lkml.org 
[lkml]   [2011]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 1/1] ptrace: make sure do_wait() won't hang after PTRACE_ATTACH
On Mon, Feb 14, 2011 at 6:39 PM, Oleg Nesterov <oleg@redhat.com> wrote:
>> Ah, I see. Is there any way debugger can distinguish between these two
>> different stops?
>
> IIRC, the (only?) way to distinguish is to check last_siginfo != NULL
> via ptrace(PTRACE_GETSIGINFO).

Right. ptrace(PTRACE_GETSIGINFO) will fail on non-signal-delivery stops.
Thus, it can be used to distinguish different kinds of SIGSTOPs in my example.
--
vda


\
 
 \ /
  Last update: 2011-02-14 20:01    [W:0.345 / U:1.084 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site