Re: need way to debug tool called by popen--at startup
Re: need way to debug tool called by popen--at startup
- Subject: Re: need way to debug tool called by popen--at startup
- From: Jim Ingham <email@hidden>
- Date: Thu, 30 Apr 2009 10:45:27 -0700
follow-fork doesn't work on Mac OS X.
But as long as your machine isn't too heavily loaded, --waitfor will
stop you very early in the dyld loading process, so you can catch most
startup bugs this way.
Jim
On Apr 30, 2009, at 10:17 AM, Alastair Houghton wrote:
On 30 Apr 2009, at 18:08, Jonas Maebe wrote:
On 30 Apr 2009, at 18:35, Dennis Christopher wrote:
The problem I have is I want to debug an exception that occurs near
to the startup of the tool, and by the time I go through the
Attach step back in XCode the tool
is already past that point. Perhaps there is a way with gdb to do
this...? any suggestions would be
appreciated.
gdb -waitfor <processname>
(note that this works via some polling method)
Alternatively, you can add a sleep(10) or however long you need at
the beginning of the command line tool, so that you do get enough
time to attach gdb manually.
If it works on Mac OS X (and I have no idea if it does), you might
also be able to use GDB's follow-fork-mode for this purpose.
Probably not a good idea from the Xcode debugger though, as if it
does work it's liable to confuse Xcode (i.e. run GDB in Terminal
instead).
Kind regards,
Alastair.
--
http://alastairs-place.net
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