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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 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 SYNC_INTERNAL_API_PUBLIC_BASE_CANCELATION_OBSERVER_H_ | 5 #ifndef COMPONENTS_SYNC_BASE_CANCELATION_OBSERVER_H_ |
| 6 #define SYNC_INTERNAL_API_PUBLIC_BASE_CANCELATION_OBSERVER_H_ | 6 #define COMPONENTS_SYNC_BASE_CANCELATION_OBSERVER_H_ |
| 7 | 7 |
| 8 #include "sync/base/sync_export.h" | 8 #include "components/sync/base/sync_export.h" |
| 9 | 9 |
| 10 namespace syncer { | 10 namespace syncer { |
| 11 | 11 |
| 12 // Interface for classes that handle signals from the CancelationSignal. | 12 // Interface for classes that handle signals from the CancelationSignal. |
| 13 class SYNC_EXPORT CancelationObserver { | 13 class SYNC_EXPORT CancelationObserver { |
| 14 public: | 14 public: |
| 15 CancelationObserver(); | 15 CancelationObserver(); |
| 16 virtual ~CancelationObserver() = 0; | 16 virtual ~CancelationObserver() = 0; |
| 17 | 17 |
| 18 // This may be called from a foreign thread while the CancelationSignal's lock | 18 // This may be called from a foreign thread while the CancelationSignal's lock |
| 19 // is held. The callee should avoid performing slow or blocking operations. | 19 // is held. The callee should avoid performing slow or blocking operations. |
| 20 virtual void OnSignalReceived() = 0; | 20 virtual void OnSignalReceived() = 0; |
| 21 }; | 21 }; |
| 22 | 22 |
| 23 } // namespace syncer | 23 } // namespace syncer |
| 24 | 24 |
| 25 #endif // SYNC_INTERNAL_API_PUBLIC_BASE_CANCELATION_OBSERVER_H_ | 25 #endif // COMPONENTS_SYNC_BASE_CANCELATION_OBSERVER_H_ |
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