[Bug libc/16291] feature request: provide simpler ways to compute stack and tls boundaries

["bugdal at aerifal dot cx" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16291

--- Comment #39 from Rich Felker <bugdal at aerifal dot cx> ---
I don't like hook-style callbacks either. My preference remains a query-based
API, preferably documented as being AS-safe and possibly other properties that
would make ASAN and similar tools happy (for example having bounded execution
time even if other threads are stopped indefinitely such as via a signal
handler interrupting them while holding a lock). I realize this makes a bit
more work for tools like ASAN which would rather have asynchronous notification
(note: they could still get it by intercepting the functions that could change
the state then calling the query function during the intercept), but such tools
are already doing something that's fairly hard and invasive.

So far I've been looking at this tracker thread so far with the hopes of being
able to provide the same or close-to-the-same API in musl, but if it looks like
that's not likely to happen or it's distracting from the goal of getting
something done with respect to just glibc, I can back off somewhat from this
thread, focusing any further contribution I make to it on just technical
aspects.

-- 
You are receiving this mail because:
You are on the CC list for the bug.