model: group snapshottable ModelChecker members in struct

[model-checker.git] / model.h

diff --git a/model.h b/model.h
index 74e3b068c39f356570daf491c3715865a1382d38..9762eb0c40ef26c5efc92887c6f4f18864e620a0 100644 (file)
--- a/model.h
+++ b/model.h
@@ -30,6 +30,17 @@ class Promise;
 struct model_params {
 };
 
+/**
+ * Structure for holding small ModelChecker members that should be snapshotted
+ */
+struct model_snapshot_members {
+       ModelAction *current_action;
+       int next_thread_id;
+       modelclock_t used_sequence_numbers;
+       Thread *nextThread;
+       ModelAction *next_backtrack;
+};
+
 /** @brief The central structure for model-checking */
 class ModelChecker {
 public:
@@ -74,8 +85,6 @@ private:
 
        bool has_asserted() {return asserted;}
        void reset_asserted() {asserted=false;}
-       int next_thread_id;
-       modelclock_t used_sequence_numbers;
        int num_executions;
 
        const model_params params;
@@ -86,7 +95,7 @@ private:
         * data between them.
         * @param act The ModelAction created by the user-thread action
         */
-       void set_current_action(ModelAction *act) { current_action = act; }
+       void set_current_action(ModelAction *act) { priv->current_action = act; }
        Thread * check_current_action(ModelAction *curr);
 
        bool take_step();
@@ -111,9 +120,7 @@ private:
                        std::vector<const ModelAction *> *release_heads) const;
        bool resolve_release_sequences(void *location);
 
-       ModelAction *current_action;
        ModelAction *diverge;
-       Thread *nextThread;
 
        ucontext_t system_context;
        action_list_t *action_trace;
@@ -137,7 +144,10 @@ private:
 
        std::vector<ModelAction *> *thrd_last_action;
        NodeStack *node_stack;
-       ModelAction *next_backtrack;
+
+       /** Private data members that should be snapshotted. They are grouped
+        * together for efficiency and maintainability. */
+       struct model_snapshot_members *priv;
 
        /**
         * @brief The modification order graph