-/* An exploration state.
- *
- * The `executed_state` is sometimes transformed into another `internal_req`.
- * For example WAITANY is transformes into a WAIT and TESTANY into TEST.
- * See `MC_state_set_executed_request()`.
+};
+
+/* On every state, each process has an entry of the following type.
+ * This represents both the process and its transition because
+ * a process cannot have more than one enabled transition at a given time.
+ */
+class ProcessState {
+ /* Possible exploration status of a process transition in a state.
+ * Either the checker did not consider the transition, or it was considered and to do, or considered and done.
+ */
+ enum class InterleavingType {
+ /** This process transition is not considered by the checker (yet?) */
+ disabled = 0,
+ /** The checker algorithm decided that this process transitions should be done at some point */
+ todo,
+ /** The checker algorithm decided that this should be done, but it was done in the meanwhile */
+ done,
+ };
+
+ /** Exploration control information */
+ InterleavingType state = InterleavingType::disabled;
+public:
+ /** Number of times that the process was considered to be executed */
+ // TODO, make this private
+ unsigned int times_considered = 0;
+
+ bool isDisabled() const {
+ return this->state == InterleavingType::disabled;
+ }
+ bool isDone() const {
+ return this->state == InterleavingType::done;
+ }
+ bool isTodo() const {
+ return this->state == InterleavingType::todo;
+ }
+ /** Mark that we should try executing this process at some point in the future of the checker algorithm */
+ void consider() {
+ this->state = InterleavingType::todo;
+ this->times_considered = 0;
+ }
+ void setDone() {
+ this->state = InterleavingType::done;
+ }
+};
+
+/* A node in the exploration graph (kind-of)