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1 // Copyright (c) 2013 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_STREAMS_STREAM_CONTEXT_H_ | |
6 #define CONTENT_BROWSER_STREAMS_STREAM_CONTEXT_H_ | |
7 | |
8 #include "base/memory/ref_counted.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "base/sequenced_task_runner_helpers.h" | |
11 #include "content/public/browser/browser_thread.h" | |
12 | |
13 namespace content { | |
14 class BrowserContext; | |
15 class StreamRegistry; | |
16 struct StreamContextDeleter; | |
17 | |
18 // A context class that keeps track of StreamRegistry used by the chrome. | |
19 // There is an instance associated with each BrowserContext. There could be | |
20 // multiple URLRequestContexts in the same browser context that refers to the | |
21 // same instance. | |
22 // | |
23 // All methods, except the ctor, are expected to be called on | |
24 // the IO thread (unless specifically called out in doc comments). | |
25 class StreamContext | |
26 : public base::RefCountedThreadSafe<StreamContext, | |
27 StreamContextDeleter> { | |
28 public: | |
29 StreamContext(); | |
30 | |
31 static StreamContext* GetFor(BrowserContext* browser_context); | |
32 | |
33 void InitializeOnIOThread(); | |
34 | |
35 StreamRegistry* registry() const { return registry_.get(); } | |
36 | |
37 protected: | |
38 virtual ~StreamContext(); | |
39 | |
40 private: | |
41 friend class base::DeleteHelper<StreamContext>; | |
42 friend class base::RefCountedThreadSafe<StreamContext, | |
43 StreamContextDeleter>; | |
44 friend struct StreamContextDeleter; | |
45 | |
46 void DeleteOnCorrectThread() const; | |
47 | |
48 scoped_ptr<StreamRegistry> registry_; | |
49 }; | |
50 | |
51 struct StreamContextDeleter { | |
52 static void Destruct(const StreamContext* context) { | |
53 context->DeleteOnCorrectThread(); | |
54 } | |
55 }; | |
56 | |
57 } // namespace content | |
58 | |
59 #endif // CONTENT_BROWSER_STREAMS_STREAM_CONTEXT_H_ | |
60 | |
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