1 /* Copyright (c) 2006-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "src/msg/msg_private.h"
10 #include "simgrid/s4u/mailbox.hpp"
12 XBT_LOG_EXTERNAL_CATEGORY(s4u);
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_channel,s4u,"S4U Communication Mailboxes");
16 using namespace simgrid;
18 boost::unordered_map <std::string, s4u::Mailbox *> *s4u::Mailbox::mailboxes = new boost::unordered_map<std::string, s4u::Mailbox*> ();
21 s4u::Mailbox::Mailbox(const char*name, smx_mailbox_t inferior) {
24 mailboxes->insert({name, this});
26 const char *s4u::Mailbox::getName() {
29 s4u::Mailbox *s4u::Mailbox::byName(const char*name) {
32 res = mailboxes->at(name);
33 } catch (std::out_of_range& e) {
34 // FIXME: there is a potential race condition here where two actors run Mailbox::byName on a non-existent mailbox
35 // during the same scheduling round. Both will be interrupted in the simcall creating the underlying simix rdv.
36 // Only one simix object will be created, but two S4U objects will be created.
37 // Only one S4U object will be stored in the hashmap and used, and the other one will be leaked.
38 new Mailbox(name,simcall_rdv_create(name));
39 res = mailboxes->at(name); // Use the stored one, even if it's not the one I created myself.