Class: Rupy::PyObject::AutoPyPointer

Inherits:
FFI::AutoPointer
  • Object
show all
Defined in:
lib/rupy/pyobject.rb

Overview

This class wraps C PyObject*s so that the Python reference count is automatically decreased when the Ruby object referencing them goes out of scope.

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.current_pointers ⇒ Object

Keeps track of which objects are associated with the currently running Python interpreter, so that RubyPython knows not to try to decrease the reference counts of the others when garbage collecting.



23
24
25
 
# File 'lib/rupy/pyobject.rb', line 23

def current_pointers
  @current_pointers
end

Class Method Details

.release(pointer) ⇒ Object

When used along with the FFI Library method is executed whenever a pointer is garbage collected so that cleanup can be done. In our case we decrease the reference count of the held pointer as long as the object is still good. There is really no reason the end-user would need to the use this method directly.



30
31
32
33
34
35
 
# File 'lib/rupy/pyobject.rb', line 30

def release(pointer)
    obj_id = pointer.object_id
    if (Python.Py_IsInitialized != 0) and @current_pointers.delete(obj_id)
        Python.Py_DecRef pointer
    end
end