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/*
 * Copyright 2017 PingCAP, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.pingcap.tikv.util;

import java.util.concurrent.TimeUnit;

public final class Timer {
  private long startTime;

  public Timer() {
    reset();
  }

  public long stop(TimeUnit tu) {
    return tu.convert(System.nanoTime() - startTime, TimeUnit.NANOSECONDS);
  }

  public void reset() {
    startTime = System.nanoTime();
  }
}