model: schedule appropriate fence backtracking points

[c11tester.git] / schedule.h

diff --git a/schedule.h b/schedule.h
index bae8c1f8e2ce136206d42325dfbba6954e81c7c5..121da08db05a3d0d735c4ca34926006b364c85cb 100644 (file)
--- a/schedule.h
+++ b/schedule.h
@@ -1,19 +1,55 @@
+/** @file schedule.h
+ *     @brief Thread scheduler.
+ */
+
 #ifndef __SCHEDULE_H__
 #define __SCHEDULE_H__
 
-#include "libthreads.h"
-#include "model.h"
+#include "mymemory.h"
+#include "modeltypes.h"
 
-struct scheduler {
-       void (*init)(void);
-       void (*exit)(void);
-       void (*add_thread)(struct thread *t);
-       struct thread * (*next_thread)(void);
-       struct thread * (*get_current_thread)(void);
+/* Forward declaration */
+class Thread;
+class Node;
 
-       void *priv;
-};
+typedef enum enabled_type {
+       THREAD_DISABLED,
+       THREAD_ENABLED,
+       THREAD_SLEEP_SET
+} enabled_type_t;
+
+/** @brief The Scheduler class performs the mechanics of Thread execution
+ * scheduling. */
+class Scheduler {
+public:
+       Scheduler();
+       void add_thread(Thread *t);
+       void remove_thread(Thread *t);
+       void sleep(Thread *t);
+       void wake(Thread *t);
+       Thread * select_next_thread();
+       void set_current_thread(Thread *t);
+       Thread * get_current_thread() const;
+       void print() const;
+       enabled_type_t * get_enabled_array() const { return enabled; };
+       void remove_sleep(Thread *t);
+       void add_sleep(Thread *t);
+       enabled_type_t get_enabled(const Thread *t) const;
+       void update_sleep_set(Node *n);
+       bool is_enabled(const Thread *t) const;
+       bool is_enabled(thread_id_t tid) const;
+       bool is_sleep_set(const Thread *t) const;
 
-void scheduler_init(struct model_checker *mod);
+       SNAPSHOTALLOC
+private:
+       /** The list of available Threads that are not currently running */
+       enabled_type_t *enabled;
+       int enabled_len;
+       int curr_thread_index;
+       void set_enabled(Thread *t, enabled_type_t enabled_status);
+
+       /** The currently-running Thread */
+       Thread *current;
+};
 
 #endif /* __SCHEDULE_H__ */