2 * @brief Core model checker.
12 #include "hashtable.h"
14 #include "modeltypes.h"
15 #include "stl-model.h"
22 /* Forward declaration */
34 typedef SnapList<ModelAction *> action_list_t;
36 /** @brief Model checker execution stats */
37 struct execution_stats {
38 int num_total; /**< @brief Total number of executions */
39 int num_infeasible; /**< @brief Number of infeasible executions */
40 int num_buggy_executions; /** @brief Number of buggy executions */
41 int num_complete; /**< @brief Number of feasible, non-buggy, complete executions */
42 int num_redundant; /**< @brief Number of redundant, aborted executions */
45 /** @brief The central structure for model-checking */
48 ModelChecker(struct model_params params);
53 /** Restart the model checker, intended for pluggins. */
56 /** Exit the model checker, intended for pluggins. */
57 void exit_model_checker();
59 /** Check the exit_flag. */
60 bool get_exit_flag() const { return exit_flag; }
62 /** @returns the context for the main model-checking system thread */
63 ucontext_t * get_system_context() { return &system_context; }
65 ModelExecution * get_execution() const { return execution; }
67 int get_execution_number() const { return execution_number; }
69 Thread * get_thread(thread_id_t tid) const;
70 Thread * get_thread(const ModelAction *act) const;
72 Thread * get_current_thread() const;
74 void switch_from_master(Thread *thread);
75 uint64_t switch_to_master(ModelAction *act);
77 bool assert_bug(const char *msg, ...);
78 void assert_user_bug(const char *msg);
80 const model_params params;
81 void add_trace_analysis(TraceAnalysis *a) { trace_analyses.push_back(a); }
82 void set_inspect_plugin(TraceAnalysis *a) { inspect_plugin=a; }
84 std::map<pthread_t, ModelAction*> pthread_map;
85 std::map<pthread_mutex_t *, std::mutex*> mutex_map;
87 /** Flag indicates whether to restart the model checker. */
89 /** Flag indicates whether to exit the model checker. */
92 /** The scheduler to use: tracks the running/ready Threads */
93 Scheduler * const scheduler;
94 NodeStack * const node_stack;
95 ModelExecution *execution;
99 unsigned int get_num_threads() const;
101 void execute_sleep_set();
103 bool next_execution();
104 bool should_terminate_execution();
106 Thread * get_next_thread();
107 void reset_to_initial_state();
110 ModelAction *diverge;
111 ModelAction *earliest_diverge;
113 ucontext_t system_context;
115 ModelVector<TraceAnalysis *> trace_analyses;
117 /** @bref Implement restart. */
119 /** @bref Plugin that can inspect new actions. */
120 TraceAnalysis *inspect_plugin;
121 /** @brief The cumulative execution stats */
122 struct execution_stats stats;
124 void run_trace_analyses();
125 void print_bugs() const;
126 void print_execution(bool printbugs) const;
127 void print_stats() const;
129 friend void user_main_wrapper();
132 extern ModelChecker *model;
134 #endif /* __MODEL_H__ */