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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 STORAGE_BROWSER_BLOB_INTERNAL_BLOB_DATA_H_ | 5 #ifndef STORAGE_BROWSER_BLOB_INTERNAL_BLOB_DATA_H_ |
6 #define STORAGE_BROWSER_BLOB_INTERNAL_BLOB_DATA_H_ | 6 #define STORAGE_BROWSER_BLOB_INTERNAL_BLOB_DATA_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
11 #include <string> | 11 #include <string> |
12 #include <vector> | 12 #include <vector> |
13 | 13 |
14 #include "base/macros.h" | 14 #include "base/macros.h" |
15 #include "base/memory/ref_counted.h" | 15 #include "base/memory/ref_counted.h" |
16 #include "storage/browser/blob/shareable_blob_data_item.h" | 16 #include "storage/browser/storage_browser_export.h" |
17 | 17 |
18 namespace storage { | 18 namespace storage { |
| 19 class ShareableBlobDataItem; |
19 class ViewBlobInternalsJob; | 20 class ViewBlobInternalsJob; |
20 | 21 |
21 // This class represents a blob in the BlobStorageContext. It is constructed | 22 // This class represents a blob. We export this only for unit tests. |
22 // using the internal Builder class. | 23 class STORAGE_EXPORT InternalBlobData { |
23 class InternalBlobData { | |
24 public: | 24 public: |
25 ~InternalBlobData(); | 25 ~InternalBlobData(); |
| 26 InternalBlobData(); |
26 | 27 |
27 protected: | 28 // Appends the given shared blob data item to this object. We add |my_uuid| |
28 friend class BlobStorageContext; | 29 // to the shareable item's uuid set. |
29 friend class BlobStorageRegistry; | 30 void AppendSharedBlobItem(const std::string& my_uuid, |
30 friend class ViewBlobInternalsJob; | 31 scoped_refptr<ShareableBlobDataItem> item); |
31 | 32 |
32 // Removes the given blob uuid from the internal ShareableBlobDataItems. | 33 // Removes the given blob uuid from the internal ShareableBlobDataItems. |
33 // This is called when this blob is being destroyed. | 34 // This is called when this blob is being destroyed. |
34 void RemoveBlobFromShareableItems(const std::string& blob_uuid); | 35 void RemoveBlobFromShareableItems(const std::string& blob_uuid); |
35 | 36 |
36 const std::vector<scoped_refptr<ShareableBlobDataItem>>& items() const; | 37 const std::vector<scoped_refptr<ShareableBlobDataItem>>& items() const; |
| 38 const std::vector<uint64_t>& offsets() const { return offsets_; } |
37 | 39 |
38 // Gets the memory used by this blob that is not shared by other blobs. This | 40 // Gets the memory used by this blob that is not shared by other blobs. This |
39 // also doesn't count duplicate items. | 41 // also doesn't count duplicate items. |
40 size_t GetUnsharedMemoryUsage() const; | 42 size_t GetUnsharedMemoryUsage() const; |
41 | 43 |
42 // Gets the memory used by this blob. Total memory includes memory of items | 44 // Total size of this blob in bytes. |
43 // possibly shared with other blobs, or items that appear multiple times in | 45 uint64_t total_size() const { return size_; }; |
44 // this blob. Unshared memory is memory used by this blob that is not shared | |
45 // by other blobs. | |
46 void GetMemoryUsage(size_t* total_memory, size_t* unshared_memory); | |
47 | 46 |
48 private: | 47 private: |
49 friend class Builder; | 48 friend class BlobStorageContext; |
50 InternalBlobData(); | |
51 | 49 |
52 std::string content_type_; | |
53 std::string content_disposition_; | |
54 std::vector<scoped_refptr<ShareableBlobDataItem>> items_; | 50 std::vector<scoped_refptr<ShareableBlobDataItem>> items_; |
55 | 51 |
56 class Builder { | 52 // Size in bytes. If we're a single file then this can be uint64_max. |
57 public: | 53 uint64_t size_ = 0; |
58 Builder(); | |
59 ~Builder(); | |
60 | 54 |
61 void AppendSharedBlobItem(scoped_refptr<ShareableBlobDataItem> item); | 55 // Only populated if len(items_) > 1. Used for binary search. |
62 | 56 // Since the offset of the first item is always 0, we exclude this. |
63 // Gets the memory used by this builder that is not shared with other blobs. | 57 std::vector<uint64_t> offsets_; |
64 size_t GetNonsharedMemoryUsage() const; | |
65 | |
66 // Removes the given blob uuid from the internal ShareableBlobDataItems. | |
67 // This is called on destruction of the blob if we're still building it. | |
68 void RemoveBlobFromShareableItems(const std::string& blob_uuid); | |
69 | |
70 // The builder is invalid after calling this method. | |
71 std::unique_ptr<::storage::InternalBlobData> Build(); | |
72 | |
73 private: | |
74 std::unique_ptr<::storage::InternalBlobData> data_; | |
75 | |
76 DISALLOW_COPY_AND_ASSIGN(Builder); | |
77 }; | |
78 | 58 |
79 DISALLOW_COPY_AND_ASSIGN(InternalBlobData); | 59 DISALLOW_COPY_AND_ASSIGN(InternalBlobData); |
80 }; | 60 }; |
81 | 61 |
82 } // namespace storage | 62 } // namespace storage |
83 #endif // STORAGE_BROWSER_BLOB_INTERNAL_BLOB_DATA_H_ | 63 #endif // STORAGE_BROWSER_BLOB_INTERNAL_BLOB_DATA_H_ |
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