Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw

Re^5: Need Help With Alarm And Eval

by afoken (Monsignor)
on Dec 07, 2012 at 15:34 UTC ( #1007758=note: print w/replies, xml ) Need Help??

in reply to Re^4: Need Help With Alarm And Eval
in thread Need Help With Alarm And Eval

I want subs to switch on and off my alarm so that i can call them when needed

Why? The code you showed first is more or less the usual code for having a timeout in some long running code. (You do know the example in perlipc, right?) If you don't need a timeout, just don't mess with alarm and $SIG{'ALRM'} at all.

In code:

withTimeout(30,\&doSomething,sub { die 'Oooops, doSomething was too sl +ow' }); # <-- timeout after 30 seconds doSomething(); # <-- no timeout here

If you still think that you need to "switch on and off", please explain your actual problem.


Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1007758]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others lurking in the Monastery: (7)
As of 2016-10-26 01:34 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (330 votes). Check out past polls.