218 lines
8.4 KiB
Java
218 lines
8.4 KiB
Java
|
/*
|
||
|
|
* Copyright 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
||
|
|
* CA 95054 USA or visit www.sun.com if you need additional information or
|
||
|
|
* have any questions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* @test
|
||
|
|
* @bug 6565543
|
||
|
|
* @summary Minimal test for unsafe.copyMemory() and unsafe.setMemory()
|
||
|
|
*/
|
||
|
|
|
||
|
|
import java.util.*;
|
||
|
|
import java.lang.reflect.*;
|
||
|
|
import java.nio.*;
|
||
|
|
|
||
|
|
import sun.misc.Unsafe;
|
||
|
|
|
||
|
|
import sun.nio.ch.DirectBuffer;
|
||
|
|
|
||
|
|
public class CopyMemory {
|
||
|
|
|
||
|
|
private final static int BUFFER_SIZE = 1024;
|
||
|
|
private final static int N = 16 * 1024;
|
||
|
|
|
||
|
|
private final static int FILLER = 0x55;
|
||
|
|
private final static int FILLER2 = 0x33;
|
||
|
|
|
||
|
|
private final static Random random = new Random();
|
||
|
|
|
||
|
|
private static void set(byte[] b, int ofs, int len, int value) {
|
||
|
|
for (int i = 0; i < len; i++) {
|
||
|
|
b[ofs + i] = (byte)value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void check(byte[] b, int ofs, int len, int value) {
|
||
|
|
for (int i = 0; i < len; i++) {
|
||
|
|
int r = b[ofs + i] & 0xff;
|
||
|
|
if (r != value) {
|
||
|
|
throw new RuntimeException("mismatch");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void set(Unsafe unsafe, long addr, int ofs, int len, int value) {
|
||
|
|
for (int i = 0; i < len; i++) {
|
||
|
|
unsafe.putByte(null, addr + ofs + i, (byte)value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void check(Unsafe unsafe, long addr, int ofs, int len, int value) {
|
||
|
|
for (int i = 0; i < len; i++) {
|
||
|
|
int r = unsafe.getByte(null, addr + ofs + i) & 0xff;
|
||
|
|
if (r != value) {
|
||
|
|
throw new RuntimeException("mismatch");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static final List<ByteBuffer> buffers = new ArrayList<ByteBuffer>();
|
||
|
|
|
||
|
|
private static long getMemory(int n) {
|
||
|
|
ByteBuffer b = ByteBuffer.allocateDirect(n);
|
||
|
|
if (b instanceof DirectBuffer == false) {
|
||
|
|
throw new RuntimeException("Not a direct buffer");
|
||
|
|
}
|
||
|
|
buffers.add(b); // make sure the buffer does not get GCed
|
||
|
|
return ((DirectBuffer)b).address();
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void testSetByteArray(Unsafe unsafe) throws Exception {
|
||
|
|
System.out.println("Testing setMemory() for byte[]...");
|
||
|
|
byte[] b = new byte[BUFFER_SIZE];
|
||
|
|
for (int i = 0; i < N; i++) {
|
||
|
|
set(b, 0, BUFFER_SIZE, FILLER);
|
||
|
|
int ofs = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int len = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int val = random.nextInt(256);
|
||
|
|
unsafe.setMemory(b, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs, len, (byte)val);
|
||
|
|
check(b, 0, ofs - 1, FILLER);
|
||
|
|
check(b, ofs, len, val);
|
||
|
|
check(b, ofs + len, BUFFER_SIZE - (ofs + len), FILLER);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void testSetRawMemory(Unsafe unsafe) throws Exception {
|
||
|
|
System.out.println("Testing setMemory() for raw memory...");
|
||
|
|
long b = getMemory(BUFFER_SIZE);
|
||
|
|
for (int i = 0; i < N; i++) {
|
||
|
|
set(unsafe, b, 0, BUFFER_SIZE, FILLER);
|
||
|
|
int ofs = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int len = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int val = random.nextInt(256);
|
||
|
|
unsafe.setMemory(null, b + ofs, len, (byte)val);
|
||
|
|
check(unsafe, b, 0, ofs - 1, FILLER);
|
||
|
|
check(unsafe, b, ofs, len, val);
|
||
|
|
check(unsafe, b, ofs + len, BUFFER_SIZE - (ofs + len), FILLER);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void testCopyByteArrayToByteArray(Unsafe unsafe) throws Exception {
|
||
|
|
System.out.println("Testing copyMemory() for byte[] to byte[]...");
|
||
|
|
byte[] b1 = new byte[BUFFER_SIZE];
|
||
|
|
byte[] b2 = new byte[BUFFER_SIZE];
|
||
|
|
for (int i = 0; i < N; i++) {
|
||
|
|
set(b1, 0, BUFFER_SIZE, FILLER);
|
||
|
|
set(b2, 0, BUFFER_SIZE, FILLER2);
|
||
|
|
int ofs = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int len = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int val = random.nextInt(256);
|
||
|
|
set(b1, ofs, len, val);
|
||
|
|
int ofs2 = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
unsafe.copyMemory(b1, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs,
|
||
|
|
b2, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs2, len);
|
||
|
|
check(b2, 0, ofs2 - 1, FILLER2);
|
||
|
|
check(b2, ofs2, len, val);
|
||
|
|
check(b2, ofs2 + len, BUFFER_SIZE - (ofs2 + len), FILLER2);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void testCopyByteArrayToRawMemory(Unsafe unsafe) throws Exception {
|
||
|
|
System.out.println("Testing copyMemory() for byte[] to raw memory...");
|
||
|
|
byte[] b1 = new byte[BUFFER_SIZE];
|
||
|
|
long b2 = getMemory(BUFFER_SIZE);
|
||
|
|
for (int i = 0; i < N; i++) {
|
||
|
|
set(b1, 0, BUFFER_SIZE, FILLER);
|
||
|
|
set(unsafe, b2, 0, BUFFER_SIZE, FILLER2);
|
||
|
|
int ofs = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int len = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int val = random.nextInt(256);
|
||
|
|
set(b1, ofs, len, val);
|
||
|
|
int ofs2 = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
unsafe.copyMemory(b1, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs,
|
||
|
|
null, b2 + ofs2, len);
|
||
|
|
check(unsafe, b2, 0, ofs2 - 1, FILLER2);
|
||
|
|
check(unsafe, b2, ofs2, len, val);
|
||
|
|
check(unsafe, b2, ofs2 + len, BUFFER_SIZE - (ofs2 + len), FILLER2);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void testCopyRawMemoryToByteArray(Unsafe unsafe) throws Exception {
|
||
|
|
System.out.println("Testing copyMemory() for raw memory to byte[]...");
|
||
|
|
long b1 = getMemory(BUFFER_SIZE);
|
||
|
|
byte[] b2 = new byte[BUFFER_SIZE];
|
||
|
|
for (int i = 0; i < N; i++) {
|
||
|
|
set(unsafe, b1, 0, BUFFER_SIZE, FILLER);
|
||
|
|
set(b2, 0, BUFFER_SIZE, FILLER2);
|
||
|
|
int ofs = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int len = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int val = random.nextInt(256);
|
||
|
|
set(unsafe, b1, ofs, len, val);
|
||
|
|
int ofs2 = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
unsafe.copyMemory(null, b1 + ofs,
|
||
|
|
b2, Unsafe.ARRAY_BYTE_BASE_OFFSET + ofs2, len);
|
||
|
|
check(b2, 0, ofs2 - 1, FILLER2);
|
||
|
|
check(b2, ofs2, len, val);
|
||
|
|
check(b2, ofs2 + len, BUFFER_SIZE - (ofs2 + len), FILLER2);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void testCopyRawMemoryToRawMemory(Unsafe unsafe) throws Exception {
|
||
|
|
System.out.println("Testing copyMemory() for raw memory to raw memory...");
|
||
|
|
long b1 = getMemory(BUFFER_SIZE);
|
||
|
|
long b2 = getMemory(BUFFER_SIZE);
|
||
|
|
for (int i = 0; i < N; i++) {
|
||
|
|
set(unsafe, b1, 0, BUFFER_SIZE, FILLER);
|
||
|
|
set(unsafe, b2, 0, BUFFER_SIZE, FILLER2);
|
||
|
|
int ofs = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int len = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
int val = random.nextInt(256);
|
||
|
|
set(unsafe, b1, ofs, len, val);
|
||
|
|
int ofs2 = random.nextInt(BUFFER_SIZE / 2);
|
||
|
|
unsafe.copyMemory(null, b1 + ofs,
|
||
|
|
null, b2 + ofs2, len);
|
||
|
|
check(unsafe, b2, 0, ofs2 - 1, FILLER2);
|
||
|
|
check(unsafe, b2, ofs2, len, val);
|
||
|
|
check(unsafe, b2, ofs2 + len, BUFFER_SIZE - (ofs2 + len), FILLER2);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static Unsafe getUnsafe() throws Exception {
|
||
|
|
Field f = Unsafe.class.getDeclaredField("theUnsafe");
|
||
|
|
f.setAccessible(true);
|
||
|
|
return (Unsafe)f.get(null);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void main(String[] args) throws Exception {
|
||
|
|
Unsafe unsafe = getUnsafe();
|
||
|
|
|
||
|
|
testSetByteArray(unsafe);
|
||
|
|
testSetRawMemory(unsafe);
|
||
|
|
testCopyByteArrayToByteArray(unsafe);
|
||
|
|
testCopyByteArrayToRawMemory(unsafe);
|
||
|
|
testCopyRawMemoryToByteArray(unsafe);
|
||
|
|
testCopyRawMemoryToRawMemory(unsafe);
|
||
|
|
|
||
|
|
System.out.println("OK");
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|