code: /*
   * Copyright 2012-2018 Chronicle Map Contributors
   *
   * Licensed 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 net.openhft.chronicle.hash.impl;
  
  public final class SizePrefixedBlob {
  
      public static final int HEADER_OFFSET = 0;
      public static final int SIZE_WORD_OFFSET = 8;
      public static final int SELF_BOOTSTRAPPING_HEADER_OFFSET = 12;
  
      public static final int READY = 0;
      public static final int NOT_COMPLETE = 0x80000000;
  
      public static final int DATA = 0;
      public static final int META_DATA = 0x40000000;
  
      public static final int SIZE_MASK = (1 << 30) - 1;
  
      private SizePrefixedBlob() {
      }
  
      public static boolean isReady(int sizeWord) {
          return sizeWord > 0;
      }
  
      public static int extractSize(int sizeWord) {
          return sizeWord & SIZE_MASK;
      }
  }
  