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.cassandra.utils.obs;
  
  import java.io.Closeable;
  import java.io.IOException;
  
  import org.apache.cassandra.io.util.DataOutputPlus;
  import org.apache.cassandra.utils.concurrent.Ref;
  
  public interface IBitSet extends Closeable
  {
      public long capacity();
  
      /**
       * Returns true or false for the specified bit index. The index should be
       * less than the capacity.
       */
      public boolean get(long index);
  
      /**
       * Sets the bit at the specified index. The index should be less than the
       * capacity.
       */
      public void set(long index);
  
      /**
       * clears the bit. The index should be less than the capacity.
       */
      public void clear(long index);
  
      public void serialize(DataOutputPlus out) throws IOException;
  
      public long serializedSize();
  
      public void clear();
  
      public void close();
  
      /**
       * Returns the amount of memory in bytes used off heap.
       * @return the amount of memory in bytes used off heap
       */
      public long offHeapSize();
  
      public void addTo(Ref.IdentityCollection identities);
  }
  