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.TH attrs 3 "2002-06-01" "perl v5.8.0" "Perl Programmers Reference Guide"
attrs \- set/get attributes of a subroutine (deprecated)
\& use attrs qw(locked method);
\& @a = attrs::get(\e&foo);
\&\s-1NOTE:\s0 Use of this pragma is deprecated. Use the syntax
\& sub foo : locked method { }
to declare attributes instead. See also 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
\&\f(CW\*(C`attrs::get\*(C'\fR on a subroutine reference or name returns its list
of attribute names. Notice that \f(CW\*(C`attrs::get\*(C'\fR is not exported.
Valid attributes are as follows.
Indicates that the invoking subroutine is a method.
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 \fBmethod\fR 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 \f(CW\*(C`lock\*(C'\fR operator immediately after the