2 * @brief Core model checker.
15 #include "libthreads.h"
18 #include "clockvector.h"
19 #include "hashtable.h"
21 /* Forward declaration */
26 /** @brief The central structure for model-checking */
32 /** The scheduler to use: tracks the running/ready Threads */
35 /** Stores the context for the main model-checking system thread (call
37 * @param ctxt The system context structure
39 void set_system_context(ucontext_t *ctxt) { system_context = ctxt; }
41 /** @returns the context for the main model-checking system thread */
42 ucontext_t * get_system_context(void) { return system_context; }
44 void check_current_action(void);
45 void print_summary(void);
46 Thread * schedule_next_thread();
48 int add_thread(Thread *t);
49 void remove_thread(Thread *t);
50 Thread * get_thread(thread_id_t tid) { return thread_map->get(id_to_int(tid)); }
52 thread_id_t get_next_id();
53 int get_num_threads();
54 modelclock_t get_next_seq_num();
56 int switch_to_master(ModelAction *act);
57 ClockVector * get_cv(thread_id_t tid);
58 bool next_execution();
60 bool isfinalfeasible();
61 void check_promises(ClockVector *old_cv, ClockVector * merge_cv);
66 modelclock_t used_sequence_numbers;
70 * Stores the ModelAction for the current thread action. Call this
71 * immediately before switching from user- to system-context to pass
73 * @param act The ModelAction created by the user-thread action
75 void set_current_action(ModelAction *act) { current_action = act; }
77 ModelAction * get_last_conflict(ModelAction *act);
78 void set_backtracking(ModelAction *act);
79 thread_id_t get_next_replay_thread();
80 ModelAction * get_next_backtrack();
81 void reset_to_initial_state();
82 void resolve_promises(ModelAction *curr);
83 void compute_promises(ModelAction *curr);
85 void add_action_to_lists(ModelAction *act);
86 ModelAction * get_last_action(thread_id_t tid);
87 ModelAction * get_parent_action(thread_id_t tid);
88 ModelAction * get_last_seq_cst(const void *location);
89 void build_reads_from_past(ModelAction *curr);
90 ModelAction * process_rmw(ModelAction * curr);
91 void r_modification_order(ModelAction * curr, const ModelAction *rf);
92 void w_modification_order(ModelAction * curr);
94 ModelAction *current_action;
96 thread_id_t nextThread;
98 ucontext_t *system_context;
99 action_list_t *action_trace;
100 HashTable<int, Thread *, int> *thread_map;
102 /** Per-object list of actions. Maps an object (i.e., memory location)
103 * to a trace of all actions performed on the object. */
104 HashTable<const void *, action_list_t, uintptr_t, 4> *obj_map;
106 HashTable<void *, std::vector<action_list_t>, uintptr_t, 4 > *obj_thrd_map;
107 std::vector<Promise *> * promises;
108 std::vector<ModelAction *> *thrd_last_action;
109 NodeStack *node_stack;
110 ModelAction *next_backtrack;
111 CycleGraph * cyclegraph;
115 extern ModelChecker *model;
117 #endif /* __MODEL_H__ */