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.activemq.artemis.utils.critical;
  
  /**
   * A Critical component enters and leaves a critical state. You update a long every time you enter a critical path you
   * update a different long with a System.nanoTime every time you leave that path.
   * <p>
   * If the enterCritical &gt; leaveCritical at any point, then you need to measure the timeout. if the system stops
   * responding, then you have something irresponsive at the system.
   */
  public interface CriticalComponent {
  
     CriticalAnalyzer getCriticalAnalyzer();
  
     CriticalCloseable measureCritical(int path);
  
     /**
      * Check if the component is expired at a given timeout.. on any of its paths.
      *
      * @param timeout - the timeout to check if the component is expired
      * @param reset   - true to reset the component timer if it is expired
      * @return -1 if it's ok, or the number of the path it failed
      */
     boolean checkExpiration(long timeout, boolean reset);
  }
  