init

Runtime/EventPool.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+
+namespace ShrinkEventBus
+{
+    public static class EventPool<T> where T : EventBase, new()
+    {
+        private static readonly Stack<T> Pool = new(32);
+        private static readonly object Lock = new();
+
+        public static T Get()
+        {
+            lock (Lock)
+            {
+                if (Pool.Count > 0)
+                {
+                    var evt = Pool.Pop();
+                    evt.IsInPool = false;
+                    return evt;
+                }
+            }
+
+            var newEvt = new T();
+            newEvt.ReleaseAction = e => Release((T)e);
+            return newEvt;
+        }
+
+        public static void Release(T evt)
+        {
+            if (evt == null || evt.IsInPool) return;
+
+            evt.ResetInternal();
+            evt.IsInPool = true;
+
+            lock (Lock)
+            {
+                Pool.Push(evt);
+            }
+        }
+    }
+}