nodestack: add read_from_promises backtracking

[model-checker.git] / nodestack.h

diff --git a/nodestack.h b/nodestack.h
index a857084ba1fe8676b0b2c5b8e57fc8a873a77bc0..8a20c45cb2c03e53bdeaf53ee8e80a89b3882014 100644 (file)
--- a/nodestack.h
+++ b/nodestack.h
@@ -40,6 +40,7 @@ struct fairness_info {
 
 typedef enum {
        READ_FROM_PAST,
+       READ_FROM_PROMISE,
        READ_FROM_FUTURE,
        READ_FROM_NONE,
 } read_from_type_t;
@@ -89,6 +90,9 @@ public:
        const ModelAction * get_read_from_past(int i) const;
        int get_read_from_past_size() const;
 
+       void add_read_from_promise(const ModelAction *reader);
+       const Promise * get_read_from_promise() const;
+
        bool add_future_value(struct future_value fv);
        struct future_value get_future_value() const;
 
@@ -116,6 +120,8 @@ private:
 
        bool read_from_past_empty() const;
        bool increment_read_from_past();
+       bool read_from_promise_empty() const;
+       bool increment_read_from_promise();
        bool future_value_empty() const;
        bool increment_future_value();
        read_from_type_t read_from_status;
@@ -136,6 +142,9 @@ private:
        std::vector< const ModelAction *, ModelAlloc< const ModelAction * > > read_from_past;
        unsigned int read_from_past_idx;
 
+       std::vector< const ModelAction *, ModelAlloc<const ModelAction *> > read_from_promises;
+       int read_from_promise_idx;
+
        std::vector< struct future_value, ModelAlloc<struct future_value> > future_values;
        std::vector< promise_t, ModelAlloc<promise_t> > promises;
        int future_index;