Messages in this thread | | | Date | Fri, 15 Feb 2013 20:43:56 +0100 | From | Oleg Nesterov <> | Subject | Re: [PATCH] ptrace: add ability to retrieve signals without removing them from a queue |
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On 02/15, Pedro Alves wrote: > > Not sure I'm reading the patch right, but it looks like GDB would > be able to use this as alternative to PTRACE_GET_SIGINFO variant
No, it is different. PTRACE_GETSIGINFO reports the siginfo for the signal which was already dequeued (ignoring the fact ->last_siginfo != NULL doesn't necessarily mean we report a signal), while this patch allows to look at the pending signals which were not reported yet.
> I wouldn't mind if this was added unconditionally > instead of wrapped on CONFIG_CHECKPOINT_RESTORE.
I agree. If you think gdb can use this new feature, CONFIG_ can go away.
> We'd miss the poke > variant, but that looks like something that could be always be added > later.
Yes. _POKE_ or _QUEUE_ or _DEQUEUE_, we can add more features if user- space wants them.
Oleg.
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