OLD | NEW |
| (Empty) |
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 WEBKIT_BLOB_BLOB_DATA_HANDLE_H_ | |
6 #define WEBKIT_BLOB_BLOB_DATA_HANDLE_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/memory/ref_counted.h" | |
11 #include "base/memory/weak_ptr.h" | |
12 #include "base/supports_user_data.h" | |
13 #include "webkit/storage/webkit_storage_export.h" | |
14 | |
15 namespace base { | |
16 class SequencedTaskRunner; | |
17 } | |
18 | |
19 namespace webkit_blob { | |
20 | |
21 class BlobData; | |
22 class BlobStorageContext; | |
23 | |
24 // A scoper object for use in chrome's main browser process, ensures | |
25 // the underlying BlobData and its uuid remain in BlobStorageContext's | |
26 // collection for the duration. This object has delete semantics and | |
27 // maybe deleted on any thread. | |
28 class WEBKIT_STORAGE_EXPORT BlobDataHandle | |
29 : public base::SupportsUserData::Data { | |
30 public: | |
31 virtual ~BlobDataHandle(); // Maybe be deleted on any thread. | |
32 BlobData* data() const; // May only be accessed on the IO thread. | |
33 | |
34 private: | |
35 friend class BlobStorageContext; | |
36 BlobDataHandle(BlobData* blob_data, BlobStorageContext* context, | |
37 base::SequencedTaskRunner* task_runner); | |
38 | |
39 static void DeleteHelper( | |
40 base::WeakPtr<BlobStorageContext> context, | |
41 BlobData* blob_data); | |
42 | |
43 BlobData* blob_data_; // Intentionally a raw ptr to a non-thread-safe ref. | |
44 base::WeakPtr<BlobStorageContext> context_; | |
45 scoped_refptr<base::SequencedTaskRunner> io_task_runner_; | |
46 }; | |
47 | |
48 } // namespace webkit_blob | |
49 | |
50 #endif // WEBKIT_BLOB_BLOB_DATA_HANDLE_H_ | |
OLD | NEW |