Is it hunger?

Question

I found a piece of code in which the thread seems to be starving. The following is a simplified example. Is this an example of hunger? What is the reason why the thread does not end?

Note. Changing the sleep mode to 1 sometimes leads to completion. Commented Thread.yield () will solve the problem (for me).

public class Foo {

    public static boolean finished = false;

    public static void main(String[] args) {

          Runnable worker = new Runnable() {

                 @Override
                 public void run() {

                      try {
                           Thread.sleep(10);
                      } catch (InterruptedException e) {
                          // TODO Auto-generated catch block
                          e.printStackTrace();
                      }

                      finished = true;
                 }
            };

            new Thread(worker).start();

            while (!finished) {
//          Thread.yield();
        }
    }
}

Answer 1

You probably need to get information about the Java memory model. Multithreading is not just the interleaving of threads; it is about the visibility of actions from one thread to another.

concurrency: , , , () . , volatile , - ( , ).

finished - , -, . ,

while (!finished);

if (!finished) while (true);

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, : " ": , , - , .

Answer 2

, . Starvation , . ? "", .