Closure.simple

Description:

[ CCode ( has_construct_function = false ) ]
public Closure.simple (uint sizeof_closure, void* data)

Allocates a struct of the given size and initializes the initial part as a Closure.

This function is mainly useful when implementing new types of closures:

typedef struct _MyClosure MyClosure;
struct _MyClosure
{
  GClosure closure;
  // extra data goes here
};

static void
my_closure_finalize (gpointer  notify_data,
                     GClosure *closure)
{
  MyClosure *my_closure = (MyClosure *)closure;

  // free extra data here
}

MyClosure *my_closure_new (gpointer data)
{
  GClosure *closure;
  MyClosure *my_closure;

  closure = g_closure_new_simple (sizeof (MyClosure), data);
  my_closure = (MyClosure *) closure;

  // initialize extra data here

  g_closure_add_finalize_notifier (closure, notify_data,
                                   my_closure_finalize);
  return my_closure;
}

Parameters:

sizeof_closure	the size of the structure to allocate, must be at least `sizeof (GClosure)`
data	data to store in the `data` field of the newly allocated Closure

Returns:

a floating reference to a new Closure