macOS App occasionally hanging on quit

[olilarkin]

possibly related to changes in 907e38e

I have experienced this several times when debugging in xcode and hitting command-Q

Thread 1 Queue : com.apple.main-thread (serial) #0 0x00007fff71082866 in __psynch_cvwait () #1 0x00000001012ba1e5 in _pthread_cond_wait () #2 0x00007fff44a2ca3e in HALB_Guard::WaitFor(unsigned long long) () #3 0x00007fff44a2c7cc in HALB_IOThread::_WaitForState(unsigned int) () #4 0x00007fff44a32035 in HALB_IOThread::StopAndWaitForState(unsigned int) () #5 0x00007fff44a31e2d in HALC_ProxyIOContext::StopIO() () #6 0x00007fff44a31d8f in HALC_ProxyIOContext::_StopIOProc(int ()(unsigned int, AudioTimeStamp const, AudioBufferList const*, AudioTimeStamp const*, AudioBufferList*, AudioTimeStamp const*, void*)) () #7 0x00007fff44a31acd in HALC_ProxyIOContext::StopIOProc(int ()(unsigned int, AudioTimeStamp const, AudioBufferList const*, AudioTimeStamp const*, AudioBufferList*, AudioTimeStamp const*, void*)) () #8 0x00007fff44a31937 in HALC_ShellDevice::StopIOProc(int ()(unsigned int, AudioTimeStamp const, AudioBufferList const*, AudioTimeStamp const*, AudioBufferList*, AudioTimeStamp const*, void*)) () #9 0x00007fff44a316c4 in HAL_HardwarePlugIn_DeviceStop(AudioHardwarePlugInInterface**, unsigned int, int ()(unsigned int, AudioTimeStamp const, AudioBufferList const*, AudioTimeStamp const*, AudioBufferList*, AudioTimeStamp const*, void*)) () #10 0x00007fff44a314f5 in HALPlugIn::DeviceStopIOProc(HALObject const&, int ()(unsigned int, AudioTimeStamp const, AudioBufferList const*, AudioTimeStamp const*, AudioBufferList*, AudioTimeStamp const*, void*)) () #11 0x00007fff44a314aa in HALDevice::StopIOProc(int ()(unsigned int, AudioTimeStamp const, AudioBufferList const*, AudioTimeStamp const*, AudioBufferList*, AudioTimeStamp const*, void*)) () #12 0x00007fff44a310dd in AudioDeviceStop () #13 0x00000001000f8732 in RtApiCore::stopStream() at /Users/oli/Dev/iPlug2/Dependencies/IPlug/RTAudio/RtAudio.cpp:1609 #14 0x00000001000f88a0 in RtApiCore::abortStream() at /Users/oli/Dev/iPlug2/Dependencies/IPlug/RTAudio/RtAudio.cpp:1636 #15 0x000000010008f639 in RtAudio::abortStream() at /Users/oli/Dev/iPlug2/Dependencies/IPlug/RTAudio/RtAudio.h:877 #16 0x000000010008c077 in iplug::IPlugAPPHost::CloseAudio() at /Users/oli/Dev/iPlug2/IPlug/APP/IPlugAPP_host.cpp:564 #17 0x000000010008bd00 in iplug::IPlugAPPHost::~IPlugAPPHost() at /Users/oli/Dev/iPlug2/IPlug/APP/IPlugAPP_host.cpp:39 #18 0x000000010008c1f5 in iplug::IPlugAPPHost::~IPlugAPPHost() at /Users/oli/Dev/iPlug2/IPlug/APP/IPlugAPP_host.cpp:36 #19 0x00000001000f02bb in std::__1::default_deleteiplug::IPlugAPPHost::operator()(iplug::IPlugAPPHost*) const at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/memory:2339 #20 0x00000001000f023f in std::__1::unique_ptr<iplug::IPlugAPPHost, std::1::default_deleteiplug::IPlugAPPHost >::reset(iplug::IPlugAPPHost*) at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/memory:2652 #21 0x00000001000ed827 in std::1::unique_ptr<iplug::IPlugAPPHost, std::1::default_deleteiplug::IPlugAPPHost >::operator=(std::nullptr_t) at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/memory:2610 #22 0x00000001000ecfe9 in iplug::IPlugAPPHost::MainDlgProc(HWND*, unsigned int, unsigned long, long) at /Users/oli/Dev/iPlug2/IPlug/APP/IPlugAPP_dialog.cpp:571 #23 0x000000010002be72 in SwellDialogDefaultWindowProc(HWND, unsigned int, unsigned long, long) at /Users/oli/Dev/iPlug2/WDL/swell/swell-dlg.mm:448 #24 0x0000000100028251 in ::-[Swell_vIPlugEffect_hwnd onSwellMessage:p1:p2:](UINT, WPARAM, LPARAM) at /Users/oli/Dev/iPlug2/WDL/swell/swell-dlg.mm:633 #25 0x0000000100072e01 in sendSwellMessage(objc_object, unsigned int, unsigned long, long) at /Users/oli/Dev/iPlug2/WDL/swell/swell-wnd.mm:55 #26 0x0000000100070ce5 in DestroyWindow(HWND*) at /Users/oli/Dev/iPlug2/WDL/swell/swell-wnd.mm:1637

[olilarkin]

seems to be something to do with my HDMI TV audio

[AlexHarker]

Looks like an audio thread hang