dtrace discuss - Oct 2008 - How to put '':'' in function name to specify probe

Hi all,
   I write a method in Objective-C  - (void)foo:(int)a; in class MyClass; and
then try to fire the probe. So I try to write as follows:
    objc$target:MyClass:''I don''t know what to write
here":entry
 
    since the method name in Objective-C is "foo:" ,which includes a
":" ,however ":" is reserved as the separator. Is there
anyway that I can put a ":"  other than as a separator? I know using
wildcard would solve the problem, but it would be better if I can accurately
specify the exact method name.

   I am a newbie to dtrace. Thanks for any help!
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This message posted from opensolaris.org

>   I write a method in Objective-C  - (void)foo:(int)a; in class  
> MyClass; and then try to fire the probe. So I try to write as follows:
>    objc$target:MyClass:''I don''t know what to write
here":entry
>
>    since the method name in Objective-C is "foo:" ,which includes
a
> ":" ,however ":" is reserved as the separator. Is there
anyway that
> I can put a ":"  other than as a separator? I know using wildcard
> would solve the problem, but it would be better if I can accurately  
> specify the exact method name.

Since you''re using Objective-C, I''m going to guess that
you''re on the
Mac
platform. If that''s the case, the folks at Apple have a special
''objc''
provider that''s documented in the dtrace(1) manpage in Mac OS X. If  
you''re
on Solaris, you''ll need to use the mangled name as it would appear in  
the
symbol table, and use that with the pid provider.

Adam

--
Adam Leventhal, Fishworks                        http://blogs.sun.com/ahl

Yes, I use leopard. So I check the Manual and find an example:

objc123::method?with?many?colons:entry
              The  method  method:with:many:colons  in  every class in process
              123. (A ? wildcard must be used to match colon characters inside
              of  Objective  C method names, as they would otherwise be parsed
              as the provider field separators.)

So according to the manual ,I think I can only use wildcard
''?'' to match ":" in the method name.
After all ,dtrace is not designed for objective-c :-) 

Thanks Adam.
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This message posted from opensolaris.org