| 1 | import java.util.ArrayList;
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| 2 | import java.util.List;
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| 3 | import java.util.Random;
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| 4 | import java.util.concurrent.Semaphore;
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| 5 |
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| 6 | public class ProcessorSolution extends Thread {
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| 7 |
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| 8 | public static Semaphore canGenerate = new Semaphore(5);
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| 9 | public static Semaphore processEvent = new Semaphore(0);
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| 10 |
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| 11 | public static Random random = new Random();
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| 12 | static List<EventGeneratorSolution> scheduled = new ArrayList<>();
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| 13 |
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| 14 | public static void main(String[] args) throws InterruptedException {
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| 15 | // TODO: kreirajte Processor i startuvajte go negovoto pozadinsko izvrsuvanje
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| 16 | Processor processor = new Processor();
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| 17 | processor.start();
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| 18 |
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| 19 |
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| 20 | for (int i = 0; i < 100; i++) {
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| 21 | EventGeneratorSolution eventGenerator = new EventGeneratorSolution();
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| 22 | register(eventGenerator);
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| 23 | //TODO: startuvajte go eventGenerator-ot
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| 24 | eventGenerator.start();
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| 25 | }
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| 26 |
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| 27 |
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| 28 | // TODO: Cekajte 20000ms za Processor-ot da zavrsi
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| 29 | processor.join(20_000);
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| 30 |
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| 31 | // TODO: ispisete go statusot od izvrsuvanjeto
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| 32 | if (processor.isAlive()) {
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| 33 | processor.interrupt();
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| 34 | System.out.println("Terminated scheduling");
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| 35 | } else {
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| 36 | System.out.println("Finished scheduling");
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| 37 | }
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| 38 |
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| 39 | }
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| 40 |
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| 41 | public static void register(EventGeneratorSolution generator) {
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| 42 | scheduled.add(generator);
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| 43 | }
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| 44 |
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| 45 | /**
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| 46 | * Ne smee da bide izvrsuva paralelno so generate() metodot
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| 47 | */
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| 48 | public static void process() {
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| 49 | System.out.println("processing event");
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| 50 | }
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| 51 |
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| 52 |
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| 53 | public void run() {
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| 54 |
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| 55 | while (!scheduled.isEmpty()) {
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| 56 | try {
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| 57 | // TODO: cekanje na nov generiran event
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| 58 | processEvent.acquire();
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| 59 |
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| 60 | // TODO: povikajte go negoviot process() metod
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| 61 | canGenerate.acquire(5);
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| 62 | process();
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| 63 | canGenerate.release(5);
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| 64 | } catch (InterruptedException e) {
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| 65 | e.printStackTrace();
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| 66 | }
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| 67 | }
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| 68 |
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| 69 | System.out.println("Done scheduling!");
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| 70 | }
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| 71 | }
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| 72 |
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| 73 |
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| 74 | class EventGeneratorSolution extends Thread {
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| 75 |
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| 76 | public Integer duration;
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| 77 |
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| 78 | public EventGeneratorSolution() throws InterruptedException {
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| 79 | this.duration = Processor.random.nextInt(1000);
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| 80 | }
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| 81 |
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| 82 | /**
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| 83 | * Ne smee da bide povikan paralelno kaj poveke od 5 generatori
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| 84 | */
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| 85 | public static void generate() {
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| 86 | System.out.println("Generating event: ");
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| 87 | }
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| 88 |
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| 89 | @Override
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| 90 | public void run() {
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| 91 | try {
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| 92 | Thread.sleep(this.duration);
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| 93 | ProcessorSolution.canGenerate.acquire();
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| 94 | generate();
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| 95 | ProcessorSolution.processEvent.release();
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| 96 | ProcessorSolution.canGenerate.release();
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| 97 | } catch (InterruptedException e) {
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| 98 | e.printStackTrace();
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| 99 | }
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| 100 | }
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| 101 |
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| 102 |
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| 103 | } |
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