Re: XCode debugger locking up
Re: XCode debugger locking up
- Subject: Re: XCode debugger locking up
- From: Nick Nallick <email@hidden>
- Date: Wed, 2 Mar 2005 11:44:34 -0700
I've been having this problem for some time, but the last couple days
it's become particularly annoying.
Sometimes (usually just when I'm about to find whatever problem I'm
looking for), when stopping at a breakpoint, stepping, moving around
in the stack frame, or doing some other debugger operation that would
cause the display to update, XCode hangs with a spinning rainbow
cursor. During the hang, XCode uses 100% CPU for an inordinate amount
of time (the most recent case was around 8 minutes).
Just before XCode hangs, the status display in the debug window
changes to:
"Timed out fetching variable data. Variable display may be
inaccurate."
and eventually (after several minutes) changes to:
"Error from Debugger: Exception Name: NSInvalidArgumentException,
reason:*** -[NSCFArray addObject:]: attempt to insert nil"
I've recently become involved with a large Xcode based Carbon project
in the debugging and performance tuning stage. The executable file is
about 40MB but I'm not sure if that includes debugging symbols in Xcode
or not. I evaluated Xcode 1.0 and decided it wasn't quite ready for
prime time so I haven't used Xcode for anything large before. I looked
at this as my chance to spend some quality time with Xcode 1.5 and
perhaps 2.0.
I've been trying to use the 1.5 debugger on 10.3.8 to learn the code by
setting break points, crawling the stack and stepping through the code.
This has been extremely painful. I've been having similar problems to
those detailed above almost constantly. The only real difference is
that mine only spends a minute or two with the spinning cursor, but
when it comes back about the only thing I can do is terminate the app
I'm debugging. For me the debugger is virtually useless.
Perhaps the problem is related to the lack of available memory. I'm
running a PM 2.5 DP with 1GB RAM. I was down to about 1.35 GB free on
my boot partition. After getting my free disk space up to about 4 GB
the problem has lessened somewhat but not very much. Now I can single
step three or four lines after a breakpoint before freezing.
Does anyone have suggestions about the system memory requirements for
debugging large projects?
I hate to rant, but this is my first attempt to use Xcode for a
substantial project and I have to say I'm disappointed. In general it
still seems to be rather lacking in polish (e.g., resizing panes in the
project find window). Is it just me or is this still beta quality
software? I'd really love to see world class tools for Macintosh
development but that's not my experience with Xcode yet.
Nick Nallick
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