88 lines
3.2 KiB
Java
88 lines
3.2 KiB
Java
/*
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* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package compiler.arraycopy;
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import java.util.Random;
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/**
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* @test
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* @bug 8310159
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* @summary Test large arrayCopy.
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*
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* @run main/timeout=600 compiler.arraycopy.TestArrayCopyDisjointLarge
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*
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*/
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public class TestArrayCopyDisjointLarge {
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public static final int ARRLEN = 4194304;
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public static int fromPos, toPos;
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public static byte[] fromByteArr, toByteArr;
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public static void setup() {
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fromPos = 0;
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toPos = 0;
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fromByteArr = new byte[ARRLEN];
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toByteArr = new byte[ARRLEN];
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for (int i = 0 ; i < ARRLEN ; i++) {
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fromByteArr[i] = (byte)i;
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}
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}
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public static void validate(String msg, byte[] toByteArr, int length, int fromPos, int toPos) {
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for(int i = 0 ; i < length; i++) {
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if (fromByteArr[i + fromPos] != toByteArr[i + toPos]) {
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System.out.println(msg + "[" + toByteArr.getClass() + "] Result mismtach at i = " + i
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+ " expected = " + fromByteArr[i + fromPos]
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+ " actual = " + toByteArr[i + toPos]
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+ " fromPos = " + fromPos
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+ " toPos = " + toPos);
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throw new Error("Fail");
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}
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}
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}
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public static void testByte(int length, int fromPos, int toPos) {
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System.arraycopy(fromByteArr, fromPos, toByteArr, toPos, length);
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validate(" Test ByteArr ", toByteArr, length, fromPos, toPos);
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}
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public static void main(String [] args) {
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int base_size = 2621440;
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Random r = new Random(1024);
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int [] lengths = {base_size - 1, base_size, base_size + 1, base_size + 63, base_size + 64,
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base_size + 65, base_size + 255, base_size + 256, base_size + 257,
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base_size + r.nextInt(2048)};
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setup();
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for (int i = 0 ; i < 20 ; i++ ) {
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testByte(lengths[i % lengths.length], 0, 0);
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testByte(lengths[i % lengths.length], 0, 9);
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testByte(lengths[i % lengths.length], 9, 0);
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testByte(lengths[i % lengths.length], 9, 9);
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testByte(lengths[i % lengths.length], r.nextInt(2048) , r.nextInt(2048));
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}
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}
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}
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