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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CONTENT_BROWSER_WORKER_HOST_WORKER_DOCUMENT_SET_H_ | |
6 #define CONTENT_BROWSER_WORKER_HOST_WORKER_DOCUMENT_SET_H_ | |
7 | |
8 #include <set> | |
9 | |
10 #include "base/basictypes.h" | |
11 #include "base/memory/ref_counted.h" | |
12 | |
13 namespace content { | |
14 class BrowserMessageFilter; | |
15 | |
16 // The WorkerDocumentSet tracks all of the DOM documents associated with a | |
17 // set of workers. With nested workers, multiple workers can share the same | |
18 // WorkerDocumentSet (meaning that they all share the same lifetime, and will | |
19 // all exit when the last document in that set exits, per the WebWorkers spec). | |
20 class WorkerDocumentSet : public base::RefCounted<WorkerDocumentSet> { | |
21 public: | |
22 WorkerDocumentSet(); | |
23 | |
24 // The information we track for each document | |
25 class DocumentInfo { | |
26 public: | |
27 DocumentInfo(BrowserMessageFilter* filter, unsigned long long document_id, | |
28 int renderer_process_id, int render_frame_id); | |
29 BrowserMessageFilter* filter() const { return filter_; } | |
30 unsigned long long document_id() const { return document_id_; } | |
31 int render_process_id() const { return render_process_id_; } | |
32 int render_frame_id() const { return render_frame_id_; } | |
33 | |
34 // Define operator "<", which is used to determine uniqueness within | |
35 // the set. | |
36 bool operator <(const DocumentInfo& other) const { | |
37 // Items are identical if the sender and document_id are identical, | |
38 // otherwise create an arbitrary stable ordering based on the document | |
39 // id/filter. | |
40 if (filter() == other.filter()) { | |
41 return document_id() < other.document_id(); | |
42 } else { | |
43 return reinterpret_cast<unsigned long long>(filter()) < | |
44 reinterpret_cast<unsigned long long>(other.filter()); | |
45 } | |
46 } | |
47 | |
48 private: | |
49 BrowserMessageFilter* filter_; | |
50 unsigned long long document_id_; | |
51 int render_process_id_; | |
52 int render_frame_id_; | |
53 }; | |
54 | |
55 // Adds a document to a shared worker's document set. Also includes the | |
56 // associated render_process_id the document is associated with, to enable | |
57 // communication with the parent tab for things like http auth dialogs. | |
58 void Add(BrowserMessageFilter* parent, | |
59 unsigned long long document_id, | |
60 int render_process_id, | |
61 int render_frame_id); | |
62 | |
63 // Checks to see if a document is in a shared worker's document set. | |
64 bool Contains(BrowserMessageFilter* parent, | |
65 unsigned long long document_id) const; | |
66 | |
67 // Checks to see if the document set contains any documents which is | |
68 // associated with other renderer process than worker_process_id. | |
69 bool ContainsExternalRenderer(int worker_process_id) const; | |
70 | |
71 // Removes a specific document from a worker's document set when that document | |
72 // is detached. | |
73 void Remove(BrowserMessageFilter* parent, unsigned long long document_id); | |
74 | |
75 // Invoked when a render process exits, to remove all associated documents | |
76 // from a worker's document set. | |
77 void RemoveAll(BrowserMessageFilter* parent); | |
78 | |
79 bool IsEmpty() const { return document_set_.empty(); } | |
80 | |
81 // Define a typedef for convenience here when declaring iterators, etc. | |
82 typedef std::set<DocumentInfo> DocumentInfoSet; | |
83 | |
84 // Returns the set of documents associated with this worker. | |
85 const DocumentInfoSet& documents() { return document_set_; } | |
86 | |
87 private: | |
88 friend class base::RefCounted<WorkerDocumentSet>; | |
89 virtual ~WorkerDocumentSet(); | |
90 | |
91 DocumentInfoSet document_set_; | |
92 }; | |
93 | |
94 } // namespace content | |
95 | |
96 #endif // CONTENT_BROWSER_WORKER_HOST_WORKER_DOCUMENT_SET_H_ | |
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