X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=model.h;h=c97cbf1a05f905fb79087c21b91401548b5ecf2e;hb=d70f6f259c9850e5fceb527e3a9541c440c0146b;hp=f92c8bdf75679b1cd8b9c0915f210e1d6f667b23;hpb=f87fd6394adc4f85b8f3ff1d0695fd6ea2093e4e;p=model-checker.git diff --git a/model.h b/model.h index f92c8bd..c97cbf1 100644 --- a/model.h +++ b/model.h @@ -5,7 +5,6 @@ #ifndef __MODEL_H__ #define __MODEL_H__ -#include #include #include #include @@ -50,6 +49,12 @@ struct model_params { /** @brief Verbosity (0 = quiet; 1 = noisy) */ int verbose; + + /** @brief Command-line argument count to pass to user program */ + int argc; + + /** @brief Command-line arguments to pass to user program */ + char **argv; }; /** @brief Model checker execution stats */ @@ -70,7 +75,11 @@ struct PendingFutureValue { struct release_seq { /** @brief The acquire operation */ ModelAction *acquire; - /** @brief The head of the RMW chain from which 'acquire' reads; may be + /** @brief The read operation that may read from a release sequence; + * may be the same as acquire, or else an earlier action in the same + * thread (i.e., when 'acquire' is a fence-acquire) */ + const ModelAction *read; + /** @brief The head of the RMW chain from which 'read' reads; may be * equal to 'release' */ const ModelAction *rf; /** @brief The head of the potential longest release sequence chain */ @@ -85,12 +94,14 @@ public: ModelChecker(struct model_params params); ~ModelChecker(); + void run(); + /** @returns the context for the main model-checking system thread */ ucontext_t * get_system_context() { return &system_context; } void print_summary() const; #if SUPPORT_MOD_ORDER_DUMP - void dumpGraph(char *filename); + void dumpGraph(char *filename) const; #endif void add_thread(Thread *t); @@ -103,87 +114,82 @@ public: thread_id_t get_next_id(); unsigned int get_num_threads() const; - Thread * get_current_thread(); + Thread * get_current_thread() const; - int switch_to_master(ModelAction *act); - ClockVector * get_cv(thread_id_t tid); - ModelAction * get_parent_action(thread_id_t tid); - bool next_execution(); - bool isfeasible() const; - bool isfeasibleotherthanRMW() const; - bool isfinalfeasible() const; + uint64_t switch_to_master(ModelAction *act); + ClockVector * get_cv(thread_id_t tid) const; + ModelAction * get_parent_action(thread_id_t tid) const; void check_promises_thread_disabled(); void mo_check_promises(thread_id_t tid, const ModelAction *write); - void check_promises(thread_id_t tid, ClockVector *old_cv, ClockVector * merge_cv); - void get_release_seq_heads(ModelAction *act, rel_heads_list_t *release_heads); - void finish_execution(); + void check_promises(thread_id_t tid, ClockVector *old_cv, ClockVector *merge_cv); bool isfeasibleprefix() const; bool assert_bug(const char *msg); void assert_user_bug(const char *msg); - bool is_deadlocked() const; - bool is_complete_execution() const; - void print_stats() const; - - /** @brief Alert the model-checker that an incorrectly-ordered - * synchronization was made */ - void set_bad_synchronization() { bad_synchronization = true; } - const model_params params; - Node * get_curr_node(); + Node * get_curr_node() const; MEMALLOC private: /** The scheduler to use: tracks the running/ready Threads */ Scheduler *scheduler; - bool sleep_can_read_from(ModelAction * curr, const ModelAction *write); - bool thin_air_constraint_may_allow(const ModelAction * writer, const ModelAction *reader); - bool mo_may_allow(const ModelAction * writer, const ModelAction *reader); - bool has_asserted() {return asserted;} - void reset_asserted() { asserted = false; } - void set_assert() { asserted = true; } + bool sleep_can_read_from(ModelAction *curr, const ModelAction *write); + bool thin_air_constraint_may_allow(const ModelAction *writer, const ModelAction *reader); + bool mo_may_allow(const ModelAction *writer, const ModelAction *reader); + bool has_asserted() const; + void set_assert(); + void set_bad_synchronization(); bool promises_expired() const; void execute_sleep_set(); - void wake_up_sleeping_actions(ModelAction * curr); + void wake_up_sleeping_actions(ModelAction *curr); modelclock_t get_next_seq_num(); + bool next_execution(); void set_current_action(ModelAction *act); - Thread * check_current_action(ModelAction *curr); + ModelAction * check_current_action(ModelAction *curr); bool initialize_curr_action(ModelAction **curr); bool process_read(ModelAction *curr, bool second_part_of_rmw); bool process_write(ModelAction *curr); + bool process_fence(ModelAction *curr); bool process_mutex(ModelAction *curr); bool process_thread_action(ModelAction *curr); void process_relseq_fixup(ModelAction *curr, work_queue_t *work_queue); + bool read_from(ModelAction *act, const ModelAction *rf); bool check_action_enabled(ModelAction *curr); - bool take_step(); + bool take_step(ModelAction *curr); void check_recency(ModelAction *curr, const ModelAction *rf); ModelAction * get_last_conflict(ModelAction *act); void set_backtracking(ModelAction *act); Thread * get_next_thread(ModelAction *curr); + bool set_latest_backtrack(ModelAction *act); ModelAction * get_next_backtrack(); void reset_to_initial_state(); bool resolve_promises(ModelAction *curr); void compute_promises(ModelAction *curr); void compute_relseq_breakwrites(ModelAction *curr); - void check_curr_backtracking(ModelAction * curr); + void check_curr_backtracking(ModelAction *curr); void add_action_to_lists(ModelAction *act); ModelAction * get_last_action(thread_id_t tid) const; - ModelAction * get_last_seq_cst(ModelAction *curr) const; + ModelAction * get_last_fence_release(thread_id_t tid) const; + ModelAction * get_last_seq_cst_write(ModelAction *curr) const; + ModelAction * get_last_seq_cst_fence(thread_id_t tid, const ModelAction *before_fence) const; ModelAction * get_last_unlock(ModelAction *curr) const; void build_reads_from_past(ModelAction *curr); ModelAction * process_rmw(ModelAction *curr); void post_r_modification_order(ModelAction *curr, const ModelAction *rf); bool r_modification_order(ModelAction *curr, const ModelAction *rf); bool w_modification_order(ModelAction *curr); + void get_release_seq_heads(ModelAction *acquire, ModelAction *read, rel_heads_list_t *release_heads); bool release_seq_heads(const ModelAction *rf, rel_heads_list_t *release_heads, struct release_seq *pending) const; bool resolve_release_sequences(void *location, work_queue_t *work_queue); + ModelAction * new_uninitialized_action(void *location) const; + ModelAction *diverge; ModelAction *earliest_diverge; @@ -216,6 +222,7 @@ private: std::vector< struct release_seq *, SnapshotAlloc > *pending_rel_seqs; std::vector< ModelAction *, SnapshotAlloc > *thrd_last_action; + std::vector< ModelAction *, SnapshotAlloc > *thrd_last_fence_release; NodeStack *node_stack; /** Private data members that should be snapshotted. They are grouped @@ -241,19 +248,22 @@ private: * b. */ CycleGraph *mo_graph; - bool failed_promise; - bool too_many_reads; - bool asserted; - /** @brief Incorrectly-ordered synchronization was made */ - bool bad_synchronization; /** @brief The cumulative execution stats */ struct execution_stats stats; void record_stats(); + bool is_feasible_prefix_ignore_relseq() const; + bool is_infeasible_ignoreRMW() const; + bool is_infeasible() const; + bool is_deadlocked() const; + bool is_complete_execution() const; bool have_bug_reports() const; void print_bugs() const; void print_execution(bool printbugs) const; + void print_stats() const; + + friend void user_main_wrapper(); }; extern ModelChecker *model;