Re: [Boa Constr] Multithreaded debugging

[Riaan B. <riaan@e.co.za>]

Hi Raefer,

Raefer Gabriel wrote:

>I recently picked up Boa Constructor, which I tried out perhaps 2 years ago
>when I was last using wxPython.  I'm very impressed with the progress, this
>development environment is coming along very nicely.
>
>My one problem right now is the debugger - it's great, but like most of the
>Python IDEs I've seen, only supports debugging single-threaded apps (or
>rather, breakpoints aren't hit by the execution path of other threads).
>  
>

It does support debugging threads.

>I was trying to find some way to debug a multithreaded app and discovered
>this post (http://sourceforge.net/mailarchive/message.php?msg_id=1423854)
>which seems to indicate a workaround that's used with Zope and I discovered
>works with any multithreaded application - as long as the relevant thread of
>execution hits a hard sys.breakpoint() call at some point, it seems that it
>will hit regular breakpoints thereafter, though it seems this essentially
>"switches" the thread that's being debugged, and it's not clear whether you
>can reliably "switch back" to the original thread (with another call to
>sys.breakpoint() perhaps?).
>  
>

Indeed, sys.breakpoint() was added primarily to support debugging 
threads, and yes you can
reliably switch back to the main thread by hitting another sys.breakpoint().

Cheers,
Riaan.