threads: prepare system to loop over many executions

[model-checker.git] / model.h

diff --git a/model.h b/model.h
index a347350acea1b7aadc65e6eb78e2938107e4e181..ccaeda21aaa29b9b4ab9919cc3947ebcef9a36fd 100644 (file)
--- a/model.h
+++ b/model.h
@@ -3,6 +3,7 @@
 
 #include <list>
 #include <map>
+#include <cstddef>
 
 #include "schedule.h"
 #include "libthreads.h"
@@ -43,6 +44,26 @@ private:
        TreeNode *node;
 };
 
+class Backtrack {
+public:
+       Backtrack(ModelAction *d, action_list_t *t) {
+               diverge = d;
+               actionTrace = t;
+               iter = actionTrace->begin();
+       }
+       ModelAction *get_diverge() { return diverge; }
+       action_list_t *get_trace() { return actionTrace; }
+       void advance_state() { iter++; }
+       ModelAction *get_state() {
+               return iter == actionTrace->end() ? NULL : *iter;
+       }
+private:
+       ModelAction *diverge;
+       action_list_t *actionTrace;
+       /* points to position in actionTrace as we replay */
+       action_list_t::iterator iter;
+};
+
 class ModelChecker {
 public:
        ModelChecker();
@@ -53,10 +74,9 @@ public:
        void add_system_thread(Thread *t);
 
        void set_current_action(ModelAction *act) { current_action = act; }
-       ModelAction *get_last_conflict(ModelAction *act);
        void check_current_action(void);
-       void set_backtracking(ModelAction *act);
        void print_trace(void);
+       Thread *schedule_next_thread();
 
        int add_thread(Thread *t);
        Thread *get_thread(thread_id_t tid) { return thread_map[tid]; }
@@ -64,12 +84,24 @@ public:
        void assign_id(Thread *t);
 
        int switch_to_master(ModelAction *act);
+
+       bool next_execution();
 private:
        int used_thread_id;
+
+       ModelAction *get_last_conflict(ModelAction *act);
+       void set_backtracking(ModelAction *act);
+       thread_id_t advance_backtracking_state();
+       thread_id_t get_next_replay_thread();
+
        class ModelAction *current_action;
+       Backtrack *exploring;
+       thread_id_t nextThread;
+
        action_list_t *action_trace;
        std::map<thread_id_t, class Thread *> thread_map;
        class TreeNode *rootNode, *currentNode;
+       std::list<class Backtrack *> backtrack_list;
 };
 
 extern ModelChecker *model;