class MailboxImpl {
friend s4u::Mailbox;
+ friend s4u::MailboxPtr s4u::Mailbox::by_name(std::string name);
+ friend mc::CommunicationDeterminismChecker;
explicit MailboxImpl(std::string name)
: piface_(this), name_(name), comm_queue_(MAX_MAILBOX_SIZE), done_comm_queue_(MAX_MAILBOX_SIZE)