Add a test for callback disconnection

[simgrid.git] / teshsuite / xbt / signals / signals.cpp

diff --git a/teshsuite/xbt/signals/signals.cpp b/teshsuite/xbt/signals/signals.cpp
new file mode 100644 (file)
index 0000000..4668527
--- /dev/null
+++ b/teshsuite/xbt/signals/signals.cpp
@@ -0,0 +1,51 @@
+/* Copyright (c) 2010-2019. The SimGrid Team. All rights reserved.          */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "simgrid/s4u.hpp"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_test, "Messages specific for this s4u example");
+
+static void worker()
+{
+  simgrid::s4u::Host* other_host = simgrid::s4u::Host::by_name("Fafard");
+  unsigned int first =
+      simgrid::s4u::Host::on_state_change.connect([](simgrid::s4u::Host const&) { XBT_INFO("First callback"); });
+  unsigned int second =
+      simgrid::s4u::Host::on_state_change.connect([](simgrid::s4u::Host const&) { XBT_INFO("Second callback"); });
+  unsigned int third =
+      simgrid::s4u::Host::on_state_change.connect([](simgrid::s4u::Host const&) { XBT_INFO("Third callback"); });
+
+  XBT_INFO("Turning off: Three callbacks should be triggered");
+  other_host->turn_off();
+
+  XBT_INFO("Disconnect the second callback");
+  simgrid::s4u::Host::on_state_change.disconnect(second);
+
+  XBT_INFO("Turning on: Two callbacks should be triggered");
+  other_host->turn_on();
+
+  XBT_INFO("Disconnect the first callback");
+  simgrid::s4u::Host::on_state_change.disconnect(first);
+
+  XBT_INFO("Turning off: One callback should be triggered");
+  other_host->turn_off();
+
+  XBT_INFO("Disconnect the third callback");
+  simgrid::s4u::Host::on_state_change.disconnect(third);
+  XBT_INFO("Turning on: No more callbacks");
+  other_host->turn_on();
+}
+
+int main(int argc, char* argv[])
+{
+  simgrid::s4u::Engine e(&argc, argv);
+  e.load_platform(argv[1]);
+
+  simgrid::s4u::Actor::create("worker", simgrid::s4u::Host::by_name("Tremblay"), worker);
+
+  e.run();
+
+  return 0;
+}