Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
I'm trying to track down a rogue die in a large system that contains a lot of eval'd code. I was going to use a $SIG{__DIE__} handler to collect system state info at die, something like this:
#!/usr/bin/perl use strict; use warnings; # create a die handler - this will have stack trace # and global var dump in RL local $SIG{__DIE__} = sub { print "REAL DIE CAPTURED @_\n"; exit(0); } +; # localize the die handler (works as expected) print "eval die with local __DIE__ sig handler:\n"; eval { local $SIG{__DIE__}; die "OMG - someone killed kenny"; }; if ($@) { print "Eval die captured: $@\n"; } # no local die triggers handler above - expected, but unwanted. print "eval die without local __DIE__ sig handler:\n"; eval { die "OMG - someone killed kenny"; }; if ($@) { print "Eval die captured: $@\n"; } # real die, works as expected when previous case commented out print "REAL die:\n"; die("This is a real error"); print "\nDie failed...\n";

But, as you can see, I would have to find every eval and add in a localized $SIG{__DIE__} to override the newly defined global.

Is there any way I can force all evals to ignore the global handler and carry on as normal? Or am I going about this the wrong way? Perhaps I need to dive back into Carp to see what I'm missing. Hmmmm...

Thoughts anyone?


In reply to forcing eval'd die to ignore global $SIG{__DIE__} handler by cLive ;-)

Title:
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!
  • 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?
    Username:
    Password:

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

    How do I use this? | Other CB clients
    Other Users?
    Others perusing the Monastery: (5)
    As of 2015-07-04 23:37 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (60 votes), past polls