Class: Fiddle::Closure::BlockCaller

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `::Fiddle::Closure`
Instance Chain: self, `::Fiddle::Closure`
Inherits:	Fiddle::Closure `::Object` Fiddle::Closure Fiddle::Closure::BlockCaller
Defined in:	ext/fiddle/lib/fiddle/closure.rb

Overview

Extends ::Fiddle::Closure to allow for building the closure in a block

.create	Create a new closure.
.new	Alias for Pinned.new.

#args	arguments of the FFI closure.
#ctype	the C type of the return of the FFI closure.
#freed?	Whether this closure was freed explicitly.

#free	Free this closure explicitly.
#to_i	Returns the memory address for this closure.

Construct a new BlockCaller object.

If there is an error in preparing the ffi_cif or ffi_prep_closure, then a RuntimeError will be raised.

include Fiddle

cb = Closure::BlockCaller.new(TYPE_INT, [TYPE_INT]) do |one|
  one
end

func = Function.new(cb, [TYPE_INT], TYPE_INT)

[ GitHub ]

# File 'ext/fiddle/lib/fiddle/closure.rb', line 60


def initialize ctype, args, abi = Fiddle::Function::DEFAULT, &block
  super(ctype, args, abi)
  @block = block
end

Calls the constructed BlockCaller, with Fiddle::Closure#args

For an example see .new

[ GitHub ]

# File 'ext/fiddle/lib/fiddle/closure.rb', line 69


def call *args
  @block.call(*args)
end