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