // process. This allows the more standard DNS prefetching services, such as | |
| 8 // provided by Predictor to be left as more generally usable code, and possibly | |
| 9 // be shared across multiple client projects. | |
| 10 | |
| 11 #ifndef CHROME_BROWSER_NET_PREDICTOR_API_H_ | |
| 12 #define CHROME_BROWSER_NET_PREDICTOR_API_H_ | |
| 13 #pragma once | |
| 14 | |
| 15 | |
| 16 #include <string> | |
| 17 #include <vector> | |
| 18 | |
| 19 #include "base/memory/ref_counted.h" | |
| 20 #include "chrome/browser/autocomplete/autocomplete.h" | |
| 21 #include "chrome/browser/net/predictor.h" | |
| 22 | |
| 23 namespace base { | |
| 24 class FieldTrial; | |
| 25 } | |
| 26 | |
| 27 class PrefService; | |
| 28 | |
| 29 namespace chrome_browser_net { | |
| 30 | |
| 31 // Deletes |referral_list| when done. | |
| 32 void FinalizePredictorInitialization( | |
| 33 Predictor* global_predictor, | |
| 34 const std::vector<GURL>& urls_to_prefetch, | |
| 35 base::ListValue* referral_list); | |
| 36 | |
| 37 // Free all resources allocated by FinalizePredictorInitialization. After that | |
| 38 // you must not call any function from this file. | |
| 39 void FreePredictorResources(); | |
| 40 | |
| 41 //------------------------------------------------------------------------------ | |
| 42 // Global APIs relating to predictions in browser. | |
| 43 void EnablePredictor(bool enable); | |
| 44 void DiscardInitialNavigationHistory(); | |
| 45 void RegisterUserPrefs(PrefService* user_prefs); | |
| 46 | |
| 47 // Renderer bundles up list and sends to this browser API via IPC. | |
| 48 // TODO(jar): Use UrlList instead to include port and scheme. | |
| 49 void DnsPrefetchList(const NameList& hostnames); | |
| 50 | |
| 51 // This API is used by the autocomplete popup box (as user types). | |
| 52 // This will either preresolve the domain name, or possibly preconnect creating | |
| 53 // an open TCP/IP connection to the host. | |
| 54 void AnticipateOmniboxUrl(const GURL& url, bool preconnectable); | |
| 55 | |
| 56 // This API should only be called when we're absolutely certain that we will | |
| 57 // be connecting to the URL. It will preconnect the url and it's associated | |
| 58 // subresource domains immediately. | |
| 59 void PreconnectUrlAndSubresources(const GURL& url); | |
| 60 | |
| 61 // When displaying info in about:dns, the following API is called. | |
| 62 void PredictorGetHtmlInfo(std::string* output); | |
| 63 | |
| 64 // Destroy the predictor's internal state: referrers and work queue. | |
| 65 void ClearPredictorCache(); | |
| 66 | |
| 67 //------------------------------------------------------------------------------ | |
| 68 // When we navigate to a frame that may contain embedded resources, we may know | |
| 69 // in advance some other URLs that will need to be connected to (via TCP and | |
| 70 // sometimes SSL). This function initiates those connections | |
| 71 void PredictFrameSubresources(const GURL& url); | |
| 72 | |
| 73 // During startup, we learn what the first N urls visited are, and then resolve | |
| 74 // the associated hosts ASAP during our next startup. | |
| 75 void LearnAboutInitialNavigation(const GURL& url); | |
| 76 | |
| 77 // Call when we should learn from a navigation about a relationship to a | |
| 78 // subresource target, and its containing frame, which was loaded as a referring | |
| 79 // URL. | |
| 80 void LearnFromNavigation(const GURL& referring_url, const GURL& target_url); | |
| 81 | |
| 82 //------------------------------------------------------------------------------ | |
| 83 void SavePredictorStateForNextStartupAndTrim(PrefService* prefs); | |
| 84 // Helper class to handle global init and shutdown. | |
| 85 class PredictorInit { | |
| 86 public: | |
| 87 // Too many concurrent lookups performed in parallel may overload a resolver, | |
| 88 // or may cause problems for a local router. The following limits that count. | |
| 89 static const size_t kMaxSpeculativeParallelResolves; | |
| 90 | |
| 91 // When prefetch requests are queued beyond some period of time, then the | |
| 92 // system is congested, and we need to clear all queued requests to get out | |
| 93 // of that state. The following is the suggested default time limit. | |
| 94 static const int kMaxSpeculativeResolveQueueDelayMs; | |
| 95 | |
| 96 PredictorInit(PrefService* user_prefs, PrefService* local_state, | |
| 97 bool preconnect_enabled); | |
| 98 ~PredictorInit(); | |
| 99 | |
| 100 private: | |
| 101 // Maintain a field trial instance when we do A/B testing. | |
| 102 scoped_refptr<base::FieldTrial> trial_; | |
| 103 | |
| 104 DISALLOW_COPY_AND_ASSIGN(PredictorInit); | |
| 105 }; | |
| 106 | |
| 107 } // namespace chrome_browser_net | |
| 108 | |
| 109 #endif // CHROME_BROWSER_NET_PREDICTOR_API_H_ | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 7467012:
Modifying prefetch to account for multi-profile. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/