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.ambari.server.logging;
  
  import java.util.Map;
  import java.util.concurrent.locks.Lock;
  
  /**
   * Interface for lock implementations that should be profiled and need
   * the assistance of LockProfileDelegate to achieve it.
   */
  interface ProfiledLock extends Lock {
  
    /**
     * @return true if the lock is already held by the current thread
     */
    boolean isHeldByCurrentThread();
  
    /**
     * @return time spent waiting for the lock (in milliseconds) by thread name
     */
    Map<String, Long> getTimeSpentWaitingForLock();
  
    /**
     * @return time spent holding the lock (in milliseconds) by thread name
     */
    Map<String, Long> getTimeSpentLocked();
  
    /**
     * @return the number of times the lock was taken by thread name
     */
    Map<String, Integer> getLockCount();
  
    String getLabel();
  }
  