mini_object_take

Modifies a pointer to point to a new mini-object.

The modification is done atomically. This version is similar to mini_object_replace except that it does not increase the refcount of newdata and thus takes ownership of newdata .

Either newdata and the value pointed to by olddata may be null.

Parameters:

olddata	pointer to a pointer to a mini-object to be replaced
newdata	pointer to new mini-object

Returns:

true if newdata was different from olddata