/**
* Resets the internal unit pointer to match the given pointer.
* The value of my_manager_ is preserved -- the old unit is deregistered,
* and the new unit is registered with the same manager.
*/
void fake_unit_ptr::reset(const internal_ptr & ptr)
{
if (unit_.get() != ptr.get()) {
fake_unit_manager * mgr = my_manager_;
remove_from_fake_unit_manager();
unit_ = ptr;
if (mgr)
place_on_fake_unit_manager(mgr);
}
}
explicit operator bool() const
{ return unit_.get() != nullptr; }