Re: [DynInst_API:] Tracing from a thread?

[Bill Williams <bill@xxxxxxxxxxx>]

On 06/02/2015 02:57 PM, Tony Zhang wrote:
> Hello,
>
> Is it possible to use DynInst from a different thread within a process?
> For example, a program would create multiplepthreads, and one of them (a
> master) then attempts to control the execution of all other threads in
> the program.
This isn't directly supported (assuming I understand your question), and 
I know I haven't tested any of the ways that you could in theory try to 
force this to work. (Self-attach I don't *think* will work, and likewise 
attaching to the child LWPs individually seems like a bad idea. You 
could insert instrumentation either statically or dynamically that has 
the effect of controlling a bunch of worker threads from a master one, 
but I don't think that's what you're trying to do here.)
Can you share a bit of context on your problem? That may suggest 
actually-supported ways to achieve what you want.
> Thanks
> Tony
>
>
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--
--bw

Bill Williams
Paradyn Project
bill@xxxxxxxxxxx