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/*
* Copyright (c) 2024, 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
* @summary Test SegmentBulkOperations::contentHash
* @modules java.base/jdk.internal.foreign
* @run junit TestSegmentBulkOperationsContentHash
*/
import jdk.internal.foreign.AbstractMemorySegmentImpl;
import jdk.internal.foreign.SegmentBulkOperations;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
import java.lang.foreign.Arena;
import java.lang.foreign.MemorySegment;
import java.lang.foreign.ValueLayout;
import java.util.Arrays;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.atomic.AtomicReference;
import java.util.stream.IntStream;
import java.util.stream.Stream;
import static org.junit.jupiter.api.Assertions.*;
final class TestSegmentBulkOperationsContentHash {
@ParameterizedTest
@MethodSource("sizes")
@Disabled
void testHashValues(int len) {
try (var arena = Arena.ofConfined()) {
for (int i = Byte.MIN_VALUE; i <= Byte.MAX_VALUE ; i++) {
var segment = arena.allocate(len);
segment.fill((byte) i);
int hash = hash(segment);
int expected = Arrays.hashCode(segment.toArray(ValueLayout.JAVA_BYTE));
assertEquals(expected, hash, Arrays.toString(segment.toArray(ValueLayout.JAVA_BYTE)));
}
}
}
@ParameterizedTest
@MethodSource("sizes")
void testOffsets(int len) {
if (len < 2) {
return;
}
try (var arena = Arena.ofConfined()) {
for (int i = Byte.MIN_VALUE; i <= Byte.MAX_VALUE ; i++) {
var segment = arena.allocate(len);
segment.fill((byte) i);
int hash = hash(segment, 1, segment.byteSize() - 1);
MemorySegment slice = segment.asSlice(1, segment.byteSize() - 2);
byte[] arr = slice.toArray(ValueLayout.JAVA_BYTE);
System.out.println(Arrays.toString(arr));
int expected = Arrays.hashCode(arr);
assertEquals(expected, hash, Arrays.toString(segment.toArray(ValueLayout.JAVA_BYTE)));
}
}
}
@ParameterizedTest
@MethodSource("sizes")
void testOutOfBounds(int len) {
try (var arena = Arena.ofConfined()) {
var segment = arena.allocate(len);
assertThrows(IndexOutOfBoundsException.class,
() -> hash(segment, 0, segment.byteSize() + 1));
assertThrows(IndexOutOfBoundsException.class,
() -> hash(segment, 0, -1));
assertThrows(IndexOutOfBoundsException.class,
() -> hash(segment, -1, 0));
if (len > 2) {
assertThrows(IndexOutOfBoundsException.class,
() -> hash(segment, 2, 1));
}
}
}
@ParameterizedTest
@MethodSource("sizes")
void testConfinement(int len) {
try (var arena = Arena.ofConfined()) {
var segment = arena.allocate(len);
AtomicReference<RuntimeException> ex = new AtomicReference<>();
CompletableFuture<Void> future = CompletableFuture.runAsync(() -> {
try {
hash(segment);
} catch (RuntimeException e) {
ex.set(e);
}
});
future.join();
assertInstanceOf(WrongThreadException.class, ex.get());
}
}
@ParameterizedTest
@MethodSource("sizes")
void testScope(int len) {
var arena = Arena.ofConfined();
var segment = arena.allocate(len);
arena.close();
assertThrows(IllegalStateException.class, () -> hash(segment));
}
private static int hash(MemorySegment segment) {
return hash(segment, 0, segment.byteSize());
}
private static int hash(MemorySegment segment, long fromOffset, long toOffset) {
return SegmentBulkOperations.contentHash((AbstractMemorySegmentImpl) segment, fromOffset, toOffset);
}
private static final int MAX_SIZE = 1 << 10;
private static Stream<Arguments> sizes() {
return IntStream.of(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 23, 32, 63, 128, 256, 511, MAX_SIZE)
.boxed()
.map(Arguments::of);
}
}
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