Apple

#0 0x00007fff8547f2fa in mach_msg_trap ()

#1 0x00007fff8547f96d in mach_msg ()

#2 0x00007fff88d3548d in AQCallbackSender_OutputCallback ()

#3 0x00007fff88cf7122 in AudioQueueObject::DoBufferCallback ()

#4 0x00007fff88d0187f in AudioQueueObject::WorkQueue::clear ()

#5 0x00007fff88cfbf66 in AudioQueueObject::Reset ()

#6 0x00007fff88cfc1b3 in AudioQueueObject::Stop ()

#7 0x00007fff88d148a8 in AQServer_Stop ()

#8 0x00007fff88d1794f in AudioQueueStop () <-- block here

#9 my code here

#0 0x00007fff854b9eb6 in __semwait_signal ()

#1 0x00007fff854bdcd1 in _pthread_cond_wait ()

#2 0x00007fff88ce4381 in CAGuard::Wait ()

#3 0x00007fff88cfb880 in AQConverterManager::AQConverterThread::Run ()

#4 0x00007fff88cfb8c7 in AQConverterManager::AQConverterThread::ConverterThreadEntry ()

#5 0x00007fff88ce47a3 in CAPThread::Entry ()

#6 0x00007fff854b8456 in _pthread_start ()

#7 0x00007fff854b8309 in thread_start ()

#0 0x00007fff8547f35a in semaphore_timedwait_signal_trap ()

#1 0x00007fff854bdbc2 in _pthread_cond_wait ()

#2 0x00007fff822b7a2c in CAGuard::WaitFor ()

#3 0x00007fff822b9fbb in CAGuard::WaitUntil ()

#4 0x00007fff822b8125 in HP_IOThread::WorkLoop ()

#5 0x00007fff822b7bc7 in HP_IOThread::ThreadEntry ()

#6 0x00007fff822b7af5 in CAPThread::Entry ()

#7 0x00007fff854b8456 in _pthread_start ()

#8 0x00007fff854b8309 in thread_start ()