应用程序拒绝 SIGABRT iOS

【问题标题】：App rejection SIGABRT iOS应用程序拒绝 SIGABRT iOS
【发布时间】：2014-04-16 09:54:34
【问题描述】：

我最近因为 EXC_CRASH (SIGABRT) 异常而遭到应用拒绝。 异常是从 try-catch 块中引发的。

所以我有两个主要问题：

  1. objective c 中的 try-catch 子句不捕获所有异常吗？

  2. 下面有符号化的崩溃日志。在线程 7（崩溃的那个）上，我尝试在 NSMutableDictionary 中写入。相同的字典也在其他线程上使用（修改）。这可能是这次崩溃的原因吗？ （也许 2 个线程试图一次修改字典）。如果是这样，为什么在崩溃日志中没有第二个线程尝试做同样的事情？另外：@synchronize(a NSString for identify that variable) {change my NSMutableDictionary / read from my NSMutableDictionary} 能解决我的问题吗？

谢谢。

符号化的崩溃日志：

Incident Identifier: 1A82F42E-59AA-499A-8C1D-CE744808F566
CrashReporter Key:   4f2c8fa05c83e9d455c232dbd2fa63e852283d0e
Hardware Model:      xxx
Version:             1.0 (1.0)
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

OS Version:          iOS 7.1 (11D167)
Report Version:      104

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Triggered by Thread:  7

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0:
0   libsystem_kernel.dylib          0x0000000191179ca0 mach_msg_trap + 8
1   CoreFoundation                  0x000000018408a570 __CFRunLoopServiceMachPort + 180
2   CoreFoundation                  0x0000000184088764 __CFRunLoopRun + 932
3   CoreFoundation                  0x0000000183fc96cc CFRunLoopRunSpecific + 448
4   GraphicsServices                0x0000000189c65c08 GSEventRunModal + 164
5   UIKit                           0x00000001870fafd8 UIApplicationMain + 1152
6   brandnooz                       0x00000001000df500 main (main.m:16)
7   libdyld.dylib                   0x0000000191097a9c start + 0

Thread 1 name:  Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0   libsystem_kernel.dylib          0x0000000191179aa8 kevent64 + 8
1   libdispatch.dylib               0x000000019107d998 _dispatch_mgr_thread + 48

Thread 2:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 3 name:  Dispatch queue: com.apple.root.default-priority
Thread 3:
0   libsystem_kernel.dylib          0x0000000191179cdc semaphore_wait_trap + 8
1   brandnooz                       0x000000010006fe9c __41-[RequestsViewController waitForRequests]_block_invoke (RequestsViewController.m:79)
2   libdispatch.dylib               0x000000019107c010 _dispatch_call_block_and_release + 20
3   libdispatch.dylib               0x000000019107bfd0 _dispatch_client_callout + 12
4   libdispatch.dylib               0x00000001910832b4 _dispatch_root_queue_drain + 552
5   libdispatch.dylib               0x00000001910834f8 _dispatch_worker_thread2 + 72
6   libsystem_pthread.dylib         0x00000001912116b8 _pthread_wqthread + 352
7   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 4:
0   libsystem_kernel.dylib          0x0000000191179ca0 mach_msg_trap + 8
1   CoreFoundation                  0x000000018408a570 __CFRunLoopServiceMachPort + 180
2   CoreFoundation                  0x0000000184088700 __CFRunLoopRun + 832
3   CoreFoundation                  0x0000000183fc96cc CFRunLoopRunSpecific + 448
4   Foundation                      0x0000000184b652c0 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 292
5   Foundation                      0x0000000184bc2d74 -[NSRunLoop(NSRunLoop) run] + 92
6   brandnooz                       0x0000000100115ed8 +[GAI threadMain:] + 68
7   Foundation                      0x0000000184c4c408 __NSThread__main__ + 996
8   libsystem_pthread.dylib         0x0000000191213e18 _pthread_body + 164
9   libsystem_pthread.dylib         0x0000000191213d70 _pthread_start + 136
10  libsystem_pthread.dylib         0x0000000191211550 thread_start + 0

Thread 5 name:  Dispatch queue: com.apple.root.default-priority
Thread 5:
0   libsystem_kernel.dylib          0x0000000191192448 __psynch_rw_rdlock + 8
1   libobjc.A.dylib                 0x0000000190aaab84 lookUpImpOrForward + 164
2   libobjc.A.dylib                 0x0000000190ab43f8 _objc_msgSend_uncached_impcache + 56
3   brandnooz                       0x00000001000a14f8 -[AFHTTPRequestOperation hasAcceptableStatusCode] (AFHTTPRequestOperation.m:203)
4   brandnooz                       0x00000001000a0710 -[AFHTTPRequestOperation error] (AFHTTPRequestOperation.m:137)
5   brandnooz                       0x00000001000ebed8 -[AFJSONRequestOperation error] (AFJSONRequestOperation.m:99)
6   brandnooz                       0x00000001000ec128 __64-[AFJSONRequestOperation setCompletionBlockWithSuccess:failure:]_block_invoke (AFJSONRequestOperation.m:121)
7   brandnooz                       0x0000000100075a20 __47-[AFURLConnectionOperation setCompletionBlock:]_block_invoke (AFURLConnectionOperation.m:321)
8   Foundation                      0x0000000184c34168 __103+[__NSOperationInternal _observeValueForKeyPath:ofObject:changeKind:oldValue:newValue:indexes:context:]_block_invoke96 + 24
9   libdispatch.dylib               0x000000019107c010 _dispatch_call_block_and_release + 20
10  libdispatch.dylib               0x000000019107bfd0 _dispatch_client_callout + 12
11  libdispatch.dylib               0x00000001910832b4 _dispatch_root_queue_drain + 552
12  libdispatch.dylib               0x00000001910834f8 _dispatch_worker_thread2 + 72
13  libsystem_pthread.dylib         0x00000001912116b8 _pthread_wqthread + 352
14  libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 6 name:  Dispatch queue: com.apple.root.high-priority
Thread 6:
0   libsystem_kernel.dylib          0x0000000191192394 __psynch_cvwait + 8
1   Foundation                      0x0000000184c338e0 -[__NSOperationInternal _waitUntilFinished:] + 100
2   brandnooz                       0x00000001000b71f0 -[ApiConnection get:] (ApiConnection.m:152)
3   brandnooz                       0x0000000100104b2c __38-[ApiRequests getTranslationsForCode:]_block_invoke (ApiRequests.m:185)
4   libdispatch.dylib               0x000000019107c010 _dispatch_call_block_and_release + 20
5   libdispatch.dylib               0x000000019107bfd0 _dispatch_client_callout + 12
6   libdispatch.dylib               0x00000001910832b4 _dispatch_root_queue_drain + 552
7   libdispatch.dylib               0x00000001910834f8 _dispatch_worker_thread2 + 72
8   libsystem_pthread.dylib         0x00000001912116b8 _pthread_wqthread + 352
9   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 7 name:  Dispatch queue: com.apple.root.high-priority
Thread 7 Crashed:
0   libsystem_kernel.dylib          0x000000019119258c __pthread_kill + 8
1   libsystem_c.dylib               0x0000000191126804 abort + 108
2   libsystem_malloc.dylib          0x00000001911cc5c0 nanozone_error + 292
3   libsystem_malloc.dylib          0x00000001911cbd5c nano_free_definite_size + 128
4   CoreFoundation                  0x00000001840ca268 __rehashd + 236
5   CoreFoundation                  0x0000000183fd1814 -[__NSDictionaryM setObject:forKey:] + 648
6   brandnooz                       0x0000000100103f84 __22-[ApiRequests getFaq:]_block_invoke (ApiRequests.m:120)
7   libdispatch.dylib               0x000000019107c010 _dispatch_call_block_and_release + 20
8   libdispatch.dylib               0x000000019107bfd0 _dispatch_client_callout + 12
9   libdispatch.dylib               0x00000001910832b4 _dispatch_root_queue_drain + 552
10  libdispatch.dylib               0x00000001910834f8 _dispatch_worker_thread2 + 72
11  libsystem_pthread.dylib         0x00000001912116b8 _pthread_wqthread + 352
12  libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 8 name:  Dispatch queue: com.apple.root.high-priority
Thread 8:
0   libsystem_kernel.dylib          0x0000000191192394 __psynch_cvwait + 8
1   Foundation                      0x0000000184c338e0 -[__NSOperationInternal _waitUntilFinished:] + 100
2   brandnooz                       0x00000001000b71f0 -[ApiConnection get:] (ApiConnection.m:152)
3   brandnooz                       0x00000001001038e8 __24-[ApiRequests getTerms:]_block_invoke (ApiRequests.m:84)
4   libdispatch.dylib               0x000000019107c010 _dispatch_call_block_and_release + 20
5   libdispatch.dylib               0x000000019107bfd0 _dispatch_client_callout + 12
6   libdispatch.dylib               0x00000001910832b4 _dispatch_root_queue_drain + 552
7   libdispatch.dylib               0x00000001910834f8 _dispatch_worker_thread2 + 72
8   libsystem_pthread.dylib         0x00000001912116b8 _pthread_wqthread + 352
9   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 9:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 10 name:  Dispatch queue: com.apple.root.high-priority
Thread 10:
0   libsystem_kernel.dylib          0x0000000191192394 __psynch_cvwait + 8
1   Foundation                      0x0000000184c338e0 -[__NSOperationInternal _waitUntilFinished:] + 100
2   brandnooz                       0x00000001000b71f0 -[ApiConnection get:] (ApiConnection.m:152)
3   brandnooz                       0x00000001001060b4 __46-[ApiRequests getProductsWithKickbackForCache]_block_invoke (ApiRequests.m:307)
4   libdispatch.dylib               0x000000019107c010 _dispatch_call_block_and_release + 20
5   libdispatch.dylib               0x000000019107bfd0 _dispatch_client_callout + 12
6   libdispatch.dylib               0x00000001910832b4 _dispatch_root_queue_drain + 552
7   libdispatch.dylib               0x00000001910834f8 _dispatch_worker_thread2 + 72
8   libsystem_pthread.dylib         0x00000001912116b8 _pthread_wqthread + 352
9   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 11:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 12 name:  AFNetworking
Thread 12:
0   libsystem_platform.dylib        0x000000019120cdc8 _platform_memmove + 40
1   CoreFoundation                  0x0000000183fe205c dataWrite + 176
2   CoreFoundation                  0x0000000183fe1dc8 CFWriteStreamWrite + 440
3   brandnooz                       0x0000000100077e3c -[AFURLConnectionOperation connection:didReceiveData:] (AFURLConnectionOperation.m:797)
4   Foundation                      0x0000000184b82894 __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 76
5   Foundation                      0x0000000184b82780 -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 228
6   Foundation                      0x0000000184b82678 -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 76
7   Foundation                      0x0000000184b82a7c _NSURLConnectionDidReceiveData + 76
8   CFNetwork                       0x0000000183caf320 ___ZN27URLConnectionClient_Classic23_delegate_cacheTrifectaEPK20_CFCachedURLResponseU13block_pointerFvvE_block_invoke + 428
9   CFNetwork                       0x0000000183cab6e0 ___ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 + 92
10  CoreFoundation                  0x0000000183fc908c CFArrayApplyFunction + 64
11  CFNetwork                       0x0000000183c20be8 RunloopBlockContext::perform() + 132
12  CFNetwork                       0x0000000183c20a64 MultiplexerSource::perform() + 284
13  CFNetwork                       0x0000000183c208a0 MultiplexerSource::_perform(void*) + 56
14  CoreFoundation                  0x000000018408b040 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 20
15  CoreFoundation                  0x000000018408a39c __CFRunLoopDoSources0 + 252
16  CoreFoundation                  0x0000000184088634 __CFRunLoopRun + 628
17  CoreFoundation                  0x0000000183fc96cc CFRunLoopRunSpecific + 448
18  Foundation                      0x0000000184b652c0 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 292
19  Foundation                      0x0000000184bc2d74 -[NSRunLoop(NSRunLoop) run] + 92
20  brandnooz                       0x000000010007533c +[AFURLConnectionOperation networkRequestThreadEntryPoint:] (AFURLConnectionOperation.m:193)
21  Foundation                      0x0000000184c4c408 __NSThread__main__ + 996
22  libsystem_pthread.dylib         0x0000000191213e18 _pthread_body + 164
23  libsystem_pthread.dylib         0x0000000191213d70 _pthread_start + 136
24  libsystem_pthread.dylib         0x0000000191211550 thread_start + 0

Thread 13 name:  com.apple.NSURLConnectionLoader
Thread 13:
0   libsystem_malloc.dylib          0x00000001911bf020 free + 72
1   CoreFoundation                  0x0000000184088b38 __CFRunLoopRun + 1912
2   CoreFoundation                  0x0000000183fc96cc CFRunLoopRunSpecific + 448
3   Foundation                      0x0000000184bbe424 +[NSURLConnection(Loader) _resourceLoadLoop:] + 344
4   Foundation                      0x0000000184c4c408 __NSThread__main__ + 996
5   libsystem_pthread.dylib         0x0000000191213e18 _pthread_body + 164
6   libsystem_pthread.dylib         0x0000000191213d70 _pthread_start + 136
7   libsystem_pthread.dylib         0x0000000191211550 thread_start + 0

Thread 14:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 15:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 16:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 17:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 18:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 19:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 20:
0   libsystem_kernel.dylib          0x0000000191192e74 __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000191211548 start_wqthread + 0

Thread 21 name:  com.apple.CFSocket.private
Thread 21:
0   libsystem_kernel.dylib          0x000000019119276c __select + 8
1   libsystem_pthread.dylib         0x0000000191213e18 _pthread_body + 164
2   libsystem_pthread.dylib         0x0000000191213d70 _pthread_start + 136
3   libsystem_pthread.dylib         0x0000000191211550 thread_start + 0

Thread 7 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000000   x1: 0x0000000000000000   x2: 0x0000000000000000   x3: 0x0000000000000000
    x4: 0x0000000000000000   x5: 0x0000000000000000   x6: 0x00676f6c7379732f   x7: 0x0000000000000110
    x8: 0x000000000c000000   x9: 0x0000000004000000  x10: 0x000000000000000a  x11: 0x0000000000000007
    x12: 0x0000000000000037  x13: 0x00000001001814dc  x14: 0x0000000000000071  x15: 0x0000000004060401
    x16: 0x0000000000000148  x17: 0x0000000001030301  x18: 0x0000000000000000  x19: 0x0000000000000006
    x20: 0x0000000103180000  x21: 0x0000000100258000  x22: 0x00000001911d3053  x23: 0x0000000178037e20
    x24: 0x0000000000000000  x25: 0x00000001914e4000  x26: 0x00000001914e4000  x27: 0x0000000000000003
    x28: 0x0000000000000003  fp: 0x000000010317fc50   lr: 0x000000019121516c
    sp: 0x000000010317fc30   pc: 0x000000019119258c cpsr: 0x00000000

代码示例：

-(void) getFaq:(NSString*)ln
{
    [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
    [self.isDone setObject:dispatch_group_create() forKey:TAG_GET_FAQ];

    dispatch_group_async(self.isDone[TAG_GET_FAQ],dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{

        @try
        {
            ApiConnection* apiConnection = [[ApiConnection alloc] init];

            NSString* apiPath = [TAG_API_PATH_GET_FAQ stringByReplacingOccurrencesOfString:@"LANGUAGE" withString:ln];
            id JSON=[apiConnection get:apiPath];

            [self.responses setObject:JSON forKey:TAG_GET_FAQ];                  //  <-- crash
            [self.processedResponses setObject:JSON forKey:TAG_GET_FAQ];
        }
        @catch (NSException *exception) {
            id tracker = [[GAI sharedInstance] defaultTracker];
            NSString* message = [NSString stringWithFormat:@"Exception ApiRequests: %@", exception];
            [tracker send:[[GAIDictionaryBuilder createExceptionWithDescription:message withFatal:NO] build]];

            NSLog(@"Error in [ApiRequests getFaq] - possible null response");
            [self.responses setObject:[[NSMutableDictionary alloc] init] forKey:TAG_GET_FAQ];
            [self.processedResponses setObject:[[NSMutableDictionary alloc] init] forKey:TAG_GET_FAQ];
        }
        @finally
        {
            [self setNetworkActivityIndicatorVisibility:TAG_GET_FAQ];
        }
    });
}


Constants.h

extern NSString* const TAG_GET_FAQ;
extern NSString* const TAG_API_PATH_GET_FAQ;

Constants.m

NSString* const TAG_GET_FAQ = @"fooBar1";
NSString* const TAG_API_PATH_GET_FAQ = @"fooBar2";

【问题讨论】：

  • 检查JSON 是否为nil。对于setObject:forKey: API，obj 和 key 都应该不为零。如果可能的话，在ApiConnection 代码中添加get: 方法的代码。
  • 请不要像在 Java 中那样使用@try @catch。这不是 Objective-C 上合适的编程模式。此外，无论如何，您的崩溃都不是由异常引起的。

标签： ios multithreading exception-handling crash sigabrt


【解决方案1】：

您应该确保它们的键不为零。密钥应符合 NSCopying 协议。

见here

在 Apple 文档

中 
The key for value. Note that when using key-value coding, the key must be a string (see “Key-Value Coding Fundamentals”).

source

【讨论】：

  • 键不能为 nil ...它是我在 Constants.h 源文件中声明并在 Constants.m 源文件中初始化的常量 :)
【解决方案2】：

看起来有些内存损坏，这可能发生在您的代码中的任何地方。不会抛出异常，因此不会捕获任何异常。

【讨论】：

    【解决方案3】：

    仔细阅读你的代码，

    TAG_API_PATH_GET_FAQ = @"fooBar2";

    表示

    [TAG_API_PATH_GET_FAQ stringByReplacingOccurrencesOfString:@"LANGUAGE" withString:ln];

    将是fooBar2。

    我猜这会让

                id JSON=[apiConnection get:apiPath];

    返回零。我这么说是因为你的寄存器

    Thread 7 crashed with ARM Thread State (64-bit):
x0: 0x0000000000000000   x1: 0x0000000000000000   x2: 0x0000000000000000   x3: 0x0000000000000000
x4: 0x0000000000000000   x5: 0x0000000000000000   x6: 0x00676f6c7379732f   x7: 0x0000000000000110
x8: 0x000000000c000000   x9: 0x0000000004000000  x10: 0x000000000000000a  x11: 0x0000000000000007

    大部分都是零（一个将 nil 返回到底层例程的故事）。

    您是否忘记使用正确的值更新 fooBar2？如果您故意掩盖了它的真正价值，请您用更接近实际示例的内容替换您的帖子。

    此外，try-catch 的使用不符合 Apple 的风格（您可能不同意）。 try-catch 是针对编程错误而不是对外部系统做出不良响应。

    如果您有一个热门数据结构（并发添加/删除），则值得投资于记录您的数据的所有更新并可能有断言。

    【讨论】：

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