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.bookkeeper.common.allocator;
  
  /**
   * Represents the action to take when it's not possible to allocate memory.
   */
  public enum OutOfMemoryPolicy {
  
      /**
       * Throw regular OOM exception without taking addition actions.
       */
      ThrowException,
  
      /**
       * If it's not possible to allocate a buffer from direct memory, fallback to
       * allocate an unpooled buffer from JVM heap.
       *
       * <p>This will help absorb memory allocation spikes because the heap
       * allocations will naturally slow down the process and will result if full
       * GC cleanup if the Heap itself is full.
       */
      FallbackToHeap,
  }
  