content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.kafka.server.util.timer;
  
  public interface Timer extends AutoCloseable {
      /**
       * Add a new task to this executor. It will be executed after the task's delay
       * (beginning from the time of submission)
       * @param timerTask the task to add
       */
      void add(TimerTask timerTask);
  
      /**
       * Advance the internal clock, executing any tasks whose expiration has been
       * reached within the duration of the passed timeout.
       * @param timeoutMs the time to advance in milliseconds
       * @return whether or not any tasks were executed
       */
      boolean advanceClock(long timeoutMs) throws InterruptedException;
  
      /**
       * Get the number of tasks pending execution
       * @return the number of tasks
       */
      int size();
  
  }
  