Contents

module Rufus::Lua
  # Auto-unref Lua ref when it goes out of scope in Ruby.
  class Ref
    def initialize_with_finalizer(*args)
      initialize_without_finalizer(*args)

      ObjectSpace.define_finalizer self, self.class.finalize(@pointer, @ref)
    end
    alias_method :initialize_without_finalizer, :initialize
    alias_method :initialize, :initialize_with_finalizer

    def self.finalize(pointer, ref)
      # Hack to test if the Lua state was closed and de-refed.
      original_pointer_address = pointer.read_pointer
      proc do
        Lib.luaL_unref(pointer, LUA_REGISTRYINDEX, ref) if original_pointer_address == pointer.read_pointer
      end
    end

    undef :free
    def free
      # Noop. Taken care of by finalizer. Should not conflict.
    end

    public :load_onto_stack
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
immunio-0.15.4	lib/immunio/rufus_lua_ext/ref.rb
immunio-0.15.3	lib/immunio/rufus_lua_ext/ref.rb
immunio-0.15.2	lib/immunio/rufus_lua_ext/ref.rb