bool comm_ready = false;
if (not pimpl_->comm_queue_.empty()) {
comm_ready = pimpl_->comm_queue_.front()->state_ == SIMIX_DONE;
bool comm_ready = false;
if (not pimpl_->comm_queue_.empty()) {
comm_ready = pimpl_->comm_queue_.front()->state_ == SIMIX_DONE;