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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.concurrent;
/**
* This interface wraps access to some timer that can be used to measure elapsed time, in milliseconds. This
* abstraction allows for unit testing the behavior of time-based constructs.
*
* @author Simon Thoresen Hult
*/
public interface Timer {
/**
* Returns the current value of some arbitrary timer, in milliseconds. This method can only be used to measure
* elapsed time and is not related to any other notion of system or wall-clock time.
*
* @return The current value of the timer, in milliseconds.
*/
long milliTime();
}
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