BUG? gdb, software watchpoints && multithreading

[Oleg Nesterov]

On 10/12, Oleg Nesterov wrote:
>
> Not that I really blame gdb, without hardware support it is not
> possible to implement this 100% correctly. But I assume this is
> not what we want?
>
> IOW, I think that ugdb should do the following. If any thread changes
> VAR, then all threads should stop and report T05watch to gdb.

This can't help, see "Q: ugdb && watchpoints" I sent.

> Another question. watch/Z2 is always per-process, there is no
> "thread-local" watches, right?
>
> And the last one. If gdb sends '$Z2' to gdbserver, the running
> threads do not participate in monitoring, until gdb stops the
> thread and resumes it again, correct?
>
> Oleg.