Re: System call number cached with help from SyscallObserver

[Andrew Cagney <cagney at redhat dot com>]

Mark Wielaard wrote:
> Hi Andrew,
>
> On Fri, 2006-09-15 at 11:16 -0400, Andrew Cagney wrote:
>   
> > The sole purpose of of Action is to provide a mechanism that facilitates 
> > the implementation of both in-band and out-of-band handling of 
> > notifications.
> >     
>
> What does that mean?
>
>   
in-band == handle within the core's event-loop thread - don't block
this obviously implies that during processing the core event-loop is 
stalled; while simple, it is also an architectural compromise

out-of-band == handle by some other thread - block then unblock
since the event-loop is never stalled more parallelism is possible

Andrew