Stopping hanging commands (evals) within debugger

LanX has asked for the wisdom of the Perl Monks concerning the following question:

I'm more and more using my modified debugger as a shell replacement for bash.

But one thing bugs me, long running commands like loops can't be stopped by Ctrl-c.

The only way I know to stop a hanging command is to Ctrl-z and then killing the whole debugger-process (including the unsaved history)

Any suggestions how I can avoid this?

Maybe I can patch the eval to react on signals?

Cheers Rolf

Comment on Stopping hanging commands (evals) within debugger

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Re: Stopping hanging commands (evals) within debugger by BrowserUk (Patriarch) on Dec 17, 2012 at 00:07 UTC
Just wrap your string eval in a block eval in which you set a `%SIG{ INT } = sub{ die; }`; ie: `eval { local $SIG{ INT } = sub{die}; eval $_code };` [download] If you also want to be able to break out of long-running opcodes, you'd have to look at setting `local $ENV{ PERL_SIGNALS } = 'unsafe';`. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. RIP Neil Armstrong	[reply] [d/l] [select]
Re^2: Stopping hanging commands (evals) within debugger by LanX (Saint) on Dec 17, 2012 at 00:35 UTC
Excellent, testscript works fine! =) `$\|=1; $_code=' sleep 1, print for (1..100)'; eval { local $SIG{ INT } = sub{die;}; eval $_code }; print "after interrupt"; eval $_code; # again w/o wrapper` [download] I'll post again when I got it integrated within the debugger! Cheers Rolf	[reply] [d/l]


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