dtrace discuss - Jul 2008 - GSoC: TclDtrace API - call for comments

Hi,

I''m developing, thanks to Google Summer of Code, a Tcl binding to
libdtrace.
I''m about to actually start coding and want to reassure myself that the
API
will be enough to be of any use. I''m aware that Tcl is not a
particularly
popular language, but hopefully some people here can, and will want to, 
digest it enough to share their views. The URL of current draft is
<http://dev.lrem.net/tcldtrace/wiki/CommandsList> - separate page for
comments
linked, though I will be reading here as well. Also I''ve noted down
what I
got from reading through libdtrace implementation, nothing innovative but any 
errors should be easily spotted by more experienced DTrace users (and 
developers): <http://dev.lrem.net/tcldtrace/wiki/LibDtrace>

Looking forward for your thoughts on this.


Kind regards,
Remigiusz ''lRem'' Modrzejewski

Hey lRem,
> I''m developing, thanks to Google Summer of Code, a Tcl binding to
libdtrace.
> I''m about to actually start coding and want to reassure myself
that the API
> will be enough to be of any use. I''m aware that Tcl is not a
particularly
> popular language, but hopefully some people here can, and will want to, 
> digest it enough to share their views. The URL of current draft is
> <http://dev.lrem.net/tcldtrace/wiki/CommandsList> - separate page for
comments
> linked, though I will be reading here as well. Also I''ve noted
down what I
> got from reading through libdtrace implementation, nothing innovative but
any
> errors should be easily spotted by more experienced DTrace users (and 
> developers): <http://dev.lrem.net/tcldtrace/wiki/LibDtrace>
Very cool!  As you have noted, libdtrace was never really documented --
and there are some wonky things like, say, the buffer handler.  My only
advice:  if you haven''t already, be sure to check out the JNI interface
to libdtrace, if only for its comments explaining its interactions with
libdtrace.  (For example, see the block comment about dtj_bufhandler()
for an explanation of the buffer handler.)  More information on the
Java DTrace API is here:

  http://opensolaris.org/os/project/dtrace-chime/java_dtrace_api/

Anwyay, strong work so far -- and looking forward to seeing the finished
API!

	- Bryan

--------------------------------------------------------------------------
Bryan Cantrill, Sun Microsystems Fishworks.       http://blogs.sun.com/bmc

2008/7/8 Remigiusz Modrzejewski <lrem at
sphere.pl>:
> Hi,
>
> I''m developing, thanks to Google Summer of Code, a Tcl binding to
libdtrace.
> I''m about to actually start coding and want to reassure myself
that the API
> will be enough to be of any use. I''m aware that Tcl is not a
particularly
> popular language, but hopefully some people here can, and will want to,
> digest it enough to share their views. The URL of current draft is
> <http://dev.lrem.net/tcldtrace/wiki/CommandsList> - separate page for
comments
> linked, though I will be reading here as well. Also I''ve noted
down what I
> got from reading through libdtrace implementation, nothing innovative but
any
> errors should be easily spotted by more experienced DTrace users (and
> developers): <http://dev.lrem.net/tcldtrace/wiki/LibDtrace>
As well as the Java bindings, which are very helpfully commented, you
might want to look at the libdtrace bindings I did for for Ruby:

  http://github.com/chrisa/ruby-dtrace/tree/master

It looks like you''re doing a very similar thing to the
"Consumer" API
my library provides.


Chris.