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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
namespace vespalib {
/**
* An syncable is an interface that waits for something to complete.
**/
class Syncable
{
public:
/**
* Synchronize with this executor. This function will block until
* all previously accepted tasks have been executed. This function
* uses the event barrier algorithm (tm).
*
* @return this object; for chaining
**/
virtual Syncable &sync() = 0;
virtual ~Syncable() {}
};
} // namespace vespalib
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