The first kse_create call

Julian Elischer julian at elischer.org
Tue Jun 17 15:28:30 PDT 2003



On Tue, 17 Jun 2003, Daniel Eischen wrote:

> > Hi,
> > 
> > I'm trying to run simple program with kse. As I understood the very
> > first kse_create call does not create KSE but just assigns the mailbox
> > to the existing "default" KSE and makes upcall. May be I'm doing
> > something wrong,
> > but I never got upcall on the first kse. When I create another KSE (and
> > another KSE group) I immediatelly get the upcall for this (second) KSE.
> > Just interesting how does it work - may be the first KSE has special
> > behavior?
> 
> This is the correct behavior.  The first kse_create() does not
> generate an immediate upcall.  It only flags the current context
> as being a KSE.  An upcall in this initial KSE will take place
> under the same conditions as other KSEs (KSE mailbox has a thread
> mailbox pointer and thread blocks, quantum expires, etc).
> Subsequent kse_create() calls will generate upcalls immediately
> (well, at the mercy of the kernel scheduler).


Wellll, the kse_create() will not upcall, but the new kse that is
created will upcall.

The kse_create() call will just return to the original thread.

> 
> -- 
> Dan Eischen
> 
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