z.offheap.buffer.contrast.ContrastTestNettyByteBuf.java Source code

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Here is the source code for z.offheap.buffer.contrast.ContrastTestNettyByteBuf.java

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/**
 * Copyright 2013, Landz and its contributors. All rights reserved.
 *
 *    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 z.offheap.buffer.contrast;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.PooledByteBufAllocator;
import org.junit.AfterClass;
import org.junit.Test;
import z.exception.ContractViolatedException;
import z.offheap.buffer.Buffer;
import z.offheap.buffer.ByteBuffer;
import z.util.Unsafes;

import java.util.concurrent.CountDownLatch;
import java.util.function.BooleanSupplier;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.core.Is.is;
import static z.offheap.zmalloc.Allocator.*;
import static z.offheap.buffer.Buffers.*;

/**
 * Netty ByteBuf: time cost of 50,000,000 times OP in 720,535,569 nanoseconds with sum -2935351363880267904
 */
public class ContrastTestNettyByteBuf {
    public static final int WARMUP_COUNT = 20_000;
    private static final int COUNT = 50_000_000;

    @Test
    public void testNettyByteBuf() throws Exception {
        long s, t, sum = 0;

        ByteBuf bn = PooledByteBufAllocator.DEFAULT.directBuffer(16);

        //warm-up
        for (int i = 0; i < WARMUP_COUNT; i++) {
            doWithNettyByteBuf(bn, i);
        }

        //================================netty contrast
        System.gc();
        Thread.sleep(3000L);

        s = System.nanoTime();
        for (int i = 0; i < COUNT; i++) {
            sum += doWithNettyByteBuf(bn, i);
        }
        t = System.nanoTime() - s;
        System.out.printf("Netty ByteBuf: time cost of %,d times OP in %,d nanoseconds with sum %d\n", COUNT, t,
                sum);
    }

    private long doWithNettyByteBuf(ByteBuf bn, int i) {
        bn.clear().writeByte(i).writeByte(i).writeShort(i).writeInt(i).writeLong(i);

        long rnb1 = bn.readLong();
        long rnb2 = bn.readLong();

        return rnb1 + rnb2;
    }

}