jimingham wrote:

I don't think there's a lot of reason to support registering lists of lldb 
commands for the event, just having a python callback should be enough.  I 
think it's better to just do a scripted callback, and then have some command 
that lets you add callbacks by module & class name, etc.

I do think that the callbacks from the hooks should pass back a "return control 
to the user?" boolean value - the way stop hooks do.  That would be convenient 
for "return control to me when this particular target, process, etc is 
created".  I would also like eventually to have the stop-hooks use this 
mechanism and it needs that feature.

The other thing I really don't like about the target stop-hook mechanism is 
that there's no general way to access the results of the hook.  For instance, 
if I have a stop hook that displays some values, once that's printed to the 
terminal, there's no way to look at that report again.  It would have been 
better if the stop hooks had a "result" type object the way the commands do, 
which it accumulates results to.  Then when the process stopped, by default the 
driver would gather and print this info (it would also mean we could control 
when it's printed better).  But you could still look it up later.  In the case 
of stop-hooks you'd probably flush this on continue.  Not sure what a good 
model for the other hooks is.

Jim

> On Oct 7, 2024, at 10:36 AM, jeffreytan81 ***@***.***> wrote:
> 
> 
> @jimingham <https://github.com/jimingham> , @clayborg 
> <https://github.com/clayborg>, do you guys prefer target stop-hook style 
> approach or SBNotificationCallback style python API callback?
> 
> @clayborg <https://github.com/clayborg>, for SBNotificationCallback, does 
> lldb::SBExecutionContext wrap the process, target or debugger object that is 
> creating/destroying?
> 
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https://github.com/llvm/llvm-project/pull/111206
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