Mercurial > hg > truffle
view test/compiler/8005419/Test8005419.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 |
---|---|
date | Mon, 21 Jul 2014 09:40:19 +0200 |
parents | 55fb97c4c58d |
children | 4ca6dc0799b6 |
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/* * Copyright (c) 2012, 2013, 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 * @bug 8005419 * @summary Improve intrinsics code performance on x86 by using AVX2 * @run main/othervm -Xbatch -Xmx64m Test8005419 * */ public class Test8005419 { public static int SIZE = 64; public static void main(String[] args) { char[] a = new char[SIZE]; char[] b = new char[SIZE]; for (int i = 16; i < SIZE; i++) { a[i] = (char)i; b[i] = (char)i; } String s1 = new String(a); String s2 = new String(b); // Warm up boolean failed = false; int result = 0; for (int i = 0; i < 10000; i++) { result += test(s1, s2); } for (int i = 0; i < 10000; i++) { result += test(s1, s2); } for (int i = 0; i < 10000; i++) { result += test(s1, s2); } if (result != 0) failed = true; System.out.println("Start testing"); // Compare same string result = test(s1, s1); if (result != 0) { failed = true; System.out.println("Failed same: result = " + result + ", expected 0"); } // Compare equal strings for (int i = 1; i <= SIZE; i++) { s1 = new String(a, 0, i); s2 = new String(b, 0, i); result = test(s1, s2); if (result != 0) { failed = true; System.out.println("Failed equals s1[" + i + "], s2[" + i + "]: result = " + result + ", expected 0"); } } // Compare equal strings but different sizes for (int i = 1; i <= SIZE; i++) { s1 = new String(a, 0, i); for (int j = 1; j <= SIZE; j++) { s2 = new String(b, 0, j); result = test(s1, s2); if (result != (i-j)) { failed = true; System.out.println("Failed diff size s1[" + i + "], s2[" + j + "]: result = " + result + ", expected " + (i-j)); } } } // Compare strings with one char different and different sizes for (int i = 1; i <= SIZE; i++) { s1 = new String(a, 0, i); for (int j = 0; j < i; j++) { b[j] -= 3; // change char s2 = new String(b, 0, i); result = test(s1, s2); int chdiff = a[j] - b[j]; if (result != chdiff) { failed = true; System.out.println("Failed diff char s1[" + i + "], s2[" + i + "]: result = " + result + ", expected " + chdiff); } result = test(s2, s1); chdiff = b[j] - a[j]; if (result != chdiff) { failed = true; System.out.println("Failed diff char s2[" + i + "], s1[" + i + "]: result = " + result + ", expected " + chdiff); } b[j] += 3; // restore } } if (failed) { System.out.println("FAILED"); System.exit(97); } System.out.println("PASSED"); } private static int test(String str1, String str2) { return str1.compareTo(str2); } }