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在后台播放音频崩溃应用程序

分类: 技术问答 • 2022-07-23 14:16:19
问题描述：

我正在使用DigitalDj的AudioStreamer项目（https://github.com/DigitalDJ/AudioStreamer）在我的应用程序的背景中流式传输音频。当应用程序处于前台时，一切正常，但有时它会在后台崩溃。这是一个非常奇怪的崩溃日志。在后台播放音频崩溃应用程序

 Incident Identifier: F6F6B97C-1943-460D-8A4E-5608B47E6989 
CrashReporter Key: 3a88f20a9e18f468445bddc212b7aa673c6dc89b 
Hardware Model:  iPod4,1 
Process:   iMixtapes [1075] 
Path:   /var/mobile/Applications/7C64D2D8-0C63-4A73-8452-763209481693/iMixtapes.app/iMixtapes 
Identifier:  iMixtapes 
Version:   ??? (???) 
Code Type:  ARM (Native) 
Parent Process: launchd [1] 

Date/Time:  2011-02-18 13:24:15.849 +0530 
OS Version:  iPhone OS 4.2.1 (8C148) 
Report Version: 104 

Exception Type: 00000020 
Exception Codes: 0x8badf00d 
Highlighted Thread: 6 

Application Specific Information: 
iMixtapes[1075] has active assertions beyond permitted time: 
{(
    <SBProcessAssertion: 0x66ce420> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66f2970> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66c60b0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b4970> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66c7850> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66e55a0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66c5e40> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b47d0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66eaba0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66ebfe0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66f1da0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66afb90> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b18b0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x275940> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b1820> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x2c88a0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b7b70> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b7700> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66c6230> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66793a0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66ad010> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66c7820> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b7d20> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b7180> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66f2530> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66f2720> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b72a0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66f21e0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66f2650> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b73c0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b7830> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x6691270> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66c6010> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66b1ac0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x2733f0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep , 
    <SBProcessAssertion: 0x66e74e0> identifier: UIKitBackgroundCompletionTask process: iMixtapes[1075] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:1075 preventSuspend preventIdleSleep 
)} 

Elapsed total CPU time (seconds): 86.390 (user 41.340, system 45.050), 14% CPU 
Elapsed application CPU time (seconds): 6.290, 1% CPU 

Thread 0: 
0 libSystem.B.dylib    0x31093268 mach_msg_trap + 20 
1 libSystem.B.dylib    0x31095354 mach_msg + 44 
2 CoreFoundation     0x30416648 __CFRunLoopServiceMachPort + 88 
3 CoreFoundation     0x30415ed2 __CFRunLoopRun + 350 
4 CoreFoundation     0x30415c80 CFRunLoopRunSpecific + 224 
5 CoreFoundation     0x30415b88 CFRunLoopRunInMode + 52 
6 GraphicsServices    0x31eec4a4 GSEventRunModal + 108 
7 GraphicsServices    0x31eec550 GSEventRun + 56 
8 UIKit       0x313cf322 -[UIApplication _run] + 406 
9 UIKit       0x313cce8c UIApplicationMain + 664 
10 iMixtapes      0x00002348 main (main.m:14) 
11 iMixtapes      0x000022fc start + 32 

Thread 1: 
0 libSystem.B.dylib    0x310bf974 kevent + 24 
1 libSystem.B.dylib    0x31169704 _dispatch_mgr_invoke + 88 
2 libSystem.B.dylib    0x31169174 _dispatch_queue_invoke + 96 
3 libSystem.B.dylib    0x31168b98 _dispatch_worker_thread2 + 120 
4 libSystem.B.dylib    0x3110d24a _pthread_wqthread + 258 
5 libSystem.B.dylib    0x31105970 start_wqthread + 0 

Thread 2: 
0 libSystem.B.dylib    0x31093268 mach_msg_trap + 20 
1 libSystem.B.dylib    0x31095354 mach_msg + 44 
2 CoreFoundation     0x30416648 __CFRunLoopServiceMachPort + 88 
3 CoreFoundation     0x30415ed2 __CFRunLoopRun + 350 
4 CoreFoundation     0x30415c80 CFRunLoopRunSpecific + 224 
5 CoreFoundation     0x30415b88 CFRunLoopRunInMode + 52 
6 WebCore       0x35b32124 RunWebThread(void*) + 332 
7 libSystem.B.dylib    0x3110c886 _pthread_start + 242 
8 libSystem.B.dylib    0x31101a88 thread_start + 0 

Thread 3: 
0 libSystem.B.dylib    0x31093268 mach_msg_trap + 20 
1 libSystem.B.dylib    0x31095354 mach_msg + 44 
2 CoreFoundation     0x30416648 __CFRunLoopServiceMachPort + 88 
3 CoreFoundation     0x30415ed2 __CFRunLoopRun + 350 
4 CoreFoundation     0x30415c80 CFRunLoopRunSpecific + 224 
5 CoreFoundation     0x30415b88 CFRunLoopRunInMode + 52 
6 Foundation      0x302fb5f6 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 206 
7 Foundation      0x302d9192 -[NSThread main] + 38 
8 Foundation      0x302d2242 __NSThread__main__ + 966 
9 libSystem.B.dylib    0x3110c886 _pthread_start + 242 
10 libSystem.B.dylib    0x31101a88 thread_start + 0 

Thread 4: 
0 libSystem.B.dylib    0x3110b9f0 __semwait_signal + 24 
1 libSystem.B.dylib    0x310c07ec _pthread_cond_wait + 748 
2 libSystem.B.dylib    0x310c03d2 pthread_cond_wait + 26 
3 CoreMedia      0x3290cb14 WaitOnCondition + 4 
4 CoreMedia      0x3290ca5a FigSemaphoreWaitRelative + 66 
5 MediaToolbox     0x32a8bc9c fpa_AsyncMovieControlThread + 48 
6 CoreMedia      0x32928f76 figThreadMain + 166 
7 libSystem.B.dylib    0x3110c886 _pthread_start + 242 
8 libSystem.B.dylib    0x31101a88 thread_start + 0 

Thread 5: 
0 libSystem.B.dylib    0x310b768c select$DARWIN_EXTSN + 20 
1 CoreFoundation     0x3044d662 __CFSocketManager + 582 
2 libSystem.B.dylib    0x3110c886 _pthread_start + 242 
3 libSystem.B.dylib    0x31101a88 thread_start + 0 

Thread 6: 
0 libSystem.B.dylib    0x3110b9f0 __semwait_signal + 24 
1 libSystem.B.dylib    0x310c07ec _pthread_cond_wait + 748 
2 libSystem.B.dylib    0x310c03d2 pthread_cond_wait + 26 
3 iMixtapes      0x000946d8 -[AudioStreamer enqueueBuffer] (AudioStreamer.m:1885) 
4 iMixtapes      0x00095514 -[AudioStreamer handleAudioPackets:numberBytes:numberPackets:packetDescriptions:] (AudioStreamer.m:2196) 
5 iMixtapes      0x0008f4ce MyPacketsProc (AudioStreamer.m:151) 
6 AudioToolbox     0x3281e376 AudioFileStreamWrapper::CallPacketsProc(unsigned long, unsigned long, void const*, AudioStreamPacketDescription*, bool) + 122 
7 AudioToolbox     0x3283a87a MP3AudioStream::GeneratePackets(AudioFileStreamContinuation&) + 818 
8 AudioToolbox     0x3281e5e4 AudioFileStreamWrapper::ParseBytes(unsigned long, void const*, unsigned long) + 180 
9 AudioToolbox     0x3281de6c AudioFileStreamParseBytes + 132 
10 iMixtapes      0x0009410e -[AudioStreamer handleReadFromStream:eventType:] (AudioStreamer.m:1754) 
11 iMixtapes      0x0008f58e ASReadStreamCallBack (AudioStreamer.m:222) 
12 CoreFoundation     0x3044ef6a _signalEventSync + 70 
13 CoreFoundation     0x3044f842 _cfstream_solo_signalEventSync + 58 
14 CoreFoundation     0x3044c7ee _CFStreamSignalEvent + 326 
15 CoreFoundation     0x3044c6a0 CFReadStreamSignalEvent + 4 
16 CFNetwork      0x32fe2a66 HTTPReadStream::streamEvent(unsigned long) + 94 
17 CFNetwork      0x32fe2adc HTTPReadStream::_streamCB(__CFReadStream*, unsigned long, void*) + 24 
18 CoreFoundation     0x3044ef6a _signalEventSync + 70 
19 CoreFoundation     0x3044eefe _cfstream_shared_signalEventSync + 198 
20 CoreFoundation     0x304447d6 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 6 
21 CoreFoundation     0x304165b0 __CFRunLoopDoSources0 + 376 
22 CoreFoundation     0x30415e54 __CFRunLoopRun + 224 
23 CoreFoundation     0x30415c80 CFRunLoopRunSpecific + 224 
24 CoreFoundation     0x30415b88 CFRunLoopRunInMode + 52 
25 Foundation      0x302d28e4 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 196 
26 iMixtapes      0x00091000 -[AudioStreamer startInternal] (AudioStreamer.m:843) 
27 Foundation      0x302d9192 -[NSThread main] + 38 
28 Foundation      0x302d2242 __NSThread__main__ + 966 
29 libSystem.B.dylib    0x3110c886 _pthread_start + 242 
30 libSystem.B.dylib    0x31101a88 thread_start + 0 

Thread 7: 
0 libSystem.B.dylib    0x31093268 mach_msg_trap + 20 
1 libSystem.B.dylib    0x31095354 mach_msg + 44 
2 CoreFoundation     0x30416648 __CFRunLoopServiceMachPort + 88 
3 CoreFoundation     0x30415ed2 __CFRunLoopRun + 350 
4 CoreFoundation     0x30415c80 CFRunLoopRunSpecific + 224 
5 CoreFoundation     0x30415b88 CFRunLoopRunInMode + 52 
6 AudioToolbox     0x327a84ba GenericRunLoopThread::RunLoop() + 30 
7 AudioToolbox     0x327bb306 TRunLoop<AQClient>::Entry(void*) + 90 
8 AudioToolbox     0x327a81d2 CAPThread::Entry(CAPThread*) + 138 
9 libSystem.B.dylib    0x3110c886 _pthread_start + 242 
10 libSystem.B.dylib    0x31101a88 thread_start + 0 

Unknown thread crashed with unknown flavor: 5, state_count: 1

任何人都可以请帮我解决这个问题。

感谢

答

您的应用程序被终止，而辅助线程继续工作。您必须清理干净并在要求时终止。

注意：您可以象征性地描述您的崩溃情况，从而更轻松地评估调用堆栈。

+0

你好贾斯汀请看编辑的崩溃日志（符号化）。我没有找到任何理由为什么应用程序被操作系统终止。你能帮忙吗？ – Saurabh 2011-02-18 09:12:57

答

当您创建后台任务，如果你正在使用

- beginBackgroundTaskWithExpirationHandler:

确保你的代码，当你从OS无效的通知，结束任务播放音频。

如果你没有处理它，它会创建你在上面提到的崩溃。

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