[Bug translator/3672] New: Support formatted dump of kernel structures

[Bug translator/3672] New: Support formatted dump of kernel structures

[mmlnx at us dot ibm dot com]

Add a function or extend printf to dump a kernel structure in a human readable
format, similar to what gdb can do.  Does dwarf give us enough info to do this
without requiring the script to specify the structure type?

For example, something like this:

print_struct($sock)

where $sock is a pointer to a struct socket could output this:

{
  state = 1,
  flags = 6,
  ops = 0x83337444,
  fasync_list = 0x84435355,
  file = 0x54338234,
  sk = 0x73322556,
  wait = {
    lock = 1,
    task_list = {
      next = 0x822334455,
      prev = 0x855443322
    },
  },
  type = 0
}

-- 
           Summary: Support formatted dump of kernel structures
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: translator
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: mmlnx at us dot ibm dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=3672

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[Bug translator/3672] Support formatted dump of kernel structures

[fche at redhat dot com]

------- Additional Comments From fche at redhat dot com  2008-03-18 01:39 -------
*** Bug 5954 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mhiramat at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=3672

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[Bug translator/3672] Support formatted dump of kernel structures

[fche at redhat dot com]

------- Additional Comments From fche at redhat dot com  2008-08-15 22:28 -------
Another possible syntax for this is inspired by the $$vars introduced
recently.  Expanding struct contents could be represented like so:

    $var$  =>  a string representation of $var's fields: like
               0xfoo
          or   {.foo=0xbeef, .zoo=0xp00}

To control the depth of nesting expansion, we could add extra "$"s at the end:

    $var$$ =>  {.foo=0xbeef, .bar={.so=0x44, .po=0x848}}

This could compose with the $$ variables too:

  $$vars$  =>  var1=0xdead var2={.foo=0xbeef, .zoo=0xp00}


-- 


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[Bug translator/3672] Support formatted dump of kernel structures

[mhiramat at redhat dot com]

------- Additional Comments From mhiramat at redhat dot com  2008-08-15 23:35 -------
(In reply to comment #2)
> Another possible syntax for this is inspired by the $$vars introduced
> recently.  Expanding struct contents could be represented like so:
> 

How about $$$var syntax?
It also could compose $$vars as $$$vars, or $$$parms.
and depth also be increased by adding $. ($$$$var)

>     $var$  =>  a string representation of $var's fields: like
>                0xfoo
>           or   {.foo=0xbeef, .zoo=0xp00}

I like latter format :-)

Thanks,

-- 


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[Bug translator/3672] Support formatted dump of struct $pointers

[fche at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Support formatted dump of   |Support formatted dump of
                   |kernel structures           |struct $pointers


http://sourceware.org/bugzilla/show_bug.cgi?id=3672

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[Bug translator/3672] Support formatted dump of struct $pointers

[fche at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |10907
              nThis|                            |


http://sourceware.org/bugzilla/show_bug.cgi?id=3672

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[Bug translator/3672] Support formatted dump of struct $pointers

[jistone at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|systemtap at sources dot    |jistone at redhat dot com
                   |redhat dot com              |
             Status|NEW                         |ASSIGNED


http://sourceware.org/bugzilla/show_bug.cgi?id=3672

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