[26188] in Perl-Users-Digest
Perl-Users Digest, Issue: 8377 Volume: 10
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Thu Sep 1 03:05:47 2005
Date: Thu, 1 Sep 2005 00:05:04 -0700 (PDT)
From: Perl-Users Digest <Perl-Users-Request@ruby.OCE.ORST.EDU>
To: Perl-Users@ruby.OCE.ORST.EDU (Perl-Users Digest)
Perl-Users Digest Thu, 1 Sep 2005 Volume: 10 Number: 8377
Today's topics:
Re: array question (newbie) <someone@example.com>
Re: Dealing With Zombies in a Daemon <hal@thresholddigital.com>
problem installing date::calc on win box <not_valid2@yahoo.com>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
----------------------------------------------------------------------
Date: Thu, 01 Sep 2005 02:13:58 GMT
From: "John W. Krahn" <someone@example.com>
Subject: Re: array question (newbie)
Message-Id: <GttRe.212103$9A2.133190@edtnps89>
A. Sinan Unur wrote:
> John Bokma <john@castleamber.com> wrote in
> news:Xns96C38803D3FB0castleamber@130.133.1.4:
>
>>If most regulars stop replying to posts that don't follow
>>the posting guidelines, or are not about Perl, a lot of
>>noise might be gone.
>
> I agree it is worth a shot.
>
>>I am going to try it :-D.
>
> I'll try to follow your lead.
Ah, finally a leader we can all follow. ;-)
John
--
use Perl;
program
fulfillment
------------------------------
Date: Thu, 01 Sep 2005 00:27:36 -0400
From: Hal Vaughan <hal@thresholddigital.com>
Subject: Re: Dealing With Zombies in a Daemon
Message-Id: <3fidnZ2dnZ0n5vjmnZ2dnaUei96dnZ2dRVn-0J2dnZ0@comcast.com>
Dan Wilga wrote:
> In article <HJGdnYDVYcVVP47eRVn-oQ@comcast.com>,
> Hal Vaughan <hal@thresholddigital.com> wrote:
>
>> 1) Do the unreaped zombies actually take up memory space, or just a
>> number in the list of PIDs?
>
> Both. The worst part is that most operating systems have a limit on the
> number of processes that is lower than the range of possible PIDs. When
> you hit this limit, weird things start to happen, because all of the
> various daemons can no longer fork.
>
>> 2) I understand I can reap by setting $SIG{CHLD} to IGNORE, is that by
>> just
>> using an assignment ($SIG{CHLD} = IGNORE), and how well does it work?
>> The name makes me think it just ignores zombies without doing anything.
>
> That's exactly what it does. Technically, it ignores children that
> terminate. They never have time to become zombies.
>
>> 3) Am I doing something wrong in the routines below, or is there a better
>> way to do this?
>
> Instead of cleaning up at set intervals, why not just do it in the
> $SIG{CHLD} handler?
>
> $SIG{CHLD} = \&reaper;
> ...
> sub reaper {
> 1 while( ($waitedpid = waitpid( -1, WNOHANG )) > 0 );
> $SIG{CHLD} = \&reaper; # apparently needed on some OSes
> }
>
>> 4) Why is the program hanging and waiting for the program that is still
>> running?
>
> That, I'm not so sure about. It could be because your OS is one that
> requires the signal handler to be reset in %SIG every time the signal is
> caught. My example shows this, as does `perldoc perlipc`.
I will check on that. I forgot that I should have mentioned my OS (Linux).
Thanks!
Hal
------------------------------
Date: Wed, 31 Aug 2005 23:19:40 -0500
From: "news-acct" <not_valid2@yahoo.com>
Subject: problem installing date::calc on win box
Message-Id: <43168181$0$8037$8046368a@newsreader.iphouse.net>
running ppm install date::calc on win xp sp2.
I get the following reply:::
Searching for 'date::calc' returned multiple results. Using 'search' ins
Searching in Active Repositories
1. Date-Calc [5.3] Gregorian calendar date calculations
2. Date-Calc [5.4] Gregorian calendar date calculations
3. Date-Calc-Iterator [1.00] Iterate over a range of dates
Is this the correct module for Win XP? I can install it using ppm
install date-calc. however, I can not use it
get error msg:
D:\scram\ner\ko\be> perl date1.pl
Can't locate date.pm in @INC (@INC contains: C:/Perl/lib
C:/Perl/site/lib .) at
BEGIN failed--compilation aborted at date1.pl line 2.
the module does exist in: C:\Perl\site\lib\Date\Calc.pm
thanks
------------------------------
Date: 6 Apr 2001 21:33:47 GMT (Last modified)
From: Perl-Users-Request@ruby.oce.orst.edu (Perl-Users-Digest Admin)
Subject: Digest Administrivia (Last modified: 6 Apr 01)
Message-Id: <null>
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End of Perl-Users Digest V10 Issue 8377
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