GCD dispatch_async DISPATCH_QUEUE_PRIORITY_DEFAULT EXC_BAD_ACCESS崩溃

我想将日志写入全局默认队列中的文件。它在iOS 6中运行良好，但即使块为空也会在iOS 5中崩溃。GCD dispatch_async DISPATCH_QUEUE_PRIORITY_DEFAULT EXC_BAD_ACCESS崩溃

dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ 
//fprintf(s_logfp, "[%s] %s\n", [[[NSDate date] hipuClientLogDescription] UTF8String], [log UTF8String]); 
});

它去所有，如果合适的我的代码是这样的：

logQueue = dispatch_queue_create("com.hipu.clientlog", NULL); 
dispatch_async(logQueue, ^{ 
    fprintf(s_logfp, "[%s] %s\n", [[[NSDate date] hipuClientLogDescription] UTF8String], [log UTF8String]); 
});

调用堆栈：

#0 0x01dff0b0 in objc_msgSend() 
#1 0x01dffd40 in objc_retain() 
#2 0x0044a712 in HpWriteLogToDisk at /Users/tanqiyu/Documents/hipu_work/iOS/trunk/HipuClient/HpFoundation/HpFoundation/HpLog.m:60 
#3 0x003420b6 in -[HpEngine initWithRootDir:appVersion:] at /Users/tanqiyu/Documents/hipu_work/iOS/trunk/HipuClient/HpEngine/HpEngine/Engine/HpEngine.m:69 
#4 0x00341a8d in +[HpEngine initEngineWithRootDir:appVersion:] at /Users/tanqiyu/Documents/hipu_work/iOS/trunk/HipuClient/HpEngine/HpEngine/Engine/HpEngine.m:28 
#5 0x0000abcd in -[AppDelegate application:didFinishLaunchingWithOptions:] at /Users/tanqiyu/Documents/hipu_work/iOS/trunk/HipuClient/HipuClient/HipuClient/AppDelegate.m:35 
#6 0x00f5a9d6 in -[UIApplication _callInitializationDelegatesForURL:payload:suspended:]() 
#7 0x00f5b8a6 in -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:]() 
#8 0x00f6a743 in -[UIApplication handleEvent:withNewEvent:]() 
#9 0x00f6b1f8 in -[UIApplication sendEvent:]() 
#10 0x00f5eaa9 in _UIApplicationHandleEvent() 
#11 0x02325fa9 in PurpleEventCallback() 
#12 0x021661c5 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__() 
#13 0x020cb022 in __CFRunLoopDoSource1() 
#14 0x020c990a in __CFRunLoopRun() 
#15 0x020c8db4 in CFRunLoopRunSpecific() 
#16 0x020c8ccb in CFRunLoopRunInMode() 
#17 0x00f5b2a7 in -[UIApplication _run]() 
#18 0x00f5ca9b in UIApplicationMain() 
#19 0x0000a97d in main at

来源

2013-05-03 qiyu

发布崩溃的堆栈跟踪。 – 2013-05-03 03:39:10

dispatch_async（dispatch_get_global_queue（DISPATCH_QUEUE_PRIORITY_DEFAULT，0），^ {}）;为我工作 – 2013-05-03 03:41:09

rob-mayoff，我已经发布了调用堆栈，谢谢。 – qiyu 2013-05-03 04:58:20

如果它在你一定破坏内存块没有代码崩溃。

当你解决这个问题：

1）确保slogfp是一个全球性的，并不会改变。

2）如果string是零，你会崩溃试图使用一个char *是零。建议您先创建一个NSString，然后测试其有效性，然后将其分派给日志记录。

来源

2013-05-03 11:52:52

GCD dispatch_async DISPATCH_QUEUE_PRIORITY_DEFAULT EXC_BAD_ACCESS崩溃

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