From 7d32a5500fd79455112616c6a1646fb71b1dac43 Mon Sep 17 00:00:00 2001 From: Spottedleaf Date: Mon, 6 Apr 2020 18:10:43 -0700 Subject: [PATCH] Remove streams from PairedQueue We shouldn't be doing stream calls just to see if the queue is empty. This creates loads of garbage thanks to how often it's called. diff --git a/src/main/java/net/minecraft/server/PairedQueue.java b/src/main/java/net/minecraft/server/PairedQueue.java index 85bb22e4b..2369afb4f 100644 --- a/src/main/java/net/minecraft/server/PairedQueue.java +++ b/src/main/java/net/minecraft/server/PairedQueue.java @@ -20,32 +20,30 @@ public interface PairedQueue { public static final class a implements PairedQueue { - private final List> a; + private final List> a; private final List> getQueues() { return this.a; } // Paper - OBFHELPER public a(int i) { - this.a = (List) IntStream.range(0, i).mapToObj((j) -> { - return Queues.newConcurrentLinkedQueue(); - }).collect(Collectors.toList()); + // Paper start - remove streams + this.a = new java.util.ArrayList<>(i); // queues + for (int j = 0; j < i; ++j) { + this.getQueues().add(Queues.newConcurrentLinkedQueue()); + } + // Paper end - remove streams } @Nullable @Override public Runnable a() { - Iterator iterator = this.a.iterator(); - - Runnable runnable; - - do { - if (!iterator.hasNext()) { - return null; + // Paper start - remove iterator creation + for (int i = 0, len = this.getQueues().size(); i < len; ++i) { + Queue queue = this.getQueues().get(i); + Runnable ret = queue.poll(); + if (ret != null) { + return ret; } - - Queue queue = (Queue) iterator.next(); - - runnable = (Runnable) queue.poll(); - } while (runnable == null); - - return runnable; + } + return null; + // Paper end - remove iterator creation } public boolean a(PairedQueue.b pairedqueue_b) { @@ -57,7 +55,16 @@ public interface PairedQueue { @Override public boolean b() { - return this.a.stream().allMatch(Collection::isEmpty); + // Paper start - remove streams + // why are we doing streams every time we might want to execute a task? + for (int i = 0, len = this.getQueues().size(); i < len; ++i) { + Queue queue = this.getQueues().get(i); + if (!queue.isEmpty()) { + return false; + } + } + return true; + // Paper end - remove streams } } -- 2.25.1