MonoTouch: RequestReverseGeocode Crash - PullRequest
1 голос
/ 03 декабря 2011

У меня есть простой класс, который выполняет обратное геокодирование, но вызывает сбой приложения (SIGSEGV), иногда (50%), но не всегда.

Я пытался запустить его в потоке пользовательского интерфейса, в фоновых потоках и в разных частях жизненного цикла ViewController, но это кажется случайным. Когда приложение запускается, ничего особенного не происходит, в основном просто создание пользовательского интерфейса с помощью MonoTouch.Dialog

    MKReverseGeocoder coder;
    MyMKReverseGeocoderDelegate myMKReverseGeocoderDelegate;
    public void RequestReverseGeocode (CLLocationCoordinate2D coordinate, Action<MKPlacemark> callback)
    {
        myMKReverseGeocoderDelegate= new MyMKReverseGeocoderDelegate (callback); 
        coder = new MKReverseGeocoder (coordinate);
        coder.Delegate = myMKReverseGeocoderDelegate;
        coder.Start ();
    }

    internal class MyCLRequestLocationManagerDelegate : CLLocationManagerDelegate
    {
        Action<CLLocation> callback;

        public MyCLRequestLocationManagerDelegate (Action<CLLocation> callback)
        {
            this.callback = callback;
        }

        public override void UpdatedLocation (CLLocationManager manager, CLLocation newLocation, CLLocation oldLocation)
        {
            manager.StopUpdatingLocation ();
            locationManager = null;
            callback (newLocation);
        }

        public override void Failed (CLLocationManager manager, NSError error)
        {
            callback (null);
        }
    }

Подробности аварии здесь:

at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication.UIApplicationMain
(int,string[],intptr,intptr) <IL 0x0009f, 0xffffffff>
  at MonoTouch.UIKit.UIApplication.Main (string[],string,string) [0x00042] in
/Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:29
  at MonoTouch.UIKit.UIApplication.Main (string[]) [0x00000] in
/Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:34
  at AlternativeFuelingStationLocator.Application.Main (string[]) [0x00000] in
/Users/vink/Dropbox/Dev/iOS/UNIVERSAL/DOE/AlternativeFuelingStationLocator/AlternativeFuelingStationLocator/Main.cs:16
  at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object
(object,intptr,intptr,intptr) <IL 0x00050, 0xffffffff>

Native stacktrace:

   0   AlternativeFuelingStationLocator    0x000e1018
mono_handle_native_sigsegv + 408
    1   AlternativeFuelingStationLocator    0x00011d9f
mono_sigsegv_signal_handler + 351
    2   libsystem_c.dylib                   0x9ad7759b _sigtramp + 43
    3   ???                                 0xffffffff 0x0 + 4294967295
    4   MapKit                              0x01e3b4cf MKMapRectRemainder +
101422
    5   GeoServices                         0x0617f3b8 GEOTileKeyContainsKey +
166198
    6   GMM                                 0x092a3f3d
GEOTileKeyFromGMMTilePath + 31777
    7   ProtocolBuffer                      0x061dfcf1 ProtocolBuffer + 19697
    8   Foundation                          0x0192aa59
___NSURLConnectionDidFinishLoading_block_invoke_0 + 40
    9   Foundation                          0x01928e94
__65-[NSURLConnectionInternal
_withConnectionAndDelegate:onlyActive:]_block_invoke_0 + 40
    10  Foundation                          0x01929eb7
-[NSURLConnectionInternalConnection invokeForDelegate:] + 39
    11  Foundation                          0x01928e4f
-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 201
    12  Foundation                          0x01928fd5
-[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 76
    13  Foundation                          0x0186df6a
_NSURLConnectionDidFinishLoading + 43
    14  CFNetwork                           0x00c68bbd
_ZN19URLConnectionClient23_clientDidFinishLoadingEPNS_26ClientConnectionEventQueueE
+ 241
    15  CFNetwork                           0x00d355ea
_ZN19URLConnectionClient26ClientConnectionEventQueue33processAllEventsAndConsumePayloadEP20XConnectionEventInfoI12XClientEvent18XClientEventParamsEl
+ 584
    16  CFNetwork                           0x00c5f298
_ZN19URLConnectionClient13processEventsEv + 174
    17  CFNetwork                           0x00d3516b
_ZThn52_N25URLConnectionInstanceData24multiplexerClientPerformEv + 21
    18  CFNetwork                           0x00c5f137
_ZN17MultiplexerSource7performEv + 259
    19  CoreFoundation                      0x012ab97f
__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
    20  CoreFoundation                      0x0120eb73 __CFRunLoopDoSources0 +
243
    21  CoreFoundation                      0x0120e454 __CFRunLoopRun + 1012
    22  CoreFoundation                      0x0120ddb4 CFRunLoopRunSpecific +
212
    23  CoreFoundation                      0x0120dccb CFRunLoopRunInMode + 123
    24  GraphicsServices                    0x0489f879 GSEventRunModal + 207
    25  GraphicsServices                    0x0489f93e GSEventRun + 114
    26  UIKit                               0x022a6a9b UIApplicationMain + 1175
    27  ???                                 0x0e0b6fcd 0x0 + 235630541
    28  ???                                 0x0e0b6c18 0x0 + 235629592
    29  ???                                 0x0e0b6184 0x0 + 235626884
    30  ???                                 0x0e0b5fdc 0x0 + 235626460
    31  ???                                 0x0e0b612e 0x0 + 235626798
    32  AlternativeFuelingStationLocator    0x00011aef mono_jit_runtime_invoke
+ 1407
    33  AlternativeFuelingStationLocator    0x0022011a mono_runtime_invoke +
170
    34  AlternativeFuelingStationLocator    0x00222e51 mono_runtime_exec_main +
705
    35  AlternativeFuelingStationLocator    0x00222061 mono_runtime_run_main +
929
    36  AlternativeFuelingStationLocator    0x000ad6df mono_jit_exec + 239
    37  AlternativeFuelingStationLocator    0x002f41ca main + 5194
    38  AlternativeFuelingStationLocator    0x00003345 start + 53


Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.

1 Ответ

1 голос
/ 06 декабря 2011

Похоже, проблема GC (сборка мусора).

Когда я взял все вовлеченные объекты и сделал их переменными класса, проблема ушла.

...