NSProgressIndicator thread crash
NSProgressIndicator thread crash
- Subject: NSProgressIndicator thread crash
- From: Florent Pillet <email@hidden>
- Date: Thu, 24 Feb 2005 09:23:41 +0100
Today I got a report of a crash in one of my apps. Examining the crash
log the user sent reveals that this is the thread updating the progress
bar that crashed. In my app, I have a sheet that first uses a normal
progress bar, then switches the progress bar to infinite until the task
is complete and the sheet is removed.
I suspect the call to [NSApp endSheet:] may have removed the sheet
while the progress bar thread was still scheduled. I have added a
[progressBar setIndeterminate:NO] just before the endSheet: call, but I
wanted to have expert's advice about this crash.
Here is part of the crash log:
Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x0000004c
Thread 0:
0 libSystem.B.dylib 0x90016f48
semaphore_wait_signal_trap +
0x8
1 libSystem.B.dylib 0x9000e790 _pthread_cond_wait +
0x270
2 com.apple.AppKit 0x92dca8ec -[NSViewHierarchyLock
lockForWriting] + 0x194
3 com.apple.AppKit 0x92dd51d8 -[NSView
_displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:] +
0x114
4 com.apple.AppKit 0x92dee274 -[NSView
displayIfNeeded] +
0xa8
5 com.apple.AppKit 0x92dfef4c -[NSWindow
displayIfNeeded] +
0xb4
6 com.apple.AppKit 0x92ddf5ac
_handleWindowNeedsDisplay +
0xe0
7 com.apple.CoreFoundation 0x90191ca0 __CFRunLoopDoObservers
+ 0x194
8 com.apple.CoreFoundation 0x9019153c __CFRunLoopRun + 0x18c
9 com.apple.CoreFoundation 0x90195e8c CFRunLoopRunSpecific +
0x148
10 com.apple.HIToolbox 0x927d5f60
RunCurrentEventLoopInMode +
0xac
11 com.apple.HIToolbox 0x927dc6c8 ReceiveNextEventCommon
+ 0x17c
12 com.apple.HIToolbox 0x927fe6a0
BlockUntilNextEventMatchingListInMode + 0x60
13 com.apple.AppKit 0x92dd2e44 _DPSNextEvent + 0x180
14 com.apple.AppKit 0x92de98c8 -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:] + 0x74
15 com.apple.AppKit 0x92dfdc30 -[NSApplication run] +
0x21c
16 OmniAppKit 0x3b207950 -[OAApplication run] +
0x94
17 com.apple.AppKit 0x92eba2b8 NSApplicationMain +
0x1d0
18 SyncBuddy 0x0000aa08 0x1000 + 0x9a08
19 dyld 0x8fe1a558 _dyld_start + 0x64
Thread 2 Crashed:
0 com.apple.AppKit 0x92dc50c4 -[NSView
lockFocusIfCanDraw]
+ 0x2a4
1 com.apple.AppKit 0x92de9ea0 -[NSView lockFocus] +
0x28
2 com.apple.AppKit 0x92e21f68 -[NSUIHeartBeat
lockFocusForView:inRect:needsTranslation:] + 0x224
3 com.apple.AppKit 0x92de7954 -[NSProgressIndicator
heartBeat:] + 0x640
4 com.apple.AppKit 0x92dcaf2c -[NSUIHeartBeat
_heartBeatThread:] + 0x3d8
5 com.apple.Foundation 0x90a39b74 forkThreadForFunction
+ 0x6c
6 libSystem.B.dylib 0x900246e8 _pthread_body + 0x28
--
Florent Pillet http://www.florentpillet.com
Freelance software developer/consultant - Palm OS & Mac OS X
ICQ: 117292463 Skype: callto://florent.pillet
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