SoundPlayer VM Crash

>
> On Thu, 18 Feb 2010 12:12:44 -0300, Levente Uzonyi <[hidden email]> wrote:
>
>> On Thu, 18 Feb 2010, Martin wrote:
>>
>>> Hi All,
>>>
>>> We are experiencing a VM Crash in our production system. It happens after
>>> between 3-5hs since is running. It seems to be related to the SoundPlayer
>>> but it's used extensively through the system and we cannot track what
>>> happens. I attached the crash dump files where we found the errors. It
>>> seems to be related to the SoundPlayer
>>> class>startPlayerProcessBufferSize:rate:stereo:sound: method, have
>>> somebody experienced something similar?
>>
>> It seems like you forgot to attach the files.
>>
>>
>> Levente
>>
>>>
>>> Thanks in advance,
>>> Martin
>>>
>>
>
>
> --
> Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

> On Thu, 18 Feb 2010, Martin wrote:
>
>> ups! sorry, here they are...
>
> Are you forking the process which sends  
> #startPlayerProcessBufferSize:rate:stereo:sound: to SoundPlayer?
>
>
> Levente
>
>>
>> On Thu, 18 Feb 2010 12:12:44 -0300, Levente Uzonyi <[hidden email]>  
>> wrote:
>>
>>> On Thu, 18 Feb 2010, Martin wrote:
>>>
>>>> Hi All,
>>>>  We are experiencing a VM Crash in our production system. It happens  
>>>> after between 3-5hs since is running. It seems to be related to the  
>>>> SoundPlayer but it's used extensively through the system and we  
>>>> cannot track what happens. I attached the crash dump files where we  
>>>> found the errors. It seems to be related to the SoundPlayer  
>>>> class>startPlayerProcessBufferSize:rate:stereo:sound: method, have  
>>>> somebody experienced something similar?
>>>  It seems like you forgot to attach the files.
>>>   Levente
>>>
>>>>  Thanks in advance,
>>>> Martin
>>>>
>>>
>>
>>
>> -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
>

>
> Martin
>
> On Thu, 18 Feb 2010 12:35:03 -0300, Levente Uzonyi <[hidden email]> wrote:
>
>> On Thu, 18 Feb 2010, Martin wrote:
>>
>>> ups! sorry, here they are...
>>
>> Are you forking the process which sends
>> #startPlayerProcessBufferSize:rate:stereo:sound: to SoundPlayer?
>>
>>
>> Levente
>>
>>>
>>> On Thu, 18 Feb 2010 12:12:44 -0300, Levente Uzonyi <[hidden email]> wrote:
>>>
>>>> On Thu, 18 Feb 2010, Martin wrote:
>>>>
>>>>> Hi All,
>>>>> We are experiencing a VM Crash in our production system. It happens
>>>>> after between 3-5hs since is running. It seems to be related to the
>>>>> SoundPlayer but it's used extensively through the system and we cannot
>>>>> track what happens. I attached the crash dump files where we found the
>>>>> errors. It seems to be related to the SoundPlayer
>>>>> class>startPlayerProcessBufferSize:rate:stereo:sound: method, have
>>>>> somebody experienced something similar?
>>>> It seems like you forgot to attach the files.
>>>>  Levente
>>>>
>>>>> Thanks in advance,
>>>>> Martin
>>>>>
>>>>
>>>
>>>
>>> -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
>>
>
>
> --
> Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
>

> On Thu, 18 Feb 2010, Martin wrote:
>
>> Yes, it's forked.
>
> You shouldn't. There should only be one sound player process at a time.  
> If you call this method concurrently, there's a slight chance that two  
> or more processes will exists at the same time which will lead to a  
> crash.
> Why are you forking this process?
>
>
> Levente
>
>>
>> Martin
>>
>> On Thu, 18 Feb 2010 12:35:03 -0300, Levente Uzonyi <[hidden email]>  
>> wrote:
>>
>>> On Thu, 18 Feb 2010, Martin wrote:
>>>
>>>> ups! sorry, here they are...
>>>  Are you forking the process which sends  
>>> #startPlayerProcessBufferSize:rate:stereo:sound: to SoundPlayer?
>>>   Levente
>>>
>>>>  On Thu, 18 Feb 2010 12:12:44 -0300, Levente Uzonyi <[hidden email]>  
>>>> wrote:
>>>>
>>>>> On Thu, 18 Feb 2010, Martin wrote:
>>>>>
>>>>>> Hi All,
>>>>>> We are experiencing a VM Crash in our production system. It happens  
>>>>>> after between 3-5hs since is running. It seems to be related to the  
>>>>>> SoundPlayer but it's used extensively through the system and we  
>>>>>> cannot track what happens. I attached the crash dump files where we  
>>>>>> found the errors. It seems to be related to the SoundPlayer  
>>>>>> class>startPlayerProcessBufferSize:rate:stereo:sound: method, have  
>>>>>> somebody experienced something similar?
>>>>> It seems like you forgot to attach the files.
>>>>>  Levente
>>>>>
>>>>>> Thanks in advance,
>>>>>> Martin
>>>>>>
>>>>>
>>>>   -- Using Opera's revolutionary e-mail client:  
>>>> http://www.opera.com/mail/
>>>
>>
>>
>> -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
>>
>

> Martin wrote:
>> We are experiencing a VM Crash in our production system. It happens  
>> after between 3-5hs since is running. It seems to be related to the  
>> SoundPlayer but it's used extensively through the system and we cannot  
>> track what happens. I attached the crash dump files where we found the  
>> errors. It seems to be related to the SoundPlayer  
>> class>startPlayerProcessBufferSize:rate:stereo:sound: method, have  
>> somebody experienced something similar?
>
> It looks like it's crashing somewhere in the sound player's play loop,  
> and fairly reliably so. If you can repeat the problem, could you try the  
> following:
> - Launch your application
> - Press F2 to get to the VM preferences
> - Go to "Display and Sound" and toggle the Direct Sound preference
> This will take a slightly different path in the VM. If this crashes as  
> well, please send me the crash.dmp. If it doesn't crash you can use that  
> as a workaround; the problem is then likely in the low-level interface  
> to DSound.
>
> BTW, one other thing you might try that might be helpful is to change  
> SoundPlayer class>>startPlayerProcessBufferSize:rate:stereo:sound: to  
> give the player process highIOPriority. The default player priority is  
> too low if you have other preemptive activities related to sound.
>
> Cheers,
>    - Andreas
>
>