Hi!
On a side note, running the openca compile with 2>bad.out.txt
returns some errors and running openca with -w gives a few more(bad
initial vars,etc). If we come up with a good diff, do you want
a slashdot bug report or just an email to this list?
thanks!
rt
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of Michael Bell
Sent: Mon 11/8/2004 3:58 AM
To: [EMAIL PROTECTED]
Cc:
Subject: [OpenCA-Devel] Memory leaks
Hi all,
OpenCA especially the batch mechanism has problems with memory leaks.
Chris performs several tests to find out this and I searched for several
months to find the reason. Last weekend I ahd an idea and now I have a
small demo script:
####################################################
use Apache::Leak;
leak_test
{
$return = go ();
};
sub go
{
my %rest = undef;
$rest{test} = "123";
## go_1 (\%rest);
## undef %rest;
go_1 (\%rest);
undef %rest;
}
sub go_1
{
my $self = shift;
return $self;
}
###################################################
The interesting stuff is the function go. You can test the function with
passing %rest as hash and a reference and you can use undef %rest or you
can remove it. The interesting thing is that if yoou pass %rest as
reference then the garbage collection of perl does not work and you have
to undef %rest explicitly. We widely use this in OpenCA::DBI and
sometimes indirectly with the crypto stuff.
To the developers, if you use references as parameters then be really
careful with the destruction of the references - out of scope means not
out of memory.
Michael
--
_______________________________________________________________
Michael Bell Humboldt-Universitaet zu Berlin
Tel.: +49 (0)30-2093 2482 ZE Computer- und Medienservice
Fax: +49 (0)30-2093 2704 Unter den Linden 6
[EMAIL PROTECTED] D-10099 Berlin
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