From 669bcb8675bb37e62a6bad995a65133fb7b1f56a Mon Sep 17 00:00:00 2001
From: Fabrizio Cucci <fabriziocucci@meta.com>
Date: Wed, 3 Apr 2024 02:43:36 -0700
Subject: [PATCH] Kotlinify YogaNodePool (#43786)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/43786

Changelog: [Internal]

As part of the Sustainability Week (see [post](https://fb.workplace.com/groups/251759413609061/permalink/742797531171911/)).

Reviewed By: alanleedev

Differential Revision: D55643838

fbshipit-source-id: 0138a9a9c328bea4838ab4f4c5a0db8a7436ebbe
---
 .../react/uimanager/YogaNodePool.java         | 33 -------------------
 .../facebook/react/uimanager/YogaNodePool.kt  | 20 +++++++++++
 2 files changed, 20 insertions(+), 33 deletions(-)
 delete mode 100644 packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.java
 create mode 100644 packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.kt

diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.java
deleted file mode 100644
index 1af237ec325..00000000000
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.java
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-package com.facebook.react.uimanager;
-
-import com.facebook.infer.annotation.Nullsafe;
-import com.facebook.react.common.ClearableSynchronizedPool;
-import com.facebook.yoga.YogaNode;
-
-/** Static holder for a recycling pool of YogaNodes. */
-@Nullsafe(Nullsafe.Mode.LOCAL)
-class YogaNodePool {
-
-  private static final Object sInitLock = new Object();
-  private static ClearableSynchronizedPool<YogaNode> sPool;
-
-  public static ClearableSynchronizedPool<YogaNode> get() {
-    if (sPool != null) {
-      return sPool;
-    }
-
-    synchronized (sInitLock) {
-      if (sPool == null) {
-        sPool = new ClearableSynchronizedPool<>(1024);
-      }
-      return sPool;
-    }
-  }
-}
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.kt b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.kt
new file mode 100644
index 00000000000..d76399e8f83
--- /dev/null
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/YogaNodePool.kt
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.uimanager
+
+import com.facebook.react.common.ClearableSynchronizedPool
+import com.facebook.yoga.YogaNode
+
+/** Static holder for a recycling pool of YogaNodes. */
+internal object YogaNodePool {
+
+  private val pool: ClearableSynchronizedPool<YogaNode> by
+      lazy(LazyThreadSafetyMode.SYNCHRONIZED) { ClearableSynchronizedPool(1024) }
+
+  @JvmStatic fun get(): ClearableSynchronizedPool<YogaNode> = pool
+}