My question wasn't very directional... I was wanting to know the relative performance of a blessed code ref vs a unblessed code ref
So I put together a little benchmark comparing:
- calling a code ref directly
- blessing a code ref and calling it directly
- blessing a code ref and calling another method in the object
Blessing the code ref does have a performance impact when using it as a code ref compared to an unblessed code ref. However it is cheap compared to calling a method on the object
use strict;
use warnings;
use feature ":all";
use Benchmark qw<cmpthese>;
my $count=$ARGV[0]//1;
package SUB_TEST {
sub new { bless sub {1}, __PACKAGE__}
sub method { 1 }
}
my $obj=SUB_TEST->new();
my $sub=sub {1};
cmpthese($count,
{
blessed=>sub {$obj->()},
method=>sub{$obj->method()},
sub=>sub{$sub->()}
}
);
Output:
Rate method blessed sub
method 18939394/s -- -30% -39%
blessed 27173913/s 43% -- -12%
sub 30864198/s 63% 14% --
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