HeapByteBufBenchmark Class — netty Architecture

Source Code

microbench/src/main/java/io/netty/microbench/buffer/HeapByteBufBenchmark.java lines 28–111

public class HeapByteBufBenchmark extends AbstractMicrobenchmark {

    @Param({
            "true",
            "false",
    })
    public String checkBounds;

    private ByteBuf unsafeBuffer;
    private ByteBuf buffer;

    private static ByteBuf newBuffer(String classname) throws Exception {
        // Using reflection to workaround package-private implementations.
        Class<?> clazz = Class.forName(classname);
        Constructor<?> constructor = clazz.getDeclaredConstructor(ByteBufAllocator.class, int.class, int.class);
        constructor.setAccessible(true);
        return (ByteBuf) constructor.newInstance(ByteBufAllocator.DEFAULT, 8, Integer.MAX_VALUE);
    }

    @Setup
    public void setup() throws Exception {
        System.setProperty("io.netty.buffer.bytebuf.checkBounds", checkBounds);
        unsafeBuffer = newBuffer("io.netty.buffer.UnpooledUnsafeHeapByteBuf");
        buffer = newBuffer("io.netty.buffer.UnpooledHeapByteBuf");
        unsafeBuffer.writeLong(1L);
        buffer.writeLong(1L);
    }

    @TearDown
    public void destroy() {
        unsafeBuffer.release();
        buffer.release();
    }

    @Benchmark
    public byte getByteUnsafe() {
        return unsafeBuffer.getByte(0);
    }

    @Benchmark
    public short getByte() {
        return buffer.getByte(0);
    }

    @Benchmark
    public short getShortUnsafe() {
        return unsafeBuffer.getShort(0);
    }

    @Benchmark
    public short getShort() {
        return buffer.getShort(0);
    }

    @Benchmark
    public int getMediumUnsafe() {
        return unsafeBuffer.getMedium(0);
    }

    @Benchmark
    public int getMedium() {
        return buffer.getMedium(0);
    }

    @Benchmark
    public int getIntUnsafe() {
        return unsafeBuffer.getInt(0);
    }

    @Benchmark
    public int getInt() {
        return buffer.getInt(0);
    }

    @Benchmark
    public long getLongUnsafe() {
        return unsafeBuffer.getLong(0);
    }

    @Benchmark
    public long getLong() {