delete state alignment mechanism (#46658)

Summary:
Pull Request resolved: #46658

We are shipping a better solution: Runtime Shadow Node Reference Syncing which is being rolled out.

Differential Revision: D63456344

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlags.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<bce0548a9e58299746c75aad95a25275>>
+ * @generated SignedSource<<32afa527b04c5ede00ecbac498d229e9>>
  */
 
 /**
@@ -334,12 +334,6 @@ public object ReactNativeFeatureFlags {
   @JvmStatic
   public fun useRuntimeShadowNodeReferenceUpdateOnLayout(): Boolean = accessor.useRuntimeShadowNodeReferenceUpdateOnLayout()
 
-  /**
-   * When enabled, it uses optimised state reconciliation algorithm.
-   */
-  @JvmStatic
-  public fun useStateAlignmentMechanism(): Boolean = accessor.useStateAlignmentMechanism()
-
   /**
    * In Bridgeless mode, should legacy NativeModules use the TurboModule system?
    */

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxAccessor.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<19dca512d93d689e927ee5988a43e646>>
+ * @generated SignedSource<<8b904803bc7fea167a54395830a0a9dd>>
  */
 
 /**
@@ -71,7 +71,6 @@ public class ReactNativeFeatureFlagsCxxAccessor : ReactNativeFeatureFlagsAccesso
   private var useOptimizedEventBatchingOnAndroidCache: Boolean? = null
   private var useRuntimeShadowNodeReferenceUpdateCache: Boolean? = null
   private var useRuntimeShadowNodeReferenceUpdateOnLayoutCache: Boolean? = null
-  private var useStateAlignmentMechanismCache: Boolean? = null
   private var useTurboModuleInteropCache: Boolean? = null
   private var useTurboModulesCache: Boolean? = null
 
@@ -534,15 +533,6 @@ public class ReactNativeFeatureFlagsCxxAccessor : ReactNativeFeatureFlagsAccesso
     return cached
   }
 
-  override fun useStateAlignmentMechanism(): Boolean {
-    var cached = useStateAlignmentMechanismCache
-    if (cached == null) {
-      cached = ReactNativeFeatureFlagsCxxInterop.useStateAlignmentMechanism()
-      useStateAlignmentMechanismCache = cached
-    }
-    return cached
-  }
-
   override fun useTurboModuleInterop(): Boolean {
     var cached = useTurboModuleInteropCache
     if (cached == null) {

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsCxxInterop.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<76eebf045692e945d39a4ea27a63ae02>>
+ * @generated SignedSource<<03027b2e7b5861322553d638ff9890f8>>
  */
 
 /**
@@ -130,8 +130,6 @@ public object ReactNativeFeatureFlagsCxxInterop {
 
   @DoNotStrip @JvmStatic public external fun useRuntimeShadowNodeReferenceUpdateOnLayout(): Boolean
 
-  @DoNotStrip @JvmStatic public external fun useStateAlignmentMechanism(): Boolean
-
   @DoNotStrip @JvmStatic public external fun useTurboModuleInterop(): Boolean
 
   @DoNotStrip @JvmStatic public external fun useTurboModules(): Boolean

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsDefaults.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<8155a9c1309145fefdb19feb33c241db>>
+ * @generated SignedSource<<8744b271838b0d6c5e6234880bdfd360>>
  */
 
 /**
@@ -125,8 +125,6 @@ public open class ReactNativeFeatureFlagsDefaults : ReactNativeFeatureFlagsProvi
 
   override fun useRuntimeShadowNodeReferenceUpdateOnLayout(): Boolean = false
 
-  override fun useStateAlignmentMechanism(): Boolean = false
-
   override fun useTurboModuleInterop(): Boolean = false
 
   override fun useTurboModules(): Boolean = false

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsLocalAccessor.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<5e4e474b62996caec15bbf8af9622a0a>>
+ * @generated SignedSource<<f834dd3f01623acbb34f9f359c383f5d>>
  */
 
 /**
@@ -75,7 +75,6 @@ public class ReactNativeFeatureFlagsLocalAccessor : ReactNativeFeatureFlagsAcces
   private var useOptimizedEventBatchingOnAndroidCache: Boolean? = null
   private var useRuntimeShadowNodeReferenceUpdateCache: Boolean? = null
   private var useRuntimeShadowNodeReferenceUpdateOnLayoutCache: Boolean? = null
-  private var useStateAlignmentMechanismCache: Boolean? = null
   private var useTurboModuleInteropCache: Boolean? = null
   private var useTurboModulesCache: Boolean? = null
 
@@ -589,16 +588,6 @@ public class ReactNativeFeatureFlagsLocalAccessor : ReactNativeFeatureFlagsAcces
     return cached
   }
 
-  override fun useStateAlignmentMechanism(): Boolean {
-    var cached = useStateAlignmentMechanismCache
-    if (cached == null) {
-      cached = currentProvider.useStateAlignmentMechanism()
-      accessedFeatureFlags.add("useStateAlignmentMechanism")
-      useStateAlignmentMechanismCache = cached
-    }
-    return cached
-  }
-
   override fun useTurboModuleInterop(): Boolean {
     var cached = useTurboModuleInteropCache
     if (cached == null) {

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/internal/featureflags/ReactNativeFeatureFlagsProvider.kt

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<97eddbbd75ff7cfd0f1c905d72e9eafd>>
+ * @generated SignedSource<<12ca99bd2947eda279018830e2f5f795>>
  */
 
 /**
@@ -125,8 +125,6 @@ public interface ReactNativeFeatureFlagsProvider {
 
   @DoNotStrip public fun useRuntimeShadowNodeReferenceUpdateOnLayout(): Boolean
 
-  @DoNotStrip public fun useStateAlignmentMechanism(): Boolean
-
   @DoNotStrip public fun useTurboModuleInterop(): Boolean
 
   @DoNotStrip public fun useTurboModules(): Boolean

packages/react-native/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<383e9749c506bc2326455ef907e06a4c>>
+ * @generated SignedSource<<5b012254d44fdf27d76dd656a2e37a48>>
  */
 
 /**
@@ -345,12 +345,6 @@ class ReactNativeFeatureFlagsProviderHolder
     return method(javaProvider_);
   }
 
-  bool useStateAlignmentMechanism() override {
-    static const auto method =
-        getReactNativeFeatureFlagsProviderJavaClass()->getMethod<jboolean()>("useStateAlignmentMechanism");
-    return method(javaProvider_);
-  }
-
   bool useTurboModuleInterop() override {
     static const auto method =
         getReactNativeFeatureFlagsProviderJavaClass()->getMethod<jboolean()>("useTurboModuleInterop");
@@ -622,11 +616,6 @@ bool JReactNativeFeatureFlagsCxxInterop::useRuntimeShadowNodeReferenceUpdateOnLa
   return ReactNativeFeatureFlags::useRuntimeShadowNodeReferenceUpdateOnLayout();
 }
 
-bool JReactNativeFeatureFlagsCxxInterop::useStateAlignmentMechanism(
-    facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop> /*unused*/) {
-  return ReactNativeFeatureFlags::useStateAlignmentMechanism();
-}
-
 bool JReactNativeFeatureFlagsCxxInterop::useTurboModuleInterop(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop> /*unused*/) {
   return ReactNativeFeatureFlags::useTurboModuleInterop();
@@ -807,9 +796,6 @@ void JReactNativeFeatureFlagsCxxInterop::registerNatives() {
       makeNativeMethod(
         "useRuntimeShadowNodeReferenceUpdateOnLayout",
         JReactNativeFeatureFlagsCxxInterop::useRuntimeShadowNodeReferenceUpdateOnLayout),
-      makeNativeMethod(
-        "useStateAlignmentMechanism",
-        JReactNativeFeatureFlagsCxxInterop::useStateAlignmentMechanism),
       makeNativeMethod(
         "useTurboModuleInterop",
         JReactNativeFeatureFlagsCxxInterop::useTurboModuleInterop),

packages/react-native/ReactAndroid/src/main/jni/react/featureflags/JReactNativeFeatureFlagsCxxInterop.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<293ed423f770e7e0ba95b19eb5c28dc2>>
+ * @generated SignedSource<<7828e8c5267a3ffce342a150c05e3d81>>
  */
 
 /**
@@ -183,9 +183,6 @@ class JReactNativeFeatureFlagsCxxInterop
   static bool useRuntimeShadowNodeReferenceUpdateOnLayout(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
 
-  static bool useStateAlignmentMechanism(
-    facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
-
   static bool useTurboModuleInterop(
     facebook::jni::alias_ref<JReactNativeFeatureFlagsCxxInterop>);
 

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlags.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<85cdb5a41317e9671cc23b2c7345c04d>>
+ * @generated SignedSource<<e033ef0aefc622c1603799031a1c06ae>>
  */
 
 /**
@@ -225,10 +225,6 @@ bool ReactNativeFeatureFlags::useRuntimeShadowNodeReferenceUpdateOnLayout() {
   return getAccessor().useRuntimeShadowNodeReferenceUpdateOnLayout();
 }
 
-bool ReactNativeFeatureFlags::useStateAlignmentMechanism() {
-  return getAccessor().useStateAlignmentMechanism();
-}
-
 bool ReactNativeFeatureFlags::useTurboModuleInterop() {
   return getAccessor().useTurboModuleInterop();
 }

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlags.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<ea2c2d19e83630b549e719057cd1982e>>
+ * @generated SignedSource<<59bef17cdec5857e9327e8f04f7e0204>>
  */
 
 /**
@@ -292,11 +292,6 @@ class ReactNativeFeatureFlags {
    */
   RN_EXPORT static bool useRuntimeShadowNodeReferenceUpdateOnLayout();
 
-  /**
-   * When enabled, it uses optimised state reconciliation algorithm.
-   */
-  RN_EXPORT static bool useStateAlignmentMechanism();
-
   /**
    * In Bridgeless mode, should legacy NativeModules use the TurboModule system?
    */

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsAccessor.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<daeeaa9fbbc3f9eb9d1b4164f6e8c954>>
+ * @generated SignedSource<<71d845d565e2a8783f7583213e6010de>>
  */
 
 /**
@@ -947,24 +947,6 @@ bool ReactNativeFeatureFlagsAccessor::useRuntimeShadowNodeReferenceUpdateOnLayou
   return flagValue.value();
 }
 
-bool ReactNativeFeatureFlagsAccessor::useStateAlignmentMechanism() {
-  auto flagValue = useStateAlignmentMechanism_.load();
-
-  if (!flagValue.has_value()) {
-    // This block is not exclusive but it is not necessary.
-    // If multiple threads try to initialize the feature flag, we would only
-    // be accessing the provider multiple times but the end state of this
-    // instance and the returned flag value would be the same.
-
-    markFlagAsAccessed(51, "useStateAlignmentMechanism");
-
-    flagValue = currentProvider_->useStateAlignmentMechanism();
-    useStateAlignmentMechanism_ = flagValue;
-  }
-
-  return flagValue.value();
-}
-
 bool ReactNativeFeatureFlagsAccessor::useTurboModuleInterop() {
   auto flagValue = useTurboModuleInterop_.load();
 
@@ -974,7 +956,7 @@ bool ReactNativeFeatureFlagsAccessor::useTurboModuleInterop() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(52, "useTurboModuleInterop");
+    markFlagAsAccessed(51, "useTurboModuleInterop");
 
     flagValue = currentProvider_->useTurboModuleInterop();
     useTurboModuleInterop_ = flagValue;
@@ -992,7 +974,7 @@ bool ReactNativeFeatureFlagsAccessor::useTurboModules() {
     // be accessing the provider multiple times but the end state of this
     // instance and the returned flag value would be the same.
 
-    markFlagAsAccessed(53, "useTurboModules");
+    markFlagAsAccessed(52, "useTurboModules");
 
     flagValue = currentProvider_->useTurboModules();
     useTurboModules_ = flagValue;

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsAccessor.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<5f2c9b500fc26e68d56efae08b15575f>>
+ * @generated SignedSource<<2b2db46f819ffb208fba052aee5f2fc6>>
  */
 
 /**
@@ -82,7 +82,6 @@ class ReactNativeFeatureFlagsAccessor {
   bool useOptimizedEventBatchingOnAndroid();
   bool useRuntimeShadowNodeReferenceUpdate();
   bool useRuntimeShadowNodeReferenceUpdateOnLayout();
-  bool useStateAlignmentMechanism();
   bool useTurboModuleInterop();
   bool useTurboModules();
 
@@ -95,7 +94,7 @@ class ReactNativeFeatureFlagsAccessor {
   std::unique_ptr<ReactNativeFeatureFlagsProvider> currentProvider_;
   bool wasOverridden_;
 
-  std::array<std::atomic<const char*>, 54> accessedFeatureFlags_;
+  std::array<std::atomic<const char*>, 53> accessedFeatureFlags_;
 
   std::atomic<std::optional<bool>> commonTestFlag_;
   std::atomic<std::optional<bool>> allowRecursiveCommitsWithSynchronousMountOnAndroid_;
@@ -148,7 +147,6 @@ class ReactNativeFeatureFlagsAccessor {
   std::atomic<std::optional<bool>> useOptimizedEventBatchingOnAndroid_;
   std::atomic<std::optional<bool>> useRuntimeShadowNodeReferenceUpdate_;
   std::atomic<std::optional<bool>> useRuntimeShadowNodeReferenceUpdateOnLayout_;
-  std::atomic<std::optional<bool>> useStateAlignmentMechanism_;
   std::atomic<std::optional<bool>> useTurboModuleInterop_;
   std::atomic<std::optional<bool>> useTurboModules_;
 };

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsDefaults.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<fb3d7a930222a40e9a8c377989713b07>>
+ * @generated SignedSource<<0520639ff05f8bc2199de7be3b26e6e0>>
  */
 
 /**
@@ -231,10 +231,6 @@ class ReactNativeFeatureFlagsDefaults : public ReactNativeFeatureFlagsProvider {
     return false;
   }
 
-  bool useStateAlignmentMechanism() override {
-    return false;
-  }
-
   bool useTurboModuleInterop() override {
     return false;
   }

packages/react-native/ReactCommon/react/featureflags/ReactNativeFeatureFlagsProvider.h

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<aaa516b2c719cb871f08c65bd7ce072f>>
+ * @generated SignedSource<<83348430670eef22eb555b4048805fbb>>
  */
 
 /**
@@ -76,7 +76,6 @@ class ReactNativeFeatureFlagsProvider {
   virtual bool useOptimizedEventBatchingOnAndroid() = 0;
   virtual bool useRuntimeShadowNodeReferenceUpdate() = 0;
   virtual bool useRuntimeShadowNodeReferenceUpdateOnLayout() = 0;
-  virtual bool useStateAlignmentMechanism() = 0;
   virtual bool useTurboModuleInterop() = 0;
   virtual bool useTurboModules() = 0;
 };

packages/react-native/ReactCommon/react/nativemodule/featureflags/NativeReactNativeFeatureFlags.cpp

@@ -4,7 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  *
- * @generated SignedSource<<2b484558d552981e4ec0644d75849dde>>
+ * @generated SignedSource<<530400259d51b9eeccdd0bcb78e5f8e1>>
  */
 
 /**
@@ -292,11 +292,6 @@ bool NativeReactNativeFeatureFlags::useRuntimeShadowNodeReferenceUpdateOnLayout(
   return ReactNativeFeatureFlags::useRuntimeShadowNodeReferenceUpdateOnLayout();
 }
 
-bool NativeReactNativeFeatureFlags::useStateAlignmentMechanism(
-    jsi::Runtime& /*runtime*/) {
-  return ReactNativeFeatureFlags::useStateAlignmentMechanism();
-}
-
 bool NativeReactNativeFeatureFlags::useTurboModuleInterop(
     jsi::Runtime& /*runtime*/) {
   return ReactNativeFeatureFlags::useTurboModuleInterop();