Question

我在尝试实例化一个对象时遇到TyphoonComponentFactory.m崩溃 - 这行崩溃了EXC_BAD_ACCESS：

279:[pool setObject:instance forKey:definition.key];

或者有时这个：

276:id instance = [pool objectForKey:definition.key];

所有变量 - 池，实例，定义，在它崩溃时正好在调试器中。在程序执行的早期（但不是很早，即相同的runloop）我已经设置了我的TyphoonComponentFactory并使其成为默认工厂。有什么可能导致这个？我有一个模糊的理论认为，工厂对于来电者来说太迟了，但......非常弱。

台风版1.8.2。这是集会：

#import "EndpointQueueAssembly.h"
#import "EndpointQueue.h"
#import "URLStorage.h"
#import "EndpointHTTPMethods.h"
#import "EndpointURLStrings.h"
#import "HTTPRequestOperationFactory.h"
#import "Services.h"
#import "ChatImageCheck.h"

@implementation EndpointQueueAssembly

-(id)endpointQueue
{

    return [TyphoonDefinition withClass: [EndpointQueue class] properties:^(TyphoonDefinition *definition) {

        [definition setScope:TyphoonScopeSingleton];

    }];

}

-(id)urlStorage
{

    return [TyphoonDefinition withClass: [URLStorage class]];

}

-(id)endpointHTTPMethods
{

    return [TyphoonDefinition withClass: [EndpointHTTPMethods class]];

}

-(id)chatImageCheck
{

    return [TyphoonDefinition withClass: [ChatImageCheck class]];

}

-(id)endpointURLStrings
{

    return [TyphoonDefinition withClass: [EndpointURLStrings class] properties:^(TyphoonDefinition *definition) {

        [definition injectProperty:@selector(urlStorage)];

    }];

}

-(id)httpRequestOperationFactory
{

    return [TyphoonDefinition withClass: [HTTPRequestOperationFactory class] properties:^(TyphoonDefinition* definition) {

        [definition injectProperty:@selector(endpointHTTPMethods)];

        [definition injectProperty:@selector(endpointURLStrings)];

    }];

}

-(id)services
{

    return [TyphoonDefinition withClass:[Services class] properties:^(TyphoonDefinition *definition) {

        [definition setScope:TyphoonScopeSingleton];

    }];

}

@end

堆栈跟踪，对于第276行的崩溃：

Thread 65, Queue : NSOperationQueue 0x12434e90
#0  0x0473756b in -[__NSDictionaryM objectForKey:] ()
#1  0x0033c2dd in -[TyphoonComponentFactory sharedInstanceForDefinition:fromPool:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Pods/Typhoon/Source/Factory/TyphoonComponentFactory.m:276
#2  0x0033cb34 in -[TyphoonComponentFactory(TyphoonDefinitionRegisterer) objectForDefinition:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Pods/Typhoon/Source/Factory/TyphoonComponentFactory.m:315
#3  0x0033b01d in -[TyphoonComponentFactory componentForKey:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Pods/Typhoon/Source/Factory/TyphoonComponentFactory.m:151
#4  0x046a291d in __invoking___ ()
#5  0x046a282a in -[NSInvocation invoke] ()
#6  0x00335f69 in -[TyphoonBlockComponentFactory forwardInvocation:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Pods/Typhoon/Source/Factory/Block/TyphoonBlockComponentFactory.m:97
#7  0x0469e2da in ___forwarding___ ()
#8  0x0469e0ee in __forwarding_prep_0___ ()
#9  0x00022647 in +[CascadeItemRenderOperation isCurrentProfileWithDictionary:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Shared/CascadeItemRenderOperation.m:166
#10 0x00022d3b in +[CascadeItemRenderOperation countOfUnreadChatsWithDictionary:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Shared/CascadeItemRenderOperation.m:205
#11 0x00021c7c in +[CascadeItemRenderOperation renderWithDictionary:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Shared/CascadeItemRenderOperation.m:79
#12 0x001002b2 in -[GrindrGridViewPreRenderOperation main] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Grindr/GrindrGridViewPreRenderOperation.m:38
#13 0x02d0dc79 in -[__NSOperationInternal _start:] ()
#14 0x02c8a9c8 in -[NSOperation start] ()
#15 0x02d0ff44 in __NSOQSchedule_f ()
#16 0x04d164d0 in _dispatch_client_callout ()
#17 0x04d02fe0 in _dispatch_async_redirect_invoke ()
#18 0x04d164d0 in _dispatch_client_callout ()
#19 0x04d04eb7 in _dispatch_root_queue_drain ()
#20 0x04d05127 in _dispatch_worker_thread2 ()
#21 0x05045dab in _pthread_wqthread ()

相关对象的值：

self：TyphoonBlockComponentFactory，注册表中提供了所有相关对象。定义：“定义：class ='AuthenticationDetails'，key ='authenticationDetails'” pool：NSDictionary，0个键/值对 instance：id，uninitialised pointer。

这是当时主线程的堆栈 - 还包含台风引用：

Thread 1, Queue : com.apple.main-thread
#0  0x05081802 in __psynch_mutexwait ()
#1  0x05047945 in _pthread_mutex_lock ()
#2  0x050477ac in pthread_mutex_lock ()
#3  0x0443a498 in objc_sync_enter ()
#4  0x0033c288 in -[TyphoonComponentFactory sharedInstanceForDefinition:fromPool:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Pods/Typhoon/Source/Factory/TyphoonComponentFactory.m:275
#5  0x0033cb34 in -[TyphoonComponentFactory(TyphoonDefinitionRegisterer) objectForDefinition:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Pods/Typhoon/Source/Factory/TyphoonComponentFactory.m:315
#6  0x0033b01d in -[TyphoonComponentFactory componentForKey:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Pods/Typhoon/Source/Factory/TyphoonComponentFactory.m:151
#7  0x046a291d in __invoking___ ()
#8  0x046a282a in -[NSInvocation invoke] ()
#9  0x00335f69 in -[TyphoonBlockComponentFactory forwardInvocation:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Pods/Typhoon/Source/Factory/Block/TyphoonBlockComponentFactory.m:97
#10 0x0469e2da in ___forwarding___ ()
#11 0x0469e0ee in __forwarding_prep_0___ ()
#12 0x000735e7 in -[Profile(Custom) isMe] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Utils/Profile+Custom.m:74
#13 0x0022a0eb in -[Profile(GrindrGridViewHash) grindrGridViewHash] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Shared/Profile+GrindrGridViewHash.m:84
#14 0x000ff3ed in -[GrindrGridViewPreRenderCache preRenderManagedObjectsForBackgroundExecution:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Grindr/GrindrGridViewPreRenderCache.m:105
#15 0x000ff174 in -[GrindrGridViewPreRenderCache preRenderManagedObjects:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Grindr/GrindrGridViewPreRenderCache.m:87
#16 0x00041c8f in -[GrindrGridView endUpdates] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Shared/GrindrGridView.m:825
#17 0x002343d2 in -[CascadeDataSource controllerDidChangeContent:] at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Grindr/CascadeDataSource.m:137
#18 0x0276e347 in -[NSFetchedResultsController(PrivateMethods) _managedObjectContextDidChange:] ()
#19 0x02d0c049 in __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke ()
#20 0x04709f04 in __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ ()
#21 0x04661efb in _CFXNotificationPost ()
#22 0x02c45e41 in -[NSNotificationCenter postNotificationName:object:userInfo:] ()
#23 0x02670a13 in -[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] ()
#24 0x0270ffaf in -[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:withDeletions:withUpdates:withRefreshes:] ()
#25 0x0266beb8 in -[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] ()
#26 0x0266b649 in -[NSManagedObjectContext processPendingChanges] ()
#27 0x0269a4cc in -[NSManagedObjectContext(_NestedContextSupport) _parentProcessSaveRequest:inContext:error:] ()
#28 0x02712a14 in __82-[NSManagedObjectContext(_NestedContextSupport) executeRequest:withContext:error:]_block_invoke ()
#29 0x02694b81 in internalBlockToNSManagedObjectContextPerform ()
#30 0x04d164d0 in _dispatch_client_callout ()
#31 0x04d05439 in _dispatch_barrier_sync_f_slow_invoke ()
#32 0x04d164d0 in _dispatch_client_callout ()
#33 0x04d04726 in _dispatch_main_queue_callback_4CF ()
#34 0x0471343e in __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ ()
#35 0x046545cb in __CFRunLoopRun ()
#36 0x046539d3 in CFRunLoopRunSpecific ()
#37 0x046537eb in CFRunLoopRunInMode ()
#38 0x053ee5ee in GSEventRunModal ()
#39 0x053ee42b in GSEventRun ()
#40 0x03513f9b in UIApplicationMain ()
#41 0x0000e704 in main at /Users/nicklocking/Documents/primus-ios/NBFIOSCore/Shared/main.m:18

进一步更新：

似乎Typhoon违反TyphoonScopeObjectGraph，这显然不是线程安全的。我们将所有非单身人士转换为TyphoonScopePrototype，现在我们在第59行[_storage removeLastObject]的TyphoonCallStack -pop中遇到崩溃。似乎是某种例外，但调试器不会吐出任何有用的东西。

Answer 1

无法评论您的帖子（声誉不足）：

是的，如果您从不同的线程创建组件 - 它可能是崩溃的原因。 Typhoon现在不是线程安全的（我们使用的NSMutableArray，NSMutableDictionary在创建对象时不是线程安全的。）

你可以通过将Typhoon调用包装成串行队列或同步语句来修复它。或者我们可以在Typhoon内部进行修复（但它将是Typhoon 2.0功能 - 难以同时维护两个版本）

<强>更新

Typhoon 2.0现在是线程安全的。

Answer 2

这是我们的解决方案，它看起来效果很好：

#import "TyphoonComponentFactory+SwizzledObjectForDefinition.h"
#import "JRSwizzle.h"

@implementation TyphoonComponentFactory (SwizzledObjectForDefinition)

+ (void)swizzleMethods
{
    SEL objectForDefinitionSelector = sel_registerName("objectForDefinition:");
    [TyphoonComponentFactory jr_swizzleMethod: objectForDefinitionSelector
                                   withMethod: @selector(swizzledObjectForDefinition:)
                                        error: nil];
}

// Synchronize objectForDefinition
- (id)swizzledObjectForDefinition:(TyphoonDefinition *)definition
{
    @synchronized(self) {
        return [self swizzledObjectForDefinition:definition];
    }
}

@end

我们还将所有范围声明为Singleton或Prototype。

在Typhoon中创建对象时崩溃

2 个答案: