Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
There's quite a lot to the debugger beyond just itself.

Since the debugger is actually two parts, the hooks into the Perl interpreter and the code that manipulates these hooks, there's an awful lot one can do with the debugger interface beyond just debugging. As you've noted, Devel::NYTProf and Devel::Cover both use these same hooks, but to watch what the program does instead of interfere with the process.

If you're interested in learning some more about how a program executes (whether tracing it, gathering data about it, or otherwise fiddling about with it as it runs), the debugger hooks provide a useful if not simple interface to do that. Read perldebguts for more details on the hooks themselves; if you want to understand better how the debugger actually does stuff, read the debugger source, which contains extensive comments explaining how things work and how they get done. I recommend actually reading the raw source code rather than running it through perldoc, because the explanations make a lot more sense when you see the explanations and see the code that implements it at the same time.

In reply to Re: In the art of Perl Debugger Mastery, I seek enlightenment by pemungkah
in thread In the art of Perl Debugger Mastery, I seek enlightenment by Tommy

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others drinking their drinks and smoking their pipes about the Monastery: (4)
    As of 2019-06-20 19:57 GMT
    Find Nodes?
      Voting Booth?
      Is there a future for codeless software?

      Results (91 votes). Check out past polls.