Purpur/patches/server/0051-Add-tick-times-API.patch

From c38297ba3c2cb464c63bce271ae3ab538915645c Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Thu, 30 Jan 2020 00:41:24 -0600
Subject: [PATCH] Add tick times API

---
 .../net/minecraft/server/MinecraftServer.java | 37 +++++++++++++++++++
 .../org/bukkit/craftbukkit/CraftServer.java   | 12 ++++++
 2 files changed, 49 insertions(+)

diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index f2a8af48df..0889cef15d 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -106,6 +106,11 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
     private int G;
     private int H;
     public final long[] f = new long[100]; public long[] getTickTimes() { return f; } // Paper - OBFHELPER
+    // Purpur start
+    public final TickTimes tickTimes5s = new TickTimes(100);
+    public final TickTimes tickTimes10s = new TickTimes(200);
+    public final TickTimes tickTimes60s = new TickTimes(1200);
+    // Purpur end
     @Nullable
     private KeyPair I;
     @Nullable
@@ -1160,6 +1165,12 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
         this.methodProfiler.enter("tallying");
         long l = this.f[this.ticks % 100] = SystemUtils.getMonotonicNanos() - i;
 
+        // Purpur start
+        tickTimes5s.add(this.ticks % 100, l);
+        tickTimes10s.add(this.ticks % 200, l);
+        tickTimes60s.add(this.ticks % 1200, l);
+        // Purpur end
+
         this.av = this.av * 0.8F + (float) l / 1000000.0F * 0.19999999F;
         long i1 = SystemUtils.getMonotonicNanos();
 
@@ -2253,4 +2264,30 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
         return SERVER; // Paper
     }
     // CraftBukkit end
+
+    // Purpur start
+    public static class TickTimes {
+        private final long[] times;
+
+        public TickTimes(int length) {
+            times = new long[length];
+        }
+
+        void add(int index, long time) {
+            times[index] = time;
+        }
+
+        public long[] getTimes() {
+            return times.clone();
+        }
+
+        public double getAverage() {
+            long total = 0L;
+            for (long value : times) {
+                total += value;
+            }
+            return ((double) total / (double) times.length) * 1.0E-6D;
+        }
+    }
+    // Purpur end
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index d293bf27ac..32238d13b1 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -2233,4 +2233,16 @@ public final class CraftServer implements Server {
         return net.minecraft.server.MinecraftServer.currentTick;
     }
     // Paper end
+
+    // Purpur start
+    @Override
+    public long[] getTickTimes() {
+        return getServer().tickTimes5s.getTimes();
+    }
+
+    @Override
+    public double getAverageTickTime() {
+        return getServer().tickTimes5s.getAverage();
+    }
+    // Purpur end
 }
-- 
2.24.0