• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: AudioUnitSetProperty deadlock?
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: AudioUnitSetProperty deadlock?


  • Subject: Re: AudioUnitSetProperty deadlock?
  • From: Doug Wyatt <email@hidden>
  • Date: Tue, 19 Apr 2005 10:31:02 -0700

On Apr 19, 2005, at 9:46, Dominic Feira wrote:
Hello.

I have managed to create a deadlock in my Core Audio code. Basically, I have an audio input thread that writes data to a ring buffer which is then read from by another thread that does some conversions on that data.

I have a notification set up on the device that I'm getting input from to let me know when the sample rate changes. This works fine. I then try to modify the other side of the ring buffer to let it know that the data is now in a different sample rate.

AudioUnitSetProperty(converterUnit,
                    kAudioUnitProperty_StreamFormat,
                    kAudioUnitScope_Input,
                        0,
                    &desc,
                    sizeof(AudioStreamBasicDescription));

This call never returns. Anybody know why?

If you could take a sample of the process (e.g. sample <pid> 5), that would show what's going on in all the threads -- if it's a deadlock, the sample would provide hints if not an absolute indication of where the deadlock is.


Doug

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden


References: 
 >AudioUnitSetProperty deadlock? (From: Dominic Feira <email@hidden>)

  • Prev by Date: AudioUnitSetProperty deadlock?
  • Next by Date: Re: thread-safe FIFO queue
  • Previous by thread: AudioUnitSetProperty deadlock?
  • Next by thread: [OT] Feeder threads
  • Index(es):
    • Date
    • Thread