[mc] Rename RecordTraceElement as Transition and use it to represent a transition

[simgrid.git] / src / mc / Transition.hpp

diff --git a/src/mc/Transition.hpp b/src/mc/Transition.hpp
new file mode 100644 (file)
index 0000000..c0a6d0a
--- /dev/null
+++ b/src/mc/Transition.hpp
@@ -0,0 +1,38 @@
+/* Copyright (c) 2015-2016. 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. */
+
+#ifndef SIMGRID_MC_TRANSITION_HPP
+#define SIMGRID_MC_TRANSITION_HPP
+
+namespace simgrid {
+namespace mc {
+
+/** An element in the recorded path
+ *
+ *  At each decision point, we need to record which process transition
+ *  is trigerred and potentially which value is associated with this
+ *  transition. The value is used to find which communication is triggerred
+ *  in things like waitany and for associating a given value of MC_random()
+ *  calls.
+ */
+struct Transition {
+  int pid = 0;
+
+  /* Which transition was executed for this simcall
+   *
+   * Some simcalls can lead to different transitions:
+   *
+   * * waitany/testany can trigger on different messages;
+   *
+   * * random can produce different values.
+   */
+  int argument = 0;
+};
+
+}
+}
+
+#endif