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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_ACTIVE_BLOB_REGISTRY_H_ | 5 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_ACTIVE_BLOB_REGISTRY_H_ |
6 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_ACTIVE_BLOB_REGISTRY_H_ | 6 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_ACTIVE_BLOB_REGISTRY_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <set> | 9 #include <set> |
10 #include <utility> | 10 #include <utility> |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
12 #include "base/files/file_path.h" | 12 #include "base/files/file_path.h" |
13 #include "base/memory/weak_ptr.h" | 13 #include "base/memory/weak_ptr.h" |
14 #include "content/common/content_export.h" | 14 #include "content/common/content_export.h" |
15 #include "webkit/common/blob/shareable_file_reference.h" | 15 #include "storage/common/blob/shareable_file_reference.h" |
16 | 16 |
17 namespace content { | 17 namespace content { |
18 | 18 |
19 class IndexedDBBackingStore; | 19 class IndexedDBBackingStore; |
20 | 20 |
21 class CONTENT_EXPORT IndexedDBActiveBlobRegistry { | 21 class CONTENT_EXPORT IndexedDBActiveBlobRegistry { |
22 public: | 22 public: |
23 explicit IndexedDBActiveBlobRegistry(IndexedDBBackingStore* backing_store); | 23 explicit IndexedDBActiveBlobRegistry(IndexedDBBackingStore* backing_store); |
24 ~IndexedDBActiveBlobRegistry(); | 24 ~IndexedDBActiveBlobRegistry(); |
25 | 25 |
26 // Most methods of this class, and the closure returned by | 26 // Most methods of this class, and the closure returned by |
27 // GetAddBlobRefCallback, should only be called on the backing_store's task | 27 // GetAddBlobRefCallback, should only be called on the backing_store's task |
28 // runner. The exception is the closure returned by GetFinalReleaseCallback, | 28 // runner. The exception is the closure returned by GetFinalReleaseCallback, |
29 // which just calls ReleaseBlobRefThreadSafe. | 29 // which just calls ReleaseBlobRefThreadSafe. |
30 | 30 |
31 // Use DatabaseMetaDataKey::AllBlobsKey for "the whole database". | 31 // Use DatabaseMetaDataKey::AllBlobsKey for "the whole database". |
32 bool MarkDeletedCheckIfUsed(int64 database_id, int64 blob_key); | 32 bool MarkDeletedCheckIfUsed(int64 database_id, int64 blob_key); |
33 | 33 |
34 webkit_blob::ShareableFileReference::FinalReleaseCallback | 34 storage::ShareableFileReference::FinalReleaseCallback GetFinalReleaseCallback( |
35 GetFinalReleaseCallback(int64 database_id, int64 blob_key); | 35 int64 database_id, |
| 36 int64 blob_key); |
36 // This closure holds a raw pointer to the IndexedDBActiveBlobRegistry, | 37 // This closure holds a raw pointer to the IndexedDBActiveBlobRegistry, |
37 // and may not be called after it is deleted. | 38 // and may not be called after it is deleted. |
38 base::Closure GetAddBlobRefCallback(int64 database_id, int64 blob_key); | 39 base::Closure GetAddBlobRefCallback(int64 database_id, int64 blob_key); |
39 // Call this to force the registry to drop its use counts, permitting the | 40 // Call this to force the registry to drop its use counts, permitting the |
40 // factory to drop any blob-related refcount for the backing store. | 41 // factory to drop any blob-related refcount for the backing store. |
41 // This will also turn any outstanding callbacks into no-ops. | 42 // This will also turn any outstanding callbacks into no-ops. |
42 void ForceShutdown(); | 43 void ForceShutdown(); |
43 | 44 |
44 private: | 45 private: |
45 void AddBlobRef(int64 database_id, int64 blob_key); | 46 void AddBlobRef(int64 database_id, int64 blob_key); |
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65 // backing_store_ owns us, so we'll stay alive as long as we're needed. | 66 // backing_store_ owns us, so we'll stay alive as long as we're needed. |
66 IndexedDBBackingStore* backing_store_; | 67 IndexedDBBackingStore* backing_store_; |
67 base::WeakPtrFactory<IndexedDBActiveBlobRegistry> weak_factory_; | 68 base::WeakPtrFactory<IndexedDBActiveBlobRegistry> weak_factory_; |
68 | 69 |
69 DISALLOW_COPY_AND_ASSIGN(IndexedDBActiveBlobRegistry); | 70 DISALLOW_COPY_AND_ASSIGN(IndexedDBActiveBlobRegistry); |
70 }; | 71 }; |
71 | 72 |
72 } // namespace content | 73 } // namespace content |
73 | 74 |
74 #endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_ACTIVE_BLOB_REGISTRY_H_ | 75 #endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_ACTIVE_BLOB_REGISTRY_H_ |
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