1 /*
2  * Copyright (c) 2002, 2010, 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 4738257 4853295
26  * @summary Test Util.getTemporaryBuffer
27  */
28 
29 import java.io.*;
30 import java.nio.channels.*;
31 import java.nio.*;
32 
33 public class TempBuffer {
34 
35     private static final int SIZE = 4000;
36 
37     private static final int ITERATIONS = 10;
38 
main(String[] args)39     public static void main(String[] args) throws Exception {
40         for (int i=0; i<ITERATIONS; i++)
41             testTempBufs();
42     }
43 
testTempBufs()44     private static void testTempBufs() throws Exception {
45         Pipe pipe = Pipe.open();
46         Pipe.SourceChannel sourceChannel = pipe.source();
47         final Pipe.SinkChannel sinkChannel = pipe.sink();
48 
49         Thread writerThread = new Thread() {
50             public void run() {
51                 try {
52                     OutputStream out = Channels.newOutputStream(sinkChannel);
53                     File blah = File.createTempFile("blah1", null);
54                     blah.deleteOnExit();
55                     TempBuffer.initTestFile(blah);
56                     RandomAccessFile raf = new RandomAccessFile(blah, "rw");
57                     FileChannel fc = raf.getChannel();
58                     try {
59                         fc.transferTo(0, SIZE, Channels.newChannel(out));
60                     } finally {
61                         fc.close();
62                     }
63                     out.flush();
64                 } catch (IOException ioe) {
65                     throw new RuntimeException(ioe);
66                 }
67             }
68         };
69 
70         writerThread.start();
71 
72         InputStream in = Channels.newInputStream(sourceChannel);
73         File blah = File.createTempFile("blah2", null);
74         blah.deleteOnExit();
75         RandomAccessFile raf = new RandomAccessFile(blah, "rw");
76         FileChannel fc = raf.getChannel();
77         try {
78             raf.setLength(SIZE);
79             fc.transferFrom(Channels.newChannel(in), 0, SIZE);
80         } finally {
81             fc.close();
82         }
83 
84         sourceChannel.close();
85         sinkChannel.close();
86         blah.delete();
87     }
88 
initTestFile(File blah)89     private static void initTestFile(File blah) throws IOException {
90         FileOutputStream fos = new FileOutputStream(blah);
91         BufferedWriter awriter
92             = new BufferedWriter(new OutputStreamWriter(fos, "8859_1"));
93 
94         for(int i=0; i<4000; i++) {
95             String number = new Integer(i).toString();
96             for (int h=0; h<4-number.length(); h++)
97                 awriter.write("0");
98             awriter.write(""+i);
99             awriter.newLine();
100         }
101        awriter.flush();
102        awriter.close();
103     }
104 }
105