package zad3;

public class TextsStandard {
    boolean newTxt = false;
    String txt = null;
    volatile boolean isFirstDone = false;
    long timeStart = 0;
    long timeEnd = 0;

    synchronized String getText() {
        while (newTxt == false)
            try {
                wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        newTxt = false;
        notifyAll();
        return txt;
    }

    synchronized void setText(String s) {
        while (newTxt == true)
            try {
                wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        newTxt = true;
        txt = s;
        notifyAll();
    }

    public void start() {
        timeStart = System.nanoTime();
    }

    public void finish() {
        timeEnd = System.nanoTime();
        System.out.println("Czas ze standardową synchronizacją (w nanosekundach): " + new Long(timeEnd - timeStart));
    }

}

public class StandardA extends Thread {
    TextsStandard texts=null;
    public StandardA()
    {
        texts=new TextsStandard();
    }
    @Override
    public void run() {
        new StandardB(texts).start();
        texts.start();
        for (int i=0;i<1000;i++)
        {
            texts.setText("a");
        }
        texts.isFirstDone=true;
        synchronized(System.out) {
        System.out.println(texts.isFirstDone);
        }
    }

}

public class StandardB extends Thread {
    TextsStandard texts = null;

    public StandardB(TextsStandard input) {
        texts = input;
    }

    @Override
    public void run() {
        while (texts.isFirstDone == false) {
            texts.getText();
        }

        texts.finish();
    }
}