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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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