bool abstract_actor::unlink_from_impl(const actor_addr& other) {
if (!other) return false;
guard_type guard{m_mtx};
// remove_backlink returns true if this actor is linked to other
auto ptr = detail::raw_access::get(other);
if (!exited() && ptr->remove_backlink(address())) {
auto i = std::find(m_links.begin(), m_links.end(), ptr);
CPPA_REQUIRE(i != m_links.end());
m_links.erase(i);
return true;
}
return false;
}
bool abstract_actor::remove_link_impl(const actor_addr& other) {
CAF_LOG_TRACE(CAF_TSARG(other));
if (other == invalid_actor_addr || other == this) {
return false;
}
default_attachable::observe_token tk{other, default_attachable::link};
guard_type guard{mtx_};
// remove_backlink returns true if this actor is linked to other
auto ptr = actor_cast<abstract_actor_ptr>(other);
if (detach_impl(tk, attachables_head_, true) > 0) {
// tell remote side to remove link as well
ptr->remove_backlink(address());
return true;
}
return false;
}
