nodestack: improve bounds-checking assertion

[model-checker.git] / schedule.h

diff --git a/schedule.h b/schedule.h
index 8e306752da7a1c43d7e10f8fb106473eb6284636..72670590dac3151bc9509ca2b5d60f2fe665c210 100644 (file)
--- a/schedule.h
+++ b/schedule.h
@@ -1,26 +1,52 @@
+/** @file schedule.h
+ *     @brief Thread scheduler.
+ */
+
 #ifndef __SCHEDULE_H__
 #define __SCHEDULE_H__
 
-#include <queue>
+#include <list>
+#include "mymemory.h"
+
+/* Forward declaration */
+class Thread;
+class Node;
 
-#include "libthreads.h"
-#include "model.h"
+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:
-       virtual void add_thread(struct thread *t) = 0;
-       virtual struct thread * next_thread(void) = 0;
-       virtual struct thread * get_current_thread(void) = 0;
-};
+       Scheduler();
+       void add_thread(Thread *t);
+       void remove_thread(Thread *t);
+       void sleep(Thread *t);
+       void wake(Thread *t);
+       Thread * next_thread(Thread *t);
+       Thread * get_current_thread() const;
+       void print() const;
+       enabled_type_t * get_enabled() { return enabled; };
+       void remove_sleep(Thread *t);
+       void add_sleep(Thread *t);
+       enabled_type_t get_enabled(Thread *t);
+       void update_sleep_set(Node *n);
+       bool is_enabled(Thread *t) const;
 
-class DefaultScheduler: public Scheduler {
-public:
-       void add_thread(struct thread *t);
-       struct thread * next_thread(void);
-       struct thread * get_current_thread(void);
+       SNAPSHOTALLOC
 private:
-       std::queue<struct thread *> queue;
-       struct thread *current;
+       /** 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__ */