Exer2

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import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.concurrent.*;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author francisco
 */
public class exer2 implements Runnable {

    String filename;
    Semaphore s;
    Semaphore s2;
    SharedCounter share;

    public exer2(Semaphore sem, Semaphore sem2, String filename, SharedCounter counter) {
        s = sem;
        s2 = sem2;
        this.filename = filename + ".txt";
        share = counter;

    }

    public void writeOnFile(int num) {
        int counter = share.getCounter();
        if (counter <= 10) {
            try {
                String text = ("Thread " + Thread.currentThread().getName() + " escreveu " + num + "x. Counter: " + counter + "\n");
                BufferedWriter writer = new BufferedWriter(new FileWriter(this.filename, true));
                writer.append(text);
                writer.close();
                System.out.println(text);
                Thread.sleep(1000);
            } catch (IOException ex) {

            } catch (InterruptedException ex) {
            }
        }
    }

    public void run() {
        System.out.println("Thread " + Thread.currentThread().getName() + " iniciou");

        try {
            s.acquire();
            share.incrementCounter();
            writeOnFile(1);
            s.release();

        } catch (InterruptedException ex) {

        }

        try {
            Thread.sleep(1000);
        } catch (InterruptedException ex) {

        }

        try {
            s2.acquire();
            share.incrementCounter();
            writeOnFile(2);
            s2.release();
        } catch (InterruptedException ex) {

        }

    }

    public static void main(String args[]) {
        String filename = args[0];
        SharedCounter share = new SharedCounter();
        Semaphore sem = new Semaphore(1);
        Semaphore sem2 = new Semaphore(1);

        for (int i = 0; i < 20; i++) {

            Thread th = new Thread(new exer2(sem, sem2, filename, share), "Th" + i);
            th.start();
        }

    }

}