reentrant probes
Gromova, Victoria
victoria.gromova@intel.com
Thu May 5 14:28:00 GMT 2005
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
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