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1   /*
2    * Copyright 2015 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty.channel.epoll;
17  
18  import io.netty.channel.RecvByteBufAllocator;
19  
20  final class EpollRecvByteAllocatorStreamingHandle extends EpollRecvByteAllocatorHandle {
21      public EpollRecvByteAllocatorStreamingHandle(RecvByteBufAllocator.ExtendedHandle handle) {
22          super(handle);
23      }
24  
25      @Override
26      boolean maybeMoreDataToRead() {
27          /**
28           * For stream oriented descriptors we can assume we are done reading if the last read attempt didn't produce
29           * a full buffer (see Q9 in <a href="http://man7.org/linux/man-pages/man7/epoll.7.html">epoll man</a>).
30           *
31           * If EPOLLRDHUP has been received we must read until we get a read error.
32           */
33          return lastBytesRead() == attemptedBytesRead() || isReceivedRdHup();
34      }
35  }