File: BufferSizes.java

package info (click to toggle)
openjdk-11 11.0.4%2B11-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 757,028 kB
  • sloc: java: 5,016,041; xml: 1,191,974; cpp: 934,731; ansic: 555,697; sh: 24,299; objc: 12,703; python: 3,602; asm: 3,415; makefile: 2,772; awk: 351; sed: 172; perl: 114; jsp: 24; csh: 3
file content (76 lines) | stat: -rw-r--r-- 2,558 bytes parent folder | download | duplicates (16)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
/*
 * Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/* @test
   @summary Test interaction of buffer sizes in buffered char and byte streams
 */

import java.io.*;

public class BufferSizes {

    static int min = 90;
    static int max = 110;
    static int chunk = 100;
    static int count = 1000;

    static void runBytes() throws IOException {
        for (int sz = min; sz <= max; sz++) {
            System.err.println(sz);
            InputStream in
                = new BufferedInputStream(new ABCInputStream(count, chunk), sz);
            OutputStream out
                = new BufferedOutputStream(new ABCOutputStream(count), sz);
            int n;
            byte[] buf = new byte[sz];
            while ((n = in.read(buf, 0, sz)) != -1)
                out.write(buf, 0, n);
            in.close();
            out.close();
        }
    }


    static void runChars() throws IOException {
        for (int sz = min; sz <= max; sz++) {
            System.err.println(sz);
            Reader in
                = new BufferedReader(new InputStreamReader(new ABCInputStream(count, chunk)), sz);
            Writer out
                = new BufferedWriter(new OutputStreamWriter(new ABCOutputStream(count)), sz);
            int n;
            char[] cbuf = new char[sz];

            while ((n = in.read(cbuf, 0, sz)) != -1)
                out.write(cbuf, 0, n);
            in.close();
            out.close();
        }
    }

    public static void main(String[] args) throws IOException {
        runBytes();
        runChars();
    }

}