X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=model.h;h=783f7a6623df79d89d9611214393098e95484a9a;hb=dbee0c57f6edff31aafb79d6e956f1408bbb8fb8;hp=4fd2667753f4b3ae85698c6422921a1cf18163f7;hpb=b410cb21b726638c0618e1a0b420374a707fb64b;p=model-checker.git diff --git a/model.h b/model.h index 4fd2667..783f7a6 100644 --- a/model.h +++ b/model.h @@ -8,25 +8,29 @@ #include #include #include +#include #include "mymemory.h" -#include "action.h" #include "hashtable.h" #include "workqueue.h" #include "config.h" #include "modeltypes.h" /* Forward declaration */ +class Node; class NodeStack; class CycleGraph; class Promise; class Scheduler; class Thread; +class ClockVector; struct model_snapshot_members; /** @brief Shorthand for a list of release sequence heads */ typedef std::vector< const ModelAction *, ModelAlloc > rel_heads_list_t; +typedef std::list< ModelAction *, SnapshotAlloc > action_list_t; + /** * Model checker parameter structure. Holds run-time configuration options for * the model checker. @@ -108,7 +112,7 @@ public: void add_thread(Thread *t); void remove_thread(Thread *t); Thread * get_thread(thread_id_t tid) const; - Thread * get_thread(ModelAction *act) const; + Thread * get_thread(const ModelAction *act) const; bool is_enabled(Thread *t) const; bool is_enabled(thread_id_t tid) const; @@ -117,11 +121,11 @@ public: unsigned int get_num_threads() const; Thread * get_current_thread() const; + void switch_from_master(Thread *thread); 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); bool isfeasibleprefix() const; @@ -134,7 +138,7 @@ public: MEMALLOC private: /** The scheduler to use: tracks the running/ready Threads */ - Scheduler *scheduler; + Scheduler * const scheduler; bool sleep_can_read_from(ModelAction *curr, const ModelAction *write); bool thin_air_constraint_may_allow(const ModelAction *writer, const ModelAction *reader); @@ -144,11 +148,11 @@ private: void set_bad_synchronization(); bool promises_expired() const; void execute_sleep_set(); + bool should_wake_up(const ModelAction *curr, const Thread *thread) const; void wake_up_sleeping_actions(ModelAction *curr); modelclock_t get_next_seq_num(); bool next_execution(); - void set_current_action(ModelAction *act); ModelAction * check_current_action(ModelAction *curr); bool initialize_curr_action(ModelAction **curr); bool process_read(ModelAction *curr, bool second_part_of_rmw); @@ -160,10 +164,11 @@ private: bool read_from(ModelAction *act, const ModelAction *rf); bool check_action_enabled(ModelAction *curr); - bool take_step(ModelAction *curr); + Thread * take_step(ModelAction *curr); void check_recency(ModelAction *curr, const ModelAction *rf); - ModelAction * get_last_conflict(ModelAction *act); + ModelAction * get_last_fence_conflict(ModelAction *act) const; + ModelAction * get_last_conflict(ModelAction *act) const; void set_backtracking(ModelAction *act); Thread * get_next_thread(ModelAction *curr); bool set_latest_backtrack(ModelAction *act); @@ -173,6 +178,9 @@ private: void compute_promises(ModelAction *curr); void compute_relseq_breakwrites(ModelAction *curr); + void mo_check_promises(const ModelAction *act, bool is_read_check); + void thread_blocking_check_promises(Thread *blocker, Thread *waiting); + void check_curr_backtracking(ModelAction *curr); void add_action_to_lists(ModelAction *act); ModelAction * get_last_action(thread_id_t tid) const; @@ -180,10 +188,12 @@ private: 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); + void build_may_read_from(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); + + template + bool r_modification_order(ModelAction *curr, const rf_type *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; @@ -196,24 +206,24 @@ private: ModelAction *earliest_diverge; ucontext_t system_context; - action_list_t *action_trace; - HashTable *thread_map; + action_list_t * const action_trace; + HashTable * const thread_map; /** Per-object list of actions. Maps an object (i.e., memory location) * to a trace of all actions performed on the object. */ - HashTable *obj_map; + HashTable * const obj_map; /** Per-object list of actions. Maps an object (i.e., memory location) * to a trace of all actions performed on the object. */ - HashTable *lock_waiters_map; + HashTable * const lock_waiters_map; /** Per-object list of actions. Maps an object (i.e., memory location) * to a trace of all actions performed on the object. */ - HashTable *condvar_waiters_map; + HashTable * const condvar_waiters_map; - HashTable *, uintptr_t, 4 > *obj_thrd_map; - std::vector< Promise *, SnapshotAlloc > *promises; - std::vector< struct PendingFutureValue, SnapshotAlloc > *futurevalues; + HashTable *, uintptr_t, 4 > * const obj_thrd_map; + std::vector< Promise *, SnapshotAlloc > * const promises; + std::vector< struct PendingFutureValue, SnapshotAlloc > * const futurevalues; /** * List of pending release sequences. Release sequences might be @@ -221,15 +231,15 @@ private: * are established. Each entry in the list may only be partially * filled, depending on its pending status. */ - std::vector< struct release_seq *, SnapshotAlloc > *pending_rel_seqs; + std::vector< struct release_seq *, SnapshotAlloc > * const pending_rel_seqs; - std::vector< ModelAction *, SnapshotAlloc > *thrd_last_action; - std::vector< ModelAction *, SnapshotAlloc > *thrd_last_fence_release; - NodeStack *node_stack; + std::vector< ModelAction *, SnapshotAlloc > * const thrd_last_action; + std::vector< ModelAction *, SnapshotAlloc > * const thrd_last_fence_release; + NodeStack * const node_stack; /** Private data members that should be snapshotted. They are grouped * together for efficiency and maintainability. */ - struct model_snapshot_members *priv; + struct model_snapshot_members * const priv; /** A special model-checker Thread; used for associating with * model-checker-related ModelAcitons */ @@ -249,14 +259,14 @@ private: * such that a --> b means a was ordered before * b. */ - CycleGraph *mo_graph; + CycleGraph * const mo_graph; /** @brief The cumulative execution stats */ struct execution_stats stats; void record_stats(); + void print_infeasibility(const char *prefix) const; 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;