+ HashTable<const void *, action_list_t, uintptr_t, 4> *obj_map;
+
+ /** Per-object list of actions. Maps an object (i.e., memory location)
+ * to a trace of all actions performed on the object. */
+ HashTable<const void *, action_list_t, uintptr_t, 4> *lock_waiters_map;
+
+ HashTable<void *, std::vector<action_list_t>, uintptr_t, 4 > *obj_thrd_map;
+ std::vector<Promise *> *promises;
+ std::vector<struct PendingFutureValue> *futurevalues;
+
+ /**
+ * List of acquire actions that might synchronize with one or more
+ * release sequence. Release sequences might be determined lazily as
+ * promises are fulfilled and modification orders are established. Each
+ * ModelAction in this list must be an acquire operation.
+ */
+ std::vector<ModelAction *> *pending_acq_rel_seq;