1 files changed, 55 insertions, 0 deletions
diff --git a/contrib/perl5/ext/attrs/attrs.pm b/contrib/perl5/ext/attrs/attrs.pm
new file mode 100644
index 0000000000000..fe2bf356e4fa4
--- /dev/null
+++ b/contrib/perl5/ext/attrs/attrs.pm
@@ -0,0 +1,55 @@
+package attrs;
+require DynaLoader;
+use vars '@ISA';
+@ISA = 'DynaLoader';
+
+use vars qw($VERSION);
+$VERSION = "1.0";
+
+=head1 NAME
+
+attrs - set/get attributes of a subroutine
+
+=head1 SYNOPSIS
+
+    sub foo {
+        use attrs qw(locked method);
+        ...
+    }
+
+    @a = attrs::get(\&foo);
+
+=head1 DESCRIPTION
+
+This module 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<attr::get> on a subroutine reference or name returns its list
+of attribute names. Notice that C<attr::get> is not exported.
+Valid attributes are as follows.
+
+=over
+
+=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
+
+bootstrap attrs $VERSION;
+
+1;