resource_allocator_test.java

import java.util.Random;

public class App {
    public static void main(String[] args) {
        ResourceAllocator allocator = new ResourceAllocator();
        // Example usage with multiple "Processes"
        Runnable P0 = ( ) -> {
            ... // same code, different critical section time = 1000
        };
        Runnable P1 = () -> {
            ... // same code, different critical section time = 1000
        };
        Runnable P2 = () -> {
            Random random = new Random();
            int entry_delay=1000; int time_out=2000; int cs_time=4000; int exit_delay=2000;
            try {
                Thread.sleep(random.nextInt(entry_delay)); // Random process entry delay
                allocator.acquire(time_out); // Wait at most 2 seconds
                Thread.sleep(cs_time); // Simulate critical section
                allocator.release();
                Thread.sleep(random.nextInt(exit_delay)); // Random process exit delay
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
            }
        };

        Thread p0 = new Thread(P0, "Process 0"); Thread p1 = new Thread(P1, "Process 1");
        Thread p2 = new Thread(P2, "Process 2");
        p0.start(); p1.start(); p2.start();
    }
}