Method: Fiddle::CStructEntity.malloc

Defined in:
lib/fiddle/struct.rb

.malloc(types, func = nil, size = size(types)) ⇒ Object

Allocates a C struct with the types provided.

See Fiddle::Pointer.malloc for memory management issues.



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# File 'lib/fiddle/struct.rb', line 293

def CStructEntity.malloc(types, func = nil, size = size(types))
  if block_given? and func.nil?
    message = "a free function must be supplied to #{self}.malloc " +
              "when it is called with a block"
    raise ArgumentError, message
  end

  pointer = Pointer.malloc(size)
  begin
    struct = new(pointer, types, func)
  rescue
    pointer.free = func
    pointer.call_free
    raise
  end
  if block_given?
    begin
      yield(struct)
    ensure
      struct.call_free
    end
  else
    struct
  end
end