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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_STORAGE_CONTEXT_H_ | 5 #ifndef WEBKIT_BROWSER_BLOB_BLOB_STORAGE_CONTEXT_H_ |
6 #define WEBKIT_BROWSER_BLOB_BLOB_STORAGE_CONTEXT_H_ | 6 #define WEBKIT_BROWSER_BLOB_BLOB_STORAGE_CONTEXT_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
12 #include "base/memory/scoped_ptr.h" | 12 #include "base/memory/scoped_ptr.h" |
13 #include "base/memory/weak_ptr.h" | 13 #include "base/memory/weak_ptr.h" |
14 #include "webkit/browser/blob/blob_data_handle.h" | 14 #include "storage/browser/blob/blob_data_handle.h" |
15 #include "webkit/browser/webkit_storage_browser_export.h" | 15 #include "storage/common/storage_export.h" |
16 #include "webkit/common/blob/blob_data.h" | 16 #include "storage/common/blob/blob_data.h" |
17 | 17 |
18 class GURL; | 18 class GURL; |
19 | 19 |
20 namespace base { | 20 namespace base { |
21 class FilePath; | 21 class FilePath; |
22 class Time; | 22 class Time; |
23 } | 23 } |
24 | 24 |
25 namespace content { | 25 namespace content { |
26 class BlobStorageHost; | 26 class BlobStorageHost; |
27 } | 27 } |
28 | 28 |
29 namespace webkit_blob { | 29 namespace storage { |
30 | 30 |
31 class BlobDataHandle; | 31 class BlobDataHandle; |
32 | 32 |
33 // This class handles the logistics of blob Storage within the browser process, | 33 // This class handles the logistics of blob Storage within the browser process, |
34 // and maintains a mapping from blob uuid to the data. The class is single | 34 // and maintains a mapping from blob uuid to the data. The class is single |
35 // threaded and should only be used on the IO thread. | 35 // threaded and should only be used on the IO thread. |
36 // In chromium, there is one instance per profile. | 36 // In chromium, there is one instance per profile. |
37 class WEBKIT_STORAGE_BROWSER_EXPORT BlobStorageContext | 37 class STORAGE_EXPORT BlobStorageContext |
38 : public base::SupportsWeakPtr<BlobStorageContext> { | 38 : public base::SupportsWeakPtr<BlobStorageContext> { |
39 public: | 39 public: |
40 BlobStorageContext(); | 40 BlobStorageContext(); |
41 ~BlobStorageContext(); | 41 ~BlobStorageContext(); |
42 | 42 |
43 scoped_ptr<BlobDataHandle> GetBlobDataFromUUID(const std::string& uuid); | 43 scoped_ptr<BlobDataHandle> GetBlobDataFromUUID(const std::string& uuid); |
44 scoped_ptr<BlobDataHandle> GetBlobDataFromPublicURL(const GURL& url); | 44 scoped_ptr<BlobDataHandle> GetBlobDataFromPublicURL(const GURL& url); |
45 | 45 |
46 // Useful for coining blobs from within the browser process. If the | 46 // Useful for coining blobs from within the browser process. If the |
47 // blob cannot be added due to memory consumption, returns NULL. | 47 // blob cannot be added due to memory consumption, returns NULL. |
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64 struct BlobMapEntry { | 64 struct BlobMapEntry { |
65 int refcount; | 65 int refcount; |
66 int flags; | 66 int flags; |
67 scoped_refptr<BlobData> data; | 67 scoped_refptr<BlobData> data; |
68 | 68 |
69 BlobMapEntry(); | 69 BlobMapEntry(); |
70 BlobMapEntry(int refcount, int flags, BlobData* data); | 70 BlobMapEntry(int refcount, int flags, BlobData* data); |
71 ~BlobMapEntry(); | 71 ~BlobMapEntry(); |
72 }; | 72 }; |
73 | 73 |
74 typedef std::map<std::string, BlobMapEntry> | 74 typedef std::map<std::string, BlobMapEntry> BlobMap; |
75 BlobMap; | |
76 typedef std::map<GURL, std::string> BlobURLMap; | 75 typedef std::map<GURL, std::string> BlobURLMap; |
77 | 76 |
78 void StartBuildingBlob(const std::string& uuid); | 77 void StartBuildingBlob(const std::string& uuid); |
79 void AppendBlobDataItem(const std::string& uuid, | 78 void AppendBlobDataItem(const std::string& uuid, |
80 const BlobData::Item& data_item); | 79 const BlobData::Item& data_item); |
81 void FinishBuildingBlob(const std::string& uuid, const std::string& type); | 80 void FinishBuildingBlob(const std::string& uuid, const std::string& type); |
82 void CancelBuildingBlob(const std::string& uuid); | 81 void CancelBuildingBlob(const std::string& uuid); |
83 void IncrementBlobRefCount(const std::string& uuid); | 82 void IncrementBlobRefCount(const std::string& uuid); |
84 void DecrementBlobRefCount(const std::string& uuid); | 83 void DecrementBlobRefCount(const std::string& uuid); |
85 | 84 |
86 bool ExpandStorageItems(BlobData* target_blob_data, | 85 bool ExpandStorageItems(BlobData* target_blob_data, |
87 BlobData* src_blob_data, | 86 BlobData* src_blob_data, |
88 uint64 offset, | 87 uint64 offset, |
89 uint64 length); | 88 uint64 length); |
90 bool AppendBytesItem(BlobData* target_blob_data, | 89 bool AppendBytesItem(BlobData* target_blob_data, |
91 const char* data, int64 length); | 90 const char* data, |
| 91 int64 length); |
92 void AppendFileItem(BlobData* target_blob_data, | 92 void AppendFileItem(BlobData* target_blob_data, |
93 const base::FilePath& file_path, | 93 const base::FilePath& file_path, |
94 uint64 offset, uint64 length, | 94 uint64 offset, |
| 95 uint64 length, |
95 const base::Time& expected_modification_time); | 96 const base::Time& expected_modification_time); |
96 void AppendFileSystemFileItem( | 97 void AppendFileSystemFileItem(BlobData* target_blob_data, |
97 BlobData* target_blob_data, | 98 const GURL& url, |
98 const GURL& url, uint64 offset, uint64 length, | 99 uint64 offset, |
99 const base::Time& expected_modification_time); | 100 uint64 length, |
| 101 const base::Time& expected_modification_time); |
100 | 102 |
101 bool IsInUse(const std::string& uuid); | 103 bool IsInUse(const std::string& uuid); |
102 bool IsBeingBuilt(const std::string& uuid); | 104 bool IsBeingBuilt(const std::string& uuid); |
103 bool IsUrlRegistered(const GURL& blob_url); | 105 bool IsUrlRegistered(const GURL& blob_url); |
104 | 106 |
105 BlobMap blob_map_; | 107 BlobMap blob_map_; |
106 BlobURLMap public_blob_urls_; | 108 BlobURLMap public_blob_urls_; |
107 | 109 |
108 // Used to keep track of how much memory is being utilized for blob data, | 110 // Used to keep track of how much memory is being utilized for blob data, |
109 // we count only the items of TYPE_DATA which are held in memory and not | 111 // we count only the items of TYPE_DATA which are held in memory and not |
110 // items of TYPE_FILE. | 112 // items of TYPE_FILE. |
111 int64 memory_usage_; | 113 int64 memory_usage_; |
112 | 114 |
113 DISALLOW_COPY_AND_ASSIGN(BlobStorageContext); | 115 DISALLOW_COPY_AND_ASSIGN(BlobStorageContext); |
114 }; | 116 }; |
115 | 117 |
116 } // namespace webkit_blob | 118 } // namespace storage |
117 | 119 |
118 #endif // WEBKIT_BROWSER_BLOB_BLOB_STORAGE_CONTEXT_H_ | 120 #endif // WEBKIT_BROWSER_BLOB_BLOB_STORAGE_CONTEXT_H_ |
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