examples/cpp/activityset-waitany/s4u-activityset-waitany.cpp

   1 /* Copyright (c) 2010-2023. The SimGrid Team. All rights reserved.          */
   2
   3 /* This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the license (GNU LGPL) which comes with this package. */
   5
   6 #include "simgrid/s4u.hpp"
   7 #include <cstdlib>
   8 #include <iostream>
   9 #include <string>
  10 namespace sg4 = simgrid::s4u;
  11
  12 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_activity_waittany, "Messages specific for this s4u example");
  13
  14 static void bob()
  15 {
  16   sg4::Mailbox* mbox    = sg4::Mailbox::by_name("mbox");
  17   const sg4::Disk* disk = sg4::Host::current()->get_disks().front();
  18   std::string* payload;
  19
  20   XBT_INFO("Create my asynchronous activities");
  21   auto exec = sg4::this_actor::exec_async(5e9);
  22   auto comm = mbox->get_async(&payload);
  23   auto io   = disk->read_async(3e8);
  24
  25   sg4::ActivitySet pending_activities({boost::dynamic_pointer_cast<sg4::Activity>(exec),
  26                                        boost::dynamic_pointer_cast<sg4::Activity>(comm),
  27                                        boost::dynamic_pointer_cast<sg4::Activity>(io)});
  28
  29   XBT_INFO("Wait for asynchrounous activities to complete");
  30   while (not pending_activities.empty()) {
  31     auto completed_one = pending_activities.wait_any();
  32     if (completed_one != nullptr) {
  33       if (boost::dynamic_pointer_cast<sg4::Comm>(completed_one))
  34         XBT_INFO("Completed a Comm");
  35       if (boost::dynamic_pointer_cast<sg4::Exec>(completed_one))
  36         XBT_INFO("Completed an Exec");
  37       if (boost::dynamic_pointer_cast<sg4::Io>(completed_one))
  38         XBT_INFO("Completed an I/O");
  39     }
  40   }
  41   XBT_INFO("Last activity is complete");
  42   delete payload;
  43 }
  44
  45 static void alice()
  46 {
  47   auto* payload = new std::string("Message");
  48   XBT_INFO("Send '%s'", payload->c_str());
  49   sg4::Mailbox::by_name("mbox")->put(payload, 6e8);
  50 }
  51
  52 int main(int argc, char* argv[])
  53 {
  54   sg4::Engine e(&argc, argv);
  55
  56   e.load_platform(argv[1]);
  57
  58   sg4::Actor::create("bob", e.host_by_name("bob"), bob);
  59   sg4::Actor::create("alice", e.host_by_name("alice"), alice);
  60
  61   e.run();
  62
  63   return 0;
  64 }