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Subject Author Date
Proc::ProcessTable Jens Puruckherr 08-04-2004
`--> Re: Proc::ProcessTable Reinhard Pagits...08-04-2004
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Posted by Jens Puruckherr on August 4, 2004, 9:00 am
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 Hi,

beim Zugriff auf die Prozesstabelle erhalte ich gelegentlich den Fehler:

Can't access `cmndline' field in class Proc::ProcessTable::Process

und meine Script beendet sich. Das kommt wirklich nur sporadisch vor.
Woran kann das liegen?


my $t = new Proc::ProcessTable;
foreach my $p(@){
if ($p->cmndline =~ /import_aktiv.pl/ ){
        .....
}
}



Jens

--
Locks are analogous to green traffic lights: If you have a green light,
that does not prevent the idiot coming the other way from plowing into
you sideways; it merely guarantees to you that the idiot does not also
have a green light at the same time. (man Tie::File)


Posted by Jens Puruckherr on August 4, 2004, 10:13 am
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 Jens Puruckherr wrote:

> my $t = new Proc::ProcessTable;
> foreach my $p(@){
> if ($p->cmndline =~ /import_aktiv.pl/ ){
> .....
> }
> }

Ich vermute mal, das zwischen Einlesen der Prozesstabelle und dem
Zugriff auf den einzelnen Prozess, dieser schon wieder beeendet ist.
Somit können seine Parameter natürlich nicht ausgelesen werden.
Wie kann wich aber dann hier den Abbruch verhindern?

Jens


--
Locks are analogous to green traffic lights: If you have a green light,
that does not prevent the idiot coming the other way from plowing into
you sideways; it merely guarantees to you that the idiot does not also
have a green light at the same time. (man Tie::File)


Posted by Reinhard Pagitsch on August 4, 2004, 2:25 pm
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Hello Jens,

Jens Puruckherr wrote:

> Jens Puruckherr wrote:
>
>> my $t = new Proc::ProcessTable;
>> foreach my $p(@){
>> if ($p->cmndline =~ /import_aktiv.pl/ ){
>> .....
>> }
>> }
>
>
> Ich vermute mal, das zwischen Einlesen der Prozesstabelle und dem
> Zugriff auf den einzelnen Prozess, dieser schon wieder beeendet ist.
> Somit können seine Parameter natürlich nicht ausgelesen werden.
> Wie kann wich aber dann hier den Abbruch verhindern?
Maybe you can check if $p->pid is available.
But I think in this newsgroup it is better to write in english than in
german.

mit freundlichen Grüßen,
with my best regards,
Reinhard

--
QA
ISIS Information Systems
Austria tel: (+43) 2236 27551 150 Fax: 2236 21081
Visit our web site http://www.isis-papyrus.com


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