#ifndef __MODEL_H__
#define __MODEL_H__
+#include <list>
+#include <map>
+#include <cstddef>
+#include <ucontext.h>
+
+#include "schedule.h"
+#include "libthreads.h"
+#include "libatomic.h"
+#include "threads.h"
+#include "action.h"
+
+/* Forward declaration */
+class TreeNode;
+
+class Backtrack {
+public:
+ Backtrack(ModelAction *d, action_list_t *t) {
+ diverge = d;
+ actionTrace = t;
+ iter = actionTrace->begin();
+ }
+ ModelAction * get_diverge() { return diverge; }
+ action_list_t * get_trace() { return actionTrace; }
+ void advance_state() { iter++; }
+ ModelAction * get_state() {
+ return iter == actionTrace->end() ? NULL : *iter;
+ }
+private:
+ ModelAction *diverge;
+ action_list_t *actionTrace;
+ /* points to position in actionTrace as we replay */
+ action_list_t::iterator iter;
+};
+
class ModelChecker {
public:
ModelChecker();
~ModelChecker();
- struct scheduler *scheduler;
- struct thread *system_thread;
+ class Scheduler *scheduler;
- void add_system_thread(struct thread *t);
- void assign_id(struct thread *t);
+ void set_system_context(ucontext_t *ctxt) { system_context = ctxt; }
+ ucontext_t * get_system_context(void) { return system_context; }
+ void set_current_action(ModelAction *act) { current_action = act; }
+ void check_current_action(void);
+ void print_summary(void);
+ Thread * schedule_next_thread();
+
+ int add_thread(Thread *t);
+ void remove_thread(Thread *t);
+ Thread * get_thread(thread_id_t tid) { return thread_map[tid]; }
+
+ int get_next_id();
+
+ int switch_to_master(ModelAction *act);
+
+ bool next_execution();
private:
int used_thread_id;
+ int num_executions;
+
+ ModelAction * get_last_conflict(ModelAction *act);
+ void set_backtracking(ModelAction *act);
+ thread_id_t advance_backtracking_state();
+ thread_id_t get_next_replay_thread();
+ Backtrack * get_next_backtrack();
+ void reset_to_initial_state();
+
+ class ModelAction *current_action;
+ Backtrack *exploring;
+ thread_id_t nextThread;
+
+ ucontext_t *system_context;
+ action_list_t *action_trace;
+ std::map<thread_id_t, class Thread *> thread_map;
+ class TreeNode *rootNode, *currentNode;
+ std::list<class Backtrack *> backtrack_list;
};
extern ModelChecker *model;