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 com.alibaba.jstorm.task.acker;
  
  import com.alibaba.jstorm.utils.JStormUtils;
  
  public class AckObject {
      public long val = 0L;
      public Integer spout_task = null;
      public boolean failed = false;
  
      // val xor value
      public void update_ack(Object value) {
          synchronized (this) {
              val = JStormUtils.bit_xor(val, value);
          }
      }
  }
  