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/*
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* Copyright (c) 2015, 2016, 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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import org.testng.annotations.BeforeClass;
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import org.testng.annotations.DataProvider;
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import java.lang.invoke.VarHandle;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.EnumSet;
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import java.util.List;
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import java.util.function.Function;
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public abstract class VarHandleBaseByteArrayTest extends VarHandleBaseTest {
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enum MemoryMode {
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ALIGNED(0, false), UNALIGNED(0, true),
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BIG_ENDIAN(1, false), LITTLE_ENDIAN(1, true),
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READ_WRITE(2, false), READ_ONLY(2, true),;
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final int bit;
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final int value;
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MemoryMode(int bit, boolean value) {
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this.bit = bit;
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this.value = value ? 1 << bit : 0;
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}
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boolean isSet(int bitSet) {
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return (bitSet & (1 << bit)) == value;
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}
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static int bitSet(MemoryMode... modes) {
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if (modes == null) return 0;
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int set = 0;
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for (MemoryMode m : modes) {
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set = (set & ~(1 << m.bit)) | m.value;
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}
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return set;
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}
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static EnumSet<MemoryMode> enumSet(int bitSet) {
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EnumSet<MemoryMode> es = EnumSet.noneOf(MemoryMode.class);
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for (MemoryMode m : values()) {
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if (m.isSet(bitSet)) {
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es.add(m);
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}
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}
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return es;
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}
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}
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static class Source<T> {
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final T s;
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final int memoryModes;
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public Source(T s, MemoryMode... modes) {
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this.s = s;
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memoryModes = MemoryMode.bitSet(modes);
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}
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@Override
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public String toString() {
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return s.getClass().getCanonicalName() + " " + MemoryMode.enumSet(memoryModes);
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}
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}
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static abstract class ByteArrayViewSource<T> extends Source<T> {
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public ByteArrayViewSource(T t, MemoryMode... modes) {
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super(t, modes);
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}
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abstract void fill(byte value);
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abstract void fill(byte[] values);
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}
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static class ByteArraySource extends ByteArrayViewSource<byte[]> {
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public ByteArraySource(byte[] bytes, MemoryMode... modes) {
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super(bytes, modes);
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}
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void fill(byte value) {
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Arrays.fill(s, value);
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}
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void fill(byte[] values) {
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for (int i = 0; i < s.length; i++) {
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s[i] = values[i % values.length];
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}
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}
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}
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static class ByteBufferSource extends ByteArrayViewSource<ByteBuffer> {
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public ByteBufferSource(ByteBuffer buffer, MemoryMode... modes) {
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super(buffer, modes);
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}
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void fill(byte value) {
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for (int i = 0; i < s.limit(); i++) {
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s.put(i, value);
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}
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}
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void fill(byte[] values) {
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for (int i = 0; i < s.limit(); i++) {
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s.put(i, values[i % values.length]);
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}
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}
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@Override
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public String toString() {
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return s + " " + MemoryMode.enumSet(memoryModes);
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}
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}
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static class ByteBufferReadOnlySource extends ByteBufferSource {
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final ByteBuffer rwSource;
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public ByteBufferReadOnlySource(ByteBuffer roBuffer, ByteBuffer rwSource, MemoryMode... modes) {
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super(roBuffer, modes);
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this.rwSource = rwSource;
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}
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void fill(byte value) {
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for (int i = 0; i < rwSource.limit(); i++) {
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rwSource.put(i, value);
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}
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}
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void fill(byte[] values) {
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for (int i = 0; i < rwSource.limit(); i++) {
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rwSource.put(i, values[i % values.length]);
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}
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}
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}
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static class VarHandleSource extends Source<VarHandle> {
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VarHandleSource(VarHandle vh, MemoryMode... modes) {
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super(vh, modes);
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}
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boolean matches(ByteArrayViewSource<?> bav) {
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return s.coordinateTypes().get(0).isAssignableFrom(bav.s.getClass());
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}
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@Override
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public String toString() {
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return " VarHandle " + MemoryMode.enumSet(memoryModes);
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}
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}
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static class VarHandleSourceAccessTestCase extends AccessTestCase<VarHandleSource> {
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final ByteArrayViewSource<?> bs;
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final VarHandleSource vhs;
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VarHandleSourceAccessTestCase(String desc, ByteArrayViewSource<?> bs, VarHandleSource vhs, AccessTestAction<VarHandleSource> ata) {
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this(desc, bs, vhs, ata, true);
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}
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VarHandleSourceAccessTestCase(String desc, ByteArrayViewSource<?> bs, VarHandleSource vhs, AccessTestAction<VarHandleSource> ata, boolean loop) {
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super(vhs + " -> " + bs + " " + desc, ata, loop);
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this.bs = bs;
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this.vhs = vhs;
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}
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@Override
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VarHandleSource get() {
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return vhs;
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}
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}
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static double rotateLeft(double i, int distance) {
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return Double.longBitsToDouble(
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Long.rotateLeft(Double.doubleToRawLongBits(i), distance));
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}
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static double rotateRight(double i, int distance) {
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return Double.longBitsToDouble(
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Long.rotateRight(Double.doubleToRawLongBits(i), distance));
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}
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static float rotateLeft(float i, int distance) {
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return Float.intBitsToFloat(
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Integer.rotateLeft(Float.floatToRawIntBits(i), distance));
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}
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static float rotateRight(float i, int distance) {
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return Float.intBitsToFloat(
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Integer.rotateRight(Float.floatToRawIntBits(i), distance));
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}
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static long rotateLeft(long i, int distance) {
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return Long.rotateLeft(i, distance);
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}
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static long rotateRight(long i, int distance) {
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return Long.rotateRight(i, distance);
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}
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static int rotateLeft(int i, int distance) {
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return Integer.rotateLeft(i, distance);
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}
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static int rotateRight(int i, int distance) {
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return Integer.rotateRight(i, distance);
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}
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static short rotateLeft(short i, int distance) {
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int v = (i << 16) | i;
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v = Integer.rotateLeft(v, distance);
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return (short) v;
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}
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static short rotateRight(short i, int distance) {
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int v = (i << 16) | i;
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v = Integer.rotateRight(v, distance);
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return (short) v;
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}
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static char rotateLeft(char i, int distance) {
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int v = (i << 16) | i;
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v = Integer.rotateLeft(v, distance);
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return (char) v;
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}
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static char rotateRight(char i, int distance) {
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int v = (i << 16) | i;
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v = Integer.rotateRight(v, distance);
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return (char) v;
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}
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static final int LENGTH_BYTES = 32;
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byte[] array;
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List<ByteArrayViewSource<?>> bavss;
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List<VarHandleSource> vhss;
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public void setupByteSources() {
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array = new byte[LENGTH_BYTES];
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// Native endianess
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MemoryMode ne = ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN
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? MemoryMode.BIG_ENDIAN : MemoryMode.LITTLE_ENDIAN;
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bavss = new ArrayList<>();
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// byte[] source
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ByteArraySource a =
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new ByteArraySource(array,
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ne, MemoryMode.READ_WRITE);
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bavss.add(a);
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// Combinations of ByteBuffer sources
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ByteBufferSource hbb =
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new ByteBufferSource(ByteBuffer.wrap(array),
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MemoryMode.ALIGNED, ne, MemoryMode.READ_WRITE);
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bavss.add(hbb);
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ByteBufferReadOnlySource hbb_ro =
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new ByteBufferReadOnlySource(hbb.s.asReadOnlyBuffer(), hbb.s,
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MemoryMode.ALIGNED, ne, MemoryMode.READ_ONLY);
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bavss.add(hbb_ro);
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ByteBufferSource hbb_offset_aligned =
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new ByteBufferSource(ByteBuffer.wrap(array, array.length / 4, array.length / 2).slice(),
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MemoryMode.ALIGNED, ne, MemoryMode.READ_WRITE);
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bavss.add(hbb_offset_aligned);
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ByteBufferReadOnlySource hbb_offset_aligned_ro =
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new ByteBufferReadOnlySource(hbb_offset_aligned.s.asReadOnlyBuffer(), hbb_offset_aligned.s,
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MemoryMode.ALIGNED, ne, MemoryMode.READ_ONLY);
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bavss.add(hbb_offset_aligned_ro);
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ByteBufferSource hbb_offset_unaligned =
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new ByteBufferSource(ByteBuffer.wrap(array, array.length / 4 - 1, array.length / 2).slice(),
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MemoryMode.UNALIGNED, ne, MemoryMode.READ_WRITE);
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bavss.add(hbb_offset_unaligned);
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ByteBufferReadOnlySource hbb_offset_unaligned_ro =
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new ByteBufferReadOnlySource(hbb_offset_unaligned.s.asReadOnlyBuffer(), hbb_offset_unaligned.s,
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MemoryMode.UNALIGNED, ne, MemoryMode.READ_ONLY);
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bavss.add(hbb_offset_unaligned_ro);
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ByteBufferSource dbb =
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new ByteBufferSource(ByteBuffer.allocateDirect(array.length),
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MemoryMode.ALIGNED, ne, MemoryMode.READ_WRITE);
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bavss.add(dbb);
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ByteBufferReadOnlySource dbb_ro =
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new ByteBufferReadOnlySource(dbb.s.asReadOnlyBuffer(), dbb.s,
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MemoryMode.ALIGNED, ne, MemoryMode.READ_ONLY);
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bavss.add(dbb_ro);
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ByteBufferSource dbb_offset_aligned =
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new ByteBufferSource(dbb.s.slice().position(array.length / 4).limit(array.length / 4 + array.length / 2).slice(),
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MemoryMode.ALIGNED, ne, MemoryMode.READ_WRITE);
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bavss.add(dbb_offset_aligned);
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ByteBufferReadOnlySource dbb_offset_aligned_ro =
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new ByteBufferReadOnlySource(dbb_offset_aligned.s.asReadOnlyBuffer(), dbb_offset_aligned.s,
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MemoryMode.ALIGNED, ne, MemoryMode.READ_ONLY);
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bavss.add(dbb_offset_aligned_ro);
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ByteBufferSource dbb_offset_unaligned =
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new ByteBufferSource(dbb.s.slice().position(array.length / 4 - 1).limit(array.length / 4 - 1 + array.length / 2).slice(),
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MemoryMode.UNALIGNED, ne, MemoryMode.READ_WRITE);
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bavss.add(dbb_offset_unaligned);
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ByteBufferReadOnlySource dbb_offset_unaligned_ro =
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new ByteBufferReadOnlySource(dbb_offset_unaligned.s.asReadOnlyBuffer(), dbb_offset_unaligned.s,
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MemoryMode.UNALIGNED, ne, MemoryMode.READ_ONLY);
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bavss.add(dbb_offset_unaligned_ro);
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}
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@BeforeClass
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public void setup() {
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setupByteSources();
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setupVarHandleSources();
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}
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abstract void setupVarHandleSources();
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@DataProvider
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public Object[][] varHandlesProvider() throws Exception {
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return vhss.stream().map(cvh -> new Object[]{cvh}).toArray(Object[][]::new);
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}
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@DataProvider
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public Object[][] typesProvider() throws Exception {
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List<java.lang.Class<?>> aepts = Arrays.asList(byte[].class, int.class);
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List<java.lang.Class<?>> bbpts = Arrays.asList(ByteBuffer.class, int.class);
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Function<VarHandle, List<Class<?>>> vhToPts = vh ->
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vh.coordinateTypes().get(0) == byte[].class ? aepts : bbpts;
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return vhss.stream().map(vh -> new Object[]{vh.s, vhToPts.apply(vh.s)}).toArray(Object[][]::new);
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}
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}
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