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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 CachedMetadataHandler_h | 5 #ifndef CachedMetadataHandler_h |
6 #define CachedMetadataHandler_h | 6 #define CachedMetadataHandler_h |
7 | 7 |
8 #include "platform/heap/Handle.h" | 8 #include "platform/heap/Handle.h" |
9 #include "wtf/Forward.h" | 9 #include "wtf/Forward.h" |
| 10 #include <stdint.h> |
10 | 11 |
11 namespace blink { | 12 namespace blink { |
12 | 13 |
13 class CachedMetadata; | 14 class CachedMetadata; |
14 | 15 |
15 // Handler class for caching operations. | 16 // Handler class for caching operations. |
16 class CachedMetadataHandler : public GarbageCollectedFinalized<CachedMetadataHan
dler> { | 17 class CachedMetadataHandler : public GarbageCollectedFinalized<CachedMetadataHan
dler> { |
17 public: | 18 public: |
18 enum CacheType { | 19 enum CacheType { |
19 SendToPlatform, // send cache data to blink::Platform::cacheMetadata | 20 SendToPlatform, // send cache data to blink::Platform::cacheMetadata |
20 CacheLocally // cache only in Resource's member variables | 21 CacheLocally // cache only in Resource's member variables |
21 }; | 22 }; |
22 virtual ~CachedMetadataHandler() { } | 23 virtual ~CachedMetadataHandler() { } |
23 DEFINE_INLINE_VIRTUAL_TRACE() { } | 24 DEFINE_INLINE_VIRTUAL_TRACE() { } |
24 // Caches the given metadata in association with this resource and suggests | 25 // Caches the given metadata in association with this resource and suggests |
25 // that the platform persist it. The dataTypeID is a pseudo-randomly chosen | 26 // that the platform persist it. The dataTypeID is a pseudo-randomly chosen |
26 // identifier that is used to distinguish data generated by the caller. | 27 // identifier that is used to distinguish data generated by the caller. |
27 virtual void setCachedMetadata(unsigned dataTypeID, const char*, size_t, Cac
heType = SendToPlatform) = 0; | 28 virtual void setCachedMetadata(uint32_t dataTypeID, const char*, size_t, Cac
heType = SendToPlatform) = 0; |
28 // Reset existing metadata, to allow setting new data. | 29 // Reset existing metadata, to allow setting new data. |
29 virtual void clearCachedMetadata(CacheType = CacheLocally) = 0; | 30 virtual void clearCachedMetadata(CacheType = CacheLocally) = 0; |
30 // Returns cached metadata of the given type associated with this resource. | 31 // Returns cached metadata of the given type associated with this resource. |
31 // This cached metadata can be pruned at any time. | 32 // This cached metadata can be pruned at any time. |
32 virtual PassRefPtr<CachedMetadata> cachedMetadata(unsigned dataTypeID) const
= 0; | 33 virtual PassRefPtr<CachedMetadata> cachedMetadata(uint32_t dataTypeID) const
= 0; |
33 // Returns the encoding to which the cache is specific. | 34 // Returns the encoding to which the cache is specific. |
34 virtual String encoding() const = 0; | 35 virtual String encoding() const = 0; |
35 | 36 |
36 protected: | 37 protected: |
37 CachedMetadataHandler() { } | 38 CachedMetadataHandler() { } |
38 }; | 39 }; |
39 } // namespace blink | 40 } // namespace blink |
40 | 41 |
41 #endif // CachedMetadataHandler_h | 42 #endif // CachedMetadataHandler_h |
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