# normal sub - no parameters.
my $thread = async \&subname;

# sub with args
my $thread = async \&subname, $arg1, $arg2;

# method - no parameters.
my $thread = async \&pClass::method, $obj;


# method with args
my $thread = async \&Classname::method, $obj, $arg1, $arg2;

##</code><code>##

my $thread = threads->create( \&sub, $arg1, $arg2 );

my $thread = threads->new( \&Classname::method, $obj, $arg1, $arg2 );