[X4U] ICAL looping

Daly Jessup jessup at san.rr.com
Tue Apr 22 21:25:28 PDT 2008


I wrote:

>>Okay, so did you  mean that it was "frozen"?  I wondered if you 
>>meant that some command or activity was running then repeating. But 
>>you mean, perhaps, that it was "frozen" (unresponsive) and you 
>>assumed it was because some process was looping?  (and I imagine 
>>that probably was why - I haven't seen a verified explanation of 
>>why we get SPOD. Is that what you had? A spinning colored ball when 
>>you selected iCal?

Ed Gould wrote:

>Frozen in *MY* context means waiting for a resource that will never 
>be available. i.e. waiting on an read (or write) to a disk that was 
>powered off (as an example). Yes I did get a spinning beach ball as 
>you call it but to me that just means the application is not 
>responding (for what ever reason). I was able to Force quit ICAL. 
>There could be many different reasons for a spinning beachball 
>(AFAIK) only Apple can tell you all the reasons. I would think you 
>would have to know quite a bit of how interrupts are handle by the 
>OS to even begin to guess what causes them. That, plus how 
>dispatching is done by the OS.  I know that Apples is simple 
>(compared to others) but not well documented (on purpose?). Other 
>OS's (that I am familiar with) have clear concise documentation on 
>dispatching and interrupts and "other" events that change the state 
>of the OS. I guess that comes with maturity of the OS (in this 
>context over 10 years) as people need to know (sometimes) that type 
>of detail.

Well, whatever.  When you said "looping" you meant it was unavailable 
and unresonsive. Did you resolve that, or is it still a situation for 
you?

Daly
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