2 * @brief Core model checker.
15 #include "libthreads.h"
18 #include "clockvector.h"
20 /* Forward declaration */
24 /** @brief The central structure for model-checking */
30 /** The scheduler to use: tracks the running/ready Threads */
33 /** Stores the context for the main model-checking system thread (call
35 * @param ctxt The system context structure
37 void set_system_context(ucontext_t *ctxt) { system_context = ctxt; }
39 /** @returns the context for the main model-checking system thread */
40 ucontext_t * get_system_context(void) { return system_context; }
42 void check_current_action(void);
43 void print_summary(void);
44 Thread * schedule_next_thread();
46 int add_thread(Thread *t);
47 void remove_thread(Thread *t);
48 Thread * get_thread(thread_id_t tid) { return thread_map->get(id_to_int(tid)); }
50 thread_id_t get_next_id();
51 int get_num_threads();
52 modelclock_t get_next_seq_num();
54 int switch_to_master(ModelAction *act);
55 ClockVector * get_cv(thread_id_t tid);
56 bool next_execution();
62 modelclock_t used_sequence_numbers;
66 * Stores the ModelAction for the current thread action. Call this
67 * immediately before switching from user- to system-context to pass
69 * @param act The ModelAction created by the user-thread action
71 void set_current_action(ModelAction *act) { current_action = act; }
73 ModelAction * get_last_conflict(ModelAction *act);
74 void set_backtracking(ModelAction *act);
75 thread_id_t get_next_replay_thread();
76 ModelAction * get_next_backtrack();
77 void reset_to_initial_state();
79 void add_action_to_lists(ModelAction *act);
80 ModelAction * get_last_action(thread_id_t tid);
81 ModelAction * get_parent_action(thread_id_t tid);
82 ModelAction * get_last_seq_cst(const void *location);
83 void build_reads_from_past(ModelAction *curr);
84 ModelAction * process_rmw(ModelAction * curr);
85 void r_modification_order(ModelAction * curr, const ModelAction *rf);
86 void w_modification_order(ModelAction * curr);
89 ModelAction *current_action;
91 thread_id_t nextThread;
93 ucontext_t *system_context;
94 action_list_t *action_trace;
95 HashTable<int, Thread *, int> *thread_map;
97 /** Per-object list of actions. Maps an object (i.e., memory location)
98 * to a trace of all actions performed on the object. */
99 HashTable<const void *, action_list_t, uintptr_t, 4> *obj_map;
101 HashTable<void *, std::vector<action_list_t>, uintptr_t, 4 > *obj_thrd_map;
102 std::vector<ModelAction *> *thrd_last_action;
103 NodeStack *node_stack;
104 ModelAction *next_backtrack;
105 CycleGraph * cyclegraph;
108 extern ModelChecker *model;
110 #endif /* __MODEL_H__ */