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How can we prevent busy waiting in Java?

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Pragya Keshap answered on February 4, 2023 Popularity 1/10 Helpfulness 1/10

answer How can we prevent busy waiting in Java?

How can we prevent busy waiting in Java?

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There is a simple way to prevent busy-waiting in Java. We can just

put the current thread to sleep for given amount of time.

It can be done by calling sleep() method of java.lang.Thread class.

We can pass the number of milliseconds to sleep() method as an

argument

    Object lock = new Object(); // shared object to synchronize on
    int doneCount = 0;
    Thread thread1 = new Thread(new Runnable() {
        public void run() {
            // ...
            // do sub task 1
            // ...
            synchronized(lock) {
                doneCount++;
                lock.notify();
            }
        }
    });
    Thread thread2 = new Thread(new Runnable() {
        public void run() {
            // ...
            // do sub task 2
            // ...
            synchronized(lock) {
                doneCount++;
                lock.notify();
            }
        }
    });
 
    // this is the main thread again
    synchronized(lock) {
        thread1.start();
        thread2.start();
 
        while(doneCount < 2) {
            lock.wait();
        }
    }
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https://josephmate.wordpress.com/2016/02/04/how-to-avoid-busy-waiting/

Popularity 1/10 Helpfulness 1/10 Language java

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Tags: java

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Contributed on Feb 04 2023

Pragya Keshap

0 Answers Avg Quality 2/10

How can we prevent busy waiting in Java?

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