11 attrs - set/get attributes of a subroutine
16 use attrs qw(locked method);
20 @a = attrs::get(\&foo);
24 This module lets you set and get attributes for subroutines.
25 Setting attributes takes place at compile time; trying to set
26 invalid attribute names causes a compile-time error. Calling
27 C<attr::get> on a subroutine reference or name returns its list
28 of attribute names. Notice that C<attr::get> is not exported.
29 Valid attributes are as follows.
35 Indicates that the invoking subroutine is a method.
39 Setting this attribute is only meaningful when the subroutine or
40 method is to be called by multiple threads. When set on a method
41 subroutine (i.e. one marked with the B<method> attribute above),
42 perl ensures that any invocation of it implicitly locks its first
43 argument before execution. When set on a non-method subroutine,
44 perl ensures that a lock is taken on the subroutine itself before
45 execution. The semantics of the lock are exactly those of one
46 explicitly taken with the C<lock> operator immediately after the
47 subroutine is entered.
53 bootstrap attrs $VERSION;