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// 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 SYNC_INTERNAL_API_PUBLIC_BASE_CANCELATION_OBSERVER_H_
#define SYNC_INTERNAL_API_PUBLIC_BASE_CANCELATION_OBSERVER_H_
#include "sync/base/sync_export.h"
namespace syncer {
// Interface for classes that handle signals from the CancelationSignal.
class SYNC_EXPORT 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 // SYNC_INTERNAL_API_PUBLIC_BASE_CANCELATION_OBSERVER_H_
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