#ifndef __MODEL_H__
#define __MODEL_H__
-#include <list>
#include <vector>
#include <cstddef>
#include <ucontext.h>
};
struct PendingFutureValue {
- ModelAction *writer;
+ PendingFutureValue(ModelAction *writer, ModelAction *act) : writer(writer), act(act) { }
+ const ModelAction *writer;
ModelAction *act;
};
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 */
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);
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;
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 mo_check_promises(thread_id_t tid, const ModelAction *write, const ModelAction * read);
+ 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;
-
- void set_bad_synchronization();
-
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 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);
+ void add_future_value(const ModelAction *writer, ModelAction *reader);
+
+ ModelAction * new_uninitialized_action(void *location) const;
ModelAction *diverge;
ModelAction *earliest_diverge;
std::vector< struct release_seq *, SnapshotAlloc<struct release_seq *> > *pending_rel_seqs;
std::vector< ModelAction *, SnapshotAlloc<ModelAction *> > *thrd_last_action;
+ std::vector< ModelAction *, SnapshotAlloc<ModelAction *> > *thrd_last_fence_release;
NodeStack *node_stack;
/** Private data members that should be snapshotted. They are grouped
struct execution_stats stats;
void record_stats();
+ void print_infeasibility(const char *prefix) const;
+ bool is_feasible_prefix_ignore_relseq() 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;
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