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Java > Open Source Codes > org > hsqldb > test > TestObjectSize


1 /* Copyright (c) 2001-2005, The HSQL Development Group
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  *
7  * Redistributions of source code must retain the above copyright notice, this
8  * list of conditions and the following disclaimer.
9  *
10  * Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  *
14  * Neither the name of the HSQL Development Group nor the names of its
15  * contributors may be used to endorse or promote products derived from this
16  * software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
22  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30
31
32 package org.hsqldb.test;
33
34 import java.sql.Timestamp JavaDoc;
35
36 import org.hsqldb.lib.StopWatch;
37
38 public class TestObjectSize {
39
40     public TestObjectSize() {
41
42         StopWatch sw = new StopWatch();
43         int testCount = 2350000;
44
45         System.out.println("Fill Memory with Objects ");
46
47         Object JavaDoc[] objectArray = new Object JavaDoc[testCount];
48
49         for (int j = 0; j < objectArray.length; j++) {
50             objectArray[j] = new Timestamp JavaDoc(0);
51         }
52
53         System.out.println("Array Filled " + sw.elapsedTime());
54
55         for (int j = 0; j < objectArray.length; j++) {
56             objectArray[j] = null;
57         }
58
59         Object JavaDoc[] objectArray2 = new Object JavaDoc[testCount];
60         Object JavaDoc[] objectArray3 = new Object JavaDoc[testCount];
61         Object JavaDoc[] objectArray4 = new Object JavaDoc[testCount];
62         Object JavaDoc[] objectArray5 = new Object JavaDoc[testCount];
63         Object JavaDoc[] objectArray6 = new Object JavaDoc[testCount];
64
65 // Object[] objectArray7 = new Object[testCount];
66 short[] shortArray = new short[testCount];
67         byte[] byteArray = new byte[testCount];
68
69         System.out.println("Fill with Empty Arrays " + sw.elapsedTime());
70         sw.zero();
71     }
72
73     public static void main(String JavaDoc[] argv) {
74         TestObjectSize ls = new TestObjectSize();
75     }
76 }
77
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