| 35 | } |
| 36 | |
| 37 | int UserDataContainer::do_pop(Typeinfo* type) { |
| 38 | auto iter = m_storage.find(type); |
| 39 | if (iter == m_storage.end()) |
| 40 | return 0; |
| 41 | auto&& vec = iter->second; |
| 42 | mgb_assert(!vec.empty()); |
| 43 | // use aliasing constructor to avoid deleter call |
| 44 | std::shared_ptr<UserData> ptr( |
| 45 | std::shared_ptr<UserData>{}, static_cast<UserData*>(vec.back())); |
| 46 | auto nr = m_refkeeper.erase(ptr); |
| 47 | mgb_assert(nr); |
| 48 | vec.pop_back(); |
| 49 | if (vec.empty()) { |
| 50 | m_storage.erase(iter); |
| 51 | } |
| 52 | return 1; |
| 53 | } |
| 54 | |
| 55 | void CleanupCallback::add(Callback callback) { |
| 56 | m_callbacks.emplace_back(std::move(callback)); |