From e11a84423db726d03c367e99582eb14ddc150d94 Mon Sep 17 00:00:00 2001
From: Kazuki Sakamoto <kaz@fb.com>
Date: Mon, 13 Feb 2017 09:00:27 -0800
Subject: [PATCH] Prevent GC delegates

---
 csharp/Facebook.Yoga/YogaLogger.cs |  3 ++-
 csharp/Facebook.Yoga/YogaNode.cs   | 17 +++++++++++++----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/csharp/Facebook.Yoga/YogaLogger.cs b/csharp/Facebook.Yoga/YogaLogger.cs
index bd3af941..b05ad381 100644
--- a/csharp/Facebook.Yoga/YogaLogger.cs
+++ b/csharp/Facebook.Yoga/YogaLogger.cs
@@ -23,6 +23,7 @@ namespace Facebook.Yoga
 
         private static bool _initialized;
 
+        public static Func _loggerInternal = LoggerInternal;
         public static Func Logger = null;
 
 #if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
@@ -45,7 +46,7 @@ namespace Facebook.Yoga
         {
             if (!_initialized)
             {
-                Native.YGInteropSetLogger(LoggerInternal);
+                Native.YGInteropSetLogger(_loggerInternal);
                 _initialized = true;
             }
         }
diff --git a/csharp/Facebook.Yoga/YogaNode.cs b/csharp/Facebook.Yoga/YogaNode.cs
index 23a86996..b748a35e 100644
--- a/csharp/Facebook.Yoga/YogaNode.cs
+++ b/csharp/Facebook.Yoga/YogaNode.cs
@@ -29,6 +29,13 @@ namespace Facebook.Yoga
         private MeasureFunction _measureFunction;
         private BaselineFunction _baselineFunction;
         private object _data;
+#if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
+        private static YogaMeasureFunc _measureInternalIOS = MeasureInternalIOS;
+        private static YogaBaselineFunc _baselineInternalIOS = BaselineInternalIOS;
+#else
+        private YogaMeasureFunc _measureInternal;
+        private YogaBaselineFunc _baselineInternal;
+#endif
 
         public YogaNode()
         {
@@ -555,9 +562,10 @@ namespace Facebook.Yoga
             {
 #if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
                 _ygNode.SetContext(this);
-                func = MeasureInternalIOS;
+                func = _measureInternalIOS;
 #else
-                func = MeasureInternal;
+                _measureInternal = MeasureInternal;
+                func = _measureInternal;
 #endif
             }
             Native.YGNodeSetMeasureFunc(_ygNode, func);
@@ -571,9 +579,10 @@ namespace Facebook.Yoga
             {
 #if (UNITY_IOS && !UNITY_EDITOR) || __IOS__
                 _ygNode.SetContext(this);
-                func = BaselineInternalIOS;
+                func = _baselineInternalIOS;
 #else
-                func = BaselineInternal;
+                _baselineInternal = BaselineInternal;
+                func = _baselineInternal;
 #endif
             }
             Native.YGNodeSetBaselineFunc(_ygNode, func);