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How to catch signals from OS (unix)

 


arush_pareek
Novice

Feb 8, 2010, 2:21 AM

Post #1 of 7 (3701 views)
How to catch signals from OS (unix) Can't Post
I am having definition for my signal(SIGUSR2) in one script (say 1.pl)
and the same script 1.pl sends that signal when condition is meet.

I want to capture this signal in script 2 (say 2.pl )

Is there any way through from which my operating system ( unix )can tell me about that signal being called?????

What are the other way if it can`t be done through OS.......


shawnhcorey
Enthusiast


Feb 8, 2010, 5:20 AM

Post #2 of 7 (3696 views)
Re: [arush_pareek] How to catch signals from OS (unix) [In reply to] Can't Post
See `perldoc perlvar` and search for /\%SIG/

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7stud
Enthusiast

Feb 9, 2010, 12:17 AM

Post #3 of 7 (3656 views)
Re: [arush_pareek] How to catch signals from OS (unix) [In reply to] Can't Post
 
Quote
am having definition for my signal(SIGUSR2)
What is that definition'?

Quote
script 1.pl sends that signal when condition is meet
How does it send the signal? Where does it send the signal?


(This post was edited by 7stud on Feb 9, 2010, 12:18 AM)


arush_pareek
Novice

Feb 9, 2010, 12:54 AM

Post #4 of 7 (3645 views)
Re: [7stud] How to catch signals from OS (unix) [In reply to] Can't Post
Let me make this simple ....

i am having two independent perl script
first script is waiting for some event and when that event happens it need to tell the second script that event occurred.

So i was planning if i could send a signal from first script and the second script could catch that signal
And know that event has occurred


shawnhcorey
Enthusiast


Feb 9, 2010, 9:24 AM

Post #5 of 7 (3629 views)
Re: [arush_pareek] How to catch signals from OS (unix) [In reply to] Can't Post
In Reply To
Let me make this simple ....

i am having two independent perl script
first script is waiting for some event and when that event happens it need to tell the second script that event occurred.

So i was planning if i could send a signal from first script and the second script could catch that signal
And know that event has occurred
See:
perldoc -f kill
perldoc perlvar and search for /\%SIG/

__END__

I love Perl; it's the only language where you can bless your thingy.

Perl documentation is available at perldoc.perl.org. The list of standard modules and pragmatics is available in perlmodlib.

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7stud
Enthusiast

Feb 9, 2010, 2:40 PM

Post #6 of 7 (3618 views)
Re: [arush_pareek] How to catch signals from OS (unix) [In reply to] Can't Post
To send a signal to a process, you need to know the process id. If the two processes are independent, I don't know how you will obtain the process id of the receiver.


(This post was edited by 7stud on Feb 9, 2010, 2:42 PM)


shawnhcorey
Enthusiast


Feb 10, 2010, 5:12 AM

Post #7 of 7 (3566 views)
Re: [7stud] How to catch signals from OS (unix) [In reply to] Can't Post
In Reply To
To send a signal to a process, you need to know the process id. If the two processes are independent, I don't know how you will obtain the process id of the receiver.
One would record the process id when they started. Otherwise, see `perldoc perlipc`.

__END__

I love Perl; it's the only language where you can bless your thingy.

Perl documentation is available at perldoc.perl.org. The list of standard modules and pragmatics is available in perlmodlib.

Get Markup Help. Please note the markup tag of "code".

 
 


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