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在我的iPad应用程序中,我经常收到崩溃报告,但例外情况为EXC_RESOURCE
和子类型WAKEUPS
。 然而奇怪的是,消息说(Limit 150/sec) Observed 0/sec over 300 sec
如何避免异常EXC_RESOURCE - WAKEUPS?
它怎么能成为一个例外时,它观察到0唤醒/秒? - 我如何避免它?
我关心的原因是报告的生成延迟了应用程序中的一些时间关键线程。 我们主要是从麦克风录音和同时播放音频,并且生成报告时,音频会断断续续。
该异常总是由3个线程之一触发:主线程,AURemoteIO: IOThread
和com.apple.coreaudio.AQClient
。请参见下面的报告片段:
Hardware Model: iPad2,5
Code Type: ARM (Native)
Parent Process: debugserver [3109]
Date/Time: 2016-05-18 12:15:59.59 +0200
Launch Time: 2016-05-18 12:11:44.44 +0200
OS Version: iOS 9.1 (13B143)
Report Version: 104
Exception Type: EXC_RESOURCE
Exception Subtype: WAKEUPS
Exception Message: (Limit 150/sec) Observed 0/sec over 300 secs
Exception Note: NON-FATAL CONDITION (this is NOT a crash)
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Attributed:
0 CoreFoundation 0x25ef8c4e 0x25ef6000 + 11342
1 CoreFoundation 0x25fab760 0x25ef6000 + 743264
...
Thread 10 name: AURemoteIO::IOThread
Thread 10:
0 libsystem_kernel.dylib 0x382acff0 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x382acdf4 mach_msg + 40
2 AudioToolbox 0x2544ec50 AURemoteIO::IOThread::Run() + 104
3 AudioToolbox 0x25452500 AURemoteIO::IOThread::Entry(void*) + 8
4 AudioToolbox 0x25369fee CAPThread::Entry(CAPThread*) + 186
5 libsystem_pthread.dylib 0x3836385a _pthread_body + 138
6 libsystem_pthread.dylib 0x383637ce _pthread_start + 110
7 libsystem_pthread.dylib 0x38361724 thread_start + 8
...
Thread 12 name: com.apple.coreaudio.AQClient
Thread 12:
0 libsystem_kernel.dylib 0x382acff0 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x382acdf4 mach_msg + 40
2 CoreFoundation 0x25fad8c4 __CFRunLoopServiceMachPort + 136
3 CoreFoundation 0x25fabc4c __CFRunLoopRun + 1036
4 CoreFoundation 0x25eff118 CFRunLoopRunSpecific + 520
5 CoreFoundation 0x25efef04 CFRunLoopRunInMode + 108
6 AudioToolbox 0x253810b4 GenericRunLoopThread::Entry(void*) + 132
7 AudioToolbox 0x25369fee CAPThread::Entry(CAPThread*) + 186
8 libsystem_pthread.dylib 0x3836385a _pthread_body + 138
9 libsystem_pthread.dylib 0x383637ce _pthread_start + 110
10 libsystem_pthread.dylib 0x38361724 thread_start + 8