From ac5c3dec878dca1127cef2c71741e8690ff5de1d Mon Sep 17 00:00:00 2001
From: Polina Cherkasova <polinach@google.com>
Date: Tue, 6 Feb 2024 19:26:40 -0800
Subject: [PATCH] Instrument CurvedAnimation. (#143007)

---
 .../flutter/lib/src/animation/animations.dart     | 14 ++++++++++++++
 .../flutter/test/animation/animations_test.dart   | 15 +++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/packages/flutter/lib/src/animation/animations.dart b/packages/flutter/lib/src/animation/animations.dart
index 3ccddd2b1e..93e0124874 100644
--- a/packages/flutter/lib/src/animation/animations.dart
+++ b/packages/flutter/lib/src/animation/animations.dart
@@ -379,6 +379,15 @@ class CurvedAnimation extends Animation<double> with AnimationWithParentMixin<do
     required this.curve,
     this.reverseCurve,
   }) {
+    // TODO(polina-c): stop duplicating code across disposables
+    // https://github.com/flutter/flutter/issues/137435
+    if (kFlutterMemoryAllocationsEnabled) {
+      FlutterMemoryAllocations.instance.dispatchObjectCreated(
+        library: 'package:flutter/animation.dart',
+        className: '$CurvedAnimation',
+        object: this,
+      );
+    }
     _updateCurveDirection(parent.status);
     parent.addStatusListener(_updateCurveDirection);
   }
@@ -433,6 +442,11 @@ class CurvedAnimation extends Animation<double> with AnimationWithParentMixin<do
 
   /// Cleans up any listeners added by this CurvedAnimation.
   void dispose() {
+    // TODO(polina-c): stop duplicating code across disposables
+    // https://github.com/flutter/flutter/issues/137435
+    if (kFlutterMemoryAllocationsEnabled) {
+      FlutterMemoryAllocations.instance.dispatchObjectDisposed(object: this);
+    }
     isDisposed = true;
     parent.removeStatusListener(_updateCurveDirection);
   }
diff --git a/packages/flutter/test/animation/animations_test.dart b/packages/flutter/test/animation/animations_test.dart
index d88af7da06..37ce88912b 100644
--- a/packages/flutter/test/animation/animations_test.dart
+++ b/packages/flutter/test/animation/animations_test.dart
@@ -512,4 +512,19 @@ FlutterError
     expect(animation.value, 10.0);
   });
 
+  test('$CurvedAnimation dispatches memory events', () async {
+    await expectLater(
+      await memoryEvents(
+        () => CurvedAnimation(
+          parent: AnimationController(
+            duration: const Duration(milliseconds: 100),
+            vsync: const TestVSync(),
+          ),
+          curve: Curves.linear,
+        ).dispose(),
+        CurvedAnimation,
+      ),
+      areCreateAndDispose,
+    );
+  });
 }