content: /*
   * Copyright (C) 2012-2016 Markus Junginger, greenrobot (http://greenrobot.org)
   *
   * 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 org.greenrobot.eventbus;
  
  import java.util.ArrayList;
  import java.util.List;
  
  final class PendingPost {
    private static final List<PendingPost> pendingPostPool = new ArrayList<PendingPost>();
  
    Object event;
    Subscription subscription;
    PendingPost next;
  
    private PendingPost(Object event, Subscription subscription) {
      this.event = event;
      this.subscription = subscription;
    }
  
    static PendingPost obtainPendingPost(Subscription subscription, Object event) {
      synchronized (pendingPostPool) {
        int size = pendingPostPool.size();
        if (size > 0) {
          PendingPost pendingPost = pendingPostPool.remove(size - 1);
          pendingPost.event = event;
          pendingPost.subscription = subscription;
          pendingPost.next = null;
          return pendingPost;
        }
      }
      return new PendingPost(event, subscription);
    }
  
    static void releasePendingPost(PendingPost pendingPost) {
      pendingPost.event = null;
      pendingPost.subscription = null;
      pendingPost.next = null;
      synchronized (pendingPostPool) {
        // Don't let the pool grow indefinitely
        if (pendingPostPool.size() < 10000) {
          pendingPostPool.add(pendingPost);
        }
      }
    }
  }
  