That's right. Since USDT instrumentation is highly ISA-dependant, providers
dependency attributes may be no greater than ISA.
Adam
On Tue, Mar 11, 2008 at 07:14:54PM +0300, Nikita Zinoviev wrote:
> I'd like to report the following issue:
> it seems that user is unable to set dependency attributes
> to COMMON, it looks like ISA is the maximum for USDT probes.
> This kind of contradics corresponding chapter in the user guide,
> because it uses COMMON a lot, and doesn't mention anything about ISA.
>
> Also I found that corresponding attribute pragmas should be placed
> *after* provider declarations not before as the guide suggests.
>
> this looks like holes in the documentation.
> BTW: the error which dtrace -G reports is not very helpful either.
>
> So, the following provider definition script:
>
> provider myserv {
> probe myprobe(int i);
> };
>
> #pragma D attributes Standard/Standard/Common provider myserv provider
> #pragma D attributes Standard/Standard/Common provider myserv module
> #pragma D attributes Standard/Standard/Common provider myserv function
> #pragma D attributes Standard/Standard/Common provider myserv name
> #pragma D attributes Standard/Standard/Common provider myserv args
>
>
> here is the dtrace output:
>
>
> bash-3.2$ dtrace -n "myserv\$target:::" -c myserv -v -l
> ID PROVIDER MODULE FUNCTION NAME
> 1692 myserv14919 myserv main
> myprobe
>
> Probe Description Attributes
> Identifier Names: Standard
> Data Semantics: Standard
> Dependency Class: ISA
>
> Argument Attributes
> Identifier Names: Standard
> Data Semantics: Standard
> Dependency Class: ISA
>
> Argument Types
> args[0]: int
>
>
> or
>
>
> bash-3.2$ dtrace -n "myserv\$target:::" -c myserv -v
> dtrace: description 'myserv$target:::' matched 1 probe
>
> Stability attributes for description myserv$target::::
>
> Minimum Probe Description Attributes
> Identifier Names: Standard
> Data Semantics: Standard
> Dependency Class: ISA
>
> Minimum Statement Attributes
> Identifier Names: Stable
> Data Semantics: Stable
> Dependency Class: Common
>
> Hello!
> dtrace: pid 14917 has exited
> CPU ID FUNCTION:NAME
> 1 1692 main:myprobe
>
>
> Regards,
>
> Nikita Zinoviev
> _______________________________________________
> dtrace-discuss mailing list
> [email protected]
--
Adam Leventhal, Fishworks http://blogs.sun.com/ahl
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