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| package io.github.ivanvergiliev; | |
| public class NonVolatileFlag { | |
| private static boolean flag = false; | |
| public static class FlagChecker implements Runnable { | |
| public void run() { | |
| long iter = 0; | |
| while (flag == false) { | |
| ++iter; | |
| // Wait and do nothing. | |
| } | |
| } | |
| } | |
| public static class FlagSetter implements Runnable { | |
| public void run() { | |
| int count = 0; | |
| while (true) { | |
| ++count; | |
| if (count > 100_000) { | |
| break; | |
| } | |
| } | |
| flag = true; | |
| } | |
| } | |
| public static void main(String[] args) throws InterruptedException { | |
| for (int i = 0; ; ++i) { | |
| System.out.println("Running iteration " + i); | |
| flag = false; | |
| Thread checker = new Thread(new FlagChecker()); | |
| Thread setter = new Thread(new FlagSetter()); | |
| checker.start(); | |
| setter.start(); | |
| checker.join(); | |
| } | |
| } | |
| } |
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