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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 SYNC_INTERNAL_API_PUBLIC_BASE_INVALIDATION_INTERFACE_H_ | 5 #ifndef COMPONENTS_SYNC_BASE_INVALIDATION_INTERFACE_H_ |
6 #define SYNC_INTERNAL_API_PUBLIC_BASE_INVALIDATION_INTERFACE_H_ | 6 #define COMPONENTS_SYNC_BASE_INVALIDATION_INTERFACE_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <string> | 10 #include <string> |
11 | 11 |
12 #include "sync/base/sync_export.h" | 12 #include "components/sync/base/sync_export.h" |
13 | 13 |
14 namespace syncer { | 14 namespace syncer { |
15 | 15 |
16 // An interface that wraps sync's interactions with the component that provides | 16 // An interface that wraps sync's interactions with the component that provides |
17 // it with invalidations. | 17 // it with invalidations. |
18 class SYNC_EXPORT InvalidationInterface { | 18 class SYNC_EXPORT InvalidationInterface { |
19 public: | 19 public: |
20 // Orders invalidations based on version number and IsUnknownVersion(). | 20 // Orders invalidations based on version number and IsUnknownVersion(). |
21 static bool LessThanByVersion(const InvalidationInterface& a, | 21 static bool LessThanByVersion(const InvalidationInterface& a, |
22 const InvalidationInterface& b); | 22 const InvalidationInterface& b); |
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46 // This function should be called if a lack of buffer space required that we | 46 // This function should be called if a lack of buffer space required that we |
47 // drop this invalidation. | 47 // drop this invalidation. |
48 // | 48 // |
49 // To indicate recovery from a drop event, the receiver of this invalidation | 49 // To indicate recovery from a drop event, the receiver of this invalidation |
50 // will call Acknowledge() on the most recently dropped invalidation. | 50 // will call Acknowledge() on the most recently dropped invalidation. |
51 virtual void Drop() = 0; | 51 virtual void Drop() = 0; |
52 }; | 52 }; |
53 | 53 |
54 } // namespace syncer | 54 } // namespace syncer |
55 | 55 |
56 #endif // SYNC_INTERNAL_API_PUBLIC_BASE_INVALIDATION_INTERFACE_H_ | 56 #endif // COMPONENTS_SYNC_BASE_INVALIDATION_INTERFACE_H_ |
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