add yield support

[cdsspec-compiler.git] / nodestack.h

diff --git a/nodestack.h b/nodestack.h
index a857084ba1fe8676b0b2c5b8e57fc8a873a77bc0..0a9422572eb0c4bd3ae6ce18b96757c57281a29f 100644 (file)
--- a/nodestack.h
+++ b/nodestack.h
@@ -16,22 +16,6 @@
 class ModelAction;
 class Thread;
 
-/**
- * A flag used for the promise counting/combination problem within a node,
- * denoting whether a particular Promise is
- * <ol><li>@b applicable: can be satisfied by this Node's ModelAction and</li>
- * <li>@b fulfilled: satisfied by this Node's ModelAction under the current
- * configuration.</li></ol>
- */
-
-#define        PROMISE_IGNORE 0 /**< This promise is inapplicable; ignore it */
-#define        PROMISE_UNFULFILLED 1 /**< This promise is applicable but unfulfilled */
-#define        PROMISE_FULFILLED 2 /**< This promise is applicable and fulfilled */
-#define PROMISE_MASK 0xf
-#define PROMISE_RMW 0x10
-
-typedef int promise_t;
-
 struct fairness_info {
        unsigned int enabled_count;
        unsigned int turns;
@@ -40,10 +24,18 @@ struct fairness_info {
 
 typedef enum {
        READ_FROM_PAST,
+       READ_FROM_PROMISE,
        READ_FROM_FUTURE,
        READ_FROM_NONE,
 } read_from_type_t;
 
+#define YIELD_E 1
+#define YIELD_D 2
+#define YIELD_S 4
+#define YIELD_P 8
+#define YIELD_INDEX(tid1, tid2, num_threads) (tid1*num_threads+tid2)
+
+
 /**
  * @brief A single node in a NodeStack
  *
@@ -73,6 +65,8 @@ public:
 
        ModelAction * get_action() const { return action; }
        bool has_priority(thread_id_t tid) const;
+       void update_yield(Scheduler *);
+       bool has_priority_over(thread_id_t tid, thread_id_t tid2) const;
        int get_num_threads() const { return num_threads; }
        /** @return the parent Node to this Node; that is, the action that
         * occurred previously in the stack. */
@@ -89,13 +83,20 @@ 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);
+       Promise * get_read_from_promise() const;
+       Promise * get_read_from_promise(int i) const;
+       int get_read_from_promise_size() const;
+
        bool add_future_value(struct future_value fv);
        struct future_value get_future_value() const;
 
-       void set_promise(unsigned int i, bool is_rmw);
+       void set_promise(unsigned int i);
        bool get_promise(unsigned int i) const;
        bool increment_promise();
        bool promise_empty() const;
+       void clear_promise_resolutions();
+
        enabled_type_t *get_enabled_array() {return enabled_array;}
 
        void set_misc_max(int i);
@@ -113,9 +114,11 @@ public:
        MEMALLOC
 private:
        void explore(thread_id_t tid);
-
+       int get_yield_data(int tid1, int tid2) const;
        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;
@@ -136,15 +139,21 @@ 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;
 
+       std::vector< bool, ModelAlloc<bool> > resolve_promise;
+       int resolve_promise_idx;
+
        std::vector< const ModelAction *, ModelAlloc<const ModelAction *> > relseq_break_writes;
        int relseq_break_index;
 
        int misc_index;
        int misc_max;
+       int * yield_data;
 };
 
 typedef std::vector< Node *, ModelAlloc< Node * > > node_list_t;