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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_ | 5 #ifndef CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_ |
6 #define CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_ | 6 #define CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_ |
7 | 7 |
8 #include <map> | 8 #include <list> |
9 #include <utility> | |
10 | 9 |
11 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
| 11 #include "base/time.h" |
12 #include "chrome/browser/prerender/prerender_handle.h" | 12 #include "chrome/browser/prerender/prerender_handle.h" |
13 #include "chrome/browser/profiles/profile_keyed_service.h" | 13 #include "chrome/browser/profiles/profile_keyed_service.h" |
14 #include "googleurl/src/gurl.h" | 14 #include "googleurl/src/gurl.h" |
15 | 15 |
16 class Profile; | 16 class Profile; |
17 | 17 |
18 namespace content { | 18 namespace content { |
19 struct Referrer; | 19 struct Referrer; |
20 } | 20 } |
21 | 21 |
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34 // and controls the PrerenderManager accordingly. | 34 // and controls the PrerenderManager accordingly. |
35 class PrerenderLinkManager : public ProfileKeyedService, | 35 class PrerenderLinkManager : public ProfileKeyedService, |
36 public PrerenderHandle::Observer { | 36 public PrerenderHandle::Observer { |
37 public: | 37 public: |
38 explicit PrerenderLinkManager(PrerenderManager* manager); | 38 explicit PrerenderLinkManager(PrerenderManager* manager); |
39 virtual ~PrerenderLinkManager(); | 39 virtual ~PrerenderLinkManager(); |
40 | 40 |
41 // A <link rel=prerender ...> element has been inserted into the document. | 41 // A <link rel=prerender ...> element has been inserted into the document. |
42 // The |prerender_id| must be unique per |child_id|, and is assigned by the | 42 // The |prerender_id| must be unique per |child_id|, and is assigned by the |
43 // WebPrerendererClient. | 43 // WebPrerendererClient. |
44 // Returns true if the prerender was accepted by the prerender manager, | 44 void OnAddPrerender(int child_id, |
45 // and false if not. In either case, the |prerender_id| is usable for | 45 int prerender_id, |
46 // future OnCancelPrerender and OnAbandonPrerender calls. | 46 const GURL& url, |
47 bool OnAddPrerender( | 47 const content::Referrer& referrer, |
48 int child_id, | 48 const gfx::Size& size, |
49 int prerender_id, | 49 int render_view_route_id); |
50 const GURL& url, | |
51 const content::Referrer& referrer, | |
52 const gfx::Size& size, | |
53 int render_view_route_id); | |
54 | 50 |
55 // A <link rel=prerender ...> element has been explicitly removed from a | 51 // A <link rel=prerender ...> element has been explicitly removed from a |
56 // document. | 52 // document. |
57 void OnCancelPrerender(int child_id, int prerender_id); | 53 void OnCancelPrerender(int child_id, int prerender_id); |
58 | 54 |
59 // A renderer launching <link rel=prerender ...> has navigated away from the | 55 // A renderer launching <link rel=prerender ...> has navigated away from the |
60 // launching page, the launching renderer process has crashed, or perhaps the | 56 // launching page, the launching renderer process has crashed, or perhaps the |
61 // renderer process was fast-closed when the last render view in it was | 57 // renderer process was fast-closed when the last render view in it was |
62 // closed. | 58 // closed. |
63 void OnAbandonPrerender(int child_id, int prerender_id); | 59 void OnAbandonPrerender(int child_id, int prerender_id); |
64 | 60 |
65 // If a renderer channel closes (crash, fast exit, etc...), that's effectively | 61 // If a renderer channel closes (crash, fast exit, etc...), that's effectively |
66 // an abandon of any prerenders launched by that child. | 62 // an abandon of any prerenders launched by that child. |
67 void OnChannelClosing(int child_id); | 63 void OnChannelClosing(int child_id); |
68 | 64 |
69 private: | 65 private: |
70 friend class PrerenderBrowserTest; | 66 friend class PrerenderBrowserTest; |
71 friend class PrerenderTest; | 67 friend class PrerenderTest; |
72 | 68 |
73 typedef std::pair<int, int> ChildAndPrerenderIdPair; | 69 struct LinkPrerender { |
74 typedef std::map<ChildAndPrerenderIdPair, PrerenderHandle*> | 70 LinkPrerender(int launcher_child_id, |
75 IdPairToPrerenderHandleMap; | 71 int prerender_id, |
| 72 const GURL& url, |
| 73 const content::Referrer& referrer, |
| 74 const gfx::Size& size, |
| 75 int render_view_route_id, |
| 76 base::TimeTicks creation_time); |
| 77 ~LinkPrerender(); |
76 | 78 |
77 void RemovePrerender( | 79 // Parameters from PrerenderLinkManager::OnAddPrerender(): |
78 const IdPairToPrerenderHandleMap::iterator& id_to_handle_iter); | 80 int launcher_child_id; |
| 81 int prerender_id; |
| 82 GURL url; |
| 83 content::Referrer referrer; |
| 84 gfx::Size size; |
| 85 int render_view_route_id; |
| 86 |
| 87 // The time at which this Prerender was added to PrerenderLinkManager. |
| 88 base::TimeTicks creation_time; |
| 89 |
| 90 // Initially NULL, |handle| is set once we start this prerender. It is owned |
| 91 // by this struct, and must be deleted before destructing this struct. |
| 92 PrerenderHandle* handle; |
| 93 }; |
79 | 94 |
80 bool IsEmpty() const; | 95 bool IsEmpty() const; |
81 | 96 |
82 IdPairToPrerenderHandleMap::iterator FindPrerenderHandle( | 97 // Returns a count of currently running prerenders. |
83 PrerenderHandle* prerender_handle); | 98 size_t CountRunningPrerenders() const; |
| 99 |
| 100 // Start any prerenders that can be started, respecting concurrency limits for |
| 101 // the system and per launcher. |
| 102 void StartPrerenders(); |
| 103 |
| 104 LinkPrerender* FindByLauncherChildIdAndPrerenderId(int child_id, |
| 105 int prerender_id); |
| 106 |
| 107 LinkPrerender* FindByPrerenderHandle(PrerenderHandle* prerender_handle); |
| 108 |
| 109 void RemovePrerender(LinkPrerender* prerender); |
| 110 |
| 111 // From ProfileKeyedService: |
| 112 virtual void Shutdown() OVERRIDE; |
84 | 113 |
85 // From PrerenderHandle::Observer: | 114 // From PrerenderHandle::Observer: |
86 virtual void OnPrerenderStart(PrerenderHandle* prerender_handle) OVERRIDE; | 115 virtual void OnPrerenderStart(PrerenderHandle* prerender_handle) OVERRIDE; |
87 virtual void OnPrerenderStop(PrerenderHandle* prerender_handle) OVERRIDE; | 116 virtual void OnPrerenderStop(PrerenderHandle* prerender_handle) OVERRIDE; |
88 virtual void OnPrerenderAddAlias(PrerenderHandle* prerender_handle, | 117 virtual void OnPrerenderAddAlias(PrerenderHandle* prerender_handle, |
89 const GURL& alias_url) OVERRIDE; | 118 const GURL& alias_url) OVERRIDE; |
90 | 119 |
| 120 bool has_shutdown_; |
| 121 |
91 PrerenderManager* manager_; | 122 PrerenderManager* manager_; |
92 | 123 |
93 // A map from child process id and prerender id to PrerenderHandles. We map | 124 // All prerenders known to this PrerenderLinkManager. Insertions are always |
94 // from this pair because the prerender ids are only unique within their | 125 // made at the back, so the oldest prerender is at the front, and the youngest |
95 // renderer process. | 126 // at the back. |
96 IdPairToPrerenderHandleMap ids_to_handle_map_; | 127 std::list<LinkPrerender> prerenders_; |
97 | 128 |
98 DISALLOW_COPY_AND_ASSIGN(PrerenderLinkManager); | 129 DISALLOW_COPY_AND_ASSIGN(PrerenderLinkManager); |
99 }; | 130 }; |
100 | 131 |
101 } // namespace prerender | 132 } // namespace prerender |
102 | 133 |
103 #endif // CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_ | 134 #endif // CHROME_BROWSER_PRERENDER_PRERENDER_LINK_MANAGER_H_ |
104 | 135 |
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