/** @file model.h
- * @brief Core model checker.
+ * @brief Core model checker.
*/
#ifndef __MODEL_H__
#define __MODEL_H__
#include <list>
-#include <map>
#include <vector>
#include <cstddef>
#include <ucontext.h>
#include "schedule.h"
#include "mymemory.h"
-#include <utility>
#include "libthreads.h"
-#include "libatomic.h"
#include "threads.h"
#include "action.h"
#include "clockvector.h"
+#include "hashtable.h"
/* Forward declaration */
class NodeStack;
+class CycleGraph;
+class Promise;
+
+/**
+ * Model checker parameter structure. Holds run-time configuration options for
+ * the model checker.
+ */
+struct model_params {
+};
/** @brief The central structure for model-checking */
class ModelChecker {
public:
- ModelChecker();
+ ModelChecker(struct model_params params);
~ModelChecker();
- /** The scheduler to use: tracks the running/ready Threads */
- Scheduler *scheduler;
-
- /** Stores the context for the main model-checking system thread (call
- * once)
- * @param ctxt The system context structure
- */
- void set_system_context(ucontext_t *ctxt) { system_context = ctxt; }
-
/** @returns the context for the main model-checking system thread */
- ucontext_t * get_system_context(void) { return system_context; }
+ ucontext_t * get_system_context() { return &system_context; }
+
+ /** Prints an execution summary with trace information. */
+ void print_summary();
- void check_current_action(void);
- void print_summary(void);
Thread * schedule_next_thread();
- int add_thread(Thread *t);
+ void add_thread(Thread *t);
void remove_thread(Thread *t);
- Thread * get_thread(thread_id_t tid) { return (*thread_map)[id_to_int(tid)]; }
+ Thread * get_thread(thread_id_t tid) { return thread_map->get(id_to_int(tid)); }
thread_id_t get_next_id();
int get_num_threads();
modelclock_t get_next_seq_num();
- int switch_to_master(ModelAction *act);
+ /** @return The currently executing Thread. */
+ Thread * get_current_thread() { return scheduler->get_current_thread(); }
+ int switch_to_master(ModelAction *act);
+ ClockVector * get_cv(thread_id_t tid);
bool next_execution();
+ bool isfeasible();
+ bool isfinalfeasible();
+ void check_promises(ClockVector *old_cv, ClockVector * merge_cv);
+
+ void finish_execution();
MEMALLOC
private:
+ /** The scheduler to use: tracks the running/ready Threads */
+ Scheduler *scheduler;
+
int next_thread_id;
modelclock_t used_sequence_numbers;
int num_executions;
+ const model_params params;
+
/**
* Stores the ModelAction for the current thread action. Call this
* immediately before switching from user- to system-context to pass
* @param act The ModelAction created by the user-thread action
*/
void set_current_action(ModelAction *act) { current_action = act; }
+ void check_current_action();
+
+ bool take_step();
ModelAction * get_last_conflict(ModelAction *act);
void set_backtracking(ModelAction *act);
thread_id_t get_next_replay_thread();
ModelAction * get_next_backtrack();
void reset_to_initial_state();
+ void resolve_promises(ModelAction *curr);
+ void compute_promises(ModelAction *curr);
void add_action_to_lists(ModelAction *act);
ModelAction * get_last_action(thread_id_t tid);
ModelAction * get_parent_action(thread_id_t tid);
+ ModelAction * get_last_seq_cst(const void *location);
void build_reads_from_past(ModelAction *curr);
+ ModelAction * process_rmw(ModelAction * curr);
+ void post_r_modification_order(ModelAction * curr, const ModelAction *rf);
+ void r_modification_order(ModelAction * curr, const ModelAction *rf);
+ void w_modification_order(ModelAction * curr);
ModelAction *current_action;
ModelAction *diverge;
thread_id_t nextThread;
- ucontext_t *system_context;
+ ucontext_t system_context;
action_list_t *action_trace;
- std::map<int, Thread *> *thread_map;
- std::map<void *, std::vector<action_list_t> > *obj_thrd_map;
+ HashTable<int, Thread *, int> *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<const void *, action_list_t, uintptr_t, 4> *obj_map;
+
+ HashTable<void *, std::vector<action_list_t>, uintptr_t, 4 > *obj_thrd_map;
+ std::vector<Promise *> * promises;
std::vector<ModelAction *> *thrd_last_action;
NodeStack *node_stack;
ModelAction *next_backtrack;
+ CycleGraph * cyclegraph;
+ bool failed_promise;
};
extern ModelChecker *model;