Re: [Qemu-devel] [PULL for-2.9 1/3] coroutine: remove GThread implementation

[Stefan Hajnoczi]

On Fri, May 12, 2017 at 03:19:18PM -0500, Eric Blake wrote:
> On 05/12/2017 09:37 AM, Stefan Hajnoczi wrote:
> > From: "Daniel P. Berrange" <address@hidden>
> > 
> > The GThread implementation is not functional enough to actually
> > run QEMU reliably. While it was potentially useful for debugging,
> > we have a scripts/qemugdb/coroutine.py to enable tracing of
> > ucontext coroutines in GDB, so that removes the only reason for
> > GThread to exist.
> > 
> 
> Quick question (unrelated to the pull request): Can we get a patch to
> scripts/qemugdb/coroutine.py or nearby that mentions the preferred way
> to actually use the script?  I didn't know the script existed before
> seeing this commit message, and was sad to see that it was not
> self-documenting (or else a scripts/qemugdb/README file) on how best to
> utilize the script (is it as simple as running 'gdb --some-arg
> /path/to/coroutine.py'? do you have to install some magic file to tell
> gdb to autoload the file any time you are debugging qemu? something
> else???).
> 
> Okay, I searched a bit harder, and found that scripts/qemu-gdb.py loads
> these subscripts, if you type 'source scripts/qemu-gdb.py' at the (gdb)
> prompt.  Still, is there a way to automate that so that the scripts are
> loaded every time you fire up gdb, instead of having to remember to do
> it by hand? And if so, can that be documented?

I'll send a patch to add a .gdbinit file.

Stefan

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