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Joined: Nov 2001
Posts: 1,704
Moderator / Da Masta
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Moderator / Da Masta
Joined: Nov 2001
Posts: 1,704 |
I'm writing a Perl script (note: not CGI, it runs from the command line), and I want something to execute after 3 minutes. This means I need a timer of some sort. However, I don't want to use sleep because nothing else in the script will execute during those 3 minutes, which isn't good. Could anyone point me towards some kind of module or code or something to help get this done, please? 
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Joined: May 2000
Posts: 1,356
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sleep is not *really* a timer... but alarm() is [code][/code]use in a command line script or in a cgi script... it does not matter, as long as the platform supports alarm()
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Joined: Nov 2001
Posts: 1,704
Moderator / Da Masta
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Moderator / Da Masta
Joined: Nov 2001
Posts: 1,704 |
Burak to the rescue once again!  I'm having trouble getting that working, though... your_code() will execute straight after the script is executed, ignoring what I set $TIMEOUT as... Is there anything I'm missing? Thanks
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Joined: May 2000
Posts: 1,356
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if you write your code I can say something
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Joined: Nov 2001
Posts: 1,704
Moderator / Da Masta
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Moderator / Da Masta
Joined: Nov 2001
Posts: 1,704 |
I'm just pasting that into a fresh Perl script, and making a your_code() sub... 
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Joined: Nov 2001
Posts: 1,704
Moderator / Da Masta
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Moderator / Da Masta
Joined: Nov 2001
Posts: 1,704 |
Ah... Just checked on ASPN and one reply said that alarm() only works on *NIX systems, not on Win32 systems.  Is there a Win32 alternative to alarm(), either via a Perl module or another built-in function?
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Joined: May 2000
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It can be win9x... alarm() works on 2000... Also some of the %SIG works on that platform...
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Joined: May 2000
Posts: 1,356
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quote:
Ah... Just checked on ASPN and one reply said that alarm() only works on *NIX systems, not on Win32 systems
I assume that you've checked old messages. What is the date of it? Also what perl version does he talks about and which version of windows does he/she uses? Also, which version of windows/perl do you use?
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Joined: Nov 2001
Posts: 1,704
Moderator / Da Masta
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Moderator / Da Masta
Joined: Nov 2001
Posts: 1,704 |
Me: WinXP Pro/ActivePerl 5.8.0 Them (the reply): Unspecified Win32 platforms/ActivePerl 5.6 Plus these posts were from 2001, so in retrospect there's a good chance of them being out of date. But that wouldn't explain why your code isn't working on my server...
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Joined: May 2000
Posts: 1,356
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Uhm... I have 5.8 build 804 also... try this one (you must get a timeout error): #!/usr/bin/perl -w
use strict;
my $TIMEOUT = 3; # seconds
eval {
local $SIG{ALRM} = sub { die "alarmn" };
alarm $TIMEOUT;
your_code();
alarm 0;
};
if ($@) {
if($@ eq "alarmn") {
error("OPERATION TIMED OUT!");
} else {
error("your_code() generated errors: $@");
}
}
sub your_code {
for (1..1000000) {
print "$_n";
}
}
sub error {
die "ERROR! ERROR! ERROR! @_";
}
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Joined: Nov 2001
Posts: 1,704
Moderator / Da Masta
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Moderator / Da Masta
Joined: Nov 2001
Posts: 1,704 |
Yes It'll print up to 13095 before giving the ERROR! ERROR! ERROR! thing with "operation timed out". Then it dies.
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Joined: May 2000
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Then, alarm() and $SIG{ALRM} signal is working on your platform  I think that the problem lies inside your code...
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Joined: Nov 2001
Posts: 1,704
Moderator / Da Masta
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Moderator / Da Masta
Joined: Nov 2001
Posts: 1,704 |
Excellent... I had an idea that it'd be my fault, it usually is Here's the deal: I've written an AIM bot, and I want to add a !poll feature to it. People can create polls and registered users of the bot have 3 minutes to vote on that poll before the poll is closed, the votes counted and the results IMed to the poll starter. Using Net::AIM, how would I fit this into my script? In my eyes it seems impossible... Thanks again Burak
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Joined: May 2000
Posts: 1,356
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well well... sorry but I dont use aim (basically I hate it) and I cant examine/test the module
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