| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef COMPONENTS_SYNC_BASE_CANCELATION_OBSERVER_H_ |
| #define COMPONENTS_SYNC_BASE_CANCELATION_OBSERVER_H_ |
| |
| namespace syncer { |
| |
| // Interface for classes that handle signals from the CancelationSignal. |
| class CancelationObserver { |
| public: |
| CancelationObserver(); |
| virtual ~CancelationObserver() = 0; |
| |
| // This may be called from a foreign thread while the CancelationSignal's lock |
| // is held. The callee should avoid performing slow or blocking operations. |
| virtual void OnSignalReceived() = 0; |
| }; |
| |
| } // namespace syncer |
| |
| #endif // COMPONENTS_SYNC_BASE_CANCELATION_OBSERVER_H_ |