/*
* Copyright 2014 Higher Frequency Trading
*
* http://www.higherfrequencytrading.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.openhft.lang.io.serialization.direct;
import org.junit.Test;
import static net.openhft.lang.io.AbstractBytes.UNSIGNED_INT_MASK;
import static net.openhft.lang.io.NativeBytes.UNSAFE;
import static net.openhft.lang.io.serialization.direct.DirectSerializationMetadata.*;
import static net.openhft.lang.io.serialization.direct.TestClasses.*;
import static org.junit.Assert.assertEquals;
public class DirectSerializationMetadataTest {
@Test
public void primitives1Metadata() {
unsafeClassHeaderSize64BitCompressedOops(new Primitives1());
SerializationMetadata serializationMetadata = extractMetadata(Introspect.fields(Primitives1.class));
assertEquals(OBJECT_HEADER_SIZE, serializationMetadata.start);
assertEquals(4, serializationMetadata.length);
}
@Test
public void primitives2Metadata() {
unsafeClassHeaderSize64BitCompressedOops(new Primitives2());
SerializationMetadata serializationMetadata = extractMetadata(Introspect.fields(Primitives2.class));
assertEquals(OBJECT_HEADER_SIZE, serializationMetadata.start);
assertEquals(12, serializationMetadata.length);
}
@Test
public void primitives3Metadata() {
unsafeClassHeaderSize64BitCompressedOops(new Primitives3());
SerializationMetadata serializationMetadata = extractMetadata(Introspect.fields(Primitives3.class));
assertEquals(OBJECT_HEADER_SIZE, serializationMetadata.start);
assertEquals(12, serializationMetadata.length);
}
@Test
public void primitives4Metadata() {
unsafeClassHeaderSize64BitCompressedOops(new Primitives4());
SerializationMetadata serializationMetadata = extractMetadata(Introspect.fields(Primitives4.class));
assertEquals(OBJECT_HEADER_SIZE, serializationMetadata.start);
assertEquals(4, serializationMetadata.length);
}
@Test
public void primitives5Metadata() {
unsafeClassHeaderSize64BitCompressedOops(new Primitives5());
SerializationMetadata serializationMetadata = extractMetadata(Introspect.fields(Primitives5.class));
assertEquals(OBJECT_HEADER_SIZE, serializationMetadata.start);
assertEquals(12, serializationMetadata.length);
}
@Test
public void primitives6Metadata() {
unsafeClassHeaderSize64BitCompressedOops(new Primitives6());
SerializationMetadata serializationMetadata = extractMetadata(Introspect.fields(Primitives6.class));
assertEquals(OBJECT_HEADER_SIZE, serializationMetadata.start);
assertEquals(28, serializationMetadata.length);
}
private void unsafeClassHeaderSize64BitCompressedOops(Object instance) {
if (System.getProperty("useUnsafeClassHeaders") != null) {
long narrowKlassPointer = UNSAFE.getInt(instance, NATIVE_WORD_SIZE) & UNSIGNED_INT_MASK;
long wideKlassPointer = narrowKlassPointer << 3;
long sizeField = wideKlassPointer + 3 * UNSAFE.addressSize();
System.out.println(String.format("Size of %s is %s",
instance.getClass().getName(),
UNSAFE.getAddress(sizeField) & UNSIGNED_INT_MASK));
}
}
}