dtrace discuss - Mar 2009 - dtrace

how to write our own probes for integrating dtrace with other scripting
langauage. eg:python
-- 
This message posted from opensolaris.org

how to write our own probes for integrating dtrace with other scripting
langauage. eg:python
-- 
This message posted from opensolaris.org

On 03/09/09 11:22, gautham k wrote:
> how to write our own probes for integrating dtrace with other scripting
langauage. eg:python
>   
See http://blogs.sun.com/binujp/entry/dtrace_provider_for_python. This 
must help.

Regards,
Krishnan

Hi!

On Mon, Mar 9, 2009 at 11:21 AM, gautham k <gauth.89 at gmail.com>
wrote:
> how to write our own probes for integrating dtrace with other scripting
langauage. eg:python
You want to write your own probes? Please refer to
http://www.solarisinternals.com/wiki/index.php/DTrace_Topics_USDT

Also, refer to http://blogs.sun.com/binujp/entry/dtrace_provider_for_python

Best,
Amit
> --
> This message posted from opensolaris.org
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org
>


-- 
http://amitksaha.blogspot.com
http://amitsaha.in.googlepages.com/
*Bangalore Open Java Users Group*:http:www.bojug.in

"Recursion is the basic iteration mechanism in Scheme"
--- http://c2.com/cgi/wiki?TailRecursion

hello everyone
can i get some example on how to integrate dtrace with scripting language
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://mail.opensolaris.org/pipermail/dtrace-discuss/attachments/20090317/b0c679fb/attachment.html>

On Tuesday, March 17, 2009, at 4:11 am, gautham k wrote:
> hello everyone
> can i get some example on how to integrate dtrace with scripting language
>
Take a look at the examples in DtraceToolkit, several of
which combine scripting languages and dtrace.  In OpenSolaris,
this is the SUNWDtraceToolkit package, which is installed in
/opt/DTT.  It is also available as a tar ball from
http://opensolaris.org/os/community/dtrace/dtracetoolkit/

HTH,
David

On Tue, Mar 17, 2009 at 7:20 PM, David Lutz <David.Lutz at sun.com>
wrote:
> On Tuesday, March 17, 2009, at 4:11 am, gautham k wrote:
>> hello everyone
>> can i get some example on how to integrate dtrace with scripting
language
>>
>
> Take a look at the examples in DtraceToolkit, several of
> which combine scripting languages and dtrace. ?In OpenSolaris,
> this is the SUNWDtraceToolkit package, which is installed in
> /opt/DTT. ?It is also available as a tar ball from
> http://opensolaris.org/os/community/dtrace/dtracetoolkit/
Also, please take a look at a similar discussion on BOSUG:
http://opensolaris.org/jive/thread.jspa?threadID=96871&tstart=0

-Amit

-- 
http://amitksaha.blogspot.com
http://amitsaha.in.googlepages.com/
*Bangalore Open Java Users Group*:http:www.bojug.in

"Recursion is the basic iteration mechanism in Scheme"
--- http://c2.com/cgi/wiki?TailRecursion

hello everyone

    I am looking into system call failure i know that system call fail when
errno is non-zero

     The following is my query
     1) I want to know  what information can i get by looking into the stack
using ustack() function.does it provide any vital information for my
analysis.


 thanks in advance
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://mail.opensolaris.org/pipermail/dtrace-discuss/attachments/20090409/ed479f5d/attachment.html>

Hi Gautham,
Reply inline..

On Thu, 2009-04-09 at 14:16 +0530, gautham k wrote:
> hello everyone
>  
>     I am looking into system call failure i know that system call fail
> when errno is non-zero 
>      
>      The following is my query
>      1) I want to know  what information can i get by looking into the
> stack using ustack() function.does it provide any vital information
> for my analysis.
ustack() gives the stack trace of userland functions that were called
before the function at which the probe was fired.
stack() is used to get the kernel stack in the same way.

How useful this information is depends on what exactly you are looking
for? It has always been handy to look at the stack to understand the
execution path.

Regards,
Krishnan 
>              
>      
>  thanks in advance
> 
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org

> On Thu, 2009-04-09 at 14:16 +0530, gautham k wrote:
>> hello everyone
>>  
>>     I am looking into system call failure i know that system call fail
>> when errno is non-zero 
Not exactly right: the return code of a system call indicates failure or 
success. Only if the return code indicates a failure (== -1, usually), 
errno contains valid information.

  Joachim

-- 
Joachim Worringen, Software Architect, Dolphin Interconnect Solutions
phone ++49/(0)228/324 08 17 - http://www.dolphinics.com

On Thu, Apr 09, 2009 at 11:09:34AM +0200, Joachim Worringen
wrote:
> >On Thu, 2009-04-09 at 14:16 +0530, gautham k wrote:
> >>hello everyone
> >> 
> >>    I am looking into system call failure i know that system call
fail
> >>when errno is non-zero 
> 
> Not exactly right: the return code of a system call indicates failure or 
> success. Only if the return code indicates a failure (== -1, usually), 
> errno contains valid information.
True for the userland "errno" variable.  The dtrace "errno"
variable, on the
other hand, is non-zero if and only if the system call failed.

Cheers,
- jonathan