1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.surefire.api.util.internal;
20
21 import java.io.IOException;
22 import java.nio.ByteBuffer;
23 import java.nio.channels.ClosedChannelException;
24 import java.nio.channels.NonReadableChannelException;
25 import java.nio.channels.ReadableByteChannel;
26
27 /**
28 * The channel used for reads which cannot be implicitly closed after the operational Thread
29 * is {@link Thread#isInterrupted() interrupted}.
30 *
31 * @since 3.0.0-M5
32 */
33 abstract class AbstractNoninterruptibleReadableChannel implements ReadableByteChannel {
34 private volatile boolean open = true;
35
36 protected abstract int readImpl(ByteBuffer src) throws IOException;
37
38 protected abstract void closeImpl() throws IOException;
39
40 @Override
41 public final int read(ByteBuffer src) throws IOException {
42 if (!isOpen()) {
43 throw new ClosedChannelException();
44 }
45
46 if (!src.hasArray() || src.isReadOnly()) {
47 throw new NonReadableChannelException();
48 }
49
50 return src.hasRemaining() ? readImpl(src) : 0;
51 }
52
53 @Override
54 public final boolean isOpen() {
55 return open;
56 }
57
58 @Override
59 public final void close() throws IOException {
60 try {
61 closeImpl();
62 } finally {
63 open = false;
64 }
65 }
66 }