teshsuite/s4u/actor-suspend/actor-suspend.cpp

   1 /* Copyright (c) 2020-2023. 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 // This is the MWE of https://framagit.org/simgrid/simgrid/-/issues/50
   7 // The problem was occurring when suspending an actor that will be executed later in the same scheduling round
   8
   9 #include <cstdio>
  10 #include <cstdlib>
  11 #include <iostream>
  12 #include <simgrid/s4u.hpp>
  13 #include <vector>
  14
  15 XBT_LOG_NEW_DEFAULT_CATEGORY(mwe, "Minimum Working Example");
  16
  17 class Receiver {
  18 public:
  19   void operator()() const
  20   {
  21     XBT_INFO("Starting.");
  22     auto mailbox = simgrid::s4u::Mailbox::by_name("receiver");
  23     int data     = *mailbox->get<int>();
  24     XBT_INFO("Got %d at the end", data);
  25   }
  26 };
  27
  28 class Suspender {
  29   const simgrid::s4u::ActorPtr& receiver;
  30
  31 public:
  32   explicit Suspender(const simgrid::s4u::ActorPtr& receiver) : receiver(receiver) {}
  33
  34   void operator()() const
  35   {
  36     XBT_INFO("Suspend the receiver...");
  37     receiver->suspend();
  38     XBT_INFO("Resume the receiver...");
  39     receiver->resume();
  40
  41     XBT_INFO("Sleeping 10 sec...");
  42     simgrid::s4u::this_actor::sleep_for(10);
  43
  44     XBT_INFO("Sending a message to the receiver...");
  45     auto mailbox = simgrid::s4u::Mailbox::by_name("receiver");
  46     static int data = 42;
  47     mailbox->put(&data, 4);
  48
  49     XBT_INFO("Done!");
  50   }
  51 };
  52
  53 int main(int argc, char** argv)
  54 {
  55   simgrid::s4u::Engine engine(&argc, argv);
  56
  57   engine.load_platform(argv[1]);
  58   simgrid::s4u::Host* host = engine.host_by_name("Tremblay");
  59
  60   simgrid::s4u::ActorPtr receiver;
  61   simgrid::s4u::Actor::create("Suspender", host, Suspender(receiver));
  62   receiver = simgrid::s4u::Actor::create("Receiver", host, Receiver());
  63
  64   engine.run();
  65
  66   return 0;
  67 }