Nice,
on my windows 10 box each package seems to eat ~1k of memory:
perl -we "sub mem{system qq(tasklist /FI \"PID eq $$\"|findstr perl)};
+ mem();bless {}, qq(A$_) for 1 .. 1000000;mem()"
perl.exe 29356 Console 1 6
+.616 K
perl.exe 29356 Console 1 1.353
+.656 K
and quite the same on my Linux box:
perl -we 'sub mem{system qq(cat /proc/$$/status | grep ^VmSize)}; mem(
+);bless {}, qq(A$_) for 1 .. 1000000;mem()'
VmSize: 23768 kB
VmSize: 1234168 kB
Obviously the package is empty..
perl -MDevel::Symdump -e "bless {},'notexisting';print Devel::Symdump-
+>new('noexisting')->as_string"
arrays
functions
hashes
ios
packages
scalars
unknowns
..holding just the AUTOLOAD
use strict;
use warnings;
my %before = %main::;
bless {},'nonexistent';
my %after = %main::;
foreach my $symbol (sort keys %after) {
next if exists $before{$symbol};
local *myglob = $after{$symbol};
if ( defined *myglob{HASH} ) {
my %val = %{ *myglob{HASH} };
print "HASH \%$symbol = ( ";
while( my ($key, $val) = each %val ) {
print "$key=>'$val', ";
}
print ")\n" ;
}
}
__END__
HASH %nonexistent:: = ( AUTOLOAD=>'*nonexistent::AUTOLOAD', )
..but: For various obscure reasons, typeglobs are always created with a Null SV in the SCALAR slot.
L*
There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.
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