高性能线程间消息通信框架库 disruptor 入门

最新推荐文章于 2024-02-23 14:29:33 发布

转载最新推荐文章于 2024-02-23 14:29:33 发布 · 256 阅读

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原文链接：https://my.oschina.net/rock117/blog/734599

文章标签：

#java #python

本文通过使用Java实现了一个典型的生产者与消费者模型的例子。该模型利用了Disruptor框架进行高性能的消息传递，其中生产者负责生成数据并将其发布到环形缓冲区中，而消费者则从环形缓冲区读取数据并进行处理。

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以下例子实现了生产者与消费者的经典例子

import java.nio.ByteBuffer;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;

import com.lmax.disruptor.RingBuffer;
import com.lmax.disruptor.dsl.Disruptor;

public class LongEventMain
{
//消费者代码

public static void handleEvent(LongEvent event, long sequence, boolean endOfBatch)
    {
        System.out.println(event);
    }

//生产者将数据初始化

public static void translate(LongEvent event, long sequence, ByteBuffer buffer)
    {
        event.set(buffer.getLong(0));
    }

    public static void main(String[] args) throws Exception
    {
        // Executor that will be used to construct new threads for consumers
        Executor executor = Executors.newCachedThreadPool();

// Specify the size of the ring buffer, must be power of 2.
int bufferSize = 1024;

// Construct the Disruptor
Disruptor<LongEvent> disruptor = new Disruptor<>(LongEvent::new, bufferSize, executor);

// Connect the handler
disruptor.handleEventsWith(LongEventMain::handleEvent);

// Start the Disruptor, starts all threads running
disruptor.start();

// Get the ring buffer from the Disruptor to be used for publishing.
RingBuffer<LongEvent> ringBuffer = disruptor.getRingBuffer();

        ByteBuffer bb = ByteBuffer.allocate(8);
        for (long l = 0; true; l++)
        {
            bb.putLong(0, l);

//生产者产生数据
            ringBuffer.publishEvent(LongEventMain::translate, bb);
            Thread.sleep(1000);
        }
    }
}

转载于:https://my.oschina.net/rock117/blog/734599