我正在开发一个以简报风格界面为中心的iPad应用程序。我正在使用Apple的UIPageViewController执行此操作。
我遇到了很多我不完全理解的错误，我希望有人可以帮助我找到解决方案。
在这个界面中转动页面时非常偶然（这就是令人沮丧的原因，因为它不容易复制）应用程序会冻结。我在调试器中暂停了应用，这就是它向我显示的http://cl.ly/image/1y3c2x351t0T。
我很清楚这是与核心数据相关的错误。这是在执行获取请求之前发生的。我以为我解决了它，但它一直在回归。
- (void)setupBlockViews{
//Setup the block views in the correct order
NSMutableArray *blockViewsInUse = [[[NSMutableArray alloc] init] autorelease];
for(NLNewsletterPageBlock *pageBlock in self.page.pageBlocks){
NLNewsletterPageBlockView *blockView = [self blockViewForBlock:pageBlock];
if(blockView){
blockView.parentPageVC = self;
[blockViewsInUse addObject:blockView];
}
}
//recycle block views if needed
if(RECYCLE_BLOCK_VIEWS){
NSMutableArray *oldBlockViews = [[[NSMutableArray alloc] init] autorelease];
for(NLNewsletterPageBlockView *blockView in self.blockViews){
if(![blockViewsInUse containsObject:blockView]){
[oldBlockViews addObject:blockView];
}
}
for(NLNewsletterPageBlockView *blockView in oldBlockViews){
[blockView prepareForReuse];
}
[self.recycledBlockViews addObjectsFromArray:oldBlockViews];
}
self.blockViews = blockViewsInUse;
[self layoutBlockViews];
}
上面的方法，在UIPageViewController委托方法中调用setupBlockViews pageViewController：（UIPageViewController *）pageViewController spineLocationForInterfaceOrientation：（UIInterfaceOrientation）取向
在此特定实例中，尝试访问NSManagedObject的fetched属性时发生错误。即self.page.pageBlocks
我已多次确保我遵循线程，核心数据和托管对象上下文的所有规则，因此我认为它与线程和核心数据无关。
任何人都可以对此有所了解吗？那可能会发生什么？
感谢。
这是堆栈跟踪：
* thread #1: tid = 0x1c03, 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10, stop reason = signal SIGSTOP
frame #0: 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10
frame #1: 0x9a0f919b libsystem_c.dylib`pthread_mutex_lock + 595
frame #2: 0x013efb01 CoreData`-[_PFLock lock] + 33
frame #3: 0x013efada CoreData`-[NSPersistentStoreCoordinator lock] + 42
frame #4: 0x0140457e CoreData`-[NSPersistentStoreCoordinator executeRequest:withContext:error:] + 1182
frame #5: 0x014029c9 CoreData`-[NSManagedObjectContext executeFetchRequest:error:] + 569
frame #6: 0x0145ddfa CoreData`-[NSFaultHandler retainedFulfillAggregateFaultForObject:andRelationship:withContext:] + 298
frame #7: 0x0148b5cf CoreData`-[_NSFaultingMutableArray willRead] + 143
frame #8: 0x0148baf3 CoreData`-[_NSFaultingMutableArray countByEnumeratingWithState:objects:count:] + 35
frame #9: 0x0000858c iNewsletter`-[NLNewsletterPageViewController setupBlockViews](self=0x1282ff30, _cmd=0x002e1491) + 206 at NLNewsletterPageViewController.m:408
frame #10: 0x00007724 iNewsletter`-[NLNewsletterPageViewController updateLowFootprint](self=0x1282ff30, _cmd=0x002e0ad7) + 62 at NLNewsletterPageViewController.m:253
frame #11: 0x0000495b iNewsletter`-[NLNewsletterViewController pageForIndex:](, _cmd=0x002e09cc) + 884 at NLNewsletterViewController.m:392
frame #12: 0x00009fc2 iNewsletter`-[NLNewsletterVC_AppleStyle goToPage:animated:](, _cmd=0x002e0afd) + 209 at NLNewsletterVC_AppleStyle.m:163
frame #13: 0x00006781 iNewsletter`-[NLNewsletterViewController thumbnailPVRecievedTouch:withEvent:](, _cmd=0x002e0949, sender=0x128bb9d0) + 667 at NLNewsletterViewController.m:779
frame #14: 0x02aac705 libobjc.A.dylib`-[NSObject performSelector:withObject:withObject:] + 77
frame #15: 0x019e3920 UIKit`-[UIApplication sendAction:to:from:forEvent:] + 96
frame #16: 0x019e38b8 UIKit`-[UIApplication sendAction:toTarget:fromSender:forEvent:] + 61
frame #17: 0x01aa4671 UIKit`-[UIControl sendAction:to:forEvent:] + 66
frame #18: 0x01aa4bcf UIKit`-[UIControl(Internal) _sendActionsForEvents:withEvent:] + 578
frame #19: 0x01aa3d38 UIKit`-[UIControl touchesEnded:withEvent:] + 546
frame #20: 0x01a1333f UIKit`-[UIWindow _sendTouchesForEvent:] + 846
frame #21: 0x01a13552 UIKit`-[UIWindow sendEvent:] + 273
frame #22: 0x019f13aa UIKit`-[UIApplication sendEvent:] + 436
frame #23: 0x019e2cf8 UIKit`_UIApplicationHandleEvent + 9874
frame #24: 0x03472df9 GraphicsServices`_PurpleEventCallback + 339
frame #25: 0x03472ad0 GraphicsServices`PurpleEventCallback + 46
frame #26: 0x00c80bf5 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 53
frame #27: 0x00c80962 CoreFoundation`__CFRunLoopDoSource1 + 146
frame #28: 0x00cb1bb6 CoreFoundation`__CFRunLoopRun + 2118
frame #29: 0x00cb0f44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #30: 0x00cb0e1b CoreFoundation`CFRunLoopRunInMode + 123
frame #31: 0x034717e3 GraphicsServices`GSEventRunModal + 88
frame #32: 0x03471668 GraphicsServices`GSEventRun + 104
frame #33: 0x019e065c UIKit`UIApplicationMain + 1211
frame #34: 0x00002385 iNewsletter`main(argc=1, argv=0xbffff390) + 83 at main.m:16
thread #3: tid = 0x2203, 0x99d779ca libsystem_kernel.dylib`kevent64 + 10
frame #0: 0x99d779ca libsystem_kernel.dylib`kevent64 + 10
frame #1: 0x02d3fc2b libdispatch.dylib`_dispatch_mgr_invoke + 863
frame #2: 0x02d3f8cc libdispatch.dylib`_dispatch_mgr_thread + 61
thread #5: tid = 0x2403, 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #0: 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #1: 0x99d73cb0 libsystem_kernel.dylib`mach_msg + 68
frame #2: 0x00caca49 CoreFoundation`__CFRunLoopServiceMachPort + 185
frame #3: 0x00cb18d4 CoreFoundation`__CFRunLoopRun + 1380
frame #4: 0x00cb0f44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #5: 0x00cb0e1b CoreFoundation`CFRunLoopRunInMode + 123
frame #6: 0x06c67310 WebCore`RunWebThread(void*) + 608
frame #7: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
thread #6: tid = 0x2503, 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #0: 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #1: 0x99d73cb0 libsystem_kernel.dylib`mach_msg + 68
frame #2: 0x00caca49 CoreFoundation`__CFRunLoopServiceMachPort + 185
frame #3: 0x00cb18d4 CoreFoundation`__CFRunLoopRun + 1380
frame #4: 0x00cb0f44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #5: 0x00cb0e1b CoreFoundation`CFRunLoopRunInMode + 123
frame #6: 0x0259bebe Foundation`+[NSURLConnection(Loader) _resourceLoadLoop:] + 393
frame #7: 0x024e40d5 Foundation`-[NSThread main] + 76
frame #8: 0x024e4034 Foundation`__NSThread__main__ + 1304
frame #9: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
thread #9: tid = 0x2803, 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10
frame #0: 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10
frame #1: 0x9a0f919b libsystem_c.dylib`pthread_mutex_lock + 595
frame #2: 0x013efb01 CoreData`-[_PFLock lock] + 33
frame #3: 0x013efada CoreData`-[NSPersistentStoreCoordinator lock] + 42
frame #4: 0x014040cc CoreData`-[NSManagedObjectContext(_NSInternalAdditions) lockObjectStore] + 76
frame #5: 0x0146164a CoreData`-[NSManagedObjectContext(_NSInternalAdditions) _dispose:] + 490
frame #6: 0x014611c5 CoreData`-[NSManagedObjectContext _dealloc__] + 325
frame #7: 0x01461077 CoreData`-[NSManagedObjectContext dealloc] + 103
frame #8: 0x0006927e iNewsletter`-[RHManagedObjectContext dealloc](self=0x0b04c880, _cmd=0x02d4dabe) + 176 at RHManagedObjectContextManager.m:53
frame #9: 0x014262f1 CoreData`-[NSManagedObjectContext release] + 81
frame #10: 0x00c8741c CoreFoundation`CFRelease + 108
frame #11: 0x00d8ed1e CoreFoundation`-[__NSDictionaryM dealloc] + 158
frame #12: 0x02aac9ff libobjc.A.dylib`-[NSObject release] + 47
frame #13: 0x0248ddcd Foundation`__NSFinalizeThreadData + 1295
frame #14: 0x00cbf5e2 CoreFoundation`__CFTSDFinalize + 98
frame #15: 0x9a0fa9c7 libsystem_c.dylib`_pthread_tsd_cleanup + 206
frame #16: 0x9a0f380f libsystem_c.dylib`_pthread_exit + 145
frame #17: 0x9a0f60b5 libsystem_c.dylib`_pthread_workq_return + 54
frame #18: 0x9a0f5e79 libsystem_c.dylib`_pthread_wqthread + 448
thread #13: tid = 0x2c03, 0x99d76be6 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
frame #0: 0x99d76be6 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
frame #1: 0x00ceecb7 CoreFoundation`__CFSocketManager + 1255
frame #2: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
thread #15: tid = 0x2e03, 0x99d768e2 libsystem_kernel.dylib`__psynch_cvwait + 10
frame #0: 0x99d768e2 libsystem_kernel.dylib`__psynch_cvwait + 10
frame #1: 0x9a0f8280 libsystem_c.dylib`_pthread_cond_wait + 833
frame #2: 0x9a17e0e0 libsystem_c.dylib`pthread_cond_timedwait$UNIX2003 + 70
frame #3: 0x07fcc82b JavaScriptCore`WTF::ThreadCondition::timedWait(WTF::Mutex&, double) + 123
frame #4: 0x07fa0bd9 JavaScriptCore`JSC::BlockAllocator::blockFreeingThreadMain() + 121
frame #5: 0x07fcbb8c JavaScriptCore`WTF::threadEntryPoint(void*) + 76
frame #6: 0x07fcc0e5 JavaScriptCore`WTF::wtfThreadEntryPoint(void*) + 21
frame #7: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
thread #16: tid = 0x2f03, 0x99d768e2 libsystem_kernel.dylib`__psynch_cvwait + 10
frame #0: 0x99d768e2 libsystem_kernel.dylib`__psynch_cvwait + 10
frame #1: 0x9a0f8280 libsystem_c.dylib`_pthread_cond_wait + 833
frame #2: 0x9a17e095 libsystem_c.dylib`pthread_cond_wait$UNIX2003 + 71
frame #3: 0x07ed0ad7 JavaScriptCore`JSC::SlotVisitor::drainFromShared(JSC::SlotVisitor::SharedDrainMode) + 439
frame #4: 0x07ed085a JavaScriptCore`JSC::MarkStackThreadSharedData::markingThreadMain() + 234
frame #5: 0x07fcbb8c JavaScriptCore`WTF::threadEntryPoint(void*) + 76
frame #6: 0x07fcc0e5 JavaScriptCore`WTF::wtfThreadEntryPoint(void*) + 21
frame #7: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
thread #17: tid = 0x3003, 0x99d770ee libsystem_kernel.dylib`__workq_kernreturn + 10
frame #0: 0x99d770ee libsystem_kernel.dylib`__workq_kernreturn + 10
frame #1: 0x9a0f60ac libsystem_c.dylib`_pthread_workq_return + 45
frame #2: 0x9a0f5e79 libsystem_c.dylib`_pthread_wqthread + 448
thread #19: tid = 0x3203, 0x99d770ee libsystem_kernel.dylib`__workq_kernreturn + 10
frame #0: 0x99d770ee libsystem_kernel.dylib`__workq_kernreturn + 10
frame #1: 0x9a0f60ac libsystem_c.dylib`_pthread_workq_return + 45
frame #2: 0x9a0f5e79 libsystem_c.dylib`_pthread_wqthread + 448
thread #21: tid = 0x3403, 0x99d770ee libsystem_kernel.dylib`__workq_kernreturn + 10
frame #0: 0x99d770ee libsystem_kernel.dylib`__workq_kernreturn + 10
frame #1: 0x9a0f60ac libsystem_c.dylib`_pthread_workq_return + 45
frame #2: 0x9a0f5e79 libsystem_c.dylib`_pthread_wqthread + 448
thread #22: tid = 0x3503, 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10
frame #0: 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10
frame #1: 0x9a0f919b libsystem_c.dylib`pthread_mutex_lock + 595
frame #2: 0x013efb01 CoreData`-[_PFLock lock] + 33
frame #3: 0x013efada CoreData`-[NSPersistentStoreCoordinator lock] + 42
frame #4: 0x014040cc CoreData`-[NSManagedObjectContext(_NSInternalAdditions) lockObjectStore] + 76
frame #5: 0x014219c2 CoreData`_PFFaultHandlerLookupRow + 306
frame #6: 0x01421887 CoreData`-[NSFaultHandler fulfillFault:withContext:forIndex:] + 39
frame #7: 0x014214c1 CoreData`_PF_FulfillDeferredFault + 225
frame #8: 0x01421336 CoreData`_sharedIMPL_pvfk_core + 70
frame #9: 0x014521a0 CoreData`_pvfk_3 + 32
frame #10: 0x000063ab iNewsletter`-[NLNewsletterViewController thumbnailPickerView:imageAtIndex:](, _cmd=0x002e0f16, thumbnailPickerView=0x128bb9d0) + 239 at NLNewsletterViewController.m:723
frame #11: 0x000515c5 iNewsletter`__33-[ThumbnailPickerView reloadData]_block_invoke119(.block_descriptor=0x128c2fc0) + 81 at ThumbnailPickerView.m:230
frame #12: 0x02d3a53f libdispatch.dylib`_dispatch_call_block_and_release + 15
frame #13: 0x02d4c014 libdispatch.dylib`_dispatch_client_callout + 14
frame #14: 0x02d3c418 libdispatch.dylib`_dispatch_queue_drain + 239
frame #15: 0x02d3c2a6 libdispatch.dylib`_dispatch_queue_invoke + 59
frame #16: 0x02d3d280 libdispatch.dylib`_dispatch_root_queue_drain + 231
frame #17: 0x02d3d450 libdispatch.dylib`_dispatch_worker_thread2 + 39
frame #18: 0x9a0f5e72 libsystem_c.dylib`_pthread_wqthread + 441
thread #14: tid = 0x2d03, 0x99d770ee libsystem_kernel.dylib`__workq_kernreturn + 10
frame #0: 0x99d770ee libsystem_kernel.dylib`__workq_kernreturn + 10
frame #1: 0x9a0f60ac libsystem_c.dylib`_pthread_workq_return + 45
frame #2: 0x9a0f5e79 libsystem_c.dylib`_pthread_wqthread + 448
thread #24: tid = 0x3703, 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #0: 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #1: 0x99d73cb0 libsystem_kernel.dylib`mach_msg + 68
frame #2: 0x00caca49 CoreFoundation`__CFRunLoopServiceMachPort + 185
frame #3: 0x00cb18d4 CoreFoundation`__CFRunLoopRun + 1380
frame #4: 0x00cb0f44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #5: 0x00cb0e1b CoreFoundation`CFRunLoopRunInMode + 123
frame #6: 0x068340b0 WebCore`WebCore::runLoaderThread(void*) + 208
frame #7: 0x07fcbb8c JavaScriptCore`WTF::threadEntryPoint(void*) + 76
frame #8: 0x07fcc0e5 JavaScriptCore`WTF::wtfThreadEntryPoint(void*) + 21
frame #9: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
下一次发生时，另一个堆栈跟踪：
thread #1: tid = 0x1c03, 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10, stop reason = signal SIGSTOP
frame #0: 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10
frame #1: 0x9a0f919b libsystem_c.dylib`pthread_mutex_lock + 595
frame #2: 0x013efb01 CoreData`-[_PFLock lock] + 33
frame #3: 0x013efada CoreData`-[NSPersistentStoreCoordinator lock] + 42
frame #4: 0x014040cc CoreData`-[NSManagedObjectContext(_NSInternalAdditions) lockObjectStore] + 76
frame #5: 0x014219c2 CoreData`_PFFaultHandlerLookupRow + 306
frame #6: 0x01421887 CoreData`-[NSFaultHandler fulfillFault:withContext:forIndex:] + 39
frame #7: 0x014214c1 CoreData`_PF_FulfillDeferredFault + 225
frame #8: 0x01421336 CoreData`_sharedIMPL_pvfk_core + 70
frame #9: 0x014521d0 CoreData`_pvfk_4 + 32
frame #10: 0x00016617 iNewsletter`-[NLNewsletter isReady](self=0x0b058010, _cmd=0x02679b09) + 53 at NLNewsletter.m:175
frame #11: 0x0002f7f8 iNewsletter`-[NLNewsletterContainerVC displayNewsletter](self=0x10bbe700, _cmd=0x002e4ea8) + 174 at NLNewsletterContainerVC.m:156
frame #12: 0x0002f743 iNewsletter`-[NLNewsletterContainerVC viewDidFinishPresenting](self=0x10bbe700, _cmd=0x002e1d74) + 79 at NLNewsletterContainerVC.m:145
frame #13: 0x02aac663 libobjc.A.dylib`-[NSObject performSelector:] + 62
frame #14: 0x0000b2f2 iNewsletter`__43-[NLStandarVC presentVC:fromView:animated:]_block_invoke(.block_descriptor=0x10b07830) + 289 at NLStandarVC.m:142
frame #15: 0x0000b499 iNewsletter`__43-[NLStandarVC presentVC:fromView:animated:]_block_invoke105(, finished='\x01') + 24 at NLStandarVC.m:159
frame #16: 0x01a2b446 UIKit`-[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] + 223
frame #17: 0x01a1e3b6 UIKit`-[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 237
frame #18: 0x01a1e554 UIKit`-[UIViewAnimationState animationDidStop:finished:] + 68
frame #19: 0x018f67d8 QuartzCore`CA::Layer::run_animation_callbacks(void*) + 284
frame #20: 0x02d4c014 libdispatch.dylib`_dispatch_client_callout + 14
frame #21: 0x02d3c7d5 libdispatch.dylib`_dispatch_main_queue_callback_4CF + 296
frame #22: 0x00cb1af5 CoreFoundation`__CFRunLoopRun + 1925
frame #23: 0x00cb0f44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #24: 0x00cb0e1b CoreFoundation`CFRunLoopRunInMode + 123
frame #25: 0x034717e3 GraphicsServices`GSEventRunModal + 88
frame #26: 0x03471668 GraphicsServices`GSEventRun + 104
frame #27: 0x019e065c UIKit`UIApplicationMain + 1211
frame #28: 0x00002385 iNewsletter`main(argc=1, argv=0xbffff390) + 83 at main.m:16
thread #3: tid = 0x2203, 0x99d779ca libsystem_kernel.dylib`kevent64 + 10
frame #0: 0x99d779ca libsystem_kernel.dylib`kevent64 + 10
frame #1: 0x02d3fc2b libdispatch.dylib`_dispatch_mgr_invoke + 863
frame #2: 0x02d3f8cc libdispatch.dylib`_dispatch_mgr_thread + 61
thread #5: tid = 0x2403, 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #0: 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #1: 0x99d73cb0 libsystem_kernel.dylib`mach_msg + 68
frame #2: 0x00caca49 CoreFoundation`__CFRunLoopServiceMachPort + 185
frame #3: 0x00cb18d4 CoreFoundation`__CFRunLoopRun + 1380
frame #4: 0x00cb0f44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #5: 0x00cb0e1b CoreFoundation`CFRunLoopRunInMode + 123
frame #6: 0x06c67310 WebCore`RunWebThread(void*) + 608
frame #7: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
thread #7: tid = 0x2603, 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #0: 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #1: 0x99d73cb0 libsystem_kernel.dylib`mach_msg + 68
frame #2: 0x00caca49 CoreFoundation`__CFRunLoopServiceMachPort + 185
frame #3: 0x00cb18d4 CoreFoundation`__CFRunLoopRun + 1380
frame #4: 0x00cb0f44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #5: 0x00cb0e1b CoreFoundation`CFRunLoopRunInMode + 123
frame #6: 0x0259bebe Foundation`+[NSURLConnection(Loader) _resourceLoadLoop:] + 393
frame #7: 0x024e40d5 Foundation`-[NSThread main] + 76
frame #8: 0x024e4034 Foundation`__NSThread__main__ + 1304
frame #9: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
thread #9: tid = 0x2803, 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10
frame #0: 0x99d7691a libsystem_kernel.dylib`__psynch_mutexwait + 10
frame #1: 0x9a0f919b libsystem_c.dylib`pthread_mutex_lock + 595
frame #2: 0x013efb01 CoreData`-[_PFLock lock] + 33
frame #3: 0x013efada CoreData`-[NSPersistentStoreCoordinator lock] + 42
frame #4: 0x014040cc CoreData`-[NSManagedObjectContext(_NSInternalAdditions) lockObjectStore] + 76
frame #5: 0x0146164a CoreData`-[NSManagedObjectContext(_NSInternalAdditions) _dispose:] + 490
frame #6: 0x014611c5 CoreData`-[NSManagedObjectContext _dealloc__] + 325
frame #7: 0x01461077 CoreData`-[NSManagedObjectContext dealloc] + 103
frame #8: 0x0006927e iNewsletter`-[RHManagedObjectContext dealloc](self=0x10b14960, _cmd=0x02d4dabe) + 176 at RHManagedObjectContextManager.m:53
frame #9: 0x014262f1 CoreData`-[NSManagedObjectContext release] + 81
frame #10: 0x00c8741c CoreFoundation`CFRelease + 108
frame #11: 0x00d8ed1e CoreFoundation`-[__NSDictionaryM dealloc] + 158
frame #12: 0x02aac9ff libobjc.A.dylib`-[NSObject release] + 47
frame #13: 0x0248ddcd Foundation`__NSFinalizeThreadData + 1295
frame #14: 0x00cbf5e2 CoreFoundation`__CFTSDFinalize + 98
frame #15: 0x9a0fa9c7 libsystem_c.dylib`_pthread_tsd_cleanup + 206
frame #16: 0x9a0f380f libsystem_c.dylib`_pthread_exit + 145
frame #17: 0x9a0f60b5 libsystem_c.dylib`_pthread_workq_return + 54
frame #18: 0x9a0f5e79 libsystem_c.dylib`_pthread_wqthread + 448
thread #13: tid = 0x2c03, 0x99d76be6 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
frame #0: 0x99d76be6 libsystem_kernel.dylib`select$DARWIN_EXTSN + 10
frame #1: 0x00ceecb7 CoreFoundation`__CFSocketManager + 1255
frame #2: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
* thread #15: tid = 0x2e03, 0x99d768e2 libsystem_kernel.dylib`__psynch_cvwait + 10
frame #0: 0x99d768e2 libsystem_kernel.dylib`__psynch_cvwait + 10
frame #1: 0x9a0f8280 libsystem_c.dylib`_pthread_cond_wait + 833
frame #2: 0x9a17e0e0 libsystem_c.dylib`pthread_cond_timedwait$UNIX2003 + 70
frame #3: 0x07fcc82b JavaScriptCore`WTF::ThreadCondition::timedWait(WTF::Mutex&, double) + 123
frame #4: 0x07fa0bd9 JavaScriptCore`JSC::BlockAllocator::blockFreeingThreadMain() + 121
frame #5: 0x07fcbb8c JavaScriptCore`WTF::threadEntryPoint(void*) + 76
frame #6: 0x07fcc0e5 JavaScriptCore`WTF::wtfThreadEntryPoint(void*) + 21
frame #7: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
thread #16: tid = 0x2f03, 0x99d768e2 libsystem_kernel.dylib`__psynch_cvwait + 10
frame #0: 0x99d768e2 libsystem_kernel.dylib`__psynch_cvwait + 10
frame #1: 0x9a0f8280 libsystem_c.dylib`_pthread_cond_wait + 833
frame #2: 0x9a17e095 libsystem_c.dylib`pthread_cond_wait$UNIX2003 + 71
frame #3: 0x07ed0ad7 JavaScriptCore`JSC::SlotVisitor::drainFromShared(JSC::SlotVisitor::SharedDrainMode) + 439
frame #4: 0x07ed085a JavaScriptCore`JSC::MarkStackThreadSharedData::markingThreadMain() + 234
frame #5: 0x07fcbb8c JavaScriptCore`WTF::threadEntryPoint(void*) + 76
frame #6: 0x07fcc0e5 JavaScriptCore`WTF::wtfThreadEntryPoint(void*) + 21
frame #7: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
thread #17: tid = 0x3003, 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #0: 0x99d747d2 libsystem_kernel.dylib`mach_msg_trap + 10
frame #1: 0x99d73cb0 libsystem_kernel.dylib`mach_msg + 68
frame #2: 0x00caca49 CoreFoundation`__CFRunLoopServiceMachPort + 185
frame #3: 0x00cb18d4 CoreFoundation`__CFRunLoopRun + 1380
frame #4: 0x00cb0f44 CoreFoundation`CFRunLoopRunSpecific + 276
frame #5: 0x00cb0e1b CoreFoundation`CFRunLoopRunInMode + 123
frame #6: 0x068340b0 WebCore`WebCore::runLoaderThread(void*) + 208
frame #7: 0x07fcbb8c JavaScriptCore`WTF::threadEntryPoint(void*) + 76
frame #8: 0x07fcc0e5 JavaScriptCore`WTF::wtfThreadEntryPoint(void*) + 21
frame #9: 0x9a0f35b7 libsystem_c.dylib`_pthread_start + 344
答案 0 :(得分：3)
我找到了一段代码，它运行在后台线程上，该线程正在访问在主线程上创建的NSManagedObject。我以前错过了。互斥错误现在消失了。