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Re: Debugging / Logging from AudioServerPlugIn

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Re: Debugging / Logging from AudioServerPlugIn

Subject: Re: Debugging / Logging from AudioServerPlugIn
From: Frederic De Jaeger <email@hidden>
Date: Wed, 06 May 2015 09:39:23 +0200

Hi,

Personaly, I'm logging to /Library/Preferences/Audio/mylogfile.

This is one of the few area you have access to from the sandboxed coreaudiod.

About the breakpoints, I followed this

https://groups.google.com/d/msg/coreaudio-api/PDQ3V5NrGI0/RvsgjFHqqcwJ

and it worked (I did not try since I upgraded to 10.10 and the latest xcode, so make a prayer)

Fred

2015-04-24 2:04 GMT+02:00 Seth Willits <email@hidden>:

Two things:

1) I can manage to get the debugger to attach to coreaudiod, but it never stops on any breakpoints.

I've read the past mailing list threads on debugging, for example
https://groups.google.com/d/msg/coreaudio-api/g5TrSW4hJFw/W6S8SZu7NE0J

The debugger attaches as root when coreaudiod fires up, and I can pause the debugger and see the threads etc, but it never breaks on the breakpoints I have set in any of the functions in the AudioServerPlugIn which I know are being called. For example NullAudio_Create and NullAudio_QueryInterface in the Apple sample project.

2) I can't get any messages to show up in the system log. I've tried syslog and asl_log_message at variously increasingly critical log levels, and none of the messages show up in Console despite knowing that these functions are getting called.

Between the two of these problems, I can't even begin to debug anything. Suggestions?

--
Seth Willits

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