Re: [Protux-devel] <RT> segfaults...

[Luciano Giordana]

I think I know what is happening for both problems 1 and 2

I changed the way the tracks are set as recordable when I implemented the bus 
routing, but I believe
there is something bad about the unsetting them as recordable. The bus should 
be set available, and
it seems it is still allocated for previous recording...

working on it... thanks for the great report.




On Saturday 28 December 2002 05:34 pm, Martin Herren wrote:
> Hej,
>
> a bug report about 2 segfaults when setting/unsetting a track recordable
> (<RT>).
>
> 1) This crash is reproductible on my system and happens as follow: i start
> protux with the --d1 option, i press <RT>, after a few seconds i press
> again <RT> (without having recorded anything in between). Then again after
> a few seconds i press <RT> again, then protux hangs a few seconds before
> leaving with a 'WARNING: Buffer Underrun' and a segfault. Here is the debug
> output with comments when i did what (i stripped the parts i tought that
> weren't relevant).
>
> ENTERING MustuxApplication (CONSTRUCTOR)
> LEAVING  MustuxApplication (CONSTRUCTOR)
> ENTERING Protux (CONSTRUCTOR)
>     ENTERING GlobalProperties.cc::init
>
> <... snip ...>
>
>     LEAVING  GlobalProperties.cc::init
>     ENTERING MustuxAudioDeviceMapper.cc::init
>         [ Found Alsa Device #0  device=plughw:0,0 ]
>         [ Checking BUS 0 ... ]
>         ENTERING MustuxAudioDeviceMapper.cc::open_device
>             [ ALSA DEV #0 Sucessfully open : device=plughw:0,0 MODE=PLAY
> RATE= 44100  CHANNELS=2 BITDEPTH=16 FPS=20 fragmentSizeInBlocks=2205 
> fragmentSize=8820 ] LEAVING  MustuxAudioDeviceMapper.cc::open_device
>         ENTERING MustuxAudioDeviceMapper.cc::close_device
>             [ Sucessfully closed ALSA DEV=plughw:0,0 ]
>         LEAVING  MustuxAudioDeviceMapper.cc::close_device
>         ENTERING Protux.cc::check_dirs
>         LEAVING  Protux.cc::check_dirs
>         ENTERING MustuxInterface (CONSTRUCTOR)
>             ENTERING MustuxJogMouseBoard (CONSTRUCTOR)
>             LEAVING  MustuxJogMouseBoard (CONSTRUCTOR)
>         LEAVING  MustuxInterface (CONSTRUCTOR)
>         ENTERING Interface (CONSTRUCTOR)
>
> <... snip ...>
>
>         LEAVING  Interface (CONSTRUCTOR)
>     LEAVING  Protux (CONSTRUCTOR)
>
> <--- here I press <RT> --->
>
>     [ Processing Action 34 ( SET TRACK RECORDABLE ) ]
> DEBUG : Track.cc::toggle_record : captureDir =
> /home/martin/protuxprojects/Untitled/song_2/capture ENTERING
> Recorder.cc::arm
>         ENTERING MustuxAudioDeviceMapper.cc::open_device
>             [ ALSA DEV #0 Sucessfully open : device=plughw:0,0 MODE=REC
> RATE= 44100  CHANNELS=2 BITDEPTH=16 FPS=20 fragmentSizeInBlocks=4096 
> fragmentSize=16384 ] LEAVING  MustuxAudioDeviceMapper.cc::open_device
> DEBUG : Recorder.cc::arm : Detected fragment size for REC :
> recBufferSize=16384 ENTERING Audio.cc::create
> DEBUG : Audio.cc::create : Creating audio : 2 channels,
> DEBUG : Audio.cc::create : 44100 Hz, 16 bits
> DEBUG : Audio.cc::create : Project : Untitled
> DEBUG : Audio.cc::create : Group : UndefGroup
> DEBUG : Audio.cc::create : Hardware : UndefSoundCard
> DEBUG : Audio.cc::create : Desc : Real Time Take
>             ENTERING PrafFile (CONSTRUCTOR)
>             LEAVING  PrafFile (CONSTRUCTOR)
>             ENTERING PrafFile.cc::create
>             LEAVING  PrafFile.cc::create
>             ENTERING PrafFile.cc::write_header
>             LEAVING  PrafFile.cc::write_header
>         LEAVING  Audio.cc::create
>     LEAVING  Recorder.cc::arm
> --> Reached mark -------------- STARTING  THREAD : ThRecLoop --------------
>     [ Reading 4096 blocks ( 16384 bytes) ]
>     [ Reading 4096 blocks ( 16384 bytes) ]
>
> <... snip ...>
>
>     [ Reading 4096 blocks ( 16384 bytes) ]
>
> <--- here i presse <RT> for the second time --->
>
>     [ Processing Action 34 ( SET TRACK RECORDABLE ) ]
>     ENTERING Recorder.cc::stop
>         ENTERING MustuxAudioDeviceMapper.cc::close_device
>             [ Sucessfully closed ALSA DEV=plughw:0,0 ]
>         LEAVING  MustuxAudioDeviceMapper.cc::close_device
> DEBUG : Recorder.cc::stop : Aborting recording ...
>     LEAVING  Recorder.cc::stop
>
> <--- here i press <RT> for the third time --->
>
>     [ Processing Action 34 ( SET TRACK RECORDABLE ) ]
> DEBUG : Track.cc::toggle_record : captureDir =
> /home/martin/protuxprojects/Untitled/song_2/capture ENTERING
> Recorder.cc::arm
>         ENTERING MustuxAudioDeviceMapper.cc::open_device
> WARNING: Buffer Underrun !
>
> <--- there it segfaults --->
>
>
>
>
>
>
>
>
> 2) Second reproductible (but it has happend that it didn't crash here)
> situation: i press <RT>, then <R>, after a few seconds again <R> and then
> <RT>, and then i got also a segfault (but without a buffer underrun
> warning). Here again the most relevant parts of the --d1 output:
>
> <--- i press <RT> here --->
>
>     [ Processing Action 34 ( SET TRACK RECORDABLE ) ]
> DEBUG : Track.cc::toggle_record : captureDir =
> /home/martin/protuxprojects/Untitled/song_2/capture ENTERING
> Recorder.cc::arm
>         ENTERING MustuxAudioDeviceMapper.cc::open_device
>             [ ALSA DEV #0 Sucessfully open : device=plughw:0,0 MODE=REC
> RATE= 44100  CHANNELS=2 BITDEPTH=16 FPS=20 fragmentSizeInBlocks=4096 
> fragmentSize=16384 ] LEAVING  MustuxAudioDeviceMapper.cc::open_device
> DEBUG : Recorder.cc::arm : Detected fragment size for REC :
> recBufferSize=16384 ENTERING Audio.cc::create
> DEBUG : Audio.cc::create : Creating audio : 2 channels,
> DEBUG : Audio.cc::create : 44100 Hz, 16 bits
> DEBUG : Audio.cc::create : Project : Untitled
> DEBUG : Audio.cc::create : Group : UndefGroup
> DEBUG : Audio.cc::create : Hardware : UndefSoundCard
> DEBUG : Audio.cc::create : Desc : Real Time Take
>             ENTERING PrafFile (CONSTRUCTOR)
>             LEAVING  PrafFile (CONSTRUCTOR)
>             ENTERING PrafFile.cc::create
>             LEAVING  PrafFile.cc::create
>             ENTERING PrafFile.cc::write_header
>             LEAVING  PrafFile.cc::write_header
>         LEAVING  Audio.cc::create
>     LEAVING  Recorder.cc::arm
> --> Reached mark -------------- STARTING  THREAD : ThRecLoop --------------
>     [ Reading 4096 blocks ( 16384 bytes) ]
>
> <... snip ...>
>
>     [ Reading 4096 blocks ( 16384 bytes) ]
>
> <--- here i press <R> --->
>
>     [ Processing Action 33 ( RECORD ) ]
>     ENTERING Recorder.cc::rec
>     LEAVING  Recorder.cc::rec
>     [ Reading 4096 blocks ( 16384 bytes) ]
>
> <... snip ...>
>
>     [ Reading 4096 blocks ( 16384 bytes) ]
>
> <--- here i press <R> again --->
>
>     [ Processing Action 33 ( RECORD ) ]
>     ENTERING Recorder.cc::force_stop
> --> Reached mark -------------- FINISHING THREAD : ThRecLoop --------------
>         ENTERING Recorder.cc::stop
>             ENTERING MustuxAudioDeviceMapper.cc::close_device
>                 [ Sucessfully closed ALSA DEV=plughw:0,0 ]
>             LEAVING  MustuxAudioDeviceMapper.cc::close_device
>             ENTERING Audio.cc::fix_size
>                 [ Fixing Praf Size ]
>                 ENTERING PrafFile.cc::fix_audio_size
>                     [ Fixing audio size to 524288 ]
>                 LEAVING  PrafFile.cc::fix_audio_size
>             LEAVING  Audio.cc::fix_size
>             ENTERING Audio.cc::rebuild_peaks
>                 ENTERING Peak (CONSTRUCTOR)
>                 LEAVING  Peak (CONSTRUCTOR)
>                 ENTERING Peak.cc::build
>                     [ Created RAM buffer for HZOOM = 9 of 8194 shorts  ]
>                     [ Created RAM buffer for HZOOM = 10 of 5462 shorts ]
>
> <... snip ...>
>
>                     [ Created RAM buffer for HZOOM = 30 of 10 shorts  ]
>                     [ Created RAM buffer for HZOOM = 31 of 6 shorts  ]
>                     ENTERING Peak.cc::load
>                         [ Looking for peak image file
> /home/martin/protuxprojects/Untitled/song_2/capture/take-20021228-181758.pr
>af.peak ] LEAVING  Peak.cc::load
>                     [ No previously saved peak image found. Rescanning
> file... ] [ Rescanning Peaks : Completed. ]
>                     ENTERING Peak.cc::save
>                         [ Saving Peak to
> /home/martin/protuxprojects/Untitled/song_2/capture/take-20021228-181758.pr
>af.peak ] [ RAM Buffers saved. Total size of file is 62848 ] LEAVING 
> Peak.cc::save
>                 LEAVING  Peak.cc::build
>             LEAVING  Audio.cc::rebuild_peaks
>             ENTERING Song.cc::create_clip
>                 ENTERING Track.cc::add_clip
>                     [ Creating clip starting in 0 ]
>                     ENTERING Track.cc::add_clip
>                         ENTERING AudioClip (CONSTRUCTOR)
>                         LEAVING  AudioClip (CONSTRUCTOR)
>                         [ Adding first clip :  [ TFB = 0 , TLB = 131072 ,
> SFB = 0 , SLB = 131072 , LEN = 131072 ] ] [ Entire clip list now is  ]
>                         [ Clip #0 : SFB=0 , SLB=131072 , TRB=0 ]
>                     LEAVING  Track.cc::add_clip
>                 LEAVING  Track.cc::add_clip
>             LEAVING  Song.cc::create_clip
>         LEAVING  Recorder.cc::stop
>     LEAVING  Recorder.cc::force_stop
>
> <--- here i press <RT> again --->
>
>     [ Processing Action 34 ( SET TRACK RECORDABLE ) ]
>     ENTERING Recorder.cc::stop
>         ENTERING MustuxAudioDeviceMapper.cc::close_device
>
> <--- there it segfaults --->
>
> I can play back the track before unsetting in recordable, so i know the
> recording went well, but it still crashes when i try to unset the track
> recordable afterwards...
>
>
> It seems as there is a problem with
> MustuxAudioDeviceMapper.cc::open/close_device... if the problem is not in
> alsa itself...
>
> hope this debug output will be of some help...
>
> Martin

-- 
Luciano Giordana - Musician - Certified Java/GNU C++ Developer - Free Software 
Evangelist
http://www.groselhalight.com/giordana
Project Protux : Free Professional Audio Tools for GNU/Linux
http://www.freesoftware.fsf.org/protux
-- Once Palladium is up and running , I will become a hacker --