27 Jul
2017
27 Jul
'17
9:58 p.m.
I am getting this error "Jack Error: zombified - calling shutdown
handler" with default timeout of 500ms. Increasing timeout to 4000ms
helps, but it isn't clear why 500ms isn't sufficient.
Jack thread only connects with the actual client code through the
process() callback. I timed process(), it never takes longer than 5ms.
Given that the system has very low CPU load, why does the process become
zombified? And why other apps, like Ardour, don't suffer from this?
Client: newly written Jack backend for qTox.
jack-0.125.0 on FreeBSD 11.
Yuri
28 Jul
28 Jul
12:43 a.m.
Am 28.07.2017 um 04:58 schrieb Yuri:
Jack thread only connects with the actual client code
through the
process() callback.
You need at least connect a shutdown callback
void
jack_shutdown (void *arg)
{
// clean up your client
exit (1);
}
/* tell the JACK server to call `jack_shutdown()' if
it ever shuts down, either entirely, or if it
just decides to stop calling us.
*/
jack_on_shutdown (client, jack_shutdown, 0);
1:10 a.m.
On 07/27/2017 22:43, Hermann Meyer wrote:
I do have shutdown callback. Instead of exit(1), I schedule a timer
event and connect again.
The major problem is why does the process get zombified in the first place.
Yuri
Jack thread
only connects with the actual client code through the
process() callback.
You need at least connect a shutdown callback
void
jack_shutdown (void *arg)
{
// clean up your client
exit (1);
}
1:27 a.m.
Am 28.07.2017 um 08:10 schrieb Yuri:
On 07/27/2017 22:43, Hermann Meyer wrote:
I do have shutdown callback. Instead of exit(1), I schedule a timer
event and connect again.
The major problem is why does the process get zombified in the first
place.
Yuri
Not unlikely a error in your code, but, without seeing it, hard to say. ;-)
Maybe, for example you refer somewhere to your jack_client_t* pointer
after shutdown, which isn't valid any more then, . . .
Jack
thread only connects with the actual client code through the
process() callback.
You need at least connect a shutdown callback
void
jack_shutdown (void *arg)
{
// clean up your client
exit (1);
}
1:31 a.m.
On 07/27/2017 23:27, Hermann Meyer wrote:
Not unlikely a error in your code, but, without seeing it, hard to
say. ;-)
Maybe, for example you refer somewhere to your jack_client_t* pointer
after shutdown, which isn't valid any more then, . . .
But I am talking about the zombification problem that happens before
shutdown.
Yuri
2704
days inactive
2704
days old
jackaudio@lists.linuxaudio.org
4 comments
2 participants
participants (2)
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Hermann Meyer -
Yuri