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Merge branch 'tomekl007-BAEL-614'

This commit is contained in:
Predrag Maric 2017-01-29 11:56:52 +01:00
parent 8d68b5bcf9 d38930100d
commit ad21e99e8e
3 changed files with 18 additions and 4 deletions
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6
core-java/src/main/java/com/baeldung/concurrent/blockingqueue/BlockingQueueUsage.java
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@ -8,15 +8,17 @@ public class BlockingQueueUsage {
int BOUND = 10;
int N_PRODUCERS = 4;
int N_CONSUMERS = Runtime.getRuntime().availableProcessors();
int poisonPill = Integer.MAX_VALUE;
int poisonPillPerProducer = N_CONSUMERS / N_PRODUCERS;
BlockingQueue<Integer> queue = new LinkedBlockingQueue<>(BOUND);
for (int i = 0; i < N_PRODUCERS; i++) {
new Thread(new NumbersProducer(queue)).start();
new Thread(new NumbersProducer(queue, poisonPill, poisonPillPerProducer)).start();
}
for (int j = 0; j < N_CONSUMERS; j++) {
new Thread(new NumbersConsumer(queue)).start();
new Thread(new NumbersConsumer(queue, poisonPill)).start();
}
}
}

7
core-java/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersConsumer.java
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@ -4,15 +4,20 @@ import java.util.concurrent.BlockingQueue;
public class NumbersConsumer implements Runnable {
private final BlockingQueue<Integer> queue;
private final int poisonPill;
public NumbersConsumer(BlockingQueue<Integer> queue) {
public NumbersConsumer(BlockingQueue<Integer> queue, int poisonPill) {
this.queue = queue;
this.poisonPill = poisonPill;
}
public void run() {
try {
while (true) {
Integer number = queue.take();
if (number.equals(poisonPill)) {
return;
}
String result = number.toString();
System.out.println(Thread.currentThread().getName() + " result: " + result);
}

9
core-java/src/main/java/com/baeldung/concurrent/blockingqueue/NumbersProducer.java
View File

@ -6,9 +6,13 @@ import java.util.concurrent.ThreadLocalRandom;
public class NumbersProducer implements Runnable {
private final BlockingQueue<Integer> numbersQueue;
private final int poisonPill;
private final int poisonPillPerProducer;
public NumbersProducer(BlockingQueue<Integer> numbersQueue) {
public NumbersProducer(BlockingQueue<Integer> numbersQueue, int poisonPill, int poisonPillPerProducer) {
this.numbersQueue = numbersQueue;
this.poisonPill = poisonPill;
this.poisonPillPerProducer = poisonPillPerProducer;
}
public void run() {
@ -23,5 +27,8 @@ public class NumbersProducer implements Runnable {
for (int i = 0; i < 100; i++) {
numbersQueue.put(ThreadLocalRandom.current().nextInt(100));
}
for (int j = 0; j < poisonPillPerProducer; j++) {
numbersQueue.put(poisonPill);
}
}
}