X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=schedule.h;h=9b16a7a968f7dcd5f52be8e936467efec29b0c48;hb=130a35155171503883aaf18e57f8957ce63d06e8;hp=360b390512b4776d0af54eb331aa91682c4906c0;hpb=3ffc7186fd49a2dd2a5f5756511614fb3f06ac56;p=model-checker.git

diff --git a/schedule.h b/schedule.h
index 360b390..9b16a7a 100644
--- a/schedule.h
+++ b/schedule.h
@@ -1,21 +1,63 @@
+/** @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;
+class ModelExecution;
 
-	void *priv;
-};
+typedef enum enabled_type {
+	THREAD_DISABLED,
+	THREAD_ENABLED,
+	THREAD_SLEEP_SET
+} enabled_type_t;
+
+void enabled_type_to_string(enabled_type_t e, char *str);
+
+/** @brief The Scheduler class performs the mechanics of Thread execution
+ * scheduling. */
+class Scheduler {
+public:
+	Scheduler();
+	void register_engine(ModelExecution *execution);
 
-void scheduler_init(struct model_checker *mod);
-void schedule_add_thread(struct thread *t);
-struct thread *schedule_choose_next(void);
+	void add_thread(Thread *t);
+	void remove_thread(Thread *t);
+	void sleep(Thread *t);
+	void wake(Thread *t);
+	Thread * select_next_thread(Node *n);
+	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;
+	bool all_threads_sleeping() const;
+	void set_scheduler_thread(thread_id_t tid);
+
+	SNAPSHOTALLOC
+private:
+	ModelExecution *execution;
+	/** 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__ */