1 /* Copyright (c) 2017. The SimGrid Team. All rights reserved. */
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. */
6 #include <simgrid/s4u.hpp>
7 #include <simgrid/s4u/Mutex.hpp>
9 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_actor_migration, "Messages specific for this s4u example");
11 simgrid::s4u::MutexPtr checkpoint = nullptr;
12 simgrid::s4u::ConditionVariablePtr identification = nullptr;
13 static simgrid::s4u::ActorPtr controlled_process = nullptr;
15 /* The Emigrant process will be moved from host to host. */
16 static void emigrant()
18 XBT_INFO("I'll look for a new job on another machine ('Boivin') where the grass is greener.");
19 simgrid::s4u::this_actor::migrate(
20 simgrid::s4u::Host::by_name("Boivin")); /* - First, move to another host by myself */
22 XBT_INFO("Yeah, found something to do");
23 simgrid::s4u::this_actor::execute(98095000);
24 simgrid::s4u::this_actor::sleep_for(2);
26 XBT_INFO("Moving back home after work");
27 simgrid::s4u::this_actor::migrate(simgrid::s4u::Host::by_name("Jacquelin")); /* - Move back to original location */
29 simgrid::s4u::this_actor::migrate(simgrid::s4u::Host::by_name("Boivin")); /* - Go back to the other host to sleep*/
30 simgrid::s4u::this_actor::sleep_for(4);
32 checkpoint->lock(); /* - Get controlled at checkpoint */
33 controlled_process = simgrid::s4u::Actor::self(); /* - and get moved back by the policeman process */
34 identification->notify_all();
37 simgrid::s4u::this_actor::suspend();
39 XBT_INFO("I've been moved on this new host: %s", simgrid::s4u::this_actor::getHost()->getCname());
40 XBT_INFO("Uh, nothing to do here. Stopping now");
43 /* The policeman check for emigrants and move them back to 'Jacquelin' */
44 static void policeman()
48 XBT_INFO("Wait at the checkpoint."); /* - block on the mutex+condition */
49 while (controlled_process == nullptr)
50 identification->wait(checkpoint);
52 controlled_process->migrate(simgrid::s4u::Host::by_name("Jacquelin")); /* - Move an emigrant to Jacquelin */
53 XBT_INFO("I moved the emigrant");
54 controlled_process->resume();
59 int main(int argc, char* argv[])
61 simgrid::s4u::Engine e(&argc, argv);
62 xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s msg_platform.xml\n", argv[0], argv[0]);
63 e.loadPlatform(argv[1]); /* - Load the platform description */
65 /* - Create and deploy the emigrant and policeman processes */
66 simgrid::s4u::Actor::createActor("emigrant", simgrid::s4u::Host::by_name("Jacquelin"), emigrant);
67 simgrid::s4u::Actor::createActor("policeman", simgrid::s4u::Host::by_name("Boivin"), policeman);
69 checkpoint = simgrid::s4u::Mutex::createMutex(); /* - Initiate the mutex and conditions */
70 identification = simgrid::s4u::ConditionVariable::createConditionVariable();
73 XBT_INFO("Simulation time %g", e.getClock());