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Java example source code file (ByteBufBenchmark.java)

This example Java source code file (ByteBufBenchmark.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

abstractmicrobenchmark, benchmark, byte, bytebuf, bytebufbenchmark, bytebuffer, nio, setup, teardown

The ByteBufBenchmark.java Java example source code

/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you 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 io.netty.microbench.buffer;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.PooledByteBufAllocator;
import io.netty.buffer.Unpooled;
import io.netty.microbench.util.AbstractMicrobenchmark;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.TearDown;

import java.nio.ByteBuffer;

public class ByteBufBenchmark extends AbstractMicrobenchmark {
    static {
        System.setProperty("io.netty.buffer.bytebuf.checkAccessible", "false");
    }
    private static final byte BYTE = '0';

    private ByteBuffer byteBuffer;
    private ByteBuffer directByteBuffer;
    private ByteBuf buffer;
    private ByteBuf directBuffer;
    private ByteBuf directBufferPooled;

    @Setup
    public void setup() {
        byteBuffer = ByteBuffer.allocate(8);
        directByteBuffer = ByteBuffer.allocateDirect(8);
        buffer = Unpooled.buffer(8);
        directBuffer = Unpooled.directBuffer(8);
        directBufferPooled = PooledByteBufAllocator.DEFAULT.directBuffer(8);
    }

    @TearDown
    public void tearDown() {
        buffer.release();
        directBuffer.release();
        directBufferPooled.release();
    }

    @Benchmark
    public void setByteBufferHeap() {
        byteBuffer.put(0, BYTE);
    }

    @Benchmark
    public void setByteBufferDirect() {
        directByteBuffer.put(0, BYTE);
    }

    @Benchmark
    public void setByteBufHeap() {
        buffer.setByte(0, BYTE);
    }

    @Benchmark
    public void setByteBufDirect() {
        directBuffer.setByte(0, BYTE);
    }

    @Benchmark
    public void setByteBufDirectPooled() {
        directBufferPooled.setByte(0, BYTE);
    }
}

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