URL:
<http://savannah.gnu.org/bugs/?30892>
Summary: Deadlock on performSelectorOnMainThread:
Project: GNUstep
Submitted by: jonathanosx
Submitted on: Fri 27 Aug 2010 09:16:39 PM GMT
Category: Backend
Severity: 3 - Normal
Item Group: Bug
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
_______________________________________________________
Details:
We are running into an occasional problem with our application on GNUstep
(Ubuntu 9.04) where we deadlock when attempting to call
performSelectorOnMainThread: The back trace with the locked threads is
attached. The only condition that I can see for this situation is that
somehow the outputFD of the pipe that is used to "trigger" the main run loop
to pick-up is blocked and can't be written to (GSRunLoopThreadInfo of
NSThread.m). I do notice that although NBLK_OPT is set for the inputFD, it
isn't set for outputFD which seems to be where the deadlock is occurring.
First, does anyone have an alternate (or clearer vision) of why this deadlock
condition is occuring?
Second, does anyone have a preferred solution other than to set the outputFD
to not-block?
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Fri 27 Aug 2010 09:16:39 PM GMT Name:
performSelectorOnMmainThreadDeadlock.txt Size: 4kB By: jonathanosx
Backtrace of Deadlock
<http://savannah.gnu.org/bugs/download.php?file_id=21326>
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?30892>
_______________________________________________
Message sent via/by Savannah
http://savannah.gnu.org/
_______________________________________________
Bug-gnustep mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/bug-gnustep
