Yes, the exception occurs when the UI attempts to fault in an object for
display. (The display code coalesces updates, which is why the stack trace
starts with __NSFireDelayedPerform ).
On 2010-03-15, at 11:03 PM, Ben Trumbull wrote:
>
> You should generally get an NSError with the code that is
> NSFileReadCorruptFileError. In gdb, what does:
>
> >future-break objc_exception_throw
> >future-break +[NSError errorWithDomain:code:userInfo:]
>
> ...
>
> >info threads
> >thread apply all bt
>
> say ?
(gdb) info threads
4 port# 0x8b3b 0x00007fff8064d9da in __workq_kernreturn ()
2 port# 0x1703 0x00007fff8064cbba in kevent ()
* 1 port# 0xa0f 0x00007fff80a7a0da in objc_exception_throw ()
(gdb) thread apply all bt
Thread 4 (process 705):
#0 0x00007fff8064d9da in __workq_kernreturn ()
#1 0x00007fff8064ddec in _pthread_wqthread ()
#2 0x00007fff8064da55 in start_wqthread ()
Thread 2 (process 705):
#0 0x00007fff8064cbba in kevent ()
#1 0x00007fff8064ea85 in _dispatch_mgr_invoke ()
#2 0x00007fff8064e75c in _dispatch_queue_invoke ()
#3 0x00007fff8064e286 in _dispatch_worker_thread2 ()
#4 0x00007fff8064dbb8 in _pthread_wqthread ()
#5 0x00007fff8064da55 in start_wqthread ()
Thread 1 (process 705):
#0 0x00007fff80a7a0da in objc_exception_throw ()
#1 0x00007fff8088882c in _execute ()
#2 0x00007fff80888126 in -[NSSQLiteConnection execute] ()
#3 0x00007fff808a5eda in -[NSSQLChannel selectRowsWithCachedStatement:] ()
#4 0x00007fff8089780d in -[NSSQLCore
_newRowsForFetchPlan:selectedBy:withArgument:] ()
#5 0x00007fff8088fd2b in -[NSSQLCore newRowsForFetchPlan:] ()
#6 0x00007fff808b23c7 in -[NSSQLCore
newFetchedPKsForSourceID:andRelationship:] ()
#7 0x00007fff808b1f2d in -[NSSQLCore
retainedRelationshipDataWithSourceID:forRelationship:withContext:] ()
#8 0x00007fff808b1b67 in -[NSFaultHandler
retainedFulfillAggregateFaultForObject:andRelationship:withContext:] ()
#9 0x00007fff808b16cc in -[_NSFaultingMutableSet willRead] ()
#10 0x00007fff8091a82b in -[_NSFaultingMutableSet objectEnumerator] ()
#11 0x000000010001a831 in -[BarGraph updateValues] (self=0x102678660,
_cmd=0x100078359) at /Users/davef/Documents/♣
HCT/Projects/SpeechClinic/Source/BarGraph.m:380
#12 0x000000010001a36c in -[BarGraph updateState] (self=0x102678660,
_cmd=0x100078366) at /Users/davef/Documents/♣
HCT/Projects/SpeechClinic/Source/BarGraph.m:321
#13 0x000000010001ae5c in -[BarGraph draw] (self=0x102678660,
_cmd=0x7fff863f60d0) at /Users/davef/Documents/♣
HCT/Projects/SpeechClinic/Source/BarGraph.m:443
#14 0x000000010006de60 in -[ChartImage renderForCellSize:] (self=0x102679ae0,
_cmd=0x100079c5d, cellSize={width = 100, height = 100}) at
/Users/davef/Documents/♣ HCT/Projects/SpeechClinic/Source/ChartImage.m:65
#15 0x000000010006b4fe in -[ChartBrowserController updateViews]
(self=0x102677050, _cmd=0x100081138) at /Users/davef/Documents/♣
HCT/Projects/SpeechClinic/Source/ChartBrowserController.m:267
#16 0x00007fff81c64434 in __NSFireDelayedPerform ()
#17 0x00007fff8453ca58 in __CFRunLoopRun ()
#18 0x00007fff8453ac2f in CFRunLoopRunSpecific ()
#19 0x00007fff81eeca4e in RunCurrentEventLoopInMode ()
#20 0x00007fff81eec7b1 in ReceiveNextEventCommon ()
#21 0x00007fff81eec70c in BlockUntilNextEventMatchingListInMode ()
#22 0x00007fff85cff1f2 in _DPSNextEvent ()
#23 0x00007fff85cfeb41 in -[NSApplication
nextEventMatchingMask:untilDate:inMode:dequeue:] ()
#24 0x00007fff85cc4747 in -[NSApplication run] ()
#25 0x00007fff85cbd468 in NSApplicationMain ()
#26 0x0000000100003d36 in main (argc=1, argv=0x7fff5fbff668) at
/Users/davef/Documents/♣ HCT/Projects/SpeechClinic/Source/main.m:25
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