#ifndef __MODEL_H__
#define __MODEL_H__
-#include <list>
-#include <map>
-#include <vector>
#include <cstddef>
-#include <ucontext.h>
+#include <inttypes.h>
-#include "schedule.h"
#include "mymemory.h"
-#include "libthreads.h"
-#include "libatomic.h"
-#include "threads.h"
-#include "action.h"
-#include "clockvector.h"
+#include "hashtable.h"
+#include "config.h"
+#include "modeltypes.h"
+#include "stl-model.h"
+#include "context.h"
+#include "params.h"
/* Forward declaration */
+class Node;
class NodeStack;
+class CycleGraph;
+class Promise;
+class Scheduler;
+class Thread;
+class ClockVector;
+class TraceAnalysis;
+class ModelExecution;
+class ModelAction;
+
+typedef SnapList<ModelAction *> action_list_t;
+
+/** @brief Model checker execution stats */
+struct execution_stats {
+ int num_total; /**< @brief Total number of executions */
+ int num_infeasible; /**< @brief Number of infeasible executions */
+ int num_buggy_executions; /** @brief Number of buggy executions */
+ int num_complete; /**< @brief Number of feasible, non-buggy, complete executions */
+ int num_redundant; /**< @brief Number of redundant, aborted executions */
+};
/** @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;
+ void run();
+
+ /** Restart the model checker, intended for pluggins. */
+ void restart();
+
+ /** Exit the model checker, intended for pluggins. */
+ void exit_model_checker();
- /** 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; }
+ /** Check the exit_flag. */
+ bool get_exit_flag() const { return exit_flag; }
/** @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; }
- void check_current_action(void);
- void print_summary(void);
- Thread * schedule_next_thread();
+ ModelExecution * get_execution() const { return execution; }
- int add_thread(Thread *t);
- void remove_thread(Thread *t);
- Thread * get_thread(thread_id_t tid) { return (*thread_map)[id_to_int(tid)]; }
+ int get_execution_number() const { return execution_number; }
- thread_id_t get_next_id();
- int get_num_threads();
- modelclock_t get_next_seq_num();
+ Thread * get_thread(thread_id_t tid) const;
+ Thread * get_thread(const ModelAction *act) const;
- int switch_to_master(ModelAction *act);
- ClockVector * get_cv(thread_id_t tid);
- bool next_execution();
+ Thread * get_current_thread() const;
+
+ void switch_from_master(Thread *thread);
+ uint64_t switch_to_master(ModelAction *act);
+ bool assert_bug(const char *msg, ...);
+ void assert_user_bug(const char *msg);
+
+ const model_params params;
+ void add_trace_analysis(TraceAnalysis *a) { trace_analyses.push_back(a); }
+ void set_inspect_plugin(TraceAnalysis *a) { inspect_plugin=a; }
MEMALLOC
private:
- int next_thread_id;
- modelclock_t used_sequence_numbers;
- int num_executions;
-
- /**
- * Stores the ModelAction for the current thread action. Call this
- * immediately before switching from user- to system-context to pass
- * data between them.
- * @param act The ModelAction created by the user-thread action
- */
- void set_current_action(ModelAction *act) { current_action = act; }
-
- ModelAction * get_last_conflict(ModelAction *act);
- void set_backtracking(ModelAction *act);
- thread_id_t get_next_replay_thread();
- ModelAction * get_next_backtrack();
+ /** Flag indicates whether to restart the model checker. */
+ bool restart_flag;
+ /** Flag indicates whether to exit the model checker. */
+ bool exit_flag;
+
+ /** The scheduler to use: tracks the running/ready Threads */
+ Scheduler * const scheduler;
+ NodeStack * const node_stack;
+ ModelExecution *execution;
+
+ int execution_number;
+
+ unsigned int get_num_threads() const;
+
+ void execute_sleep_set();
+
+ bool next_execution();
+ bool should_terminate_execution();
+
+ Thread * get_next_thread();
void reset_to_initial_state();
- 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 *current_action;
ModelAction *diverge;
- thread_id_t nextThread;
+ ModelAction *earliest_diverge;
+
+ ucontext_t system_context;
- ucontext_t *system_context;
- action_list_t *action_trace;
- std::map<int, Thread *> *thread_map;
+ ModelVector<TraceAnalysis *> trace_analyses;
- /** Per-object list of actions. Maps an object (i.e., memory location)
- * to a trace of all actions performed on the object. */
- std::map<const void *, action_list_t> *obj_map;
+ /** @bref Implement restart. */
+ void do_restart();
+ /** @bref Plugin that can inspect new actions. */
+ TraceAnalysis *inspect_plugin;
+ /** @brief The cumulative execution stats */
+ struct execution_stats stats;
+ void record_stats();
+ void run_trace_analyses();
+ void print_bugs() const;
+ void print_execution(bool printbugs) const;
+ void print_stats() const;
- std::map<void *, std::vector<action_list_t> > *obj_thrd_map;
- std::vector<ModelAction *> *thrd_last_action;
- NodeStack *node_stack;
- ModelAction *next_backtrack;
+ friend void user_main_wrapper();
};
extern ModelChecker *model;
projects / model-checker.git / blobdiff