Damn, forgot to mention...
On 08/18, Oleg Nesterov wrote:
>
> Damn. I'll try to think more, but I simply can't decide what do we
> actually want in this case.
Yes, but at least
> Further, the current behavior seems to make it
> very hard (impossible?) to reliably tell a true group-stop from a
> PTRACE_INTERRUPT generated one.
is not true or I misunderstood... PTRACE_INTERRUPT doesn't lead to
group-stop, it stops the tracee individually.
And you if you get PTRACE_EVENT_STOP and WSTOPSIG() == SIGTTIN after
PTRACE_INTERRUPT, you know that the tracee did not report the "new"
SIGTTIN.
Or I missed your point?
Oleg.
