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RE: reentrant probes
- From: "Gromova, Victoria" <victoria dot gromova at intel dot com>
- To: "Frank Ch. Eigler" <fche at redhat dot com>, "Prasanna S Panchamukhi" <prasanna at in dot ibm dot com>
- Cc: <systemtap at sources dot redhat dot com>
- Date: Thu, 5 May 2005 18:28:19 +0400
- Subject: RE: reentrant probes
Hi Frank,
Could it be possible & useful to defer probe handler execution to the
later point instead of just skipping it?
Victoria
-----Original Message-----
From: systemtap-owner@sources.redhat.com
[mailto:systemtap-owner@sources.redhat.com] On Behalf Of Frank Ch.
Eigler
Sent: Thursday, May 05, 2005 6:06 PM
To: Prasanna S Panchamukhi
Cc: systemtap@sources.redhat.com
Subject: Re: reentrant probes
Hi -
On Thu, May 05, 2005 at 06:49:11PM +0530, Prasanna S Panchamukhi wrote:
> [...] Another alternative approach to disarm the probes temporarily
> is to handle the new probe by single stepping without calling the
> registered user handlers. Please find the patch below. [...]
It would be desirable to flag the occurrence of such a skipped probe
somewhere, so that the user of that probe can tell that this has
happened. This is important because, without such an indication, a
systemtap user would have no indication that her program executed
incompletely.
- FChE