I traced the bug down to a small script, but can’t get it smaller than this: 
http://pastie.textmate.org/private/m21wkng3mgu7wvksbu4rq
According to the apple documentation [1] the Calendar Store framework is thread 
safe, but removing it removes the seg faults and bus errors I’m getting. It 
might just be Obj C calls from threads?

If this is a bug, I can file a ticket, but I might as well be doing something 
stupid here.

[1]: 
http://developer.apple.com/mac/library/documentation/AppleApplications/Reference/CalendarStoreReference/index.html


Jan


On May 15, 2010, at 21:24, Laurent Sansonetti wrote:

> Hi Jan,
> 
> Indeed this looks like a classic threading problem. I thought we eliminated 
> most of these in 0.6.
> 
> What does your #update method do specifically? Also, do the problems 
> disappear if you call #update only once from the main thread before starting 
> the thread?
> 
> A minor (but likely irrelevant here) note: I think your drawRect: method 
> might be called from the thread, which is AFAIK not supported in Cocoa. 
> 
> Laurent
> 
> On May 15, 2010, at 8:25 AM, Jan Kassens wrote:
> 
>> Hi,
>> 
>> I’m writing a small widget application rendering a couple of NSView 
>> subclasses which update periodically.
>> 
>> The widgets are subclasses of [1] and added as subviews to my main view, but 
>> the more I add the more likely are some random errors thrown on 
>> initialization.
>> The errors include a variety of failed assertions and seg faults (see [2] 
>> for examples) and don’t yield any helpful clues. I’m guessing that I’m 
>> dealing with something not thread-safe here.
>> 
>> Am I doing something wrong here? I’m doing all the drawing inside the 
>> drawRect(rect) method (or synchronously called methods) which I don’t call 
>> manually. “update” pulls data from various resources, but doesn’t draw.
>> 
>> 
>> [1] WidgetView class: 
>> http://pastie.textmate.org/private/hwfozrwudk2lcwzker20q
>> [2] Different Errors: http://pastie.textmate.org/private/vbp7iuw11ig26zxegzg
>> 
>> Jan
>> _______________________________________________
>> MacRuby-devel mailing list
>> MacRuby-devel@lists.macosforge.org
>> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
> 
> _______________________________________________
> MacRuby-devel mailing list
> MacRuby-devel@lists.macosforge.org
> http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel

_______________________________________________
MacRuby-devel mailing list
MacRuby-devel@lists.macosforge.org
http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel

Reply via email to