package attrs;
use XSLoader ();
$VERSION = "1.03";
=head1 NAME
attrs - set/get attributes of a subroutine (deprecated)
=head1 SYNOPSIS
sub foo {
use attrs qw(locked method);
...
}
@a = attrs::get(\&foo);
=head1 DESCRIPTION
NOTE: Use of this pragma is deprecated. Use the syntax
sub foo : locked method { }
to declare attributes instead. See also L<attributes>.
This pragma lets you set and get attributes for subroutines.
Setting attributes takes place at compile time; trying to set
invalid attribute names causes a compile-time error. Calling
C<attrs::get> on a subroutine reference or name returns its list
of attribute names. Notice that C<attrs::get> is not exported.
Valid attributes are as follows.
=over 4
=item method
Indicates that the invoking subroutine is a method.
=item locked
Setting this attribute is only meaningful when the subroutine or
method is to be called by multiple threads. When set on a method
subroutine (i.e. one marked with the B<method> attribute above),
perl ensures that any invocation of it implicitly locks its first
argument before execution. When set on a non-method subroutine,
perl ensures that a lock is taken on the subroutine itself before
execution. The semantics of the lock are exactly those of one
explicitly taken with the C<lock> operator immediately after the
subroutine is entered.
=back
=cut
XSLoader::load 'attrs', $VERSION;
1;
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