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.asterix.common.memory;
  
  import java.nio.ByteBuffer;
  
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  
  public class FrameAction {
      private static final boolean DEBUG = false;
      private static final Logger LOGGER = LogManager.getLogger();
      private ByteBuffer allocated;
      private ByteBuffer frame;
  
      public void call(ByteBuffer freeFrame) {
          if (DEBUG) {
              LOGGER.info("FrameAction: My subscription is being answered");
          }
          freeFrame.put(frame);
          synchronized (this) {
              allocated = freeFrame;
              if (DEBUG) {
                  LOGGER.info("FrameAction: Waking up waiting threads");
              }
              notifyAll();
          }
      }
  
      public synchronized ByteBuffer retrieve() throws InterruptedException {
          if (DEBUG) {
              LOGGER.info("FrameAction: Attempting to get allocated buffer");
          }
          while (allocated == null) {
              if (DEBUG) {
                  LOGGER.info("FrameAction: Allocated buffer is not ready yet. I will wait for it");
              }
              wait();
              if (DEBUG) {
                  LOGGER.info("FrameAction: Awoken Up");
              }
          }
          ByteBuffer temp = allocated;
          allocated = null;
          return temp;
      }
  
      public void setFrame(ByteBuffer frame) {
          this.frame = frame;
      }
  
      public int getSize() {
          return frame.capacity();
      }
  }
  