Method GetFromShared

layers/sync/sync_op.h:76–87

    using const_iterator = Map::const_iterator;

    SyncEventState *GetFromShared(const SyncEventState::EventPointer &event_state) {
        const auto find_it = map_.find(event_state.get());
        if (find_it == map_.end()) {
            if (!event_state.get()) return nullptr;

            const auto *event_plain_ptr = event_state.get();
            auto sync_state = std::make_shared<SyncEventState>(event_state);
            auto insert_pair = map_.emplace(event_plain_ptr, sync_state);
            return insert_pair.first->second.get();
        }
        return find_it->second.get();
    }

    const SyncEventState* Get(const SyncEventState::EventPointer& event_state) const {
        const auto find_it = map_.find(event_state.get());