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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 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 | 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 WEBKIT_BROWSER_BLOB_BLOB_DATA_HANDLE_H_ | 5 #ifndef WEBKIT_BROWSER_BLOB_BLOB_DATA_HANDLE_H_ |
6 #define WEBKIT_BROWSER_BLOB_BLOB_DATA_HANDLE_H_ | 6 #define WEBKIT_BROWSER_BLOB_BLOB_DATA_HANDLE_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
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21 class BlobData; | 21 class BlobData; |
22 class BlobStorageContext; | 22 class BlobStorageContext; |
23 | 23 |
24 // A scoper object for use in chrome's main browser process, ensures | 24 // A scoper object for use in chrome's main browser process, ensures |
25 // the underlying BlobData and its uuid remain in BlobStorageContext's | 25 // the underlying BlobData and its uuid remain in BlobStorageContext's |
26 // collection for the duration. This object has delete semantics and | 26 // collection for the duration. This object has delete semantics and |
27 // maybe deleted on any thread. | 27 // maybe deleted on any thread. |
28 class WEBKIT_STORAGE_BROWSER_EXPORT BlobDataHandle | 28 class WEBKIT_STORAGE_BROWSER_EXPORT BlobDataHandle |
29 : public base::SupportsUserData::Data { | 29 : public base::SupportsUserData::Data { |
30 public: | 30 public: |
| 31 BlobDataHandle(const BlobDataHandle& other); // May be copied on any thread. |
31 virtual ~BlobDataHandle(); // Maybe be deleted on any thread. | 32 virtual ~BlobDataHandle(); // Maybe be deleted on any thread. |
32 BlobData* data() const; // May only be accessed on the IO thread. | 33 BlobData* data() const; // May only be accessed on the IO thread. |
33 | 34 |
| 35 std::string uuid() const; // May be accessed on any thread. |
| 36 |
34 private: | 37 private: |
| 38 class BlobDataHandleShared |
| 39 : public base::RefCountedThreadSafe<BlobDataHandleShared> { |
| 40 public: |
| 41 BlobDataHandleShared(BlobData* blob_data, |
| 42 BlobStorageContext* context, |
| 43 base::SequencedTaskRunner* task_runner); |
| 44 |
| 45 BlobData* data() const; |
| 46 const std::string& uuid() const; |
| 47 |
| 48 private: |
| 49 friend class base::DeleteHelper<BlobDataHandleShared>; |
| 50 friend class base::RefCountedThreadSafe<BlobDataHandleShared>; |
| 51 friend class BlobDataHandle; |
| 52 |
| 53 virtual ~BlobDataHandleShared(); |
| 54 |
| 55 scoped_refptr<BlobData> blob_data_; |
| 56 base::WeakPtr<BlobStorageContext> context_; |
| 57 |
| 58 DISALLOW_COPY_AND_ASSIGN(BlobDataHandleShared); |
| 59 }; |
| 60 |
35 friend class BlobStorageContext; | 61 friend class BlobStorageContext; |
36 BlobDataHandle(BlobData* blob_data, BlobStorageContext* context, | 62 BlobDataHandle(BlobData* blob_data, BlobStorageContext* context, |
37 base::SequencedTaskRunner* task_runner); | 63 base::SequencedTaskRunner* task_runner); |
38 | 64 |
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_; | 65 scoped_refptr<base::SequencedTaskRunner> io_task_runner_; |
46 | 66 scoped_refptr<BlobDataHandleShared> shared_; |
47 DISALLOW_COPY_AND_ASSIGN(BlobDataHandle); | |
48 }; | 67 }; |
49 | 68 |
50 } // namespace webkit_blob | 69 } // namespace webkit_blob |
51 | 70 |
52 #endif // WEBKIT_BROWSER_BLOB_BLOB_DATA_HANDLE_H_ | 71 #endif // WEBKIT_BROWSER_BLOB_BLOB_DATA_HANDLE_H_ |
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