[lldb-dev] Stepping in a breakpoint callback with Python

[Nikita Karetnikov via lldb-dev]

Hello,

I'm trying to figure out how to write a simple tracer.  Specifically, I
want to
perform some 'step's after a breakpoint callback fires.  How do I do that in
async mode?

Here's my attempt:
https://gist.github.com/nkaretnikov/6ee00afabf73332c5a89eacb610369c2

The problem is that pc is not updated (pc: 0xffffffffffffffff) when the loop
executes the second time.

I've also attempted to refactor this code based on:
http://llvm.org/svn/llvm-project/lldb/trunk/examples/python/process_events.py

My idea was to have a similar loop as the one that's after 'listener =
...'.  It
would sit there waiting for events, and I would somehow broadcast an event
from
the callback.  Maybe with 'state == lldb.eStateStopped' and a global
variable
allowing me to distinguish this event type from the rest.

But I can't find a way to do this.  Either I get the same behavior as
without
events or my events are ignored completely (likely because I use them
incorrectly).

I haven't published the code of the event version, but I can do that later
unless someone proposes a working solution right away.

Thanks,
Nikita
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