Atomic update

winterbe · winterbe · commit 463a55e9d238 · 2015-04-11T09:29:32.000+02:00
diff --git a/src/com/winterbe/java8/samples/concurrent/Atomic1.java b/src/com/winterbe/java8/samples/concurrent/Atomic1.java
@@ -18,6 +18,24 @@ public class Atomic1 {
     public static void main(String[] args) {
         testIncrement();
         testAccumulate();
+        testUpdate();
+    }
+
+    private static void testUpdate() {
+        atomicInt.set(0);
+
+        ExecutorService executor = Executors.newFixedThreadPool(2);
+
+        IntStream.range(0, NUM_INCREMENTS)
+                .forEach(i -> {
+                    Runnable task = () ->
+                            atomicInt.updateAndGet(n -> n + 2);
+                    executor.submit(task);
+                });
+
+        ConcurrentUtils.stop(executor);
+
+        System.out.format("Update: %d\n", atomicInt.get());
     }
 
     private static void testAccumulate() {
diff --git a/src/com/winterbe/java8/samples/concurrent/ConcurrentUtils.java b/src/com/winterbe/java8/samples/concurrent/ConcurrentUtils.java
@@ -11,7 +11,7 @@ public class ConcurrentUtils {
     public static void stop(ExecutorService executor) {
         try {
             executor.shutdown();
-            executor.awaitTermination(5, TimeUnit.SECONDS);
+            executor.awaitTermination(60, TimeUnit.SECONDS);
         }
         catch (InterruptedException e) {
             System.err.println("termination interrupted");

Original file line number	Diff line number	Diff line change
`@@ -11,7 +11,7 @@ public class ConcurrentUtils {`
`11`	`11`	`public static void stop(ExecutorService executor) {`
`12`	`12`	`try {`
`13`	`13`	`executor.shutdown();`
`14`		`- executor.awaitTermination(5, TimeUnit.SECONDS);`
	`14`	`+ executor.awaitTermination(60, TimeUnit.SECONDS);`
`15`	`15`	`}`
`16`	`16`	`catch (InterruptedException e) {`
`17`	`17`	`System.err.println("termination interrupted");`