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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: vemacs <d@nkmem.es>
Date: Wed, 23 Nov 2016 12:53:43 -0500
Subject: [PATCH] Misc Utils
diff --git a/src/main/java/com/destroystokyo/paper/utils/CachedSizeConcurrentLinkedQueue.java b/src/main/java/com/destroystokyo/paper/utils/CachedSizeConcurrentLinkedQueue.java
new file mode 100644
index 0000000000000000000000000000000000000000..5bb677ce585b856b3d3e589e29786a29619c56a7
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/utils/CachedSizeConcurrentLinkedQueue.java
@@ -0,0 +1,34 @@
+package com.destroystokyo.paper.utils;
+
+import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.concurrent.atomic.LongAdder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class CachedSizeConcurrentLinkedQueue<E> extends ConcurrentLinkedQueue<E> {
+ private final LongAdder cachedSize = new LongAdder();
+
+ @Override
+ public boolean add(@NotNull E e) {
+ boolean result = super.add(e);
+ if (result) {
+ cachedSize.increment();
+ }
+ return result;
+ }
+
+ @Nullable
+ @Override
+ public E poll() {
+ E result = super.poll();
+ if (result != null) {
+ cachedSize.decrement();
+ }
+ return result;
+ }
+
+ @Override
+ public int size() {
+ return cachedSize.intValue();
+ }
+}
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