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annotate test/compiler/8005419/Test8005419.java @ 20218:828056cf311f

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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
date Mon, 21 Jul 2014 09:40:19 +0200
parents 55fb97c4c58d
children 4ca6dc0799b6
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1 /*
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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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 * @test
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26 * @bug 8005419
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27 * @summary Improve intrinsics code performance on x86 by using AVX2
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28 * @run main/othervm -Xbatch -Xmx64m Test8005419
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29 *
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30 */
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31
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32 public class Test8005419 {
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33 public static int SIZE = 64;
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34
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35 public static void main(String[] args) {
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36 char[] a = new char[SIZE];
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37 char[] b = new char[SIZE];
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38
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39 for (int i = 16; i < SIZE; i++) {
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40 a[i] = (char)i;
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41 b[i] = (char)i;
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42 }
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43 String s1 = new String(a);
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44 String s2 = new String(b);
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45
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46 // Warm up
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47 boolean failed = false;
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48 int result = 0;
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49 for (int i = 0; i < 10000; i++) {
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50 result += test(s1, s2);
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51 }
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52 for (int i = 0; i < 10000; i++) {
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53 result += test(s1, s2);
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54 }
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55 for (int i = 0; i < 10000; i++) {
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56 result += test(s1, s2);
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57 }
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58 if (result != 0) failed = true;
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59
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60 System.out.println("Start testing");
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61 // Compare same string
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62 result = test(s1, s1);
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63 if (result != 0) {
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64 failed = true;
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65 System.out.println("Failed same: result = " + result + ", expected 0");
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66 }
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67 // Compare equal strings
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68 for (int i = 1; i <= SIZE; i++) {
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69 s1 = new String(a, 0, i);
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70 s2 = new String(b, 0, i);
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71 result = test(s1, s2);
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72 if (result != 0) {
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73 failed = true;
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74 System.out.println("Failed equals s1[" + i + "], s2[" + i + "]: result = " + result + ", expected 0");
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75 }
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76 }
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77 // Compare equal strings but different sizes
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78 for (int i = 1; i <= SIZE; i++) {
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79 s1 = new String(a, 0, i);
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80 for (int j = 1; j <= SIZE; j++) {
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81 s2 = new String(b, 0, j);
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82 result = test(s1, s2);
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83 if (result != (i-j)) {
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84 failed = true;
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85 System.out.println("Failed diff size s1[" + i + "], s2[" + j + "]: result = " + result + ", expected " + (i-j));
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86 }
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87 }
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88 }
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89 // Compare strings with one char different and different sizes
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90 for (int i = 1; i <= SIZE; i++) {
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91 s1 = new String(a, 0, i);
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92 for (int j = 0; j < i; j++) {
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93 b[j] -= 3; // change char
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94 s2 = new String(b, 0, i);
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95 result = test(s1, s2);
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96 int chdiff = a[j] - b[j];
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97 if (result != chdiff) {
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98 failed = true;
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99 System.out.println("Failed diff char s1[" + i + "], s2[" + i + "]: result = " + result + ", expected " + chdiff);
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100 }
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101 result = test(s2, s1);
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102 chdiff = b[j] - a[j];
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103 if (result != chdiff) {
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104 failed = true;
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105 System.out.println("Failed diff char s2[" + i + "], s1[" + i + "]: result = " + result + ", expected " + chdiff);
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106 }
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107 b[j] += 3; // restore
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108 }
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109 }
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110 if (failed) {
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111 System.out.println("FAILED");
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112 System.exit(97);
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113 }
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114 System.out.println("PASSED");
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115 }
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116
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117 private static int test(String str1, String str2) {
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118 return str1.compareTo(str2);
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119 }
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120 }