Added struct RcScopedTimer to avoid allocations

CHANGELOG.md

@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Added
 - Added RcCircularBuffer<T> [@ikpil](https://github.com/ikpil)
 - Added struct DtCrowdScopedTimer to avoid allocations in scoped timer calls. [@wrenge](https://github.com/wrenge)
+- Added struct RcScopedTimer to avoid allocations in RcContext scoped timer [@ikpil](https://github.com/ikpil)
  
 ### Fixed
 

src/DotRecast.Core/RcAnonymousDisposable.cs

@@ -1,20 +0,0 @@
-using System;
-
-namespace DotRecast.Core
-{
-    public struct RcAnonymousDisposable : IDisposable
-    {
-        private Action _dispose;
-
-        public RcAnonymousDisposable(Action dispose)
-        {
-            _dispose = dispose;
-        }
-
-        public void Dispose()
-        {
-            _dispose?.Invoke();
-            _dispose = null;
-        }
-    }
-}

src/DotRecast.Core/RcContext.cs

@@ -49,10 +49,9 @@ namespace DotRecast.Core
             _timerAccum = new ConcurrentDictionary<string, RcAtomicLong>();
         }
 
-        public IDisposable ScopedTimer(RcTimerLabel label)
+        public RcScopedTimer ScopedTimer(RcTimerLabel label)
         {
-            StartTimer(label);
-            return new RcAnonymousDisposable(() => StopTimer(label));
+            return new RcScopedTimer(this, label);
         }
 
         public void StartTimer(RcTimerLabel label)

src/DotRecast.Core/RcScopedTimer.cs

@@ -0,0 +1,23 @@
+using System;
+
+namespace DotRecast.Core
+{
+    public readonly struct RcScopedTimer : IDisposable
+    {
+        private readonly RcContext _context;
+        private readonly RcTimerLabel _label;
+
+        internal RcScopedTimer(RcContext context, RcTimerLabel label)
+        {
+            _context = context;
+            _label = label;
+            
+            _context.StartTimer(_label);
+        }
+
+        public void Dispose()
+        {
+            _context.StopTimer(_label);
+        }
+    }
+}