OLD | NEW |
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ | 5 #ifndef CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ |
6 #define CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ | 6 #define CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 | 9 |
10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
11 #include "base/memory/weak_ptr.h" | 11 #include "base/memory/weak_ptr.h" |
12 #include "base/strings/nullable_string16.h" | 12 #include "base/strings/nullable_string16.h" |
13 #include "content/common/content_export.h" | 13 #include "content/common/content_export.h" |
14 #include "url/gurl.h" | 14 #include "url/gurl.h" |
15 | 15 |
16 namespace dom_storage { | |
17 class DomStorageMap; | |
18 } | |
19 | |
20 namespace content { | 16 namespace content { |
21 | 17 |
22 class DomStorageProxy; | 18 class DOMStorageMap; |
| 19 class DOMStorageProxy; |
23 | 20 |
24 // Unlike the other classes in the dom_storage library, this one is intended | 21 // Unlike the other classes in the dom_storage library, this one is intended |
25 // for use in renderer processes. It maintains a complete cache of the | 22 // for use in renderer processes. It maintains a complete cache of the |
26 // origin's Map of key/value pairs for fast access. The cache is primed on | 23 // origin's Map of key/value pairs for fast access. The cache is primed on |
27 // first access and changes are written to the backend thru the |proxy|. | 24 // first access and changes are written to the backend thru the |proxy|. |
28 // Mutations originating in other processes are applied to the cache via | 25 // Mutations originating in other processes are applied to the cache via |
29 // the ApplyMutation method. | 26 // the ApplyMutation method. |
30 class CONTENT_EXPORT DomStorageCachedArea | 27 class CONTENT_EXPORT DOMStorageCachedArea |
31 : public base::RefCounted<DomStorageCachedArea> { | 28 : public base::RefCounted<DOMStorageCachedArea> { |
32 public: | 29 public: |
33 DomStorageCachedArea(int64 namespace_id, | 30 DOMStorageCachedArea(int64 namespace_id, |
34 const GURL& origin, | 31 const GURL& origin, |
35 DomStorageProxy* proxy); | 32 DOMStorageProxy* proxy); |
36 | 33 |
37 int64 namespace_id() const { return namespace_id_; } | 34 int64 namespace_id() const { return namespace_id_; } |
38 const GURL& origin() const { return origin_; } | 35 const GURL& origin() const { return origin_; } |
39 | 36 |
40 unsigned GetLength(int connection_id); | 37 unsigned GetLength(int connection_id); |
41 base::NullableString16 GetKey(int connection_id, unsigned index); | 38 base::NullableString16 GetKey(int connection_id, unsigned index); |
42 base::NullableString16 GetItem(int connection_id, const base::string16& key); | 39 base::NullableString16 GetItem(int connection_id, const base::string16& key); |
43 bool SetItem(int connection_id, | 40 bool SetItem(int connection_id, |
44 const base::string16& key, | 41 const base::string16& key, |
45 const base::string16& value, | 42 const base::string16& value, |
46 const GURL& page_url); | 43 const GURL& page_url); |
47 void RemoveItem(int connection_id, | 44 void RemoveItem(int connection_id, |
48 const base::string16& key, | 45 const base::string16& key, |
49 const GURL& page_url); | 46 const GURL& page_url); |
50 void Clear(int connection_id, const GURL& page_url); | 47 void Clear(int connection_id, const GURL& page_url); |
51 | 48 |
52 void ApplyMutation(const base::NullableString16& key, | 49 void ApplyMutation(const base::NullableString16& key, |
53 const base::NullableString16& new_value); | 50 const base::NullableString16& new_value); |
54 | 51 |
55 size_t MemoryBytesUsedByCache() const; | 52 size_t MemoryBytesUsedByCache() const; |
56 | 53 |
57 private: | 54 private: |
58 friend class DomStorageCachedAreaTest; | 55 friend class DOMStorageCachedAreaTest; |
59 friend class base::RefCounted<DomStorageCachedArea>; | 56 friend class base::RefCounted<DOMStorageCachedArea>; |
60 ~DomStorageCachedArea(); | 57 ~DOMStorageCachedArea(); |
61 | 58 |
62 // Primes the cache, loading all values for the area. | 59 // Primes the cache, loading all values for the area. |
63 void Prime(int connection_id); | 60 void Prime(int connection_id); |
64 void PrimeIfNeeded(int connection_id) { | 61 void PrimeIfNeeded(int connection_id) { |
65 if (!map_.get()) | 62 if (!map_.get()) |
66 Prime(connection_id); | 63 Prime(connection_id); |
67 } | 64 } |
68 | 65 |
69 // Resets the object back to its newly constructed state. | 66 // Resets the object back to its newly constructed state. |
70 void Reset(); | 67 void Reset(); |
71 | 68 |
72 // Async completion callbacks for proxied operations. | 69 // Async completion callbacks for proxied operations. |
73 // These are used to maintain cache consistency by preventing | 70 // These are used to maintain cache consistency by preventing |
74 // mutation events from other processes from overwriting local | 71 // mutation events from other processes from overwriting local |
75 // changes made after the mutation. | 72 // changes made after the mutation. |
76 void OnLoadComplete(bool success); | 73 void OnLoadComplete(bool success); |
77 void OnSetItemComplete(const base::string16& key, bool success); | 74 void OnSetItemComplete(const base::string16& key, bool success); |
78 void OnClearComplete(bool success); | 75 void OnClearComplete(bool success); |
79 void OnRemoveItemComplete(const base::string16& key, bool success); | 76 void OnRemoveItemComplete(const base::string16& key, bool success); |
80 | 77 |
81 bool should_ignore_key_mutation(const base::string16& key) const { | 78 bool should_ignore_key_mutation(const base::string16& key) const { |
82 return ignore_key_mutations_.find(key) != ignore_key_mutations_.end(); | 79 return ignore_key_mutations_.find(key) != ignore_key_mutations_.end(); |
83 } | 80 } |
84 | 81 |
85 bool ignore_all_mutations_; | 82 bool ignore_all_mutations_; |
86 std::map<base::string16, int> ignore_key_mutations_; | 83 std::map<base::string16, int> ignore_key_mutations_; |
87 | 84 |
88 int64 namespace_id_; | 85 int64 namespace_id_; |
89 GURL origin_; | 86 GURL origin_; |
90 scoped_refptr<dom_storage::DomStorageMap> map_; | 87 scoped_refptr<DOMStorageMap> map_; |
91 scoped_refptr<DomStorageProxy> proxy_; | 88 scoped_refptr<DOMStorageProxy> proxy_; |
92 base::WeakPtrFactory<DomStorageCachedArea> weak_factory_; | 89 base::WeakPtrFactory<DOMStorageCachedArea> weak_factory_; |
93 }; | 90 }; |
94 | 91 |
95 } // namespace content | 92 } // namespace content |
96 | 93 |
97 #endif // CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ | 94 #endif // CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ |
OLD | NEW |