App Hanging -[TSLocationManager queue:type:]

[DigifloHendrix]

Your Environment

• Plugin version: 4.16.2 (react-native-background-geolocation)
• Platform: iOS
• OS version: 15.8.2
• Device manufacturer / model: iPhone8,1
• React Native version: 0.73.6
• Plugin config:

{
  enableHeadless: true,
  disableLocationAuthorizationAlert: false,
  locationAuthorizationRequest: 'Always',
  backgroundPermissionRationale: {
    title: "Allow *** to access to this device's location in the background?",
    message: 'In order to track your activity in the background and to make sure you get job offers in your area, please enable "{backgroundPermissionOptionLabel}" location permission',
    positiveAction: 'Change to {backgroundPermissionOptionLabel}',
    negativeAction: 'Cancel',
  },
  desiredAccuracy: BackgroundGeolocation.DESIRED_ACCURACY_NAVIGATION,
  distanceFilter: 10,
  activityType: BackgroundGeolocation.ACTIVITY_TYPE_AUTOMOTIVE_NAVIGATION,
  stopTimeout: 5,
  debug: false,
  logLevel: __DEV__ ? BackgroundGeolocation.LOG_LEVEL_INFO : BackgroundGeolocation.LOG_LEVEL_ERROR,
  stopOnTerminate: true,
  startOnBoot: false,
  url: `${getApiBase()}/devices/telemetry/sync`,
  method: 'POST',
  batchSync: false,
  autoSync: false,
  preventSuspend: true,
  heartbeatInterval: 60,
  notification: {
    title: 'Background tracking engaged',
    text: '*** is tracking your current location to ensure you get job offers in your area',
  },
}

Expected Behavior

The background geolocation should work consistently without hanging.

Actual Behavior

The app is hanging for at least 2000 ms when processing location updates.

Steps to Reproduce

1. Initialize the GeolocationService
2. Start location tracking
3. Receive location updates
4. Attempt to process and sync telemetry data to the server

Context

The app is using react-native-background-geolocation for tracking location in the background. The issue occurs when processing location updates and attempting to sync telemetry data. The app seems to be hanging in the queue:type: method of TSLocationManager.

Debug logs

Thread Stack Trace

Thread 0:

* Occurred in non-app
  libsystem_kernel.dylib
  __ulock_wait + 0x1688
  (2 hidden frames)

* libsystem_platform.dylib
  _os_unfair_lock_lock_slow + 0x1760

* libobjc.A.dylib
  objc_sync_enter + 0x51b8

* *** (In App)
  -[TSLocationManager queue:type:] + 0xa98e34

* *** (In App)
  -[TSLocationManager onUpdateCurrentPosition:location:type:] + 0xa94da4

* *** (In App)
  __49-[TSLocationManager createLocationChangedHandler]_block_invoke + 0xa94824

* *** (In App)
  -[LocationManager locationManager:didUpdateLocations:] + 0xaad478

* Called from CoreLocation
  CLClientStopVehicleHeadingUpdates + 0x2b548
  (10 hidden frames)

* CoreLocation
  CLCopyAppsUsingLocation + 0xde90

* CoreLocation
  CLCopyTechnologiesInUse + 0xa0a4

* LocationSupport
  <redacted> + 0x2384

* CoreFoundation
  __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 0x6d688

* CoreFoundation
  __CFRunLoopDoBlocks + 0x6e4ac

* CoreFoundation
  __CFRunLoopRun + 0xb1d8

* CoreFoundation
  CFRunLoopRunSpecific + 0x1e170

* GraphicsServices
  GSEventRunModal + 0x1984

* UIKitCore
  -[UIApplication _run] + 0x4e5a84

* UIKitCore
  UIApplicationMain + 0x27ef74

* *** (In App)
  main + 0x72f0

* Called from unknown
  <redacted> at 0x103c1c4d0

Thread 23:

* Occurred in non-app
  libsystem_kernel
  +0x001688
  __ulock_wait
  (4 hidden frames)

* libdispatch
  +0x004d5c
  _dlock_wait

* libdispatch
  +0x004b48
  _dispatch_thread_event_wait_slow$VARIANT$mp

* libdispatch
  +0x011bf8
  __DISPATCH_WAIT_FOR_QUEUE__

* libdispatch
  +0x01181c
  _dispatch_sync_f_slow

* *** (In App)
  +0xabfc44
  -[TSQueue runOnMainQueueWithoutDeadlocking:]

* *** (In App)
  +0xa98f60
  -[TSLocationManager queue:type:]

* *** (In App)
  +0xa908b8
  -[TSLocationManager getCurrentPosition:]

* *** (In App)
  +0x1a111c
  -[RNBackgroundGeolocation getCurrentPosition:success:failure:]

* Called from CoreFoundation
  +0x020cec
  __invoking___
  (2 hidden frames)

* CoreFoundation
  +0x03cdd4
  -[NSInvocation invoke]

* CoreFoundation
  +0x071208
  -[NSInvocation invokeWithTarget:]

* *** (In App)
  +0x2752f4
  -[RCTModuleMethod invokeWithBridge:module:arguments:]

* *** (In App)
  +0x2773f8
  facebook::react::invokeInner

* *** (In App)
  +0x277048
  facebook::react::RCTNativeModule::invoke

* Called from libdispatch
  +0x063090
  _dispatch_call_block_and_release
  (5 hidden frames)

* libdispatch
  +0x064090
  _dispatch_client_callout

* libdispatch
  +0x00a738
  _dispatch_lane_serial_drain$VARIANT$mp

* libdispatch
  +0x00b1f0
  _dispatch_lane_invoke$VARIANT$mp

* libdispatch
  +0x014ec4
  _dispatch_workloop_worker_thread

* libsystem_pthread
  +0x001dfc
  _pthread_wqthread