Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- api:documentation:threads:start [2024/12/04 10:29] – [Monitorkonzept mit der Klasse Semaphore] martin
+++ api:documentation:threads:start [2025/03/05 10:26] (aktuell) – [synchronized-Block] martin
@@ Zeile 258: / Zeile 258: @@
 <HTML>
-<div class="java-online" style="height: 60vh; width: 90%" data-java-online="{'withBottomPanel': false, 'id': 'ConsumerProducer134'}">
+<div class="java-online" style="height: 60vh; width: 90%" data-java-online="{'withBottomPanel': true, 'id': 'ConsumerProducer134'}">
 <script type="text/plain" title="Main.java">
-BlockingQueue queue = new BlockingQueue<>(5);
+BlockingQueue<String> queue = new BlockingQueue<>(5);
 for (int i = 0; i < 3; i++) {
-   Producer p = new Producer(queue, 100, i);
+   new Producer(queue, 100, i);
-   MyConsumer c = new MyConsumer(queue, 100, i);
+   new MyConsumer(queue, 100, i);
 }
@@ Zeile 358: / Zeile 358: @@
 </div>
 </HTML>
+===== synchronized-Block =====
+<HTML>
+<div class="java-online" style="height: 60vh; width: 90%" data-java-online="{'withBottomPanel': false, 'id': 'ThreadTest2'}">
+<script type="text/plain" title="ThreadTest1.java">
+Counter counter = new Counter();
+for (int i = 0; i < 3; i++) {
+   Incrementer inc = new Incrementer(counter, 1e6, i);
+   Thread t = new Thread(inc);
+   t.setName("Thread " + i);
+   t.start();
+}
+class Counter {
+   long counter = 0;
+}
+class Incrementer implements Runnable {
+   Counter counter;
+   long increment = 0;
+   int index;
+   Incrementer(Counter counter, long increment, int index) {
+      this.increment = increment;
+      this.counter = counter;
+      this.index = index;
+   }
+   public void run() {
+      for (long i = 0; i < increment; i++) {
+         if(i % (increment/10) == 0) println("Thread " + index + ": " + i);
+         synchronized (counter) {
+            long i = counter.counter;
+            i++;
+            counter.counter = i;
+         }
+      }
+      println("Thread " + index + " done. Counter: " + counter.counter);
+   }
+}
+</script>
+</div>
+</HTML>