set the previous head to null in CQueue

Signed-off-by: Keshava Munegowda <[email protected]>
kmgowda · May 24, 2024 · 8358ff3 · 8358ff3
1 parent 9f928ce
commit 8358ff3
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/perl/src/main/java/io/perl/api/impl/CQueue.java b/perl/src/main/java/io/perl/api/impl/CQueue.java
@@ -64,7 +64,8 @@ public T poll() {
         if (cur == null) {
             return null;
         }
-        HEAD.set(this, cur);
+        Object oldHead = HEAD.getAndSet(this, cur);
+        oldHead = null;    //might help the Java garbage collector
         return (T) ITEM.getAndSetRelease(cur, null);
     }