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/*
 * 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.parquet.bytes;

import java.nio.ByteBuffer;

public interface ByteBufferAllocator {
  ByteBuffer allocate(int size);

  /**
   * For RefCounted implementations using direct memory, the release method
   * needs to be called to free references to the allocated memory.
   *
   * @param b a ByteBuffer
   */
  void release(ByteBuffer b);

  /**
   * Indicates if this allocator will produce ByteBuffers backed by direct memory.
   *
   * @return true if direct memory backed buffers will be created by this allocator, else false
   */
  boolean isDirect();
}