0N/A/*
2362N/A * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A/* @test
0N/A * @bug 6565543
0N/A * @summary Minimal test for unsafe.copyMemory() and unsafe.setMemory()
0N/A */
0N/A
0N/Aimport java.util.*;
0N/Aimport java.lang.reflect.*;
0N/Aimport java.nio.*;
0N/A
0N/Aimport sun.misc.Unsafe;
0N/A
0N/Aimport sun.nio.ch.DirectBuffer;
0N/A
0N/Apublic class CopyMemory {
0N/A
0N/A private final static int BUFFER_SIZE = 1024;
0N/A private final static int N = 16 * 1024;
0N/A
0N/A private final static int FILLER = 0x55;
0N/A private final static int FILLER2 = 0x33;
0N/A
0N/A private final static Random random = new Random();
0N/A
0N/A private static void set(byte[] b, int ofs, int len, int value) {
0N/A for (int i = 0; i < len; i++) {
0N/A b[ofs + i] = (byte)value;
0N/A }
0N/A }
0N/A
0N/A private static void check(byte[] b, int ofs, int len, int value) {
0N/A for (int i = 0; i < len; i++) {
0N/A int r = b[ofs + i] & 0xff;
0N/A if (r != value) {
0N/A throw new RuntimeException("mismatch");
0N/A }
0N/A }
0N/A }
0N/A
0N/A private static void set(Unsafe unsafe, long addr, int ofs, int len, int value) {
0N/A for (int i = 0; i < len; i++) {
0N/A unsafe.putByte(null, addr + ofs + i, (byte)value);
0N/A }
0N/A }
0N/A
0N/A private static void check(Unsafe unsafe, long addr, int ofs, int len, int value) {
0N/A for (int i = 0; i < len; i++) {
0N/A int r = unsafe.getByte(null, addr + ofs + i) & 0xff;
0N/A if (r != value) {
0N/A throw new RuntimeException("mismatch");
0N/A }
0N/A }
0N/A }
0N/A
0N/A private static final List<ByteBuffer> buffers = new ArrayList<ByteBuffer>();
0N/A
0N/A private static long getMemory(int n) {
0N/A ByteBuffer b = ByteBuffer.allocateDirect(n);
0N/A if (b instanceof DirectBuffer == false) {
0N/A throw new RuntimeException("Not a direct buffer");
0N/A }
0N/A buffers.add(b); // make sure the buffer does not get GCed
0N/A return ((DirectBuffer)b).address();
0N/A }
0N/A
0N/A private static void testSetByteArray(Unsafe unsafe) throws Exception {
0N/A System.out.println("Testing setMemory() for byte[]...");
0N/A byte[] b = new byte[BUFFER_SIZE];
0N/A for (int i = 0; i < N; i++) {
0N/A set(b, 0, BUFFER_SIZE, FILLER);
0N/A int ofs = random.nextInt(BUFFER_SIZE / 2);
0N/A int len = random.nextInt(BUFFER_SIZE / 2);
0N/A int val = random.nextInt(256);
0N/A unsafe.setMemory(b, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs, len, (byte)val);
0N/A check(b, 0, ofs - 1, FILLER);
0N/A check(b, ofs, len, val);
0N/A check(b, ofs + len, BUFFER_SIZE - (ofs + len), FILLER);
0N/A }
0N/A }
0N/A
0N/A private static void testSetRawMemory(Unsafe unsafe) throws Exception {
0N/A System.out.println("Testing setMemory() for raw memory...");
0N/A long b = getMemory(BUFFER_SIZE);
0N/A for (int i = 0; i < N; i++) {
0N/A set(unsafe, b, 0, BUFFER_SIZE, FILLER);
0N/A int ofs = random.nextInt(BUFFER_SIZE / 2);
0N/A int len = random.nextInt(BUFFER_SIZE / 2);
0N/A int val = random.nextInt(256);
0N/A unsafe.setMemory(null, b + ofs, len, (byte)val);
0N/A check(unsafe, b, 0, ofs - 1, FILLER);
0N/A check(unsafe, b, ofs, len, val);
0N/A check(unsafe, b, ofs + len, BUFFER_SIZE - (ofs + len), FILLER);
0N/A }
0N/A }
0N/A
0N/A private static void testCopyByteArrayToByteArray(Unsafe unsafe) throws Exception {
0N/A System.out.println("Testing copyMemory() for byte[] to byte[]...");
0N/A byte[] b1 = new byte[BUFFER_SIZE];
0N/A byte[] b2 = new byte[BUFFER_SIZE];
0N/A for (int i = 0; i < N; i++) {
0N/A set(b1, 0, BUFFER_SIZE, FILLER);
0N/A set(b2, 0, BUFFER_SIZE, FILLER2);
0N/A int ofs = random.nextInt(BUFFER_SIZE / 2);
0N/A int len = random.nextInt(BUFFER_SIZE / 2);
0N/A int val = random.nextInt(256);
0N/A set(b1, ofs, len, val);
0N/A int ofs2 = random.nextInt(BUFFER_SIZE / 2);
0N/A unsafe.copyMemory(b1, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs,
0N/A b2, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs2, len);
0N/A check(b2, 0, ofs2 - 1, FILLER2);
0N/A check(b2, ofs2, len, val);
0N/A check(b2, ofs2 + len, BUFFER_SIZE - (ofs2 + len), FILLER2);
0N/A }
0N/A }
0N/A
0N/A private static void testCopyByteArrayToRawMemory(Unsafe unsafe) throws Exception {
0N/A System.out.println("Testing copyMemory() for byte[] to raw memory...");
0N/A byte[] b1 = new byte[BUFFER_SIZE];
0N/A long b2 = getMemory(BUFFER_SIZE);
0N/A for (int i = 0; i < N; i++) {
0N/A set(b1, 0, BUFFER_SIZE, FILLER);
0N/A set(unsafe, b2, 0, BUFFER_SIZE, FILLER2);
0N/A int ofs = random.nextInt(BUFFER_SIZE / 2);
0N/A int len = random.nextInt(BUFFER_SIZE / 2);
0N/A int val = random.nextInt(256);
0N/A set(b1, ofs, len, val);
0N/A int ofs2 = random.nextInt(BUFFER_SIZE / 2);
0N/A unsafe.copyMemory(b1, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs,
0N/A null, b2 + ofs2, len);
0N/A check(unsafe, b2, 0, ofs2 - 1, FILLER2);
0N/A check(unsafe, b2, ofs2, len, val);
0N/A check(unsafe, b2, ofs2 + len, BUFFER_SIZE - (ofs2 + len), FILLER2);
0N/A }
0N/A }
0N/A
0N/A private static void testCopyRawMemoryToByteArray(Unsafe unsafe) throws Exception {
0N/A System.out.println("Testing copyMemory() for raw memory to byte[]...");
0N/A long b1 = getMemory(BUFFER_SIZE);
0N/A byte[] b2 = new byte[BUFFER_SIZE];
0N/A for (int i = 0; i < N; i++) {
0N/A set(unsafe, b1, 0, BUFFER_SIZE, FILLER);
0N/A set(b2, 0, BUFFER_SIZE, FILLER2);
0N/A int ofs = random.nextInt(BUFFER_SIZE / 2);
0N/A int len = random.nextInt(BUFFER_SIZE / 2);
0N/A int val = random.nextInt(256);
0N/A set(unsafe, b1, ofs, len, val);
0N/A int ofs2 = random.nextInt(BUFFER_SIZE / 2);
0N/A unsafe.copyMemory(null, b1 + ofs,
0N/A b2, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs2, len);
0N/A check(b2, 0, ofs2 - 1, FILLER2);
0N/A check(b2, ofs2, len, val);
0N/A check(b2, ofs2 + len, BUFFER_SIZE - (ofs2 + len), FILLER2);
0N/A }
0N/A }
0N/A
0N/A private static void testCopyRawMemoryToRawMemory(Unsafe unsafe) throws Exception {
0N/A System.out.println("Testing copyMemory() for raw memory to raw memory...");
0N/A long b1 = getMemory(BUFFER_SIZE);
0N/A long b2 = getMemory(BUFFER_SIZE);
0N/A for (int i = 0; i < N; i++) {
0N/A set(unsafe, b1, 0, BUFFER_SIZE, FILLER);
0N/A set(unsafe, b2, 0, BUFFER_SIZE, FILLER2);
0N/A int ofs = random.nextInt(BUFFER_SIZE / 2);
0N/A int len = random.nextInt(BUFFER_SIZE / 2);
0N/A int val = random.nextInt(256);
0N/A set(unsafe, b1, ofs, len, val);
0N/A int ofs2 = random.nextInt(BUFFER_SIZE / 2);
0N/A unsafe.copyMemory(null, b1 + ofs,
0N/A null, b2 + ofs2, len);
0N/A check(unsafe, b2, 0, ofs2 - 1, FILLER2);
0N/A check(unsafe, b2, ofs2, len, val);
0N/A check(unsafe, b2, ofs2 + len, BUFFER_SIZE - (ofs2 + len), FILLER2);
0N/A }
0N/A }
0N/A
0N/A private static Unsafe getUnsafe() throws Exception {
0N/A Field f = Unsafe.class.getDeclaredField("theUnsafe");
0N/A f.setAccessible(true);
0N/A return (Unsafe)f.get(null);
0N/A }
0N/A
0N/A public static void main(String[] args) throws Exception {
0N/A Unsafe unsafe = getUnsafe();
0N/A
0N/A testSetByteArray(unsafe);
0N/A testSetRawMemory(unsafe);
0N/A testCopyByteArrayToByteArray(unsafe);
0N/A testCopyByteArrayToRawMemory(unsafe);
0N/A testCopyRawMemoryToByteArray(unsafe);
0N/A testCopyRawMemoryToRawMemory(unsafe);
0N/A
0N/A System.out.println("OK");
0N/A }
0N/A
0N/A}