1 /*
2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /* @test
25 * @bug 8195160
26 * @summary Test asynchronous close during a blocking write
27 * @requires (os.family == "linux")
28 * @library .. /test/lib
29 * @build RsocketTest
30 * @run main/othervm -Djava.net.preferIPv4Stack=true CloseDuringWrite
31 * @key randomness
32 */
33 import java.io.Closeable;
34 import java.io.IOException;
35 import java.nio.ByteBuffer;
36 import java.nio.channels.*;
37 import java.net.*;
38 import java.util.concurrent.*;
39 import java.util.Random;
40 import jdk.net.Sockets;
41
42 public class CloseDuringWrite {
43
44 static final Random rand = new Random();
45 static ServerSocketChannel ssc;
46 static SocketChannel source;
47 static SocketAddress sa;
48
49 /**
50 * A task that closes a Closeable
51 */
52 static class Closer implements Callable<Void> {
53 final Closeable c;
54 Closer(Closeable c) {
55 this.c = c;
56 }
57 public Void call() throws IOException {
58 c.close();
59 return null;
60 }
61 }
62
63 public static void main(String[] args) throws Exception {
64 if (!RsocketTest.isRsocketAvailable())
65 return;
66
67 ScheduledExecutorService pool = Executors.newSingleThreadScheduledExecutor();
68 try {
69 try {
70 ssc = Sockets.openRdmaServerSocketChannel();
71 InetAddress lh = InetAddress.getLocalHost();
72 ssc.bind(new InetSocketAddress(lh, 0));
73 int port = ssc.socket().getLocalPort();
74 sa = new InetSocketAddress(lh, port);
75
76 ByteBuffer bb = ByteBuffer.allocate(2 * 1024 * 1024);
77
78 for (int i = 0; i < 20; i++) {
79 try {
80 source = Sockets.openRdmaSocketChannel();
81 Runnable runnable = new Runnable() {
82 @Override
83 public void run() {
84 try {
85 source.connect(sa);
86 } catch (Exception e) {
87 e.printStackTrace();
88 throw new RuntimeException("Test Failed");
89 }
90 }
91 };
92
93 Thread t = new Thread(runnable);
94 t.start();
95 SocketChannel sink = ssc.accept();
96 // schedule channel to be closed
97 Closer c = new Closer(source);
98 int when = 1000 + rand.nextInt(2000);
99 Future<Void> result = pool.schedule(c, when, TimeUnit.MILLISECONDS);
100
101 // the write should either succeed or else throw a
102 // ClosedChannelException (more likely an
103 // AsynchronousCloseException)
104 try {
105 for (;;) {
106 int limit = rand.nextInt(bb.capacity());
107 bb.position(0);
108 bb.limit(limit);
109 int n = source.write(bb);
110 System.out.format("wrote %d, expected %d%n", n, limit);
111 }
112 } catch (ClosedChannelException expected) {
113 System.out.println(expected + " (expected)");
114 } finally {
115 result.get();
116 }
117 } catch (Exception e) {
118 e.printStackTrace();
119 throw new RuntimeException("Test Failed");
120 }
121 }
122 } catch (Exception e) {
123 e.printStackTrace();
124 throw new RuntimeException("Test Failed");
125 }
126 } finally {
127 pool.shutdown();
128 }
129 }
130 }