-s4u::Mailbox *s4u::Mailbox::byName(const char*name) {
- s4u::Mailbox *res;
- try {
- res = mailboxes->at(name);
- } catch (std::out_of_range& e) {
- // FIXME: there is a potential race condition here where two actors run Mailbox::byName on a non-existent mailbox
- // during the same scheduling round. Both will be interrupted in the simcall creating the underlying simix mbox.
- // Only one simix object will be created, but two S4U objects will be created.
- // Only one S4U object will be stored in the hashmap and used, and the other one will be leaked.
- new Mailbox(name,simcall_mbox_create(name));
- res = mailboxes->at(name); // Use the stored one, even if it's not the one I created myself.
+
+MailboxPtr Mailbox::byName(const char*name)
+{
+ kernel::activity::MailboxImpl* mbox = kernel::activity::MailboxImpl::byNameOrNull(name);
+ if (mbox == nullptr) {
+ mbox = simix::kernelImmediate([name] {
+ return kernel::activity::MailboxImpl::byNameOrCreate(name);
+ });