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Cyclic Barrier

Pragya Keshap answered on February 9, 2023 Popularity 5/10 Helpfulness 1/10

answer Cyclic Barrier

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Cyclic Barrier

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A CyclicBarrier is a synchronizer that allows a set of threads to wait for each other to reach a common execution point, also called a barrier.

CyclicBarriers are used in programs in which we have a fixed number of threads that must wait for each other to reach a common point before continuing execution.

public class CyclicBarrierDemo {

    // Previous code
 
    public void runSimulation(int numWorkers, int numberOfPartialResults) {
        NUM_PARTIAL_RESULTS = numberOfPartialResults;
        NUM_WORKERS = numWorkers;

        cyclicBarrier = new CyclicBarrier(NUM_WORKERS, new AggregatorThread());

        System.out.println("Spawning " + NUM_WORKERS
          + " worker threads to compute "
          + NUM_PARTIAL_RESULTS + " partial results each");
 
        for (int i = 0; i < NUM_WORKERS; i++) {
            Thread worker = new Thread(new NumberCruncherThread());
            worker.setName("Thread " + i);
            worker.start();
        }
    }

    public static void main(String[] args) {
        CyclicBarrierDemo demo = new CyclicBarrierDemo();
        demo.runSimulation(5, 3);
    }
}

https://www.baeldung.com/java-cyclic-barrier

Popularity 5/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: barrier cyclic java

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Contributed on Feb 09 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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Cyclic Barrier example

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A CyclicBarrier is a synchronization helping class from java.util.concurrent package that allows a set of threads to all wait for each other to reach at common barrier point.

CyclicBarrier is useful when a program involves a fixed sized party of threads that must occasionally wait for each other. The barrier is called cyclic because it can be re-used after the waiting threads are released that’s where it differs from CountDownLatch

package com.infotech.tasks;
 
import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;
 
public class PassengerThread extends Thread {
	private int duration;
	private CyclicBarrier barrier;
 
	public PassengerThread(int duration, CyclicBarrier barrier, String pname) {
		super(pname);
		this.duration = duration;
		this.barrier = barrier;
	}
 
	@Override
	public void run() {
		try {
			Thread.sleep(duration);
			System.out.println(Thread.currentThread().getName() + " is arrived.");
			
			int await = barrier.await();
			if(await == 0) {
				System.out.println("Four passengers have arrived so cab is going to start..");	
			}
		} catch (InterruptedException | BrokenBarrierException e) {
			e.printStackTrace();
		}
	}
}

https://kkjavatutorials.com/cyclicbarrier-example-in-java/

Popularity 5/10 Helpfulness 1/10 Language java

Source: kkjavatutorials.com

Tags: java barrier cyclic

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Contributed on Feb 09 2023

Pragya Keshap

0 Answers Avg Quality 2/10

Cyclic Barrier

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