Mercurial > hg > truffle
annotate test/compiler/6663621/IVTest.java @ 20218:828056cf311f
8040792: G1: Memory usage calculation uses sizeof(this) instead of sizeof(classname)
Summary: A few locations in the code use sizeof(this) which returns the size of the pointer instead of sizeof(classname) which returns the size of the sum of its members. This change fixes these errors and adds a few tests.
Reviewed-by: mgerdin, brutisso
author | tschatzl |
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date | Mon, 21 Jul 2014 09:40:19 +0200 |
parents | c18cbe5936b8 |
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1 /* |
1552
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2 * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. |
177 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
177 | 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. | |
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8 * |
177 | 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). | |
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14 * |
177 | 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. | |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 /** |
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26 * @test |
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27 * @bug 6663621 |
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28 * @summary JVM crashes while trying to execute api/java_security/Signature/SignatureTests.html#initSign tests. |
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29 */ |
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30 |
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31 public class IVTest { |
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32 static int paddedSize; |
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33 |
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34 static void padV15(byte[] padded) { |
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35 int psSize = padded.length; |
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36 int k = 0; |
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37 while (psSize-- > 0) { |
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38 padded[k++] = (byte)0xff; |
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39 } |
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40 } |
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41 |
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42 static void padV15_2(int paddedSize) { |
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43 byte[] padded = new byte[paddedSize]; |
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44 int psSize = padded.length; |
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45 int k = 0; |
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46 while (psSize-- > 0) { |
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47 padded[k++] = (byte)0xff; |
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48 } |
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49 } |
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50 |
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51 static void padV15_3() { |
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52 byte[] padded = new byte[paddedSize]; |
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53 int psSize = padded.length; |
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54 int k = 0; |
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55 while (psSize-- > 0) { |
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56 padded[k++] = (byte)0xff; |
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57 } |
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58 } |
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59 |
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60 static void padV15_4() { |
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61 byte[] padded = new byte[paddedSize]; |
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62 int psSize = padded.length; |
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63 for (int k = 0;psSize > 0; psSize--) { |
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64 int i = padded.length - psSize; |
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65 padded[i] = (byte)0xff; |
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66 } |
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67 } |
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68 |
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69 static void padV15_5() { |
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70 byte[] padded = new byte[paddedSize]; |
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71 int psSize = padded.length; |
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72 int k = psSize - 1; |
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73 for (int i = 0; i < psSize; i++) { |
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74 padded[k--] = (byte)0xff; |
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75 } |
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76 } |
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77 |
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78 public static void main(String argv[]) { |
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79 int bounds = 1024; |
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80 int lim = 500000; |
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81 long start = System.currentTimeMillis(); |
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82 for (int j = 0; j < lim; j++) { |
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83 paddedSize = j % bounds; |
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84 padV15(new byte[paddedSize]); |
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85 } |
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86 long end = System.currentTimeMillis(); |
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87 System.out.println(end - start); |
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88 start = System.currentTimeMillis(); |
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89 for (int j = 0; j < lim; j++) { |
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90 paddedSize = j % bounds; |
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91 padV15_2(paddedSize); |
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92 } |
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93 end = System.currentTimeMillis(); |
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94 System.out.println(end - start); |
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95 start = System.currentTimeMillis(); |
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96 for (int j = 0; j < lim; j++) { |
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97 paddedSize = j % bounds; |
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98 padV15_3(); |
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99 } |
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100 end = System.currentTimeMillis(); |
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101 System.out.println(end - start); |
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102 start = System.currentTimeMillis(); |
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103 for (int j = 0; j < lim; j++) { |
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104 paddedSize = j % bounds; |
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105 padV15_4(); |
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106 } |
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107 end = System.currentTimeMillis(); |
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108 System.out.println(end - start); |
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109 start = System.currentTimeMillis(); |
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110 for (int j = 0; j < lim; j++) { |
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111 paddedSize = j % bounds; |
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112 padV15_5(); |
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113 } |
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114 end = System.currentTimeMillis(); |
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115 System.out.println(end - start); |
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116 } |
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117 } |