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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 WEBKIT_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ | 5 #ifndef WEBKIT_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ |
6 #define WEBKIT_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ | 6 #define WEBKIT_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/nullable_string16.h" | 12 #include "base/nullable_string16.h" |
13 #include "googleurl/src/gurl.h" | 13 #include "googleurl/src/gurl.h" |
14 | 14 |
15 namespace dom_storage { | 15 namespace dom_storage { |
16 | 16 |
17 class DomStorageMap; | 17 class DomStorageMap; |
18 class DomStorageProxy; | 18 class DomStorageProxy; |
19 | 19 |
20 // Unlike the other classes in the dom_storage library, this one is intended | 20 // Unlike the other classes in the dom_storage library, this one is intended |
21 // for use in renderer processes. It maintains a complete cach of the an | 21 // for use in renderer processes. It maintains a complete cache of the |
22 // origin's Map of key/value pairs for fast access. The cache is primed on | 22 // origin's Map of key/value pairs for fast access. The cache is primed on |
23 // first access and changes are written to the backend thru the |proxy|. | 23 // first access and changes are written to the backend thru the |proxy|. |
24 // Mutations originating in other processes are applied to the cache via | 24 // Mutations originating in other processes are applied to the cache via |
25 // the ApplyMutation method. | 25 // the ApplyMutation method. |
26 class DomStorageCachedArea : public base::RefCounted<DomStorageCachedArea> { | 26 class DomStorageCachedArea : public base::RefCounted<DomStorageCachedArea> { |
27 public: | 27 public: |
28 DomStorageCachedArea(int64 namespace_id, const GURL& origin, | 28 DomStorageCachedArea(int64 namespace_id, const GURL& origin, |
29 DomStorageProxy* proxy); | 29 DomStorageProxy* proxy); |
30 | 30 |
31 int64 namespace_id() const { return namespace_id_; } | 31 int64 namespace_id() const { return namespace_id_; } |
32 const GURL& origin() const { return origin_; } | 32 const GURL& origin() const { return origin_; } |
33 | 33 |
34 unsigned GetLength(int connection_id); | 34 unsigned GetLength(int connection_id); |
35 NullableString16 GetKey(int connection_id, unsigned index); | 35 NullableString16 GetKey(int connection_id, unsigned index); |
36 NullableString16 GetItem(int connection_id, const string16& key); | 36 NullableString16 GetItem(int connection_id, const string16& key); |
37 bool SetItem(int connection_id, const string16& key, const string16& value, | 37 bool SetItem(int connection_id, const string16& key, const string16& value, |
38 const GURL& page_url); | 38 const GURL& page_url); |
39 void RemoveItem(int connection_id, const string16& key, | 39 void RemoveItem(int connection_id, const string16& key, |
40 const GURL& page_url); | 40 const GURL& page_url); |
41 void Clear(int connection_id, const GURL& page_url); | 41 void Clear(int connection_id, const GURL& page_url); |
42 | 42 |
43 void ApplyMutation(const NullableString16& key, | 43 void ApplyMutation(const NullableString16& key, |
44 const NullableString16& new_value); | 44 const NullableString16& new_value); |
45 | 45 |
| 46 size_t MemoryBytesUsedByCache() const; |
| 47 |
46 private: | 48 private: |
47 friend class DomStorageCachedAreaTest; | 49 friend class DomStorageCachedAreaTest; |
48 friend class base::RefCounted<DomStorageCachedArea>; | 50 friend class base::RefCounted<DomStorageCachedArea>; |
49 ~DomStorageCachedArea(); | 51 ~DomStorageCachedArea(); |
50 | 52 |
51 // Primes the cache, loading all values for the area. | 53 // Primes the cache, loading all values for the area. |
52 void Prime(int connection_id); | 54 void Prime(int connection_id); |
53 void PrimeIfNeeded(int connection_id) { | 55 void PrimeIfNeeded(int connection_id) { |
54 if (!map_) | 56 if (!map_) |
55 Prime(connection_id); | 57 Prime(connection_id); |
(...skipping 21 matching lines...) Expand all Loading... |
77 int64 namespace_id_; | 79 int64 namespace_id_; |
78 GURL origin_; | 80 GURL origin_; |
79 scoped_refptr<DomStorageMap> map_; | 81 scoped_refptr<DomStorageMap> map_; |
80 scoped_refptr<DomStorageProxy> proxy_; | 82 scoped_refptr<DomStorageProxy> proxy_; |
81 base::WeakPtrFactory<DomStorageCachedArea> weak_factory_; | 83 base::WeakPtrFactory<DomStorageCachedArea> weak_factory_; |
82 }; | 84 }; |
83 | 85 |
84 } // namespace dom_storage | 86 } // namespace dom_storage |
85 | 87 |
86 #endif // WEBKIT_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ | 88 #endif // WEBKIT_DOM_STORAGE_DOM_STORAGE_CACHED_AREA_H_ |
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