Re: Debugging threaded processes -- ptrace proposal

[Antti Kantee <pooka%cs.hut.fi@localhost>]

Per a quick test (i tried putting breakpoints and single-stepping the
usb stack and the tcp/ip stack), it really appears to work (on nb5).

Just a minor nit: if the process exits after i single-step into a thread
sleep, I get this:

Child process unexpectedly missing: No child processes.
Child process unexpectedly missing: No child processes.
Child process unexpectedly missing: No child processes.
Child process unexpectedly missing: No child processes.
Child process unexpectedly missing: No child processes.
Child process unexpectedly missing: No child processes.
Child process unexpectedly missing: No child processes.
Child process unexpectedly missing: No child processes.
Child process unexpectedly missing: No child processes.
Child process unexpectedly missing: No child processes.

And gdb goes into a -9'able busyloop.

Anyway, that's a minor annoyance and probably easy to fix.

Awesome work!