[camera_android][0.10.10+2] Pausing the debugger (reaching a breakpoint) after startImageStream() causes memory leak, then OOM crash #166533

kwikwag · 2025-04-03T14:40:41Z

Steps to reproduce

If the debugger is paused any time after startImageStream() is called, or if the main thread hangs for long enough for some other reason, there appears to be some kind of buffer that's filling up causing an out-of-memory error to ensue and the app crashes.

My use-case: I need to run the images from the camera through a machine-learning model (TFLite/LiteRT). For this purpose I use the startImageStream() listener.

I cannot use the endorsed CameraX implementation of camera 0.11.1 (camera_android_camerax) due to a show-stopping bug (#152763) that crashes the app spontaneously with a NullPointerException when using startImageStream().

This is distinct from #97941, which affected iOS.

Expected results

Using startImageStream() should not crash the app, neither spontaneously nor when the debugger is paused or the main thread otherwise busy.

Actual results

In camera 0.10.6, or camera 0.11.1 with camera_android 0.10.10+2, when pausing the debugger at some point where the image stream is being listened to (startImageStream() was called), the app accumulates memory and eventually crashes due to a platform OOM (out-of-memory) error. Equivalently, the crash will occur if the main thread hangs for long enough.

Code sample

pubspec.yaml

name: issue_camera_stream
description: "Demonstration of issue in Flutter Camera plugin of memory leak when the main thread is halted after using startImageStream()."
publish_to: 'none'

version: 1.0.0+1

environment:
  sdk: ^3.7.2

dependencies:
  flutter:
    sdk: flutter
  cupertino_icons: ^1.0.8

  camera: ^0.11.1
  # Using the endorsed Android implementation camera_android_camerax causes issue #152763
  camera_android: ^0.10.10+2

  # Version 0.10.6 has the same problem
  # camera: ^0.10.6

dev_dependencies:
  flutter_test:
    sdk: flutter

  flutter_lints: ^5.0.0

flutter:
  uses-material-design: true

main.dart

import 'dart:io';

import 'package:camera/camera.dart';
import 'package:flutter/material.dart';


class CameraManager {
  bool _isReady = false;
  CameraController? _cameraController;
  final _listeners = List<onLatestImageAvailable>.empty(growable: true); 

  bool get isReady => _isReady;

  CameraController get controller {
    final cameraController = _cameraController;
    if (!_isReady || cameraController == null) {
      throw Exception("Invalid camera manager state");
    }
    return cameraController;
  }

  void addListener(onLatestImageAvailable callback) {
    _listeners.add(callback);
  }
  
  bool removeListener(onLatestImageAvailable callback) {
    return _listeners.remove(callback);
  }

  onLatestImageAvailableHandler(CameraImage image) {
    final listeners = [..._listeners];
    for (var listener in listeners) {
      try {
        listener(image);
      }
      catch (e) {
        // ignore callback exceptions
      }
    }
  }

  CameraManager() {
    // Ensure that plugin services are initialized so that `availableCameras()`
    // can be called before `runApp()`
    WidgetsFlutterBinding.ensureInitialized();
    // Obtain a list of the available cameras on the device.
    availableCameras().then((cameras) async {
      final backCameraDescription = cameras.firstWhere((camera) => camera.lensDirection == CameraLensDirection.back);
      final cameraController = CameraController(backCameraDescription, ResolutionPreset.high);
      await cameraController.initialize();
      cameraController.startImageStream(onLatestImageAvailableHandler);
      _cameraController = cameraController;
      _isReady = true;
    });
  }

  dispose() {
    _isReady = false;
    final cameraController = _cameraController;
    if (cameraController == null) {
      return;
    }
    _cameraController = null;
    cameraController.dispose();
  }
}

late CameraManager _cameraManager;

void main() {
  _cameraManager = CameraManager();

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      // title: 'Flutter Camera startImageStream Issue',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
      ),
      home: const HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  // const HomePage({super.key, required this.title});
  const HomePage({super.key});

  // final String title;

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  int _counter = 0;

  void _onLatestImageAvailableHandler(CameraImage image) {
    setState(() {
      _counter++;
      if (_counter % 100 == 0) {
        sleep(Duration(seconds: 30));
      }
    });
  }

  @override
  void initState() {
    super.initState();
    _cameraManager.addListener(_onLatestImageAvailableHandler);
  }

  @override
  void dispose() {
    super.dispose();
    _cameraManager.removeListener(_onLatestImageAvailableHandler);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      // appBar: AppBar(
      //   backgroundColor: Theme.of(context).colorScheme.inversePrimary,
      //   title: Text(widget.title),
      // ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            _counter > 0? CameraPreview(_cameraManager.controller) :
              const Text('The camera is starting...'),
            if (_counter != 0) Text(
              ((_counter + 1) % 100 == 0) ? 'Sleeping for 30s...' : '$_counter frames',
              style: Theme.of(context).textTheme.headlineSmall,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () { setState(() {
          _counter = 0;
        }); },
        tooltip: 'Reset count',
        child: const Icon(Icons.restart_alt),
      ),
    );
  }
}

Screenshots or Video

Screenshots / Video demonstration

(The demo uses a slightly different version of the code, which doesn't halt every 100 frames, but instead I entered a debug breakpoint manually)

App with camera plugin 0.10.6 crashes within seconds of reaching the breakpoint. The same thing happens with camera 0.11.1 together with camera_android 0.10.10+2.

issue_flutter_camera-0.10.6-android_memory_leak.webm

Same app with camera plugin version 0.11.1 has no memory leak when reaching breakpoint, but crashes spontaneously after about one minute.

issue_flutter_camera-0.11.1-spontaneous_crash.webm

Logs

I/Camera  (16396): startPreview
I/ViewRootImpl@514ccc8[MainActivity](16396): handleWindowFocusChanged: 1 0 call from android.view.ViewRootImpl.-$$Nest$mhandleWindowFocusChanged:0
D/ViewRootImpl@514ccc8[MainActivity](16396): mThreadedRenderer.initializeIfNeeded()#2 mSurface={isValid=true 0xb400007a0f34fd50}
D/InputMethodManagerUtils(16396): startInputInner - Id : 0
I/InputMethodManager(16396): startInputInner - IInputMethodManagerGlobalInvoker.startInputOrWindowGainedFocus
I/ViewRootImpl@514ccc8[MainActivity](16396): onDisplayChanged oldDisplayState=2 newDisplayState=2
I/CameraManagerGlobal(16396): Camera 0 facing CAMERA_FACING_BACK state now CAMERA_STATE_OPEN for client com.example.issue_camera_stream API Level 2 User Id 0
D/InputMethodManagerUtils(16396): startInputInner - Id : 0
I/InsetsController(16396): onStateChanged: host=com.example.issue_camera_stream/com.example.issue_camera_stream.MainActivity, from=android.view.ViewRootImpl$ViewRootHandler.handleMessageImpl:7209, state=InsetsState: {mDisplayFrame=Rect(0, 0 - 1080, 2340), mDisplayCutout=DisplayCutout{insets=Rect(0, 80 - 0, 0) waterfall=Insets{left=0, top=0, right=0, bottom=0} boundingRect={Bounds=[Rect(0, 0 - 0, 0), Rect(511, 0 - 569, 80), Rect(0, 0 - 0, 0), Rect(0, 0 - 0, 0)]} cutoutPathParserInfo={CutoutPathParserInfo{displayWidth=1080 displayHeight=2340 physicalDisplayWidth=1080 physicalDisplayHeight=2340 density={2.8125} cutoutSpec={M 0,0 M 0,7.822222222222222‬‬ a 10.31111111111111‬,10.31111111111111‬ 0 1,0 0,20.62222222222222‬ a 10.31111111111111‬,10.31111111111111‬ 0 1,0 0,-20.62222222222222‬ Z @dp} rotation={0} scale={1.0} physicalPixelDisplaySizeRatio={1.0}}}}, mRoundedCorners=RoundedCorners{[RoundedCorner{position=TopLeft, radius=0, center=Point(0, 0)}, RoundedCorner{position=TopRight, radius=0, center=Point(0, 0)}, RoundedCorner{position=BottomRight, radius=0, center=Point(0, 0)}, RoundedCorner{position=BottomLeft, radius=0, center=Point(0, 0)}]}  mRoundedCornerFrame=Rect(0, 0 - 1080, 2340), mPrivacyIndicatorBounds=PrivacyIndicatorBounds {static bounds=Rect(956, 0 - 1080, 80) rotation=0}, mDisplayShape=DisplayShape{ spec=-311912193 displayWidth=1080 displayHeight=2340 physicalPixelDisplaySizeRatio=1.0 rotation=0 offsetX=0 offsetY=0 scale=1.0}, mSources= { InsetsSource: {d5340000 mType=statusBars mFrame=[0,0][1080,80] mVisible=true mFlags=[]}, InsetsSource: {d5340005 mType=mandatorySystemGestures mFrame=[0,0][1080,114] mVisible=true mFlags=[]}, InsetsSource: {d5340006 mType=tappableElement mFrame=[0,0][1080,80] mVisible=true mFlags=[]}, InsetsSource: {3 mType=ime mFrame=[0,0][0,0] mVisible=false mFlags=[]}, InsetsSource: {27 mType=displayCutout mFrame=[0,0][1080,80] mVisible=true mFlags=[]}, InsetsSource: {ea60001 mType=navigationBars mFrame=[0,2205][1080,2340] mVisible=true mFlags=[]}, InsetsSource: {ea60004 mType=systemGestures mFrame=[0,0][0,0] mVisible=true mFlags=[]}, InsetsSource: {ea60005 mType=mandatorySystemGestures mFrame=[0,2205][1080,2340] mVisible=true mFlags=[]}, InsetsSource: {ea60006 mType=tappableElement mFrame=[0,2205][1080,2340] mVisible=true mFlags=[]}, InsetsSource: {ea60024 mType=systemGestures mFrame=[0,0][0,0] mVisible=true mFlags=[]} }
I/InsetsSourceConsumer(16396): applyRequestedVisibilityToControl: visible=false, type=ime, host=com.example.issue_camera_stream/com.example.issue_camera_stream.MainActivity
I/Camera  (16396): CameraCaptureSession onConfigured
I/Camera  (16396): Updating builder settings
D/Camera  (16396): Updating builder with feature: ExposureLockFeature
D/Camera  (16396): Updating builder with feature: ExposurePointFeature
D/Camera  (16396): Updating builder with feature: ZoomLevelFeature
D/Camera  (16396): Updating builder with feature: AutoFocusFeature
D/Camera  (16396): Updating builder with feature: NoiseReductionFeature
I/Camera  (16396): updateNoiseReduction | currentSetting: fast
D/Camera  (16396): Updating builder with feature: FocusPointFeature
D/Camera  (16396): Updating builder with feature: ResolutionFeature
D/Camera  (16396): Updating builder with feature: SensorOrientationFeature
D/Camera  (16396): Updating builder with feature: FlashFeature
D/Camera  (16396): Updating builder with feature: ExposureOffsetFeature
D/Camera  (16396): Updating builder with feature: FpsRangeFeature
I/Camera  (16396): refreshPreviewCaptureSession
I/CameraManagerGlobal(16396): Camera 0 facing CAMERA_FACING_BACK state now CAMERA_STATE_ACTIVE for client com.example.issue_camera_stream API Level 2 User Id 0
I/CameraManagerGlobal(16396): Camera 0 facing CAMERA_FACING_BACK state now CAMERA_STATE_IDLE for client com.example.issue_camera_stream API Level 2 User Id 0
I/Camera  (16396): startPreviewWithImageStream
W/e_camera_stream(16396): Long monitor contention with owner main (16396) at void android.hardware.camera2.impl.CameraDeviceImpl.waitUntilIdle()(CameraDeviceImpl.java:1420) waiters=0 in void android.hardware.camera2.impl.CameraDeviceImpl$4.run() for 1.048s
I/Camera  (16396): CameraCaptureSession onConfigured
I/Camera  (16396): Updating builder settings
D/Camera  (16396): Updating builder with feature: ExposureLockFeature
D/Camera  (16396): Updating builder with feature: ExposurePointFeature
D/Camera  (16396): Updating builder with feature: ZoomLevelFeature
D/Camera  (16396): Updating builder with feature: AutoFocusFeature
D/Camera  (16396): Updating builder with feature: NoiseReductionFeature
I/Camera  (16396): updateNoiseReduction | currentSetting: fast
D/Camera  (16396): Updating builder with feature: FocusPointFeature
D/Camera  (16396): Updating builder with feature: ResolutionFeature
D/Camera  (16396): Updating builder with feature: SensorOrientationFeature
D/Camera  (16396): Updating builder with feature: FlashFeature
D/Camera  (16396): Updating builder with feature: ExposureOffsetFeature
D/Camera  (16396): Updating builder with feature: FpsRangeFeature
I/Camera  (16396): refreshPreviewCaptureSession
I/ViewRootImpl@514ccc8[MainActivity](16396): onDisplayChanged oldDisplayState=2 newDisplayState=2
I/CameraManagerGlobal(16396): Camera 0 facing CAMERA_FACING_BACK state now CAMERA_STATE_ACTIVE for client com.example.issue_camera_stream API Level 2 User Id 0
I/Camera  (16396): CameraCaptureSession onClosed
W/System  (16396): A resource failed to call Surface.release. 
D/ProfileInstaller(16396): Installing profile for com.example.issue_camera_stream
I/InsetsSourceConsumer(16396): applyRequestedVisibilityToControl: visible=true, type=statusBars, host=com.example.issue_camera_stream/com.example.issue_camera_stream.MainActivity
I/e_camera_stream(16396): Background concurrent mark compact GC freed 220KB AllocSpace bytes, 13(17MB) LOS objects, 49% free, 11MB/23MB, paused 1.875ms,7.842ms total 38.226ms
I/e_camera_stream(16396): Background concurrent mark compact GC freed 192KB AllocSpace bytes, 15(21MB) LOS objects, 49% free, 10MB/20MB, paused 345us,6.137ms total 42.585ms
I/e_camera_stream(16396): Background concurrent mark compact GC freed 192KB AllocSpace bytes, 17(26MB) LOS objects, 55% free, 4981KB/10MB, paused 260us,5.214ms total 45.834ms
I/e_camera_stream(16396): Background concurrent mark compact GC freed 160KB AllocSpace bytes, 2(2708KB) LOS objects, 49% free, 10MB/20MB, paused 209us,5.748ms total 25.547ms
I/e_camera_stream(16396): Waiting for a blocking GC ProfileSaver
I/e_camera_stream(16396): WaitForGcToComplete blocked ProfileSaver on Background for 14.154ms
I/e_camera_stream(16396): Background concurrent mark compact GC freed 160KB AllocSpace bytes, 12(16MB) LOS objects, 66% free, 3141KB/9285KB, paused 26.761ms,11.164ms total 55.595ms
I/e_camera_stream(16396): Clamp target GC heap from 270MB to 256MB
I/e_camera_stream(16396): Clamp target GC heap from 279MB to 256MB
I/e_camera_stream(16396): Starting a blocking GC Alloc
I/e_camera_stream(16396): Clamp target GC heap from 279MB to 256MB
I/e_camera_stream(16396): Alloc concurrent mark compact GC freed 96KB AllocSpace bytes, 0(0B) LOS objects, 0% free, 255MB/256MB, paused 248us,1.818ms total 33.830ms
I/e_camera_stream(16396): Forcing collection of SoftReferences for 900KB allocation
I/e_camera_stream(16396): Clamp target GC heap from 279MB to 256MB
I/e_camera_stream(16396): Alloc concurrent mark compact GC freed 32KB AllocSpace bytes, 0(0B) LOS objects, 0% free, 255MB/256MB, paused 202us,3.073ms total 19.283ms
W/e_camera_stream(16396): Throwing OutOfMemoryError "Failed to allocate a 921612 byte allocation with 334768 free bytes and 326KB until OOM, target footprint 268435456, growth limit 268435456" (VmSize 22294828 kB)
I/e_camera_stream(16396): Starting a blocking GC Alloc
I/e_camera_stream(16396): Clamp target GC heap from 279MB to 256MB
I/e_camera_stream(16396): Alloc concurrent mark compact GC freed 96KB AllocSpace bytes, 0(0B) LOS objects, 0% free, 255MB/256MB, paused 166us,2.292ms total 17.247ms
I/e_camera_stream(16396): Forcing collection of SoftReferences for 900KB allocation
I/e_camera_stream(16396): Clamp target GC heap from 279MB to 256MB
I/e_camera_stream(16396): Alloc concurrent mark compact GC freed 32KB AllocSpace bytes, 0(0B) LOS objects, 0% free, 255MB/256MB, paused 170us,2.118ms total 15.072ms
W/e_camera_stream(16396): Throwing OutOfMemoryError "Failed to allocate a 921616 byte allocation with 367536 free bytes and 358KB until OOM, target footprint 268435456, growth limit 268435456" (VmSize 22294828 kB)
E/AndroidRuntime(16396): FATAL EXCEPTION: CameraBackground
E/AndroidRuntime(16396): Process: com.example.issue_camera_stream, PID: 16396
E/AndroidRuntime(16396): java.lang.OutOfMemoryError: Failed to allocate a 921616 byte allocation with 367536 free bytes and 358KB until OOM, target footprint 268435456, growth limit 268435456
E/AndroidRuntime(16396): 	at io.flutter.plugins.camera.media.ImageStreamReader.parsePlanesForYuvOrJpeg(ImageStreamReader.java:151)
E/AndroidRuntime(16396): 	at io.flutter.plugins.camera.media.ImageStreamReader.onImageAvailable(ImageStreamReader.java:105)
E/AndroidRuntime(16396): 	at io.flutter.plugins.camera.media.ImageStreamReader.lambda$subscribeListener$2$io-flutter-plugins-camera-media-ImageStreamReader(ImageStreamReader.java:210)
E/AndroidRuntime(16396): 	at io.flutter.plugins.camera.media.ImageStreamReader$$ExternalSyntheticLambda2.onImageAvailable(D8$$SyntheticClass:0)
E/AndroidRuntime(16396): 	at android.media.ImageReader$1.run(ImageReader.java:947)
E/AndroidRuntime(16396): 	at android.os.Handler.handleCallback(Handler.java:958)
E/AndroidRuntime(16396): 	at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(16396): 	at android.os.Looper.loopOnce(Looper.java:230)
E/AndroidRuntime(16396): 	at android.os.Looper.loop(Looper.java:319)
E/AndroidRuntime(16396): 	at android.os.HandlerThread.run(HandlerThread.java:67)
I/Process (16396): Sending signal. PID: 16396 SIG: 9
Lost connection to device.

Exited.

Flutter Doctor output

Doctor output

$ flutter doctor -v
[✓] Flutter (Channel stable, 3.29.2, on Ubuntu 24.04.2 LTS 6.11.0-21-generic, locale en_US.UTF-8) [135ms]
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[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0) [2.9s]
    • Android SDK at /home/user/Apps/Android/Sdk/
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      This JDK was found in the system PATH.
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      It is likely available from your distribution (e.g.: apt install pkg-config), or can be downloaded from
      https://www.freedesktop.org/wiki/Software/pkg-config/

[!] Android Studio (not installed) [19ms]
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/to/linux-android-setup for detailed instructions).

[✓] VS Code (version 1.98.2) [19ms]
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[✓] Network resources [702ms]
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! Doctor found issues in 3 categories.

The text was updated successfully, but these errors were encountered:

…read paused (flutter#166533) When streaming images using CameraController.startImageStream(), images are being post()-ed to the main looper even if it's halted. This is common when debugging. This quickly results in an OOM and the app crashes abruptly. The fix is done by counting the number of images that have been posted to the main thread but have not yet arrived. If too many images are in transit (I arbitrarily chose 3 as the maximum allowable amount) subsequent frames are dropped, until the main thread receives the pending images. A log message is emitted for each dropped frame. Fixes flutter/flutter#166533 That issue also provides a demo program.

danagbemava-nc · 2025-04-04T09:29:18Z

Reproducible using the code sample and steps outlined above.

flutter doctor -v

[✓] Flutter (Channel stable, 3.29.2, on macOS 15.4 24E248 darwin-arm64, locale en-US) [1,630ms]
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[✓] Android toolchain - develop for Android devices (Android SDK version 36.0.0) [4.2s]
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      This JDK is specified in your Flutter configuration.
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    • Nexus (wireless) (mobile)       • 00008020-001875E83A38002E                • ios            • iOS 18.4 22E240
    • iPhone 16 Pro (mobile)          • B0797AD6-E1FD-4B41-A022-2D7E2276C29B     • ios            • com.apple.CoreSimulator.SimRuntime.iOS-18-4 (simulator)
    • macOS (desktop)                 • macos                                    • darwin-arm64   • macOS 15.4 24E248 darwin-arm64
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    ! Warning: `flutter` on your path resolves to /Users/deanli/dev/stable/bin/flutter, which is not inside your current Flutter SDK checkout at /Users/deanli/dev/master. Consider adding /Users/deanli/dev/master/bin to the front of your path.
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    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 2615ab6c19 (12 hours ago), 2025-04-03 17:25:07 -0400
    • Engine revision 2615ab6c19
    • Dart version 3.8.0 (build 3.8.0-262.0.dev)
    • DevTools version 2.45.0-dev.0
    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and upgrades.

[✓] Android toolchain - develop for Android devices (Android SDK version 36.0.0) [3.8s]
    • Android SDK at /Users/deanli/Library/Android/sdk
    • Platform android-36, build-tools 36.0.0
    • Java binary at: /Users/deanli/Applications/Android Studio Meerkat Feature Drop 2024.3.2 RC 1.app/Contents/jbr/Contents/Home/bin/java
      This JDK is specified in your Flutter configuration.
      To change the current JDK, run: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13119726-b895.91)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 16.3) [2.8s]
    • Xcode at /Applications/Xcode-16.3.0.app/Contents/Developer
    • Build 16E140
    • CocoaPods version 1.16.2

[✓] Chrome - develop for the web [38ms]
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2024.3) [33ms]
    • Android Studio at /Users/deanli/Applications/Android Studio Meerkat Feature Drop 2024.3.2 RC 1.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • android-studio-dir = /Users/deanli/Applications/Android Studio Meerkat Feature Drop 2024.3.2 RC 1.app
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13119726-b895.91)

[✓] Android Studio (version 2024.2) [28ms]
    • Android Studio at /Users/deanli/Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 21.0.5+-12932927-b750.29)

[✓] VS Code (version 1.98.2) [27ms]
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.108.0

[✓] Connected device (7 available) [8.2s]
    • sdk gphone64 arm64 (mobile) • emulator-5554                            • android-arm64  • Android 16 (API 36) (emulator)
    • iPhone (wireless) (mobile)  • 00008030-0019281E01F8802E                • ios            • iOS 18.2.1 22C161
    • Dean’s iPhone (mobile)      • 1addb012eaae998ad7458e12b3a3e5095c22c4b2 • ios            • iOS 13.5.1 17F80
    • Nexus (wireless) (mobile)   • 00008020-001875E83A38002E                • ios            • iOS 18.4 22E240
    • iPhone 16 Pro (mobile)      • B0797AD6-E1FD-4B41-A022-2D7E2276C29B     • ios            • com.apple.CoreSimulator.SimRuntime.iOS-18-4 (simulator)
    • macOS (desktop)             • macos                                    • darwin-arm64   • macOS 15.4 24E248 darwin-arm64
    • Chrome (web)                • chrome                                   • web-javascript • Google Chrome 134.0.6998.166
    ! Error: Browsing on the local area network for Dean’s iPad. Ensure the device is unlocked and attached with a cable or associated with the same local area network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)

[✓] Network resources [801ms]
    • All expected network resources are available.

! Doctor found issues in 1 category.

andynewman10 · 2025-04-04T15:01:30Z

@kwikwag I wonder if this isn't due to the fact the debugger does not pause all isolates when a breakpoint is hit, see the issue I created a year and a half ago. Maybe @DanTup has some progress on this, or maybe there is an option somewhere, to be specified?

Other packages might be affected by this behavior whereby a background isolate is crashing, not the main one.

Unexplainable crashes and random 'Lost connection to device' messages make people very frustated with Flutter, as was again pointed out by a user last week.

DanTup · 2025-04-04T15:08:26Z

I wonder if this isn't due to the fact the debugger does not pause all isolates when a breakpoint is hit, see the Dart-Code/Dart-Code#4858 I created a year and a half ago. Maybe @DanTup has some progress on this, or maybe there is an option somewhere, to be specified?

I don't know enough about this issue to know if this is related, but pausing all isolates when a breakpoint is noted in dart-lang/sdk#54978. It's something that would likely be done in the VM and/or DDS (not the VS Code extension or debug adapter), but I don't know if anything has been started on this.

kwikwag · 2025-04-05T03:10:36Z

I have submitted a pull request to solve this at the plugin Android code level. This issue will also arise if the main thread is just lagging - image frames will start piling up and perhaps even form a vicious cycle to kill the app via an OOM error. So it's not just a debugger thing.

kwikwag linked a pull request Apr 4, 2025 that will close this issue

[camera_android] prevent startImageStream OOM error when main thread paused (flutter#166533) flutter/packages#8998

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danagbemava-nc added the in triage Presently being triaged by the triage team label Apr 4, 2025

reidbaker added P2 Important issues not at the top of the work list triaged-android Triaged by Android platform team labels Apr 8, 2025

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[camera_android][0.10.10+2] Pausing the debugger (reaching a breakpoint) after startImageStream() causes memory leak, then OOM crash #166533

[camera_android][0.10.10+2] Pausing the debugger (reaching a breakpoint) after startImageStream() causes memory leak, then OOM crash #166533

kwikwag commented Apr 3, 2025 •

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danagbemava-nc commented Apr 4, 2025

andynewman10 commented Apr 4, 2025 •

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DanTup commented Apr 4, 2025

kwikwag commented Apr 5, 2025

[camera_android][0.10.10+2] Pausing the debugger (reaching a breakpoint) after startImageStream() causes memory leak, then OOM crash #166533

[camera_android][0.10.10+2] Pausing the debugger (reaching a breakpoint) after startImageStream() causes memory leak, then OOM crash #166533

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kwikwag commented Apr 3, 2025 • edited Loading

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danagbemava-nc commented Apr 4, 2025

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DanTup commented Apr 4, 2025

kwikwag commented Apr 5, 2025

kwikwag commented Apr 3, 2025 •

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andynewman10 commented Apr 4, 2025 •

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