Window freezes app
Window freezes app
- Subject: Window freezes app
- From: António Nunes <email@hidden>
- Date: Tue, 29 May 2007 11:14:50 +0200
Hi,
I'm a bit in a fix here:
In my latest builds I am getting a freeze (not always) when bringing
up a particular window, even though I have not made any changes to
either it's underlying code or to the window's nib file since the
last stable release of my software, where this problem did not exist.
I had a similar problem in these builds with a panel that hangs off
the document window and was able to fix this by recreating the nib
file from scratch. But this trick did not work for the other window
that exhibits this problem. So I'm in the dark as to what is going on
and how to fix it. This window is unrelated to the document windows
and is brought up in a non-modal fashion using "showWindow". I have
not been able to establish a surefire way to trigger the freeze, but
it happens often and seemingly more so when a document window is
still in the process of being opened when asking the problem window
to open too. The problem is that the threads in the app freeze,
apparently waiting for each other. If I pause the app after the
freeze I consistently get a readout similar to the one below:
Thread 1:
#0 0x9002c4c8 in semaphore_wait_signal_trap ()
#1 0x90030fac in pthread_cond_wait ()
#2 0x937ca12c in -[NSViewHierarchyLock lockForWriting] ()
#3 0x937dafe8 in -[NSView
_displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:] ()
#4 0x937d0348 in -[NSView displayIfNeeded] ()
#5 0x937d01b8 in -[NSWindow displayIfNeeded] ()
#6 0x937d0064 in _handleWindowNeedsDisplay ()
#7 0x907de76c in __CFRunLoopDoObservers ()
#8 0x907dea0c in __CFRunLoopRun ()
#9 0x907de4ac in CFRunLoopRunSpecific ()
#10 0x93296b20 in RunCurrentEventLoopInMode ()
#11 0x9329612c in ReceiveNextEventCommon ()
#12 0x93296020 in BlockUntilNextEventMatchingListInMode ()
#13 0x9379cae4 in _DPSNextEvent ()
#14 0x9379c7a8 in -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:] ()
#15 0x93798cec in -[NSApplication run] ()
#16 0x9388987c in NSApplicationMain ()
Thread 2:
#0 0x9002c4c8 in semaphore_wait_signal_trap ()
#1 0x90030fac in pthread_cond_wait ()
#2 0x937ca12c in -[NSViewHierarchyLock lockForWriting] ()
#3 0x937ee7b0 in GrowCacheWindow ()
#4 0x937ec218 in GetSharedSpaceFor ()
#5 0x937ebe60 in _NXAllocateImageCache ()
#6 0x937eba84 in -[NSCachedImageRep
_initWithSize:depth:separate:alpha:allowDeep:] ()
#7 0x937eb890 in -[NSImage lockFocus] ()
#8 0x9383017c in -[NSButtonCell drawInteriorWithFrame:inView:] ()
#9 0x9382e50c in -[NSButtonCell drawWithFrame:inView:] ()
#10 0x93806d88 in -[NSControl drawRect:] ()
#11 0x937e2858 in -[NSView _drawRect:clip:] ()
#12 0x9383a620 in -[NSView _lightWeightRecursiveDisplayInRect:] ()
#13 0x9383a720 in _lightWeightRecursiveDisplayInRect2 ()
#14 0x907ee3ec in CFArrayApplyFunction ()
#15 0x9383a668 in -[NSView _lightWeightRecursiveDisplayInRect:] ()
#16 0x9383a720 in _lightWeightRecursiveDisplayInRect2 ()
#17 0x907ee3ec in CFArrayApplyFunction ()
#18 0x9383a668 in -[NSView _lightWeightRecursiveDisplayInRect:] ()
#19 0x93839ebc in -[NSButtonCell(NSDefaultButtonIndicatorPrivate)
heartBeat:] ()
#20 0x93839ba8 in -[NSWindow(NSWindow_Theme) heartBeat:] ()
#21 0x938397d4 in -[NSUIHeartBeat _heartBeatThread:] ()
#22 0x92bdf1a0 in forkThreadForFunction ()
#23 0x9002be08 in _pthread_body ()
I have not been able yet to trigger the freeze with no document
window open. It only happens when a document window is open or
opening, and even then not always. It would be very helpful to be
offered some ideas on how to track down the exact cause of the
freeze, or ways of avoiding it.
Cheers,
António
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