This is the mail archive of the
systemtap@sourceware.org
mailing list for the systemtap project.
Re: More user-space probes
- From: Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>
- To: David Smith <dsmith at redhat dot com>
- Cc: Systemtap List <systemtap at sources dot redhat dot com>
- Date: Tue, 29 Apr 2008 13:23:01 +0530
- Subject: Re: More user-space probes
- References: <480DEAD0.10802@redhat.com>
- Reply-to: ananth at in dot ibm dot com
On Tue, Apr 22, 2008 at 08:40:32AM -0500, David Smith wrote:
> I've just finished implementing some new forms of user-space probing.
> Here's an example script:
>
> probe process("/bin/ls").exec { print("ls exec'ed!\n") }
> probe process("/bin/ls").syscall { printf("|%d", $syscall) }
> probe process("/bin/ls").syscall.return { print("+") }
> probe process("/bin/ls").death { print("\nls done!\n") }
>
> There are 5 new probe variants:
>
> process(PID_OR_PATH).clone
> process(PID_OR_PATH).exec
> process(PID_OR_PATH).death
> process(PID_OR_PATH).syscall
> process(PID_OR_PATH).syscall.return
>
> (Internally, these are implemented using utrace. These probe types also
> use the new "task_finder" framework, which provides the support by
> probing by PID or by PATH. Eventually, the existing uprobes probes (and
> the future itrace probes) should be converted to use the "task_finder"
> framework.)
Dave,
Would it be possible to update the language reference with the new
constructs? I guess the langref needs an update for the marker support
too.
Ananth