content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.heartbeat;
  
  /**
   * A policy to calculate the next interval to sleep.
   */
  public interface SleepIntervalSupplier {
    /**
     * Gets the next interval for sleeping.
     *
     * @param previousTickedMs previous ticked time stamp in millisecond
     * @param nowTimeStampMillis current time stamp in millisecond
     * @return the interval to sleep starting from now before next time the timer triggers
     */
    long getNextInterval(long previousTickedMs, long nowTimeStampMillis);
  
    /**
     * Gets the run limit from previous ticked.
     *
     * @param previousTickedMs previous ticked time stamp in millisecond
     * @return the run limit
     */
    long getRunLimit(long previousTickedMs);
  }
  